/* ==========================================================================
   PLUTUSLEARNING — Design System & Global Styles
   ========================================================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Inter:wght@300;400;500;600;700&display=swap');

/* --- CSS Variables --- */
:root {
  /* Colors — Mediterranean Palette */
  --color-bg: #F7F3ED;
  --color-bg-alt: #F0EBE3;
  --color-surface: #FFFDF9;
  --color-surface-hover: #FFF9F0;
  --color-primary: #2C5F8A;
  --color-primary-hover: #1E4468;
  --color-primary-light: #4A7FB5;
  --color-primary-lightest: rgba(44, 95, 138, 0.08);
  --color-accent: #C4785B;
  --color-accent-hover: #B06A4E;
  --color-accent-light: rgba(196, 120, 91, 0.12);
  --color-warm: #D4A96A;
  --color-warm-light: rgba(212, 169, 106, 0.15);
  --color-text: #1A2A3A;
  --color-text-secondary: #5C6A78;
  --color-text-muted: #8C95A0;
  --color-border: #E5DDD0;
  --color-border-light: #EDE8E0;
  --color-success: #5B8C5A;
  --color-success-light: rgba(91, 140, 90, 0.12);
  --color-error: #C75B5B;
  --color-error-light: rgba(199, 91, 91, 0.12);
  --color-overlay: rgba(26, 42, 58, 0.6);

  /* Typography */
  --font-heading: 'DM Serif Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 50%;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(26, 42, 58, 0.06), 0 1px 2px rgba(26, 42, 58, 0.04);
  --shadow-md: 0 4px 12px rgba(26, 42, 58, 0.08), 0 2px 4px rgba(26, 42, 58, 0.04);
  --shadow-lg: 0 12px 32px rgba(26, 42, 58, 0.1), 0 4px 8px rgba(26, 42, 58, 0.04);
  --shadow-xl: 0 20px 48px rgba(26, 42, 58, 0.12), 0 8px 16px rgba(26, 42, 58, 0.06);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --container-max: 1200px;
  --nav-height: 72px;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
}

ul, ol {
  list-style: none;
}

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  background: none;
  font-size: inherit;
}

input, select {
  font-family: var(--font-body);
  font-size: inherit;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.section-label {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

/* --- Layout --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.page-content {
  padding-top: calc(var(--nav-height) + var(--space-2xl));
  padding-bottom: var(--space-4xl);
  min-height: 100vh;
}

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(247, 243, 237, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-light);
  z-index: 1000;
  transition: box-shadow var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
}

.nav-brand-logo {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  display: block;
}

.nav-brand-text {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  color: var(--color-text);
}

.nav-brand-text span {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav-link {
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--color-text);
  background: var(--color-primary-lightest);
}

.nav-link.active {
  color: var(--color-primary);
  background: var(--color-primary-lightest);
}

.nav-progress-summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 32px;
  padding: 5px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-light);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-progress-summary:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-xp-rank {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  color: var(--color-text);
  font-size: 0.74rem;
  font-weight: 800;
  transition: color var(--transition-fast);
}

.nav-xp-rank:hover {
  color: var(--color-primary);
}

.nav-xp-rank-name,
.nav-xp-total {
  white-space: nowrap;
}

.nav-xp-progress {
  width: 34px;
  height: 5px;
  border-radius: 999px;
  background: var(--color-border-light);
  overflow: hidden;
}

.nav-xp-progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--color-accent);
}

.nav-xp-total {
  color: var(--color-text-muted);
  font-size: inherit;
}

.beta-badge {
  font-size: 0.6rem;
  background: var(--color-accent);
  color: white;
  padding: 2px 5px;
  border-radius: 4px;
  font-weight: 700;
  letter-spacing: 0.5px;
  vertical-align: middle;
  margin-left: 2px;
}

/* Mobile menu button */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: white !important;
  box-shadow: 0 2px 8px rgba(44, 95, 138, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(44, 95, 138, 0.3);
  color: white !important;
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background: linear-gradient(135deg, var(--color-accent), var(--color-warm));
  color: white !important;
  box-shadow: 0 2px 8px rgba(196, 120, 91, 0.25);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(196, 120, 91, 0.3);
  color: white !important;
}

.btn-ghost {
  color: var(--color-text-secondary);
  padding: 0.5rem 1rem;
}

.btn-ghost:hover {
  color: var(--color-text);
  background: var(--color-primary-lightest);
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

/* --- Cards --- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-border);
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-lg);
}

.card-icon.blue {
  background: var(--color-primary-lightest);
  color: var(--color-primary);
}

.card-icon.terracotta {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.card-icon.warm {
  background: var(--color-warm-light);
  color: var(--color-warm);
}

.card-icon.green {
  background: var(--color-success-light);
  color: var(--color-success);
}

.card h3 {
  margin-bottom: var(--space-sm);
}

.card p {
  font-size: 0.95rem;
}

/* --- Hero Section --- */
.hero {
  padding: var(--space-4xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -15%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(44, 95, 138, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(196, 120, 91, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
}

.hero h1 {
  margin-bottom: var(--space-lg);
}

.hero h1 .highlight {
  color: var(--color-primary);
  position: relative;
}

.hero h1 .highlight::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  height: 8px;
  background: rgba(196, 120, 91, 0.2);
  border-radius: 4px;
  z-index: -1;
}

.hero p {
  font-size: 1.15rem;
  max-width: 560px;
  margin: 0 auto var(--space-2xl);
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-3xl);
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-border-light);
}

.hero-stat {
  text-align: center;
}

.hero-stat .number {
  font-family: var(--font-heading);
  font-size: 2rem;
  color: var(--color-primary);
  display: block;
}

.hero-stat .label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
  display: block;
}

/* --- Daily Challenge --- */
.daily-challenge-section {
  padding: 0 0 var(--space-4xl);
}

.daily-challenge-card {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: var(--space-2xl);
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-md);
}

.daily-challenge-copy h2 {
  margin-bottom: var(--space-sm);
}

.daily-challenge-copy p:not(.section-label) {
  font-size: 1.05rem;
  margin-bottom: var(--space-lg);
}

.daily-challenge-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.daily-challenge-meta span {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
}

#daily-streak-count {
  background: var(--color-primary-lightest);
  color: var(--color-primary);
}

.daily-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.daily-option {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md);
  border: 1.5px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.daily-option:hover:not(.disabled) {
  border-color: var(--color-primary);
  background: var(--color-primary-lightest);
}

.daily-option-letter {
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-weight: 700;
  font-size: 0.78rem;
}

.daily-option.correct {
  border-color: var(--color-success);
  background: var(--color-success-light);
}

.daily-option.correct .daily-option-letter {
  background: var(--color-success);
  color: white;
}

.daily-option.incorrect {
  border-color: var(--color-error);
  background: var(--color-error-light);
}

.daily-option.incorrect .daily-option-letter {
  background: var(--color-error);
  color: white;
}

.daily-option.disabled {
  cursor: default;
}

.daily-option.disabled:not(.correct):not(.incorrect) {
  opacity: 0.62;
}

.daily-result {
  min-height: 28px;
  margin-top: var(--space-md);
  color: var(--color-text-secondary);
  font-weight: 600;
}

.daily-result.success {
  color: var(--color-success);
}

.daily-result.error {
  color: var(--color-error);
}

.daily-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

/* --- Daily Financial News --- */
.market-news-section {
  padding: 0 0 var(--space-3xl);
}

.market-news-shell {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(255, 253, 249, 0.96), rgba(240, 235, 227, 0.9)),
    linear-gradient(135deg, rgba(44, 95, 138, 0.08), rgba(196, 120, 91, 0.08));
  border: 1px solid rgba(229, 221, 208, 0.9);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
}

.market-news-shell::before {
  content: '';
  position: absolute;
  inset: 0 0 auto;
  height: 6px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-warm));
}

.market-news-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: var(--space-xl);
  align-items: stretch;
}

.market-news-layout-focused {
  grid-template-columns: 1fr;
}

.market-news-main {
  min-width: 0;
}

.market-news-layout-focused .market-news-article {
  max-width: none;
}

.market-news-layout-focused .market-news-body {
  max-width: 980px;
}

.market-news-main h2 {
  margin-bottom: var(--space-md);
}

.market-news-date {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 0.45rem 0.8rem;
  border: 1px solid rgba(44, 95, 138, 0.12);
  border-radius: var(--radius-sm);
  background: var(--color-primary-lightest);
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 700;
}

.market-news-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin: var(--space-md) 0 var(--space-lg);
}

.market-news-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.market-news-tab {
  min-height: 38px;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  background: rgba(255, 253, 249, 0.78);
  color: var(--color-text-secondary);
  font-size: 0.86rem;
  font-weight: 800;
  transition: all var(--transition-fast);
}

.market-news-tab:hover,
.market-news-tab.active {
  border-color: rgba(44, 95, 138, 0.24);
  background: var(--color-primary);
  color: white;
  box-shadow: 0 8px 18px rgba(44, 95, 138, 0.14);
}

.market-news-article {
  max-width: 850px;
  padding-left: var(--space-lg);
  border-left: 3px solid var(--color-accent);
}

.market-news-kicker {
  margin-bottom: var(--space-xs);
  color: var(--color-accent);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.market-news-article h3 {
  margin-bottom: var(--space-sm);
  max-width: 760px;
  font-size: clamp(1.45rem, 2.2vw, 1.95rem);
}

.market-news-summary,
.market-news-body {
  max-width: 860px;
  font-size: 1.02rem;
}

.market-news-body + .market-news-body {
  margin-top: var(--space-md);
}

.market-news-read-more {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  margin-top: var(--space-lg);
  padding: 0.55rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: white;
  font-weight: 800;
  transition: all var(--transition-fast);
}

.market-news-read-more:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.market-news-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-self: center;
  min-width: 0;
  padding: var(--space-lg) var(--space-lg);
  border: 1px solid rgba(229, 221, 208, 0.78);
  border-radius: var(--radius-md);
  background: rgba(255, 253, 249, 0.58);
  box-shadow: var(--shadow-sm);
}

.market-news-sidebar[hidden] {
  display: none;
}

.market-news-sidebar-top {
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border-light);
}

.market-news-icon {
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: white;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  box-shadow: 0 8px 20px rgba(44, 95, 138, 0.16);
}

.market-news-sidebar-top strong,
.market-news-sidebar-top span {
  display: block;
}

.market-news-sidebar-top strong {
  color: var(--color-text);
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 400;
  line-height: 1.1;
}

.market-news-sidebar-top span {
  color: var(--color-text-muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.market-news-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 0;
}

.market-news-highlight {
  position: relative;
  width: 100%;
  padding: var(--space-sm) 0 var(--space-sm) var(--space-lg);
  border-bottom: 1px solid var(--color-border-light);
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.market-news-highlight:hover {
  opacity: 0.82;
  transform: translateX(2px);
}

.market-news-highlight:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.market-news-highlight::before {
  content: '';
  position: absolute;
  top: 1rem;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-lightest);
}

.market-news-highlight span {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 800;
}

.market-news-highlight p {
  font-size: 0.86rem;
  line-height: 1.45;
}

.market-news-highlight small {
  display: block;
  margin-top: var(--space-xs);
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.market-news-sources {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.market-news-sources-label,
.market-news-sources a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 700;
}

.market-news-sources-label {
  color: var(--color-text-muted);
}

.market-news-sources a {
  padding: var(--space-xs) var(--space-md);
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-alt);
  color: var(--color-text-secondary);
}

.market-news-sources a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.coming-soon-badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 36px;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  background: var(--color-accent);
  color: white;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.btn-disabled,
.btn-disabled:hover {
  opacity: 0.78;
  cursor: default;
  pointer-events: none;
  transform: none;
}

/* --- Section Styles --- */
.section {
  padding: var(--space-4xl) 0;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
}

.section-header h2 {
  margin-bottom: var(--space-sm);
}

/* --- Home Learning System --- */
.home-learning-system {
  padding-top: 0;
}

.learning-system-shell {
  padding: var(--space-2xl);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(255, 253, 249, 0.98), rgba(255, 253, 249, 0.9)),
    linear-gradient(135deg, rgba(44, 95, 138, 0.08), rgba(196, 120, 91, 0.08));
  box-shadow: var(--shadow-md);
}

.learning-system-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: var(--space-xl);
  align-items: center;
  margin-bottom: var(--space-2xl);
}

.learning-system-heading {
  max-width: 620px;
}

.learning-system-intro h2 {
  margin-bottom: 0;
}

.learning-system-intro p:not(.section-label) {
  max-width: 500px;
  margin: 0;
  font-size: 1.05rem;
}

.learning-system-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: var(--space-xl);
  align-items: stretch;
}

.learning-path-panel,
.learning-focus-panel {
  min-width: 0;
  border: 1px solid rgba(229, 221, 208, 0.9);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.learning-path-panel {
  overflow: hidden;
}

.learning-path-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--color-border-light);
  background: var(--color-bg-alt);
}

.learning-path-header span,
.learning-focus-kicker {
  color: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.learning-path-header strong {
  color: var(--color-text);
  font-size: 0.95rem;
}

.learning-path-row {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) 32px;
  gap: var(--space-md);
  align-items: center;
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--color-border-light);
  color: inherit;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.learning-path-row:last-child {
  border-bottom: 0;
}

.learning-path-row:hover {
  background: var(--color-primary-lightest);
  color: inherit;
  transform: translateX(3px);
}

.learning-path-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 900;
}

.learning-path-row h3 {
  margin-bottom: 0.2rem;
  font-size: 1.35rem;
}

.learning-path-row p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.55;
}

.learning-path-arrow {
  color: var(--color-primary);
  font-size: 1.3rem;
  font-weight: 800;
}

.learning-focus-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-xl);
  padding: var(--space-xl);
  background:
    linear-gradient(180deg, rgba(44, 95, 138, 0.08), rgba(255, 253, 249, 0.96) 42%),
    var(--color-surface);
}

.learning-focus-top h3 {
  margin: var(--space-sm) 0 var(--space-md);
  font-size: clamp(1.55rem, 2.6vw, 2.15rem);
}

.learning-focus-top p {
  font-size: 0.98rem;
}

.learning-focus-steps {
  display: grid;
  gap: var(--space-md);
}

.learning-focus-steps div {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  column-gap: var(--space-md);
  align-items: start;
}

.learning-focus-steps span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--color-accent);
  color: white;
  font-weight: 800;
}

.learning-focus-steps strong {
  color: var(--color-text);
  font-size: 1rem;
}

.learning-focus-steps p {
  grid-column: 2;
  margin: 0.1rem 0 0;
  font-size: 0.9rem;
  line-height: 1.5;
}

/* --- Topic Map Section --- */
.topic-map-section {
  background: var(--color-bg-alt);
}

.topic-map-shell {
  display: grid;
  gap: var(--space-2xl);
}

.topic-map-intro {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: var(--space-xl);
  align-items: end;
}

.topic-map-intro h2 {
  margin-bottom: 0;
}

.topic-map-intro > p {
  max-width: 620px;
  margin: 0;
  font-size: 1.05rem;
}

.topic-map-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(310px, 0.65fr);
  gap: var(--space-xl);
  align-items: stretch;
}

.categories-grid {
  display: grid;
  gap: var(--space-sm);
}

.category-card {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) auto;
  gap: var(--space-md);
  align-items: center;
  min-height: 84px;
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: inherit;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.category-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  color: inherit;
  transform: translateX(4px);
}

.cat-marker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  color: var(--color-primary);
  font-weight: 900;
  font-size: 0.82rem;
  overflow: hidden;
}

.cat-marker img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.category-card .cat-info h4 {
  margin-bottom: 0.15rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 800;
}

.category-card .cat-info p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

.cat-action {
  color: var(--color-primary);
  font-size: 0.84rem;
  font-weight: 800;
}

.level-ladder {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  padding: var(--space-xl);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 253, 249, 0.98), rgba(255, 253, 249, 0.88)),
    var(--color-surface);
  box-shadow: var(--shadow-md);
}

.level-ladder-header h3 {
  margin-bottom: var(--space-sm);
}

.level-ladder-header p:not(.section-label) {
  font-size: 0.95rem;
}

.level-ladder-steps {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: var(--space-md);
  justify-content: space-between;
}

.level-ladder-step {
  position: relative;
  padding-left: var(--space-lg);
  border-left: 2px solid var(--color-border);
}

.level-ladder-step::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 0.65rem;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
}

.level-ladder-step strong {
  display: block;
  margin: var(--space-sm) 0 var(--space-xs);
  color: var(--color-text);
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 400;
}

.level-ladder-step p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.55;
}

.level-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-xl);
  font-size: 0.76rem;
  font-weight: 800;
}

.level-badge.beginner {
  background: var(--color-success-light);
  color: var(--color-success);
}

.level-badge.intermediate {
  background: var(--color-warm-light);
  color: #B08A4A;
}

.level-badge.advanced {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

/* --- Footer --- */
.footer {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand .nav-brand-text {
  color: white;
  font-size: 1.5rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.5);
  margin-top: var(--space-sm);
  font-size: 0.9rem;
  max-width: 300px;
}

.footer-col h4 {
  color: white;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.5);
  padding: var(--space-xs) 0;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: white;
}

.footer-social {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-top: var(--space-sm);
}

.footer-social-link {
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-full);
  color: rgba(255, 255, 255, 0.72);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.footer-social-link:hover {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
  transform: translateY(-2px);
}

.footer-social-link svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-xl);
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.35);
}

.footer-disclaimer {
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-sm);
}

/* ============================================
   LEARN PAGE — Flashcards
   ============================================ */

/* LEARN HUB EXPERIMENT: remove this block and the matching learn.html section to restore the old layout. */
.learn-hub {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-md);
  margin: 0 0 var(--space-2xl);
}

.learn-hub-card {
  text-align: left;
  min-height: 190px;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-lg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.learn-hub-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  color: var(--color-text);
}

.learn-hub-card.primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: white;
}

.learn-hub-card.primary p,
.learn-hub-card.primary .learn-hub-icon {
  color: rgba(255, 255, 255, 0.82);
}

.learn-hub-icon {
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.learn-hub-card strong {
  display: block;
  margin-top: 3.1rem;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 400;
  line-height: 1.15;
}

.learn-hub-card p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

.learn-section-panel {
  display: none;
}

.learn-section-panel.active {
  display: block;
}

.learn-progress-hidden {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.learn-feature-panel {
  padding: var(--space-2xl);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
}

.learn-feature-panel h2 {
  max-width: 680px;
  margin-bottom: var(--space-sm);
}

.learn-feature-panel p:not(.section-label) {
  max-width: 720px;
  margin-bottom: var(--space-xl);
}

.learn-embedded-header {
  margin-bottom: var(--space-xl);
}

.learn-embedded-header h2 {
  margin-bottom: var(--space-sm);
}

.learn-embedded-header p:not(.section-label) {
  max-width: 760px;
}

/* Progress Panel */
.learn-progress-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-xl);
  align-items: center;
  margin-bottom: var(--space-xl);
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.learn-progress-copy h2 {
  font-size: 1.5rem;
  margin-bottom: var(--space-xs);
}

.learn-progress-copy p:not(.section-label) {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.learn-progress-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: var(--space-sm);
}

.learn-progress-stat {
  min-width: 90px;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  text-align: center;
}

.learn-progress-stat span {
  display: block;
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: 1.6rem;
  line-height: 1;
}

.learn-progress-stat small {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 700;
}

.learn-progress-actions {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.learn-progress-actions .btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.achievements-panel {
  grid-column: 1 / -1;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-light);
}

.achievements-page-panel {
  margin-bottom: var(--space-4xl);
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.achievements-page-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.achievements-page-summary h2 {
  margin-bottom: var(--space-xs);
  font-size: 1.5rem;
}

.achievements-page-summary p:not(.section-label) {
  margin: 0;
  color: var(--color-text-secondary);
}

.achievement-summary-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(110px, 1fr));
  gap: var(--space-sm);
}

.achievement-next-card {
  margin-bottom: var(--space-lg);
  padding: var(--space-lg);
  border: 1px solid rgba(44, 95, 138, 0.2);
  border-radius: var(--radius-md);
  background: var(--color-primary-lightest);
}

.achievement-next-card strong,
.achievement-next-card small,
.achievement-next-card p,
.achievement-next-label {
  display: block;
}

.achievement-next-label {
  margin-bottom: var(--space-xs);
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.achievement-next-card strong {
  color: var(--color-text);
  font-family: var(--font-heading);
  font-size: 1.1rem;
}

.achievement-next-card p {
  margin: var(--space-xs) 0 var(--space-sm);
  color: var(--color-text-secondary);
}

.achievement-next-card small {
  margin-top: var(--space-xs);
  color: var(--color-text-muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.achievement-next-content {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: var(--space-md);
  align-items: center;
}

.achievement-next-image {
  width: 128px;
  height: 128px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: var(--shadow-md);
}

.achievements-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.achievements-header h3 {
  margin: 0;
  font-size: 1.2rem;
}

.achievement-count {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-weight: 700;
}

.achievement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-sm);
  max-height: 430px;
  overflow-y: auto;
  padding-right: var(--space-xs);
}

.achievement-grid-full {
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  max-height: none;
  overflow: visible;
  padding-right: 0;
}

.achievement-badge {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  min-height: 300px;
  padding: var(--space-md);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
}

.achievement-art-wrap {
  width: 150px;
  height: 150px;
  align-self: center;
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.achievement-art {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.achievement-badge:not(.unlocked) .achievement-art {
  opacity: 0.72;
}

.achievement-badge.unlocked {
  background: var(--color-surface);
  border-color: rgba(44, 95, 138, 0.28);
  box-shadow: var(--shadow-sm);
  color: var(--color-text);
}

.achievement-badge-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.achievement-badge-icon {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 999px;
  background: var(--color-border-light);
  color: transparent;
  font-weight: 800;
}

.achievement-badge.unlocked .achievement-badge-icon {
  background: var(--color-primary);
  color: white;
}

.achievement-tier {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.achievement-badge h4 {
  margin: 0;
  color: var(--color-text);
  font-size: 0.96rem;
  line-height: 1.25;
}

.achievement-badge p {
  flex: 1;
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.82rem;
  line-height: 1.45;
}

.achievement-progress {
  height: 6px;
  border-radius: 999px;
  background: var(--color-border-light);
  overflow: hidden;
}

.achievement-progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--color-primary);
  transition: width var(--transition-base);
}

.achievement-badge small {
  color: var(--color-text-muted);
  font-size: 0.74rem;
  font-weight: 700;
}

/* Filters Bar */
.filters-bar {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: var(--space-2xl);
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.filter-group label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.filter-select {
  padding: 0.5rem 2rem 0.5rem 0.75rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 0.9rem;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235C6A78' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.6rem center;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.filter-select:focus {
  outline: none;
  border-color: var(--color-primary);
}

.filter-actions {
  margin-left: auto;
  display: flex;
  gap: var(--space-sm);
  align-self: flex-end;
}

/* Flashcard Area */
.flashcard-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl);
}

.flashcard-meta {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.flashcard-meta .deck-count {
  font-weight: 600;
  color: var(--color-primary);
}

/* Progress Bar */
.progress-bar-wrapper {
  width: 100%;
  max-width: 600px;
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--color-border-light);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: 3px;
  transition: width var(--transition-base);
}

.progress-text {
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

/* Flashcard */
.flashcard-container {
  perspective: 1200px;
  width: 100%;
  max-width: 580px;
  height: 420px;
  cursor: pointer;
}

.flashcard {
  width: 100%;
  height: 100%;
  position: relative;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
}

.flashcard.flipped {
  transform: rotateY(180deg);
}

.flashcard-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl);
  text-align: center;
}

.flashcard-front {
  background: linear-gradient(145deg, var(--color-surface), #FFF8EE);
  box-shadow: var(--shadow-lg);
}

.flashcard-front .card-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.card-image {
  display: none;
  width: 120px;
  height: 120px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-md);
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.3s ease;
}

.flashcard-front h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  color: var(--color-text);
  line-height: 1.3;
}

.flashcard-front .tap-hint {
  margin-top: auto;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  opacity: 0.6;
}

.flashcard-back {
  background: linear-gradient(145deg, #F0F4F8, var(--color-surface));
  box-shadow: var(--shadow-lg);
  transform: rotateY(180deg);
  text-align: left;
  justify-content: flex-start;
  gap: var(--space-lg);
  overflow-y: auto;
}

.flashcard-back .back-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  align-self: flex-start;
}

.flashcard-back .definition {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--color-text);
}

.flashcard-back .example {
  background: var(--color-primary-lightest);
  border-left: 3px solid var(--color-primary);
  padding: var(--space-md) var(--space-lg);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  font-style: italic;
  align-self: stretch;
}

.flashcard-back .example strong {
  display: block;
  font-style: normal;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

/* Flashcard Actions */
.flashcard-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-sm);
}

.flashcard-actions .btn.active {
  background: var(--color-primary-lightest);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.card-study-status {
  color: var(--color-text-muted);
  font-size: 0.86rem;
  font-weight: 600;
}

/* Flashcard Navigation */
.flashcard-nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.flashcard-nav .btn {
  min-width: 130px;
}

.card-counter {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  min-width: 60px;
  text-align: center;
}

.card-counter span {
  color: var(--color-text-muted);
  font-weight: 400;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--space-4xl) var(--space-xl);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: var(--space-lg);
}

.empty-state h3 {
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
}

.empty-state p {
  color: var(--color-text-muted);
}

/* ============================================
   QUIZ PAGE
   ============================================ */

/* Daily Quiz Limit */
.quiz-limit-card {
  max-width: 760px;
  margin: 0 auto var(--space-xl);
  padding: var(--space-lg) var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  justify-content: space-between;
  gap: var(--space-lg);
  align-items: center;
}

.quiz-limit-main,
.quiz-limit-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.quiz-limit-kicker {
  color: var(--color-text-muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.quiz-limit-main strong {
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: 1.85rem;
  line-height: 1;
}

.quiz-limit-meta {
  align-items: flex-end;
  text-align: right;
  color: var(--color-text-secondary);
  font-size: 0.92rem;
}

.quiz-unlock-form {
  width: min(100%, 380px);
  margin-top: var(--space-xs);
}

.quiz-unlock-form .premium-unlock-controls {
  justify-content: flex-end;
}

.quiz-unlock-form .premium-unlock-controls input {
  max-width: 190px;
}

.quiz-unlock-form .premium-unlock-message {
  text-align: right;
}

.quiz-limit-reached {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.quiz-reset-big {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-xl);
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-primary-lightest);
  color: var(--color-primary);
  border-radius: var(--radius-full);
  font-weight: 700;
}

/* Quiz Setup */
.quiz-setup {
  max-width: 600px;
  margin: 0 auto;
}

.quiz-setup .card {
  padding: var(--space-2xl);
}

.quiz-setup h3 {
  margin-bottom: var(--space-xl);
}

.quiz-form-group {
  margin-bottom: var(--space-lg);
}

.quiz-form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.quiz-form-group .filter-select {
  width: 100%;
}

/* Quiz Active */
.quiz-area {
  max-width: 700px;
  margin: 0 auto;
}

.quiz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
}

.quiz-progress {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.quiz-score {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
}

.quiz-question-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-md);
}

.quiz-question-card h3 {
  margin-bottom: var(--space-sm);
  font-size: 1.1rem;
  color: var(--color-text-muted);
  font-family: var(--font-body);
}

.quiz-question-card .question-text {
  font-size: 1.2rem;
  font-family: var(--font-heading);
  color: var(--color-text);
  margin-bottom: var(--space-xl);
  line-height: 1.4;
}

/* Quiz Options */
.quiz-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.quiz-option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border: 2px solid var(--color-border-light);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.95rem;
  color: var(--color-text);
  text-align: left;
  width: 100%;
  line-height: 1.5;
  background: var(--color-surface);
}

.quiz-option:hover:not(.disabled) {
  border-color: var(--color-primary);
  background: var(--color-primary-lightest);
}

.quiz-option .option-letter {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  flex-shrink: 0;
  margin-top: 1px;
}

.quiz-option.correct {
  border-color: var(--color-success);
  background: var(--color-success-light);
}

.quiz-option.correct .option-letter {
  background: var(--color-success);
  color: white;
}

.quiz-option.incorrect {
  border-color: var(--color-error);
  background: var(--color-error-light);
}

.quiz-option.incorrect .option-letter {
  background: var(--color-error);
  color: white;
}

.quiz-option.disabled {
  cursor: default;
  opacity: 0.7;
}

.quiz-option.disabled.correct {
  opacity: 1;
}

.quiz-next-btn {
  margin-top: var(--space-xl);
  text-align: center;
}

/* Quiz Results */
.quiz-results {
  text-align: center;
}

.quiz-results .card {
  padding: var(--space-3xl);
}

.results-icon {
  font-size: 4rem;
  margin-bottom: var(--space-lg);
}

.results-score {
  font-family: var(--font-heading);
  font-size: 3rem;
  color: var(--color-primary);
  margin: var(--space-md) 0;
}

.results-message {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
}

.results-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.quiz-review {
  max-width: 760px;
  margin: 0 auto;
}

.quiz-review .card {
  padding: var(--space-2xl);
}

.quiz-review-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.quiz-review-kicker {
  display: inline-flex;
  margin-bottom: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  background: var(--color-primary-lightest);
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 800;
}

.quiz-review-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  text-align: left;
  margin-bottom: var(--space-xl);
}

.quiz-review-card .card-label {
  align-self: flex-start;
  color: var(--color-text-muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.quiz-review-card h3 {
  margin: 0;
  font-size: 1.6rem;
}

.quiz-review-block {
  padding: var(--space-md);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
}

.quiz-review-block.correct {
  border-color: rgba(46, 125, 50, 0.22);
  background: var(--color-success-light);
}

.quiz-review-block strong {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.quiz-review-block p {
  margin: 0;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

/* Missions */
.xp-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(280px, 1fr);
  gap: var(--space-xl);
  align-items: center;
  margin-bottom: var(--space-xl);
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.xp-panel h2 {
  margin-bottom: var(--space-xs);
}

.xp-meter-top {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  color: var(--color-text-secondary);
  font-size: 0.86rem;
  font-weight: 800;
}

.xp-meter-bar {
  height: 10px;
  margin-top: var(--space-sm);
  border-radius: 999px;
  background: var(--color-border-light);
  overflow: hidden;
}

.xp-meter-bar span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: width var(--transition-base);
}

.mission-layout {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: var(--space-xl);
  align-items: start;
}

.mission-list,
.mission-stage {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.mission-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-md);
  position: sticky;
  top: calc(var(--nav-height) + var(--space-md));
}

.mission-list-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  width: 100%;
  padding: var(--space-md);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  text-align: left;
  transition: all var(--transition-fast);
}

.mission-list-item:hover,
.mission-list-item.active {
  border-color: rgba(44, 95, 138, 0.22);
  background: var(--color-primary-lightest);
}

.mission-list-item span {
  color: var(--color-accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mission-list-item strong {
  color: var(--color-text);
  font-size: 0.95rem;
}

.mission-list-item small {
  color: var(--color-text-muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.mission-stage {
  padding: var(--space-2xl);
}

.mission-category {
  display: inline-flex;
  margin-bottom: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  background: var(--color-primary-lightest);
  color: var(--color-primary);
  font-size: 0.76rem;
  font-weight: 800;
}

.mission-stage-header {
  margin-bottom: var(--space-xl);
}

.mission-stage-header h2 {
  margin-bottom: var(--space-sm);
}

.mission-visual-wrap {
  margin-bottom: var(--space-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
  box-shadow: var(--shadow-sm);
}

.mission-visual {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.mission-state {
  margin-bottom: var(--space-xl);
  padding: var(--space-lg);
  border: 1px solid rgba(44, 95, 138, 0.16);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary-lightest), var(--color-surface));
}

.mission-state-heading {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  align-items: center;
  margin-bottom: var(--space-md);
}

.mission-state-heading span {
  color: var(--color-accent);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mission-state-heading strong {
  color: var(--color-text);
  font-size: 0.86rem;
}

.mission-state-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
}

.mission-state-item {
  min-width: 0;
}

.mission-state-label {
  display: flex;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: 0.4rem;
  color: var(--color-text-secondary);
  font-size: 0.82rem;
  font-weight: 800;
}

.mission-state-label strong {
  color: var(--color-text);
}

.mission-state-bar {
  height: 8px;
  border-radius: 999px;
  background: rgba(44, 95, 138, 0.12);
  overflow: hidden;
}

.mission-state-bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: width var(--transition-base);
}

.mission-scenario {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  padding: var(--space-lg);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--color-bg-alt);
}

.mission-impact-note {
  padding: var(--space-md);
  border: 1px solid rgba(196, 117, 80, 0.24);
  border-radius: var(--radius-md);
  background: var(--color-warm-light);
}

.mission-impact-note span,
.mission-feedback-impact span,
.mission-decision-path > span {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--color-accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mission-impact-note strong {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.mission-impact-note p {
  margin: 0;
}

.mission-choices {
  display: grid;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.mission-choice {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  border: 1.5px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  text-align: left;
  line-height: 1.45;
  transition: all var(--transition-fast);
}

.mission-choice:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-lightest);
}

.mission-choice.selected {
  box-shadow: 0 0 0 3px rgba(44, 93, 139, 0.12);
}

.mission-choice.is-correct,
.mission-choice.correct-answer {
  border-color: var(--color-success);
  background: var(--color-success-light);
  box-shadow: 0 0 0 3px rgba(91, 140, 90, 0.14);
}

.mission-choice.is-mixed {
  border-color: var(--color-warm);
  background: var(--color-warm-light);
  box-shadow: 0 0 0 3px rgba(212, 169, 106, 0.16);
}

.mission-choice.is-wrong {
  border-color: var(--color-error);
  background: var(--color-error-light);
  box-shadow: 0 0 0 3px rgba(199, 91, 91, 0.14);
}

.mission-choice:disabled {
  cursor: default;
}

.mission-feedback {
  margin-bottom: var(--space-xl);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
}

.mission-feedback.good {
  border-color: rgba(91, 140, 90, 0.3);
  background: var(--color-success-light);
}

.mission-feedback.mixed {
  border-color: rgba(212, 169, 106, 0.4);
  background: var(--color-warm-light);
}

.mission-feedback.bad {
  border-color: rgba(199, 91, 91, 0.28);
  background: var(--color-error-light);
}

.mission-feedback strong {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.mission-feedback p {
  margin: 0;
}

.mission-feedback .mission-completion-message {
  margin-top: var(--space-sm);
}

.mission-feedback-impact {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(31, 45, 61, 0.12);
}

.mission-decision-path {
  display: grid;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.mission-path-item {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.mission-path-item strong {
  display: block;
  margin-bottom: 0.2rem;
  color: var(--color-text);
  font-size: 0.86rem;
}

.mission-path-item p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.88rem;
}

.mission-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
}

/* Free Quiz Styles */
.quiz-setup-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.quiz-setup-header h3 {
  margin-bottom: 0;
}

.free-quiz-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-success-light), #D4F5D4);
  color: var(--color-success);
  font-size: 0.8rem;
  font-weight: 700;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-xl);
  letter-spacing: 0.02em;
}

/* ============================================
   GLOSSARY PAGE
   ============================================ */

.glossary-controls {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}

.search-box {
  flex: 1;
  min-width: 280px;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.75rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast);
}

.search-box input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-lightest);
}

.search-box input::placeholder {
  color: var(--color-text-muted);
}

.search-box .search-icon {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  font-size: 1rem;
  pointer-events: none;
}

/* Filter Pills */
.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.filter-pill {
  padding: 0.4rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  background: var(--color-surface);
}

.filter-pill:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-pill.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* Letter Nav */
.letter-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: var(--space-xl);
  padding: var(--space-md);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
}

.letter-btn {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.letter-btn:hover {
  background: var(--color-primary-lightest);
  color: var(--color-primary);
}

.letter-btn.active {
  background: var(--color-primary);
  color: white;
}

.letter-btn.disabled {
  color: var(--color-border);
  cursor: default;
}

/* Glossary List */
.glossary-section {
  margin-bottom: var(--space-2xl);
}

.glossary-letter-heading {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  color: var(--color-primary);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-border-light);
  margin-bottom: var(--space-md);
}

.glossary-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.glossary-item:hover {
  border-color: var(--color-border);
}

.glossary-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  transition: background var(--transition-fast);
  width: 100%;
  text-align: left;
}

.glossary-item-header:hover {
  background: var(--color-bg-alt);
}

.glossary-term-name {
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text);
}

.glossary-item-tags {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.tag {
  padding: 2px 10px;
  border-radius: var(--radius-xl);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tag.cat {
  background: var(--color-primary-lightest);
  color: var(--color-primary);
}

.tag.level-beginner {
  background: var(--color-success-light);
  color: var(--color-success);
}

.tag.level-intermediate {
  background: var(--color-warm-light);
  color: #B08A4A;
}

.tag.level-advanced {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.glossary-expand-icon {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  margin-left: var(--space-md);
}

.glossary-item.open .glossary-expand-icon {
  transform: rotate(180deg);
}

.glossary-item-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.glossary-item.open .glossary-item-body {
  max-height: 400px;
}

.glossary-item-content {
  padding: 0 var(--space-lg) var(--space-lg);
}

.glossary-item-content .definition-text {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.glossary-item-content .example-text {
  background: var(--color-primary-lightest);
  border-left: 3px solid var(--color-primary);
  padding: var(--space-sm) var(--space-md);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  font-style: italic;
}

.glossary-count {
  text-align: center;
  padding: var(--space-md);
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ============================================
   PAGE HEADERS (inner pages)
   ============================================ */
.page-header {
  text-align: center;
  padding: var(--space-2xl) 0;
  margin-bottom: var(--space-xl);
}

.page-header h1 {
  margin-bottom: var(--space-sm);
}

.page-header p {
  max-width: 520px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.5s ease forwards;
  opacity: 0;
}

.animate-in:nth-child(1) { animation-delay: 0.05s; }
.animate-in:nth-child(2) { animation-delay: 0.1s; }
.animate-in:nth-child(3) { animation-delay: 0.15s; }
.animate-in:nth-child(4) { animation-delay: 0.2s; }
.animate-in:nth-child(5) { animation-delay: 0.25s; }
.animate-in:nth-child(6) { animation-delay: 0.3s; }
.animate-in:nth-child(7) { animation-delay: 0.35s; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .learning-system-intro,
  .learning-system-layout,
  .topic-map-intro,
  .topic-map-layout {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .learning-system-shell {
    padding: var(--space-xl);
  }

  .market-news-layout {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .market-news-controls {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .contact-options {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    gap: var(--space-xl);
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .container {
    padding: 0 var(--space-md);
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-md);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-progress-summary {
    width: 100%;
  }

  .nav-xp-rank {
    justify-content: center;
    flex: 1;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--space-lg);
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .flashcard-container {
    height: 300px;
  }

  .filters-bar {
    flex-direction: column;
  }

  .learn-progress-panel {
    grid-template-columns: 1fr;
  }

  .learn-hub {
    grid-template-columns: 1fr;
  }

  .achievements-page-summary {
    grid-template-columns: 1fr;
  }

  .learn-progress-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .filter-actions {
    margin-left: 0;
    align-self: stretch;
  }

  .filter-actions .btn {
    flex: 1;
  }

  .glossary-item-tags {
    display: none;
  }

  .glossary-controls {
    flex-direction: column;
  }

  .categories-grid {
    grid-template-columns: 1fr;
  }

  .category-card {
    grid-template-columns: 48px minmax(0, 1fr);
  }

  .cat-action {
    grid-column: 2;
  }

  .daily-challenge-card {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .xp-panel,
  .mission-layout {
    grid-template-columns: 1fr;
  }

  .mission-list {
    position: static;
  }

  .mission-state-grid {
    grid-template-columns: 1fr;
  }

  .quiz-limit-card {
    align-items: stretch;
    flex-direction: column;
  }

  .quiz-limit-meta {
    align-items: flex-start;
    text-align: left;
  }
}

@media (max-width: 480px) {
  .flashcard-container {
    height: 280px;
  }

  .flashcard-face {
    padding: var(--space-lg);
  }

  .flashcard-nav {
    flex-direction: column;
    width: 100%;
  }

  .learn-progress-stats {
    grid-template-columns: 1fr;
  }

  .achievement-summary-stats {
    grid-template-columns: 1fr;
  }

  .achievements-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .learn-progress-actions,
  .flashcard-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .learn-progress-actions .btn,
  .flashcard-actions .btn {
    width: 100%;
  }

  .flashcard-nav .btn {
    width: 100%;
  }

  .results-actions {
    flex-direction: column;
  }

  .results-actions .btn {
    width: 100%;
  }

  .daily-actions {
    flex-direction: column;
  }

  .daily-actions .btn {
    width: 100%;
  }
}

/* ============================================
   INFO PAGES — About, Contact, Privacy
   ============================================ */

.info-page-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: border-color var(--transition-fast);
}

.info-card:hover {
  border-color: var(--color-border);
}

.info-card-icon {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.info-card h2 {
  margin-bottom: var(--space-md);
  font-size: 1.5rem;
}

.info-card p {
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.info-card p:last-child {
  margin-bottom: 0;
}

.info-card a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.info-card a:hover {
  color: var(--color-primary-hover);
}

.contact-page-header {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.contact-options {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: var(--space-xl);
  align-items: stretch;
  max-width: 980px;
  margin: 0 auto;
}

.contact-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  min-height: 300px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.contact-card-primary {
  background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-hover) 100%);
}

.contact-card-kicker {
  color: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.contact-card h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: var(--space-md);
}

.contact-card p:not(.contact-card-kicker) {
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 540px;
}

.contact-social-link {
  align-self: flex-start;
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  font-weight: 700;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.contact-social-link:hover {
  color: var(--color-accent);
  transform: translateY(-2px);
}

.contact-social-link svg {
  box-sizing: border-box;
  flex: 0 0 42px;
  width: 42px;
  height: 42px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 9px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  transform: translateY(-1px);
}

.info-card {
  overflow-wrap: anywhere;
}

@media (max-width: 900px) {
  .contact-options {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-card {
    min-width: 0;
  }
}

@media (max-width: 480px) {
  .contact-card,
  .info-card {
    padding: var(--space-xl);
  }

  .contact-card .btn {
    width: 100%;
    white-space: normal;
    overflow-wrap: anywhere;
  }
}

.info-list {
  margin: var(--space-md) 0;
  padding-left: var(--space-md);
}

.info-list li {
  position: relative;
  padding: var(--space-sm) 0;
  padding-left: var(--space-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.info-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 1rem;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

.info-list li strong {
  color: var(--color-text);
}

/* --- Game Promo Section (Homepage) --- */
.game-promo-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.game-promo-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  align-items: center;
}

.game-promo-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  background: var(--color-bg);
}

.game-promo-img {
  width: 100%;
  max-width: 440px;
  height: auto;
  border-radius: var(--radius-md);
}

.game-promo-text {
  padding: var(--space-xl) var(--space-xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.game-promo-text h3 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  color: var(--color-text);
  margin: 0 0 var(--space-md);
  line-height: 1.3;
}

.game-promo-text > p {
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.game-promo-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.game-promo-step {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.game-promo-step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  min-width: 28px;
  border-radius: 50%;
  background: var(--color-accent);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  margin-top: 2px;
}

.game-promo-step strong {
  display: block;
  color: var(--color-text);
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.game-promo-step p {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  line-height: 1.4;
  margin: 0;
}

@media (max-width: 768px) {
  .game-promo-inner {
    grid-template-columns: 1fr;
  }

  .game-promo-visual {
    padding: var(--space-md);
  }

  .game-promo-text {
    padding: var(--space-lg);
  }

  .game-promo-text h3 {
    font-size: 1.4rem;
  }
}


/* --- Coin Popup Animation --- */
.coin-popup {
  position: fixed;
  pointer-events: none;
  z-index: 10000;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--color-primary); /* Changed from gold to brand blue */
  text-shadow: 0 2px 4px rgba(0,0,0,0.1), 0 0 10px rgba(44, 95, 138, 0.2);
  animation: coinFloat 1s cubic-bezier(0.18, 0.89, 0.32, 1.28) forwards;
  white-space: nowrap;
}

.achievement-toast {
  position: fixed;
  right: 24px;
  z-index: 10001;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  max-width: min(340px, calc(100vw - 48px));
  padding: var(--space-sm) var(--space-md);
  border: 1px solid rgba(44, 95, 138, 0.2);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.achievement-toast.show {
  opacity: 1;
  transform: translateY(0);
}

.achievement-toast-icon {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: var(--color-primary);
  color: white;
  font-weight: 800;
}

.achievement-toast strong,
.achievement-toast small {
  display: block;
}

.achievement-toast strong {
  color: var(--color-text);
  font-size: 0.9rem;
}

.achievement-toast small {
  color: var(--color-text-muted);
  font-size: 0.78rem;
  margin-top: 2px;
}

@media (max-width: 480px) {
  .achievement-toast {
    left: 16px;
    right: 16px;
    max-width: none;
  }
}

@keyframes coinFloat {
  0% {
    transform: translate(-50%, 0) scale(0.5);
    opacity: 0;
  }
  20% {
    transform: translate(-50%, -20px) scale(1.2);
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -100px) scale(1);
    opacity: 0;
  }
}

/* ============================================
   STUDY GUIDES
   ============================================ */
.study-guides-hero {
  padding: var(--space-3xl) 0 var(--space-4xl);
}

.study-guides-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  gap: var(--space-3xl);
  align-items: center;
}

.study-guides-hero-copy h1 {
  max-width: 620px;
  margin-bottom: var(--space-lg);
}

.study-guides-hero-copy p:not(.section-label) {
  max-width: 620px;
  font-size: 1.05rem;
}

.study-guides-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.study-guides-hero-art,
.guide-card {
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.study-guides-hero-art {
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.study-guides-hero-art img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.guide-library-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-xl);
}

.learn-study-guides {
  margin: var(--space-2xl) 0;
  padding: var(--space-2xl);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
}

.learn-study-guides-copy {
  max-width: 720px;
  margin-bottom: var(--space-xl);
}

.learn-study-guides-copy h2 {
  margin-bottom: var(--space-sm);
}

.learn-study-guides-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-xl);
}

.guide-card {
  position: relative;
  min-height: 260px;
  padding: var(--space-xl);
}

.guide-card-featured {
  grid-column: span 2;
  display: grid;
  grid-template-columns: minmax(240px, 0.85fr) minmax(0, 1.15fr);
  gap: var(--space-xl);
  padding: var(--space-lg);
}

.guide-card-media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-bg-alt);
}

.guide-card-media img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
}

.guide-card-body {
  align-self: center;
  padding: var(--space-md) var(--space-md) var(--space-md) 0;
}

.guide-card-category {
  margin-bottom: var(--space-xs);
  color: var(--color-accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.guide-card h3 {
  margin-bottom: var(--space-sm);
}

.guide-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.guide-card-meta span {
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  color: var(--color-text-secondary);
  font-size: 0.78rem;
  font-weight: 700;
}

.guide-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

.guide-badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  color: white;
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.guide-card-media .guide-badge {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
}

.guide-badge.free {
  background: var(--color-success);
}

.guide-badge.premium {
  background: var(--color-primary);
}

.premium-guides-block {
  grid-column: 1 / -1;
  display: grid;
  gap: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-light);
}

.premium-guides-heading h3 {
  margin-bottom: var(--space-xs);
}

.premium-guides-heading > p {
  max-width: 760px;
}

.premium-unlock-form {
  display: grid;
  gap: var(--space-sm);
  max-width: 520px;
  margin-top: var(--space-lg);
}

.premium-unlock-form label {
  color: var(--color-text);
  font-size: 0.86rem;
  font-weight: 800;
}

.premium-unlock-controls {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.premium-unlock-controls input {
  min-height: 44px;
  flex: 1;
  min-width: 0;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
}

.premium-unlock-message {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.premium-unlock-form-unlocked .premium-unlock-controls {
  display: none;
}

.guide-card.locked::after {
  content: 'Membership required';
  position: absolute;
  right: var(--space-lg);
  bottom: var(--space-lg);
  color: var(--color-text-muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.premium-guide-card.locked::after {
  content: none;
}

.premium-guides-list {
  display: grid;
  gap: var(--space-lg);
}

.guide-card.locked {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.guide-card.premium-guide-card.locked {
  position: relative;
}

.guide-card.premium-guide-card.locked::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: rgba(255, 253, 249, 0.42);
}

.guide-card.premium-guide-card {
  display: grid;
  grid-template-columns: minmax(260px, 0.42fr) minmax(0, 1fr);
  gap: var(--space-xl);
  align-items: stretch;
  overflow: hidden;
  min-height: 0;
  padding: var(--space-lg);
  border-color: rgba(46, 97, 143, 0.22);
  background: var(--color-surface);
}

.premium-guide-cover {
  position: relative;
  min-height: 310px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: var(--space-sm);
  overflow: hidden;
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  color: white;
  box-shadow: var(--shadow-md);
}

.premium-guide-cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(8, 26, 44, 0.18) 0%, rgba(8, 26, 44, 0.24) 38%, rgba(8, 26, 44, 0.78) 70%, rgba(8, 26, 44, 0.96) 100%);
}

.premium-guide-cover > * {
  position: relative;
  z-index: 1;
}

.premium-guide-cover img {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.01);
}

.premium-guide-cover .guide-badge {
  position: absolute;
  top: var(--space-lg);
  left: var(--space-lg);
  background: rgba(255, 255, 255, 0.18);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.24);
}

.premium-guide-cover strong {
  display: block;
  max-width: 230px;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 400;
  line-height: 1.05;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.65);
}

.premium-guide-cover span:not(.guide-badge) {
  max-width: 240px;
  color: rgba(255, 255, 255, 0.96);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.4;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.72);
}

.premium-guide-content {
  min-width: 0;
  align-self: center;
  padding: var(--space-md) var(--space-md) var(--space-md) 0;
}

.premium-guide-content > p:not(.guide-card-category) {
  max-width: 720px;
}

.premium-guide-highlights {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-sm);
  margin: var(--space-lg) 0;
}

.premium-guide-highlights div {
  padding: var(--space-md);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}

.premium-guide-highlights strong,
.premium-guide-highlights span {
  display: block;
}

.premium-guide-highlights strong {
  margin-bottom: 0.25rem;
  color: var(--color-text);
  font-size: 0.9rem;
}

.premium-guide-highlights span {
  color: var(--color-text-secondary);
  font-size: 0.84rem;
  line-height: 1.42;
}

.guide-card.premium-guide-card .btn:disabled {
  opacity: 0.9;
  cursor: not-allowed;
}

.premium-page-lock {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-2xl);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
}

.premium-download-link.is-locked {
  cursor: not-allowed;
  opacity: 0.55;
  pointer-events: none;
}

@media (max-width: 640px) {
  .premium-unlock-controls {
    align-items: stretch;
    flex-direction: column;
  }
}

.guide-body {
  background: var(--color-bg-alt);
}

.guide-shell {
  padding: calc(var(--nav-height) + var(--space-xl)) var(--space-md) var(--space-4xl);
}

.guide-toolbar {
  max-width: 920px;
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  margin: 0 auto var(--space-lg);
}

.guide-document {
  max-width: 920px;
  margin: 0 auto;
}

.guide-page {
  min-height: 860px;
  margin-bottom: var(--space-xl);
  padding: 56px 64px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-md);
  break-after: page;
}

.guide-cover {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 1.1fr);
  gap: var(--space-xl);
  align-items: center;
}

.guide-cover img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.guide-cover-copy {
  display: grid;
  gap: var(--space-md);
}

.guide-subtitle {
  margin: 0;
  font-size: 1.2rem;
}

.guide-cover-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.guide-cover-summary {
  margin-top: var(--space-md);
  padding: var(--space-lg);
  border: 1px solid var(--color-border-light);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}

.guide-cover-summary ul {
  display: grid;
  gap: 0.35rem;
  margin: var(--space-sm) 0 0;
  padding-left: var(--space-lg);
  color: var(--color-text-secondary);
}

.guide-cover-meta span,
.guide-page-num {
  color: var(--color-text-muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.guide-page h2 {
  margin-bottom: var(--space-md);
}

.guide-page h3 {
  margin: var(--space-lg) 0 var(--space-sm);
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 800;
}

.guide-page p {
  line-height: 1.6;
}

.guide-callout,
.guide-mini-card,
.guide-example,
.guide-three-col > div,
.guide-dense-grid > div,
.guide-fill-grid > div,
.guide-stat-strip > div,
.guide-term-grid > div {
  padding: var(--space-md);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}

.guide-callout {
  margin: var(--space-lg) 0;
  border-left: 4px solid var(--color-primary);
}

.guide-callout.warm {
  border-left-color: var(--color-accent);
}

.guide-two-col,
.guide-three-col,
.guide-dense-grid,
.guide-fill-grid,
.guide-stat-strip,
.guide-term-grid {
  display: grid;
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.guide-two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.guide-three-col {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.guide-dense-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.guide-fill-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.guide-stat-strip {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.guide-term-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.guide-list,
.guide-steps,
.guide-checklist,
.guide-quiz {
  display: grid;
  gap: 0.45rem;
  margin: var(--space-md) 0;
  padding-left: var(--space-lg);
  color: var(--color-text-secondary);
}

.guide-compact-list {
  gap: 0.3rem;
}

.guide-list {
  list-style: disc;
}

.guide-steps,
.guide-quiz {
  list-style: decimal;
}

.guide-checklist {
  list-style: square;
}

.guide-diagram {
  display: grid;
  grid-template-columns: 1fr 48px 1fr 48px 1fr;
  gap: var(--space-sm);
  align-items: center;
  margin: var(--space-lg) 0;
}

.guide-diagram div {
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background: var(--color-primary-lightest);
  color: var(--color-primary);
  font-weight: 800;
  text-align: center;
}

.guide-diagram span {
  height: 2px;
  background: var(--color-accent);
}

.guide-table {
  width: 100%;
  margin: var(--space-lg) 0;
  border-collapse: collapse;
}

.guide-table th,
.guide-table td {
  padding: 0.75rem;
  border: 1px solid var(--color-border-light);
  text-align: left;
}

.guide-table th {
  background: var(--color-primary-lightest);
  color: var(--color-primary);
}

.guide-term-grid strong,
.guide-term-grid span {
  display: block;
}

.guide-term-grid strong {
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.guide-visual {
  width: 100%;
  max-height: 320px;
  object-fit: cover;
  margin: var(--space-md) 0;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.guide-example {
  margin: var(--space-lg) 0;
  border-left: 4px solid var(--color-accent);
}

.guide-key-line {
  margin-top: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  background: var(--color-primary-lightest);
  color: var(--color-primary);
  font-weight: 800;
}

.guide-stat-strip strong,
.guide-stat-strip span,
.guide-term-grid strong,
.guide-term-grid span {
  display: block;
}

.guide-stat-strip strong {
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.guide-stat-strip span {
  color: var(--color-text-secondary);
}

.guide-endnote {
  margin-top: var(--space-xl);
  color: var(--color-primary);
  font-weight: 800;
}

@media (max-width: 900px) {
  .study-guides-hero-grid,
  .guide-card-featured,
  .guide-cover,
  .guide-two-col,
  .guide-three-col,
  .guide-dense-grid,
  .guide-fill-grid,
  .guide-stat-strip,
  .guide-term-grid,
  .guide-diagram {
    grid-template-columns: 1fr;
  }

  .guide-library-grid {
    grid-template-columns: 1fr;
  }

  .learn-study-guides {
    padding: var(--space-xl);
  }

  .learn-study-guides-grid {
    grid-template-columns: 1fr;
  }

  .guide-card-featured,
  .premium-guides-block {
    grid-column: auto;
  }

  .premium-guide-card {
    grid-template-columns: 1fr;
  }

  .guide-page {
    min-height: auto;
    padding: var(--space-xl);
  }
}

@media (max-width: 480px) {
  .guide-toolbar {
    flex-direction: column;
  }

  .guide-toolbar .btn {
    width: 100%;
  }

  .guide-table {
    display: block;
    max-width: 100%;
    overflow-x: auto;
  }
}

/* ============================================
   RANK LADDER
   ============================================ */
.rank-page-header {
  max-width: 760px;
  margin-right: auto;
  margin-left: auto;
}

.rank-ladder-section {
  padding: var(--space-xl) 0 var(--space-3xl);
}

.rank-ladder-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.rank-ladder-heading h2 {
  margin: 0;
}

.rank-total {
  min-width: 150px;
  padding-left: var(--space-lg);
  border-left: 3px solid var(--color-accent);
}

.rank-total span,
.rank-total strong {
  display: block;
}

.rank-total span {
  margin-bottom: 4px;
  color: var(--color-text-muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.rank-total strong {
  color: var(--color-text);
  font-size: 1.35rem;
}

.rank-ladder {
  position: relative;
  padding: 0;
  margin: 0 auto;
  max-width: 900px;
  list-style: none;
}

.rank-ladder::before {
  position: absolute;
  top: 24px;
  bottom: 24px;
  left: 25px;
  width: 2px;
  background: var(--color-border);
  content: '';
}

.rank-ladder-step {
  position: relative;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: var(--space-md);
  align-items: center;
  margin-bottom: 10px;
}

.rank-ladder-step:last-child {
  margin-bottom: 0;
}

.rank-ladder-number {
  position: relative;
  z-index: 1;
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border: 3px solid var(--color-background);
  border-radius: var(--radius-sm);
  color: #ffffff;
  background: var(--rank-color);
  font-weight: 900;
  box-shadow: var(--shadow-sm);
}

.rank-ladder-step:nth-child(1) { --rank-color: #1f2d3d; }
.rank-ladder-step:nth-child(2) { --rank-color: #2f6b69; }
.rank-ladder-step:nth-child(3) { --rank-color: #b96f57; }
.rank-ladder-step:nth-child(4) { --rank-color: #c89c47; }
.rank-ladder-step:nth-child(5) { --rank-color: #4e7392; }
.rank-ladder-step:nth-child(6) { --rank-color: #78916c; }
.rank-ladder-step:nth-child(7) { --rank-color: #8998a3; }

.rank-ladder-card {
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--color-border-light);
  border-left: 5px solid var(--rank-color);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.rank-ladder-step.is-current .rank-ladder-card {
  border-color: var(--color-accent);
  border-left-color: var(--color-accent);
  background: var(--color-warm-light);
  box-shadow: var(--shadow-md);
}

.rank-ladder-step.is-current .rank-ladder-number {
  color: var(--color-text);
  background: var(--color-accent-light);
  box-shadow: 0 0 0 3px rgba(199, 119, 89, 0.18);
}

.rank-ladder-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.rank-ladder-tier,
.rank-ladder-row strong {
  display: block;
}

.rank-ladder-tier {
  margin-bottom: 2px;
  color: var(--color-text-muted);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.rank-ladder-row strong {
  color: var(--color-text);
  font-family: var(--font-serif);
  font-size: 1.45rem;
}

.rank-ladder-meta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-sm);
  color: var(--color-text-secondary);
  font-size: 0.82rem;
  font-weight: 800;
}

.rank-current-label,
.rank-reached-label {
  padding: 4px 7px;
  border-radius: var(--radius-sm);
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
}

.rank-current-label {
  color: #ffffff;
  background: var(--color-accent);
}

.rank-reached-label {
  color: var(--color-success);
  border: 1px solid rgba(91, 140, 90, 0.3);
  background: var(--color-success-light);
}

.rank-ladder-progress {
  padding-top: var(--space-sm);
  margin-top: var(--space-sm);
  border-top: 1px solid rgba(31, 45, 61, 0.12);
}

.rank-progress-labels {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: 6px;
  font-size: 0.75rem;
  font-weight: 800;
}

.rank-progress-track {
  height: 9px;
  border-radius: 999px;
  background: var(--color-border-light);
  overflow: hidden;
}

.rank-progress-track span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--color-accent);
}

@media (max-width: 700px) {
  .rank-ladder-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .rank-total {
    min-width: 0;
  }

  .rank-ladder::before {
    left: 20px;
  }

  .rank-ladder-step {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: var(--space-sm);
  }

  .rank-ladder-number {
    width: 42px;
    height: 42px;
  }

  .rank-ladder-card {
    padding: var(--space-sm) var(--space-md);
  }

  .rank-ladder-row {
    align-items: flex-start;
    flex-direction: column;
    gap: var(--space-xs);
  }

  .rank-ladder-meta {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .rank-ladder-row strong {
    font-size: 1.2rem;
  }

  .rank-progress-labels {
    align-items: flex-start;
    flex-direction: column;
    gap: 2px;
  }
}

@media print {
  .guide-body {
    background: #ffffff;
  }

  .navbar,
  .guide-toolbar {
    display: none !important;
  }

  .guide-shell {
    padding: 0;
  }

  .guide-page {
    width: 8.5in;
    min-height: 11in;
    padding: 0.55in;
    margin: 0 auto;
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }

  .guide-cover-copy {
    min-width: 0;
  }

  .guide-cover {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}