/* ============================================================
   ExamVocab — Warm Scholar Design System
   ============================================================ */

/* ------------------------------------------------------------
   1. Tokens
   ------------------------------------------------------------ */
:root {
  /* Core colors */
  --color-navy:      #1C1C2E;
  --color-terra:     #C45C2A;
  --color-amber:     #F9A875;
  --color-cream:     #F5F0E8;
  --color-card:      #FFFDF7;
  --color-sand:      #D4C8A8;
  --color-parchment: #EDE8DC;

  /* Semantic */
  --color-text:       #444444;
  --color-text-light: #888888;
  --color-border:     #D4C8A8;
  --color-bg:         #F5F0E8;
  --color-surface:    #FFFDF7;

  /* Test tags */
  --tag-gre-bg:    #FDE8D8; --tag-gre-text:   #C45C2A;
  --tag-sat-bg:    #D8EDFD; --tag-sat-text:   #2A6EC4;
  --tag-toefl-bg:  #D8FDE8; --tag-toefl-text: #2AC45C;
  --tag-ielts-bg:  #F0D8FD; --tag-ielts-text: #8C2AC4;

  /* Difficulty tags */
  --tag-easy-bg:   #E8FDE8; --tag-easy-text:  #2A8C2A;
  --tag-hard-bg:   #FDE8E8; --tag-hard-text:  #C42A2A;

  /* Typography */
  --font-heading: 'Poppins', sans-serif;
  --font-body:    'Lora', serif;
  --font-ui:      'Inter', sans-serif;

  --text-display: 3rem;
  --text-h1:      2.25rem;
  --text-h2:      1.5rem;
  --text-h3:      1.125rem;
  --text-body:    0.9375rem;
  --text-ui:      0.875rem;
  --text-sm:      0.8125rem;
  --text-xs:      0.6875rem;

  --leading-tight:  1.2;
  --leading-normal: 1.6;
  --leading-loose:  1.8;

  /* Spacing (4px base grid) */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  /* Radii */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;
}

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

html { font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: var(--leading-normal);
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }

/* ------------------------------------------------------------
   3. Layout
   ------------------------------------------------------------ */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.main-content {
  padding: var(--space-8) 0 var(--space-16);
}

/* ------------------------------------------------------------
   4. Navigation
   ------------------------------------------------------------ */
.nav {
  background: var(--color-navy);
  height: 64px;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 18px;
  color: var(--color-cream);
  letter-spacing: -0.5px;
}
.nav-logo span { color: var(--color-amber); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-link {
  font-family: var(--font-ui);
  font-size: 13px;
  color: #8888AA;
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color 0.15s;
}
.nav-link:hover { color: var(--color-cream); }
.nav-link.active { color: var(--color-amber); font-weight: 500; }

.nav-cta { margin-left: var(--space-2); }

/* ------------------------------------------------------------
   5. Buttons
   ------------------------------------------------------------ */
.btn-primary {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 14px;
  padding: 13px 28px;
  border-radius: var(--radius-md);
  background: var(--color-terra);
  color: #fff;
  border: none;
  box-shadow: 0 4px 0 #9B4420;
  transition: transform 0.15s, box-shadow 0.15s;
  cursor: pointer;
  display: inline-block;
  line-height: 1;
}
.btn-primary:hover  { transform: translateY(-2px); box-shadow: 0 6px 0 #9B4420; color: #fff; }
.btn-primary:active { transform: translateY(2px);  box-shadow: 0 2px 0 #9B4420; }

.btn-secondary {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 14px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-navy);
  border: 2px solid var(--color-sand);
  transition: border-color 0.15s, color 0.15s;
  cursor: pointer;
  display: inline-block;
  line-height: 1;
}
.btn-secondary:hover { border-color: var(--color-terra); color: var(--color-terra); }

.btn-ghost {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 14px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-terra);
  border: none;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
  display: inline-block;
  line-height: 1;
}

/* ------------------------------------------------------------
   6. Tags & Badges
   ------------------------------------------------------------ */
.tag {
  font-family: var(--font-heading);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  display: inline-block;
}

.tag-gre   { background: var(--tag-gre-bg);   color: var(--tag-gre-text); }
.tag-sat   { background: var(--tag-sat-bg);   color: var(--tag-sat-text); }
.tag-toefl { background: var(--tag-toefl-bg); color: var(--tag-toefl-text); }
.tag-ielts { background: var(--tag-ielts-bg); color: var(--tag-ielts-text); }
.tag-easy  { background: var(--tag-easy-bg);  color: var(--tag-easy-text); }
.tag-hard  { background: var(--tag-hard-bg);  color: var(--tag-hard-text); }

/* ------------------------------------------------------------
   7. Flashcard
   ------------------------------------------------------------ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.flashcard {
  width: 100%;
  min-height: 185px;
  border-radius: var(--radius-lg);
  background: var(--color-card);
  box-shadow: 0 4px 0 var(--color-sand), 0 6px 20px rgba(0,0,0,0.08);
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  position: relative;
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.flashcard:hover {
  transform: translateY(-3px);
  box-shadow: 0 7px 0 var(--color-sand), 0 12px 28px rgba(0,0,0,0.12);
}

/* Flip animations
   Strategy: flip-out reaches 90° (invisible) at 65% of its duration and holds there.
   This ensures the card is already invisible when the HTMX swap fires,
   eliminating any visible pause at an intermediate angle.
   swap:260ms fires during the hold window (65% of 380ms = 247ms),
   so any server latency is absorbed while the card is already invisible. */
@keyframes card-flip-out {
  0%   { transform: perspective(700px) rotateY(0deg) scale(1); }
  65%  { transform: perspective(700px) rotateY(90deg) scale(0.95); }
  100% { transform: perspective(700px) rotateY(90deg) scale(0.95); }
}
@keyframes card-flip-in {
  0%   { transform: perspective(700px) rotateY(-90deg) scale(0.95); }
  100% { transform: perspective(700px) rotateY(0deg) scale(1); }
}
.flashcard.flip-out {
  /* cubic-bezier(0.4,0,1,1): aggressive ease-in — rushes to 90° then holds */
  animation: card-flip-out 380ms cubic-bezier(0.4, 0, 1, 1) forwards;
  pointer-events: none;
}
.flashcard.flip-in {
  /* cubic-bezier(0,0,0.2,1): Material ease-out — enters fast, settles smoothly */
  animation: card-flip-in 420ms cubic-bezier(0, 0, 0.2, 1) forwards;
}

.flashcard .tag {
  position: absolute;
  top: 14px;
  left: 16px;
}

.flashcard.back {
  background: var(--color-navy);
}

.card-body {
  padding-top: var(--space-8);  /* clears tag (top-left) and deck btn (top-right) */
  text-align: center;
}

.flashcard .word {
  font-family: var(--font-heading);
  font-size: 26px;
  font-weight: 800;
  color: var(--color-navy);
  letter-spacing: -0.5px;
}

.flashcard.back .definition {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--color-amber);
  line-height: var(--leading-normal);
  text-align: center;
}

.flashcard.back .example {
  font-family: var(--font-ui);
  font-size: 11px;
  color: #8888AA;
  font-style: italic;
  margin-top: var(--space-2);
  text-align: center;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-hint {
  position: absolute;
  bottom: 10px;
  right: 14px;
  font-family: var(--font-ui);
  font-size: 10px;
  color: var(--color-text-light);
  letter-spacing: 0.5px;
}

/* Add-to-deck button on card back — top-right, away from definition */
.card-deck-btn {
  position: absolute;
  top: 12px;
  right: 14px;
  font-family: var(--font-heading);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-amber);
  border: 1px solid rgba(249,168,117,0.4);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.card-deck-btn:hover { background: rgba(249,168,117,0.15); }
.card-deck-btn.added { color: #6EE7B7; border-color: rgba(110,231,183,0.4); }

/* ------------------------------------------------------------
   8. Deck page header
   ------------------------------------------------------------ */
.page-header {
  padding: var(--space-8) 0 var(--space-4);
}

/* Aligns the page header with account-section content below it */
.page-header--account {
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.page-header h1 {
  font-family: var(--font-heading);
  font-size: var(--text-h1);
  font-weight: 700;
  color: var(--color-navy);
  line-height: var(--leading-tight);
}

.page-subtitle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-ui);
  font-size: var(--text-ui);
  color: var(--color-text-light);
  margin-top: var(--space-2);
}

.deck-limit-note {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-terra);
  background: var(--tag-gre-bg);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  letter-spacing: 0.2px;
}

/* ------------------------------------------------------------
   9. Browse page
   ------------------------------------------------------------ */
.browse-header {
  padding: var(--space-8) 0 var(--space-6);
}
.browse-header h1 {
  font-family: var(--font-heading);
  font-size: var(--text-h1);
  font-weight: 700;
  color: var(--color-navy);
  line-height: var(--leading-tight);
}
.browse-subtitle {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-light);
  margin-top: var(--space-1);
}

/* Filter bar */
.filter-bar {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.test-tabs {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.tab {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: var(--radius-full);
  background: var(--color-parchment);
  color: var(--color-text);
  border: none;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.tab:hover  { background: var(--color-sand); }
.tab.active { background: var(--color-navy); color: var(--color-cream); }

.tab-gre.active   { background: var(--tag-gre-text);   color: #fff; }
.tab-sat.active   { background: var(--tag-sat-text);   color: #fff; }
.tab-toefl.active { background: var(--tag-toefl-text); color: #fff; }
.tab-ielts.active { background: var(--tag-ielts-text); color: #fff; }

.search-wrap { flex: 1; min-width: 200px; max-width: 360px; }

.search-input {
  width: 100%;
  font-family: var(--font-ui);
  font-size: 14px;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.15s;
}
.search-input:focus { border-color: var(--color-terra); }

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
}
.pagination-info {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: var(--space-16) 0;
  font-family: var(--font-ui);
  color: var(--color-text-light);
}

/* ------------------------------------------------------------
   9. Progress bar
   ------------------------------------------------------------ */
.progress-bar {
  background: var(--color-parchment);
  height: 10px;
  border-radius: 99px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-terra), var(--color-amber));
  border-radius: 99px;
  transition: width 0.3s ease;
}

/* ------------------------------------------------------------
   10. Modal overlay (nudge / upgrade)
   ------------------------------------------------------------ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(28,28,46,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}
.modal {
  background: var(--color-card);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  max-width: 440px;
  width: 90%;
  text-align: center;
  box-shadow: 0 24px 64px rgba(0,0,0,0.2);
}
.modal h2 {
  font-family: var(--font-heading);
  font-size: var(--text-h3);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}
.modal p {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--color-text);
  margin-bottom: var(--space-6);
  line-height: var(--leading-loose);
}
.modal-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
}

/* ------------------------------------------------------------
   11. HTMX loading indicator
   ------------------------------------------------------------ */
.htmx-indicator { opacity: 0; transition: opacity 0.2s; }
.htmx-request .htmx-indicator { opacity: 1; }

/* ------------------------------------------------------------
   12. PDF unlock strip
   ------------------------------------------------------------ */
.pdf-strip {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.75rem 1rem;
  background: var(--color-navy);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
}
.pdf-strip-label {
  color: var(--color-cream);
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
}
.pdf-strip-tests {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.pdf-chip {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  text-decoration: none;
  background: rgba(255,255,255,0.12);
  color: var(--color-cream);
  transition: background 0.15s;
}
.pdf-chip:hover { background: rgba(255,255,255,0.22); }
.pdf-chip-owned { background: var(--color-terracotta); color: #fff; }
.pdf-chip-owned:hover { background: #b05020; }

/* ------------------------------------------------------------
   Account Page
   ------------------------------------------------------------ */
.account-section {
  max-width: 860px;
  margin: 0 auto var(--space-12);
  padding: 0 var(--space-6);
}

.account-section-title {
  font-family: var(--font-heading);
  font-size: var(--text-h2);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-border);
}

/* Test purchase cards grid */
.account-test-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-4);
}

.account-test-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: box-shadow 0.15s;
}

.account-test-card--owned {
  border-color: #6abf7b;
  background: #f4fdf6;
}

.account-test-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.account-badge {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.account-badge--owned {
  background: #d4f0db;
  color: #2a7a3a;
}

.account-badge--free {
  background: var(--color-parchment);
  color: var(--color-text-light);
}

.account-test-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
  justify-content: flex-end;
}

.account-test-date {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

.account-test-desc {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: var(--leading-normal);
}

.account-test-btn {
  text-align: center;
  padding: 10px 16px;
  font-size: 13px;
}

/* Deck stats */
.account-stats-row {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

@media (max-width: 640px) {
  .account-stats-row {
    grid-template-columns: 1fr 1fr;
  }
}

.account-stat-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-6);
  text-align: center;
}

.account-stat-card--total {
  border-color: var(--color-terra);
}

.account-stat-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-navy);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.account-stat-card--total .account-stat-number {
  color: var(--color-terra);
}

.account-stat-label {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

.account-stat-sub {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  color: var(--color-text-light);
  margin-top: var(--space-1);
}

.account-deck-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* ------------------------------------------------------------
   Login Page
   ------------------------------------------------------------ */
.login-page {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 60vh;
  padding: var(--space-8) var(--space-6);
}

.login-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-12) var(--space-8);
  max-width: 400px;
  width: 100%;
  text-align: center;
  box-shadow: 0 4px 24px rgba(28,28,46,0.07);
}

.login-title {
  font-family: var(--font-heading);
  font-size: var(--text-h1);
  font-weight: 800;
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.login-subtitle {
  font-family: var(--font-ui);
  font-size: var(--text-body);
  color: var(--color-text-light);
  line-height: var(--leading-normal);
  margin-bottom: var(--space-8);
}

.btn-google {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  width: 100%;
  padding: 13px 24px;
  border-radius: var(--radius-md);
  background: var(--color-navy);
  color: var(--color-cream);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: background 0.15s, transform 0.15s;
  text-decoration: none;
  box-shadow: 0 4px 0 #0d0d1e;
}
.btn-google:hover  { background: #2a2a48; transform: translateY(-2px); color: var(--color-cream); }
.btn-google:active { transform: translateY(2px); box-shadow: 0 2px 0 #0d0d1e; }

.login-back {
  margin-top: var(--space-6);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-light);
}
.login-back a { color: var(--color-terra); text-decoration: underline; }

/* ============================================================
   Landing Page
   ============================================================ */

/* Hero -------------------------------------------------------- */
.landing-hero {
  background: var(--color-cream);
  padding: var(--space-16) 0 var(--space-12);
}

.hero-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.hero-eyebrow {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.hero-headline {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-navy);
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: var(--space-4);
}

.hero-sub {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  color: var(--color-text);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-8);
  max-width: 440px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-3);
}

.hero-cta {
  font-size: 15px;
  padding: 15px 32px;
}

.hero-note {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

/* Demo cards stack in hero */
.hero-cards {
  position: relative;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.demo-card {
  position: absolute;
  width: 260px;
  background: var(--color-card);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 0 var(--color-sand), 0 8px 28px rgba(0,0,0,0.1);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 170px;
}

.demo-card--1 {
  transform: rotate(-6deg) translate(-20px, 30px);
  z-index: 1;
  opacity: 0.7;
}

.demo-card--2 {
  transform: rotate(3deg) translate(30px, -10px);
  z-index: 2;
  opacity: 0.85;
}

.demo-card--3 {
  transform: rotate(-1deg) translate(-5px, -40px);
  z-index: 3;
}

.demo-card-body {
  text-align: center;
  padding-top: var(--space-6);
}

.demo-card-word {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 800;
  color: var(--color-navy);
  letter-spacing: -0.5px;
}

.demo-card-phonetic {
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--color-text-light);
  margin-top: var(--space-1);
}

.demo-card-hint {
  font-family: var(--font-ui);
  font-size: 10px;
  color: var(--color-text-light);
  text-align: right;
  margin-top: var(--space-4);
  letter-spacing: 0.5px;
}

/* Sections ---------------------------------------------------- */
.landing-section {
  padding: var(--space-16) 0;
}

.landing-section--alt {
  background: var(--color-parchment);
}

.section-heading {
  font-family: var(--font-heading);
  font-size: var(--text-h1);
  font-weight: 700;
  color: var(--color-navy);
  text-align: center;
  margin-bottom: var(--space-12);
}

/* Feature grid ------------------------------------------------ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.feature-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: var(--space-4);
  line-height: 1;
}

.feature-title {
  font-family: var(--font-heading);
  font-size: var(--text-h3);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.feature-body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--color-text);
  line-height: var(--leading-loose);
}

/* Test grid --------------------------------------------------- */
.test-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.test-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.test-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.test-card-price {
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-terra);
  background: var(--tag-gre-bg);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background 0.15s;
}
.test-card-price:hover { background: var(--color-sand); }

.test-card-count {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-navy);
  line-height: 1;
}

.test-card-label {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-light);
  margin-top: -var(--space-2);
}

.test-card-desc {
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: var(--leading-normal);
  flex: 1;
}

.test-card-btn {
  font-size: 13px;
  padding: 9px 16px;
  text-align: center;
}

/* Pricing ----------------------------------------------------- */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  max-width: 720px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.pricing-card--featured {
  border-color: var(--color-terra);
  box-shadow: 0 6px 0 #9B4420, 0 12px 32px rgba(196,92,42,0.15);
}

.pricing-tier {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-terra);
}

.pricing-price {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-navy);
  line-height: 1;
}

.pricing-per {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-light);
}

.pricing-desc {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--color-text-light);
  line-height: var(--leading-normal);
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
  margin-top: var(--space-2);
  padding-top: var(--space-4);
  border-top: 2px solid var(--color-border);
}

.pricing-features li {
  font-family: var(--font-ui);
  font-size: var(--text-ui);
  color: var(--color-text);
  padding-left: var(--space-6);
  position: relative;
}

.pricing-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-terra);
  font-weight: 700;
}

.pricing-cta {
  text-align: center;
  margin-top: var(--space-2);
}

/* FAQ --------------------------------------------------------- */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-question {
  font-family: var(--font-heading);
  font-size: var(--text-body);
  font-weight: 600;
  color: var(--color-navy);
  padding: var(--space-4) 0;
  cursor: pointer;
  list-style: none;
}

.faq-question::-webkit-details-marker { display: none; }

.faq-question::after {
  content: "+";
  float: right;
  font-size: 1.25rem;
  color: var(--color-text-light);
  transition: transform 0.2s;
}

.faq-item[open] .faq-question::after {
  content: "\2212";
}

.faq-answer {
  font-family: var(--font-body);
  font-size: var(--text-small);
  color: var(--color-text);
  line-height: 1.7;
  padding: 0 0 var(--space-4);
}

/* Breadcrumbs ------------------------------------------------- */
.breadcrumb {
  padding: var(--space-3) 0;
  max-width: 1120px;
  margin: 0 auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.breadcrumb-list {
  list-style: none;
  display: flex;
  gap: 0;
  padding: 0;
  margin: 0;
  font-family: var(--font-ui);
  font-size: var(--text-small);
  color: var(--color-text-light);
}

.breadcrumb-list li + li::before {
  content: "›";
  margin: 0 var(--space-2);
}

.breadcrumb-list a {
  color: var(--color-text-light);
  text-decoration: none;
}

.breadcrumb-list a:hover {
  color: var(--color-terra);
  text-decoration: underline;
}

/* Reviews ----------------------------------------------------- */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  max-width: 960px;
  margin: 0 auto;
}

.review-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  margin: 0;
}

.review-text {
  font-family: var(--font-body);
  font-size: var(--text-small);
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: var(--space-4);
  font-style: italic;
}

.review-author {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.review-name {
  font-family: var(--font-heading);
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--color-navy);
}

.review-detail {
  font-family: var(--font-ui);
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

/* About ------------------------------------------------------- */
.about-content {
  max-width: 720px;
  margin: 0 auto;
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--color-text);
  line-height: 1.8;
}

.about-content a {
  color: var(--color-terra);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.about-content a:hover {
  color: var(--color-navy);
}

/* External links in content ----------------------------------- */
.test-card-desc a,
.faq-answer a {
  color: var(--color-terra);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.test-card-desc a:hover,
.faq-answer a:hover {
  color: var(--color-navy);
}

/* Keyboard focus for flashcards ------------------------------- */
.flashcard:focus {
  outline: 2px solid var(--color-terra);
  outline-offset: 2px;
}

/* Footer CTA -------------------------------------------------- */
.landing-footer-cta {
  background: var(--color-navy);
  padding: var(--space-16) 0;
  text-align: center;
}

.footer-cta-heading {
  font-family: var(--font-heading);
  font-size: var(--text-h1);
  font-weight: 700;
  color: var(--color-cream);
  margin-bottom: var(--space-3);
}

.footer-cta-sub {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: #8888AA;
  margin-bottom: var(--space-8);
  line-height: var(--leading-normal);
}

/* Landing responsive ------------------------------------------ */
@media (max-width: 900px) {
  .test-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 700px) {
  .hero-layout {
    grid-template-columns: 1fr;
  }
  .hero-cards {
    display: none;
  }
  .hero-headline {
    font-size: 2.25rem;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .test-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
}