/* ============================================================
   LitLex Free — main.css
   Navy & Gold mobile-first design
   ============================================================ */

:root {
  --bg:        #0e1628;
  --bg2:       #0a1020;
  --bg3:       #111d35;
  --ink:       #f0e6c8;
  --ink2:      #c8bfa8;
  --ink3:      #8a9ab5;
  --gold:      #c9a84c;
  --gold2:     #e8963a;
  --rule:      rgba(201,168,76,0.2);
  --radius:    12px;

  /* AWL level colors */
  --l1: #4caf89;
  --l2: #7bc8a4;
  --l3: #c9a84c;
  --l4: #e8963a;
  --l5: #e05c5c;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Lato', sans-serif;
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
  line-height: 1.6;
}

/* ── NAVBAR ─────────────────────────────────────────────── */
.navbar {
  background: var(--bg2);
  border-bottom: 1px solid var(--rule);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-logo {
  font-family: 'Playfair Display', serif;
  font-size: 22px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
}
.nav-logo em { color: var(--gold); font-style: italic; }

.nav-links { display: flex; gap: 24px; }
.nav-links a {
  font-size: 13px;
  color: var(--ink3);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--gold); }

.nav-auth { display: flex; align-items: center; gap: 10px; }
.nav-username {
  font-size: 13px;
  color: var(--gold);
  font-style: italic;
  font-family: 'Playfair Display', serif;
}

.nav-btn {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink3);
  text-decoration: none;
  padding: 6px 14px;
  border: 1px solid var(--rule);
  border-radius: 20px;
  transition: all 0.2s;
}
.nav-btn:hover { color: var(--gold); border-color: var(--gold); }
.nav-btn-gold {
  background: var(--gold);
  color: var(--bg);
  border-color: var(--gold);
  font-weight: 700;
}
.nav-btn-gold:hover { background: var(--gold2); border-color: var(--gold2); color: var(--bg); }

/* Hide nav-links on mobile */
@media (max-width: 600px) {
  .nav-links { display: none; }
  .navbar { padding: 12px 16px; }
}

/* ── HERO ────────────────────────────────────────────────── */
.hero {
  text-align: center;
  padding: 48px 24px 40px;
  border-bottom: 1px solid var(--rule);
}
.hero-ornament {
  color: var(--gold);
  letter-spacing: 10px;
  font-size: 16px;
  margin-bottom: 20px;
  opacity: 0.7;
}
.hero h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(28px, 5vw, 48px);
  line-height: 1.2;
  margin-bottom: 12px;
}
.hero h1 em { color: var(--gold); font-style: italic; }
.hero-sub {
  font-size: 16px;
  color: var(--ink3);
  font-style: italic;
  font-family: 'Playfair Display', serif;
  max-width: 500px;
  margin: 0 auto 28px;
}

/* ── LIBRARY ─────────────────────────────────────────────── */
.library { padding: 40px 24px; max-width: 900px; margin: 0 auto; }

.section-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}
.section-title {
  font-family: 'Playfair Display', serif;
  font-size: 18px;
  color: var(--gold);
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.section-rule { flex: 1; height: 1px; background: var(--rule); }

.book-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.book-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 20px;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all 0.2s;
  cursor: pointer;
}
.book-card:hover {
  background: rgba(201,168,76,0.06);
  border-color: var(--gold);
  transform: translateY(-2px);
}

.book-spine {
  width: 8px;
  min-height: 60px;
  border-radius: 4px;
  flex-shrink: 0;
}
.book-info { flex: 1; min-width: 0; }
.book-title {
  font-family: 'Playfair Display', serif;
  font-size: 16px;
  color: var(--ink);
  margin-bottom: 4px;
  line-height: 1.3;
}
.book-author {
  font-size: 12px;
  color: var(--ink3);
  margin-bottom: 6px;
}
.book-year {
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.05em;
}

/* ── BOOK INTRO PAGE ─────────────────────────────────────── */
.book-intro { max-width: 800px; margin: 0 auto; padding: 40px 24px; }

.book-header {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  margin-bottom: 32px;
}
.book-cover-block {
  width: 100px;
  min-height: 140px;
  border-radius: 8px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px 8px;
}
.book-cover-title {
  font-family: 'Playfair Display', serif;
  font-size: 11px;
  color: rgba(255,255,255,0.9);
  text-align: center;
  line-height: 1.4;
  margin-bottom: 8px;
}
.book-cover-author {
  font-size: 9px;
  color: rgba(255,255,255,0.6);
  text-align: center;
}

.book-meta h1 {
  font-family: 'Playfair Display', serif;
  font-size: 28px;
  margin-bottom: 4px;
}
.book-meta-author {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  color: var(--gold);
  font-size: 16px;
  margin-bottom: 12px;
}
.book-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.book-tag {
  font-size: 11px;
  color: var(--ink3);
  background: var(--bg3);
  border: 1px solid var(--rule);
  padding: 4px 12px;
  border-radius: 20px;
}

.begin-btn {
  display: inline-block;
  background: var(--gold);
  color: var(--bg);
  font-family: 'Lato', sans-serif;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.08em;
  padding: 12px 28px;
  border-radius: 24px;
  text-decoration: none;
  transition: background 0.2s;
}
.begin-btn:hover { background: var(--gold2); }

.content-box {
  background: var(--bg3);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 16px;
}
.content-box-label {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  opacity: 0.8;
  margin-bottom: 10px;
}
.content-box p {
  font-family: 'Playfair Display', serif;
  font-size: 15px;
  color: var(--ink2);
  line-height: 1.7;
  font-style: italic;
}
.content-box-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.chapter-list { margin-top: 32px; }
.chapter-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid var(--rule);
  border-radius: 10px;
  margin-bottom: 8px;
  text-decoration: none;
  color: var(--ink2);
  transition: all 0.2s;
}
.chapter-item:hover {
  background: rgba(201,168,76,0.06);
  border-color: var(--gold);
  color: var(--ink);
}
.chapter-num {
  font-size: 11px;
  color: var(--gold);
  width: 28px;
  flex-shrink: 0;
  font-weight: 700;
}
.chapter-title-text { flex: 1; font-size: 14px; }

@media (max-width: 600px) {
  .book-header { flex-direction: column; }
  .content-box-grid { grid-template-columns: 1fr; }
}

/* ── READER ──────────────────────────────────────────────── */
.reader-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  min-height: calc(100vh - 60px);
}

.reader-main { padding: 32px 40px; border-right: 1px solid var(--rule); }
.reader-book-label {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink3);
  margin-bottom: 6px;
}
.reader-chapter-title {
  font-family: 'Playfair Display', serif;
  font-size: 24px;
  color: var(--ink);
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rule);
}

.reader-text {
  font-family: 'Playfair Display', serif;
  font-size: 17px;
  line-height: 2;
  color: var(--ink2);
  text-align: justify;
}
.reader-text p { margin-bottom: 1.4em; }

/* AWL word highlighting */
.awl-word {
  cursor: pointer;
  border-bottom: 2px solid;
  transition: opacity 0.15s;
}
.awl-word:hover { opacity: 0.8; }
.level-1 { color: var(--l1); border-color: var(--l1); }
.level-2 { color: var(--l2); border-color: var(--l2); }
.level-3 { color: var(--l3); border-color: var(--l3); }
.level-4 { color: var(--l4); border-color: var(--l4); }
.level-5 { color: var(--l5); border-color: var(--l5); }

/* Reader nav */
.reader-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  margin-top: 32px;
  border-top: 1px solid var(--rule);
}
.reader-nav a {
  color: var(--gold);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.05em;
  padding: 8px 16px;
  border: 1px solid var(--rule);
  border-radius: 20px;
  transition: all 0.2s;
}
.reader-nav a:hover { border-color: var(--gold); background: rgba(201,168,76,0.08); }
.quiz-btn {
  background: var(--gold) !important;
  color: var(--bg) !important;
  border-color: var(--gold) !important;
  font-weight: 700 !important;
}

/* Sidebar */
.reader-sidebar {
  background: var(--bg2);
  padding: 24px 16px;
  overflow-y: auto;
  position: sticky;
  top: 60px;
  height: calc(100vh - 60px);
}
.sidebar-title {
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
  opacity: 0.8;
}
.awl-level-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rule);
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  color: var(--ink3);
}
.legend-dot { width: 8px; height: 8px; border-radius: 50%; }

.word-card {
  background: var(--bg3);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.2s;
}
.word-card:hover { border-color: var(--gold); }
.word-card-word {
  font-family: 'Playfair Display', serif;
  font-size: 15px;
  color: var(--ink);
  font-style: italic;
  margin-bottom: 3px;
}
.word-card-meaning {
  font-size: 11px;
  color: var(--ink3);
  line-height: 1.4;
}
.word-card-count {
  font-size: 10px;
  color: var(--gold);
  margin-top: 4px;
  opacity: 0.7;
}

@media (max-width: 768px) {
  .reader-layout { grid-template-columns: 1fr; }
  .reader-sidebar { display: none; }
  .reader-main { padding: 20px 16px; }
  .reader-text { font-size: 16px; }
}

/* ── WORD POPUP ──────────────────────────────────────────── */
.popup-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 200;
  align-items: flex-end;
  justify-content: center;
}
.popup-overlay.active { display: flex; }

.word-popup {
  background: var(--bg2);
  border: 1px solid var(--rule);
  border-radius: 20px 20px 0 0;
  padding: 28px 24px;
  width: 100%;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  animation: slideUp 0.25s ease;
}
@keyframes slideUp {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.popup-word {
  font-family: 'Playfair Display', serif;
  font-size: 28px;
  color: var(--gold);
  margin-bottom: 4px;
}
.popup-level {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink3);
  margin-bottom: 12px;
}
.popup-meaning {
  font-family: 'Playfair Display', serif;
  font-size: 16px;
  color: var(--ink2);
  font-style: italic;
  line-height: 1.6;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rule);
}
.popup-section-title {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  opacity: 0.7;
  margin-bottom: 6px;
  margin-top: 14px;
}
.popup-detail {
  font-size: 13px;
  color: var(--ink3);
  line-height: 1.6;
}
.popup-example {
  font-family: 'Playfair Display', serif;
  font-size: 14px;
  color: var(--ink2);
  font-style: italic;
  line-height: 1.6;
  border-left: 3px solid var(--gold);
  padding-left: 12px;
}
.popup-close {
  width: 100%;
  padding: 12px;
  margin-top: 20px;
  background: rgba(201,168,76,0.1);
  border: 1px solid var(--rule);
  border-radius: 10px;
  color: var(--gold);
  font-family: 'Lato', sans-serif;
  font-size: 13px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: all 0.2s;
}
.popup-close:hover { background: rgba(201,168,76,0.2); }

/* ── AUTH PAGES ──────────────────────────────────────────── */
.auth-page {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
}
.auth-box {
  background: var(--bg2);
  border: 1px solid var(--rule);
  border-radius: 20px;
  padding: 36px 32px;
  width: 100%;
  max-width: 420px;
}
.auth-title {
  font-family: 'Playfair Display', serif;
  font-size: 24px;
  color: var(--ink);
  margin-bottom: 4px;
}
.auth-sub {
  font-size: 13px;
  color: var(--ink3);
  margin-bottom: 24px;
}
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink3);
  margin-bottom: 6px;
}
.form-input {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--ink);
  font-family: 'Lato', sans-serif;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}
.form-input:focus { border-color: var(--gold); }
.form-btn {
  width: 100%;
  padding: 13px;
  background: var(--gold);
  color: var(--bg);
  border: none;
  border-radius: 10px;
  font-family: 'Lato', sans-serif;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.08em;
  cursor: pointer;
  margin-top: 8px;
  transition: background 0.2s;
}
.form-btn:hover { background: var(--gold2); }
.form-error {
  background: rgba(224,92,92,0.1);
  border: 1px solid rgba(224,92,92,0.3);
  color: #e05c5c;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 16px;
}
.auth-switch {
  text-align: center;
  margin-top: 20px;
  font-size: 13px;
  color: var(--ink3);
}
.auth-switch a { color: var(--gold); text-decoration: none; }

/* ── QUIZ ────────────────────────────────────────────────── */
.quiz-page { max-width: 700px; margin: 0 auto; padding: 40px 24px; }
.quiz-header { margin-bottom: 32px; }
.quiz-book-label {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 6px;
}
.quiz-title {
  font-family: 'Playfair Display', serif;
  font-size: 24px;
  color: var(--ink);
}
.question-card {
  background: var(--bg2);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}
.question-num {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  opacity: 0.7;
  margin-bottom: 10px;
}
.question-text {
  font-family: 'Playfair Display', serif;
  font-size: 16px;
  color: var(--ink);
  line-height: 1.5;
  margin-bottom: 16px;
}
.option-btn {
  width: 100%;
  text-align: left;
  padding: 12px 16px;
  margin-bottom: 8px;
  background: var(--bg3);
  border: 1px solid var(--rule);
  border-radius: 10px;
  color: var(--ink2);
  font-family: 'Lato', sans-serif;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
}
.option-btn:hover { border-color: var(--gold); color: var(--ink); }
.option-btn.correct { border-color: #4caf89; background: rgba(76,175,137,0.12); color: #4caf89; }
.option-btn.wrong { border-color: #e05c5c; background: rgba(224,92,92,0.1); color: #e05c5c; }

.submit-quiz-btn {
  width: 100%;
  padding: 14px;
  background: var(--gold);
  color: var(--bg);
  border: none;
  border-radius: 10px;
  font-family: 'Lato', sans-serif;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.08em;
  cursor: pointer;
  margin-top: 8px;
  transition: background 0.2s;
}
.submit-quiz-btn:hover { background: var(--gold2); }

.quiz-result-box {
  background: var(--bg2);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  margin-bottom: 24px;
}
.result-score {
  font-family: 'Playfair Display', serif;
  font-size: 48px;
  color: var(--gold);
  margin-bottom: 8px;
}
.result-label {
  font-size: 14px;
  color: var(--ink3);
}

/* ── FOOTER ──────────────────────────────────────────────── */
.footer {
  background: var(--bg2);
  border-top: 1px solid var(--rule);
  padding: 24px;
  margin-top: 60px;
}
.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-logo {
  font-family: 'Playfair Display', serif;
  font-size: 18px;
  color: var(--ink);
  font-weight: 700;
}
.footer-logo em { color: var(--gold); font-style: italic; }
.footer-links { display: flex; gap: 20px; }
.footer-links a {
  font-size: 12px;
  color: var(--ink3);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--gold); }
.footer-copy { font-size: 11px; color: var(--ink3); }

/* ── FLASH ───────────────────────────────────────────────── */
.flash-wrap { padding: 12px 24px 0; }
.flash {
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 8px;
}
.flash-error { background: rgba(224,92,92,0.1); color: #e05c5c; border: 1px solid rgba(224,92,92,0.3); }
.flash-success { background: rgba(76,175,137,0.1); color: #4caf89; border: 1px solid rgba(76,175,137,0.3); }

/* ── UTILITIES ───────────────────────────────────────────── */
.text-gold { color: var(--gold); }
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }