/* ── RESET & TOKENS ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0f0f0f;
  --surface:   #181818;
  --surface2:  #222222;
  --border:    #2e2e2e;
  --border2:   #3a3a3a;
  --amber:     #d0d0d0;
  --amber-dim: #909090;
  --amber-glow:rgba(200,200,200,0.08);
  --text:      #ebebeb;
  --text2:     #909090;
  --text3:     #555555;
  --link:      #c8c8c8;
  --danger:    #c45a5a;
  --radius:    6px;
  --font-ui:   'Inter', system-ui, sans-serif;
  --font-serif:'Lora', Georgia, serif;
}

[data-theme="light"] {
  --bg:        #f7f7f7;
  --surface:   #ffffff;
  --surface2:  #f0f0f0;
  --border:    #e0e0e0;
  --border2:   #cccccc;
  --amber:     #222222;
  --amber-dim: #555555;
  --amber-glow:rgba(0,0,0,0.06);
  --text:      #111111;
  --text2:     #555555;
  --text3:     #999999;
  --link:      #333333;
  --danger:    #b03030;
}

[data-theme="light"] .topbar {
  background: rgba(247,247,247,0.92);
}
[data-theme="light"] .hero {
  background: linear-gradient(180deg,rgba(0,0,0,0.03) 0%,transparent 100%);
}
[data-theme="light"] .search-input {
  background: #fff;
}
[data-theme="light"] #gate {
  background: #f7f7f7;
}
[data-theme="light"] .gate-box {
  background: #fff;
  border-color: #e0e0e0;
}
[data-theme="light"] .gate-input {
  background: #f7f7f7;
  border-color: #ddd;
  color: #111;
}
[data-theme="light"] .gate-btn {
  background: #111;
  color: #fff;
}
[data-theme="light"] .gate-btn:hover {
  background: #333;
}

html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── TOPBAR ─────────────────────────────────────────────────────── */
.topbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(14,15,20,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 52px;
}

.topbar-inner {
  max-width: 1280px; margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex; align-items: center; justify-content: space-between;
}

.logo {
  font-size: 15px; font-weight: 600;
  color: var(--text); letter-spacing: 0.01em;
  display: flex; align-items: center; gap: 8px;
}
.logo:hover { text-decoration: none; }

.topbar-meta {
  font-size: 12px; color: var(--text3);
  letter-spacing: 0.04em; text-transform: uppercase;
}

/* ── HERO ───────────────────────────────────────────────────────── */
.hero {
  padding: 72px 24px 48px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(212,168,75,0.04) 0%, transparent 100%);
}

.hero-inner { max-width: 760px; margin: 0 auto; }

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 16px;
}

.hero-sub {
  font-size: 16px; font-weight: 300;
  color: var(--text2); line-height: 1.6;
  max-width: 580px; margin-bottom: 40px;
}

/* ── SEARCH ─────────────────────────────────────────────────────── */
.search-wrap { display: flex; flex-direction: column; gap: 10px; }

.search-mode-tabs {
  display: flex; gap: 4px;
}

.mode-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text2);
  font-family: var(--font-ui);
  font-size: 12px; font-weight: 500;
  letter-spacing: 0.04em;
  padding: 6px 14px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
}

.mode-btn:hover { border-color: var(--amber-dim); color: var(--text); }

.mode-btn.active {
  background: var(--amber-glow);
  border-color: var(--amber);
  color: var(--amber);
}

.search-box { position: relative; }

.search-input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 17px;
  padding: 14px 48px 14px 18px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
  caret-color: var(--amber);
}

.search-input::placeholder { color: var(--text3); }

.search-input:focus {
  border-color: var(--amber);
  box-shadow: 0 0 0 3px var(--amber-glow);
}

.search-status {
  position: absolute; right: 16px; top: 50%;
  transform: translateY(-50%);
  font-size: 11px; color: var(--text3);
  letter-spacing: 0.04em; text-transform: uppercase;
  pointer-events: none;
}

.ai-hint {
  font-size: 12px; color: var(--text2);
  display: flex; align-items: center; gap: 8px;
}

.ai-pill {
  background: var(--amber-glow);
  border: 1px solid var(--amber-dim);
  color: var(--amber);
  font-size: 10px; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase;
  padding: 2px 8px; border-radius: 3px;
}

/* ── CATEGORIES ─────────────────────────────────────────────────── */
.cats-section {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.cats-inner { max-width: 1280px; margin: 0 auto; }

.cats-label {
  font-size: 10px; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text3); margin-bottom: 12px;
}

.cats-scroll {
  display: flex; flex-wrap: wrap; gap: 6px;
}

.cat-pill {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text2);
  font-family: var(--font-ui);
  font-size: 12px; font-weight: 500;
  padding: 5px 12px;
  cursor: pointer;
  display: flex; align-items: center; gap: 6px;
  transition: all 0.12s; white-space: nowrap;
}

.cat-pill:hover { border-color: var(--amber-dim); color: var(--text); }

.cat-pill.active {
  background: var(--amber-glow);
  border-color: var(--amber);
  color: var(--amber);
}

.cat-count {
  font-size: 10px; opacity: 0.7;
  font-variant-numeric: tabular-nums;
}

/* ── MAIN GRID ──────────────────────────────────────────────────── */
.main-wrap {
  max-width: 1280px; margin: 0 auto;
  padding: 24px 24px 48px;
}

.results-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
}

.results-count {
  font-size: 13px; color: var(--text2);
  font-variant-numeric: tabular-nums;
}

.sort-sel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text2);
  font-family: var(--font-ui);
  font-size: 12px;
  padding: 6px 10px;
  outline: none; cursor: pointer;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

/* ── ARTICLE CARD ───────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  display: flex; flex-direction: column; gap: 10px;
  transition: border-color 0.15s, transform 0.12s;
  cursor: pointer;
  position: relative;
}

.card:hover {
  border-color: var(--border2);
  transform: translateY(-1px);
}

.card:hover .card-title { color: var(--amber); }

.card-cat {
  font-size: 10px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--amber-dim);
}

.card-title {
  font-family: var(--font-serif);
  font-size: 15px; font-weight: 500;
  line-height: 1.45;
  color: var(--text);
  transition: color 0.12s;
}

.card-desc {
  font-size: 13px; color: var(--text2);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: auto;
}

.card-link {
  font-size: 11px; font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--amber-dim);
  transition: color 0.12s;
}

.card:hover .card-link { color: var(--amber); }

.card-score {
  font-size: 10px; color: var(--text3);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

/* Score bar for AI search results */
.score-bar {
  position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
  background: var(--border); border-radius: 0 0 8px 8px; overflow: hidden;
}
.score-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--amber-dim), var(--amber));
  transition: width 0.4s ease;
}

/* ── LOAD MORE ──────────────────────────────────────────────────── */
.load-more-wrap { text-align: center; margin-top: 32px; }

.load-more-btn {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  color: var(--text2);
  font-family: var(--font-ui);
  font-size: 13px; font-weight: 500;
  padding: 10px 28px;
  cursor: pointer;
  transition: all 0.15s;
}

.load-more-btn:hover { border-color: var(--amber); color: var(--amber); }

/* ── EMPTY / ERROR STATES ───────────────────────────────────────── */
.empty-state {
  grid-column: 1/-1;
  text-align: center; padding: 60px 20px;
  color: var(--text3);
}

.empty-state .empty-icon { font-size: 48px; margin-bottom: 16px; }
.empty-state p { font-size: 14px; margin-top: 8px; }

/* ── AI LOADING OVERLAY ─────────────────────────────────────────── */
.ai-loading {
  position: fixed; inset: 0; z-index: 500;
  background: rgba(14,15,20,0.85);
  backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
}

.ai-loading-inner {
  display: flex; flex-direction: column; align-items: center; gap: 16px;
}

.ai-spinner {
  width: 32px; height: 32px;
  border: 2px solid var(--border2);
  border-top-color: var(--amber);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.ai-loading-text {
  font-size: 13px; color: var(--text2);
  letter-spacing: 0.04em;
}

/* ── ARTICLE PAGE ───────────────────────────────────────────────── */
.article-page { background: var(--bg); }

.article-wrap {
  max-width: 720px; margin: 0 auto;
  padding: 48px 24px 96px;
}

.article-meta { margin-bottom: 16px; }

.cat-badge {
  display: inline-block;
  font-size: 10px; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--amber);
  border: 1px solid var(--amber-dim);
  padding: 3px 10px; border-radius: 3px;
}

.article-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 600; line-height: 1.2;
  letter-spacing: -0.015em;
  margin-bottom: 24px;
}

.article-desc {
  font-size: 16px; line-height: 1.75;
  color: var(--text2); margin-bottom: 24px;
}

.article-heading {
  font-size: 14px; font-weight: 500;
  color: var(--text3); margin: 8px 0;
  padding-left: 12px;
  border-left: 2px solid var(--border2);
}

.read-link {
  display: inline-flex; align-items: center; gap: 8px;
  margin-top: 32px;
  background: var(--amber-glow);
  border: 1px solid var(--amber-dim);
  color: var(--amber);
  font-size: 13px; font-weight: 500;
  padding: 10px 20px; border-radius: var(--radius);
  transition: all 0.15s;
}

.read-link:hover {
  background: rgba(212,168,75,0.2);
  border-color: var(--amber);
  text-decoration: none;
}

/* ── FOOTER ─────────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  background: var(--surface);
}

.footer-inner {
  max-width: 1280px; margin: 0 auto;
  font-size: 12px; color: var(--text3);
  line-height: 1.7;
  display: flex; flex-direction: column; gap: 4px;
}

/* ── HIGHLIGHT ──────────────────────────────────────────────────── */
mark {
  background: rgba(212,168,75,0.25);
  color: var(--amber);
  border-radius: 2px;
  padding: 0 2px;
}

/* ── RESPONSIVE ─────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .hero { padding: 48px 16px 32px; }
  .hero-title { font-size: 1.8rem; }
  .cats-section { padding: 16px; }
  .main-wrap { padding: 16px; }
  .grid { grid-template-columns: 1fr; }
  .topbar-meta { display: none; }
}

/* ── THEME TOGGLE ───────────────────────────────────────────────── */
.topbar-right {
  display: flex; align-items: center; gap: 16px;
}

.theme-toggle {
  background: none; border: 1px solid var(--border);
  color: var(--text2); font-size: 14px;
  width: 32px; height: 32px; border-radius: 50%;
  cursor: pointer; transition: all 0.15s;
  display: flex; align-items: center; justify-content: center;
}
.theme-toggle:hover { border-color: var(--amber); color: var(--amber); }

/* ── MOBILE BOTTOM NAV ──────────────────────────────────────────── */
.mobile-nav {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 200;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 8px 0 max(8px, env(safe-area-inset-bottom));
  grid-template-columns: repeat(3, 1fr);
}

.mnav-btn {
  background: none; border: none; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  padding: 4px 0; font-family: var(--font-ui);
  color: var(--text3); transition: color 0.15s; width: 100%;
}
.mnav-btn.active { color: var(--amber); }
.mnav-icon { font-size: 18px; line-height: 1; }
.mnav-label { font-size: 10px; letter-spacing: 0.04em; text-transform: uppercase; }

/* ── MOBILE ENHANCEMENTS ────────────────────────────────────────── */
@media (max-width: 640px) {
  /* Show bottom nav */
  .mobile-nav { display: grid; }

  /* Pad body so content clears bottom nav */
  body { padding-bottom: 70px; }

  /* Topbar */
  .topbar-meta { display: none; }
  .topbar-inner { padding: 0 16px; }
  .logo { font-size: 14px; }
  .theme-toggle { display: none; } /* use bottom nav instead */

  /* Hero — compact on mobile */
  .hero { padding: 32px 16px 24px; }
  .hero-title { font-size: 1.6rem; line-height: 1.2; }
  .hero-sub { font-size: 14px; margin-bottom: 24px; }

  /* Search — full-width, bigger tap target */
  .search-input { font-size: 16px; padding: 14px 16px; } /* 16px prevents iOS zoom */
  .search-mode-tabs { gap: 6px; }
  .mode-btn { padding: 8px 16px; font-size: 12px; flex: 1; text-align: center; }

  /* Categories — horizontal scroll, no wrap */
  .cats-section { padding: 12px 0 12px 16px; }
  .cats-scroll { flex-wrap: nowrap; overflow-x: auto; padding-right: 16px;
    scrollbar-width: none; -webkit-overflow-scrolling: touch; }
  .cats-scroll::-webkit-scrollbar { display: none; }
  .cat-pill { white-space: nowrap; padding: 7px 14px; font-size: 13px; flex-shrink: 0; }

  /* Results header */
  .main-wrap { padding: 12px 12px 48px; }
  .results-header { margin-bottom: 12px; }
  .results-count { font-size: 12px; }

  /* Cards — full width, better tap target */
  .grid { gap: 10px; }
  .card { padding: 16px; }
  .card-title { font-size: 14px; }
  .card-desc { font-size: 12px; -webkit-line-clamp: 2; }

  /* Footer */
  .footer { margin-bottom: 0; padding: 20px 16px; font-size: 11px; }

  /* Load more */
  .load-more-btn { width: 100%; padding: 14px; font-size: 13px; }

  /* AI overlay */
  .ai-loading-inner { padding: 0 24px; text-align: center; }
}

/* ── TABLET ─────────────────────────────────────────────────────── */
@media (min-width: 641px) and (max-width: 1024px) {
  .hero { padding: 48px 32px 36px; }
  .main-wrap { padding: 20px 32px 48px; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
}