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

:root {
  --bg:        #08090d;
  --surface:   #111218;
  --card:      #16181f;
  --card-hover:#1c1e28;
  --border:    #22253a;
  --border-hi: #3a3f5c;

  --accent:    #7c3aed;
  --accent-lo: rgba(124,58,237,.12);
  --accent-hi: #9d60ff;
  --cyan:      #06b6d4;
  --cyan-lo:   rgba(6,182,212,.12);
  --green:     #22c55e;
  --green-lo:  rgba(34,197,94,.12);
  --amber:     #f59e0b;
  --red:       #ef4444;

  --text:      #e2e8f0;
  --text-2:    #94a3b8;
  --text-3:    #64748b;

  --radius:    12px;
  --radius-sm: 8px;
  --radius-xl: 20px;

  --shadow:    0 4px 24px rgba(0,0,0,.5);
  --shadow-sm: 0 2px 8px rgba(0,0,0,.4);

  --font: 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', 'Fira Code', monospace;

  --transition: 180ms ease;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Scrollbar ───────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--surface); }
::-webkit-scrollbar-thumb { background: var(--border-hi); border-radius: 3px; }

/* ── Navbar ──────────────────────────────────────────────────────────────── */
.navbar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2rem;
  height: 60px;
  background: rgba(8,9,13,.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-brand {
  display: flex; align-items: center; gap: .6rem;
  font-size: 1.25rem; font-weight: 700; letter-spacing: -.02em;
  text-decoration: none; color: var(--text);
}
.logo-icon { font-size: 1.4rem; }
.logo-text .accent { color: var(--accent-hi); }

.nav-status {
  display: flex; align-items: center; gap: .5rem;
  font-size: .78rem; color: var(--text-2);
}
.status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--text-3);
  transition: background var(--transition);
}
.status-dot.ok    { background: var(--green); box-shadow: 0 0 6px var(--green); }
.status-dot.warn  { background: var(--amber); }
.status-dot.error { background: var(--red); }

/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero {
  text-align: center;
  padding: 5rem 1.5rem 3.5rem;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(124,58,237,.18) 0%, transparent 70%);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1.15;
  margin-bottom: .75rem;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent-hi) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  color: var(--text-2);
  font-size: 1.05rem;
  margin-bottom: 2.5rem;
}

/* ── Search Box ──────────────────────────────────────────────────────────── */
.search-wrapper {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

.search-box {
  width: 100%;
  display: flex;
  align-items: center;
  gap: .75rem;
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-xl);
  padding: .75rem 1.25rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-lo), var(--shadow);
}

.search-icon { color: var(--text-3); flex-shrink: 0; }

#searchInput {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  font-family: var(--font);
  font-size: 1rem;
  color: var(--text);
  caret-color: var(--accent-hi);
}
#searchInput::placeholder { color: var(--text-3); }

.search-kbd {
  font-size: .7rem;
  color: var(--text-3);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 2px 6px;
  white-space: nowrap;
}

/* ── Mode Toggle ─────────────────────────────────────────────────────────── */
.mode-toggle {
  display: flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 3px;
  gap: 2px;
}

.mode-btn {
  padding: .4rem 1.1rem;
  border-radius: 99px;
  border: none;
  cursor: pointer;
  font-family: var(--font);
  font-size: .82rem;
  font-weight: 500;
  color: var(--text-2);
  background: none;
  transition: all var(--transition);
  white-space: nowrap;
}
.mode-btn.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px rgba(124,58,237,.4);
}
.mode-btn:not(.active):hover { color: var(--text); }

/* ── Quick chips ─────────────────────────────────────────────────────────── */
.quick-chips {
  display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem;
  max-width: 700px; margin: 0 auto;
  padding: 0 1.5rem;
}
.chip {
  padding: .3rem .9rem;
  border-radius: 99px;
  border: 1px solid var(--border);
  font-size: .78rem;
  color: var(--text-2);
  cursor: pointer;
  background: var(--surface);
  transition: all var(--transition);
}
.chip:hover {
  border-color: var(--accent);
  color: var(--accent-hi);
  background: var(--accent-lo);
}

/* ── Layout ──────────────────────────────────────────────────────────────── */
.main-content { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem 4rem; }

/* ── Results Grid ────────────────────────────────────────────────────────── */
#resultsSection { margin-top: 2rem; }

.results-meta {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1rem; color: var(--text-2); font-size: .85rem;
}
.results-meta strong { color: var(--text); }

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.result-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.result-card::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--accent);
  opacity: 0;
  transition: opacity var(--transition);
}
.result-card:hover {
  border-color: var(--border-hi);
  background: var(--card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.result-card:hover::before { opacity: 1; }

.rc-name { font-weight: 600; font-size: .98rem; margin-bottom: .35rem; }
.rc-comp { font-size: .78rem; color: var(--text-2); margin-bottom: .5rem; font-family: var(--mono); }
.rc-foot {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: .6rem;
}
.rc-mfr { font-size: .75rem; color: var(--text-3); }
.rc-score {
  font-size: .7rem; font-weight: 600;
  padding: 2px 8px; border-radius: 99px;
  background: var(--accent-lo); color: var(--accent-hi);
}

/* ── Category Badge ──────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  font-size: .68rem; font-weight: 600;
  padding: 2px 9px; border-radius: 99px;
  letter-spacing: .03em; text-transform: uppercase;
}
.badge-analgesic      { background: rgba(239,68,68,.12);  color: #f87171; }
.badge-antibiotic     { background: rgba(34,197,94,.12);  color: #4ade80; }
.badge-antidiabetic   { background: rgba(6,182,212,.12);  color: #22d3ee; }
.badge-antihypertensive { background: rgba(245,158,11,.12); color: #fbbf24; }
.badge-statin         { background: rgba(124,58,237,.12); color: #a78bfa; }
.badge-ppi            { background: rgba(236,72,153,.12); color: #f472b6; }
.badge-antihistamine  { background: rgba(16,185,129,.12); color: #34d399; }
.badge-anti-inflammatory { background: rgba(251,146,60,.12); color: #fb923c; }
.badge-bronchodilator { background: rgba(99,102,241,.12); color: #818cf8; }
.badge-vitamin        { background: rgba(250,204,21,.12); color: #facc15; }
.badge-thyroid        { background: rgba(20,184,166,.12); color: #2dd4bf; }
.badge-antidepressant { background: rgba(168,85,247,.12); color: #c084fc; }
.badge-default        { background: var(--accent-lo);     color: var(--accent-hi); }

/* ── Detail View ─────────────────────────────────────────────────────────── */
#detailSection { margin-top: 2rem; }

.detail-back {
  display: inline-flex; align-items: center; gap: .4rem;
  color: var(--text-2); font-size: .88rem;
  cursor: pointer; margin-bottom: 1.5rem;
  transition: color var(--transition);
}
.detail-back:hover { color: var(--text); }

.detail-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 860px) {
  .detail-layout { grid-template-columns: 1fr; }
}

/* ── Medicine Card ───────────────────────────────────────────────────────── */
.med-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.med-card-header {
  padding: 1.4rem 1.5rem 1rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, var(--accent-lo) 0%, transparent 60%);
}
.med-card-name {
  font-size: 1.45rem; font-weight: 700; letter-spacing: -.02em;
  margin-bottom: .5rem;
}
.med-card-body { padding: 1.25rem 1.5rem; }

.info-row {
  display: flex; gap: .5rem;
  padding: .55rem 0;
  border-bottom: 1px solid rgba(255,255,255,.04);
  font-size: .875rem;
}
.info-row:last-child { border-bottom: none; }
.info-label { color: var(--text-3); min-width: 110px; flex-shrink: 0; }
.info-value { color: var(--text); font-weight: 500; }
.info-value.mono { font-family: var(--mono); font-size: .82rem; }

.detail-panel {
  margin-top: 1rem;
  padding: 1.15rem 1.25rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.detail-panel-title {
  margin-bottom: .8rem;
  font-size: .84rem;
  font-weight: 650;
  color: var(--text);
}
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
}
.use-tag,
.side-effect-tag {
  display: inline-flex;
  align-items: center;
  padding: .3rem .65rem;
  border: 1px solid rgba(6,182,212,.25);
  border-radius: 99px;
  background: var(--cyan-lo);
  color: #67e8f9;
  font-size: .74rem;
  line-height: 1.35;
}
.side-effect-tag {
  border-color: rgba(245,158,11,.25);
  background: rgba(245,158,11,.09);
  color: #fbbf24;
}
.detail-empty {
  color: var(--text-3);
  font-size: .8rem;
}
.reviews {
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.review-meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: .3rem;
  color: var(--text-2);
  font-size: .76rem;
}
.review-meta strong {
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.review-track {
  height: 7px;
  overflow: hidden;
  border-radius: 99px;
  background: var(--surface);
}
.review-fill {
  display: block;
  height: 100%;
  min-width: 0;
  border-radius: inherit;
  transition: width .4s ease;
}
.review-excellent { background: var(--green); }
.review-average { background: var(--amber); }
.review-poor { background: var(--red); }

/* ── Side Panels ─────────────────────────────────────────────────────────── */
.side-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 1rem;
}
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: .9rem 1.25rem;
  border-bottom: 1px solid var(--border);
  font-size: .88rem; font-weight: 600;
}
.panel-header .panel-icon { font-size: 1rem; margin-right: .4rem; }
.panel-count {
  font-size: .72rem; padding: 2px 8px; border-radius: 99px;
  background: var(--surface); color: var(--text-2);
}
.panel-body { padding: .75rem; display: flex; flex-direction: column; gap: .5rem; }

.alt-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: .65rem .85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
}
.alt-item:hover {
  border-color: var(--border-hi);
  background: var(--card-hover);
}
.alt-name { font-size: .88rem; font-weight: 600; }
.alt-mfr  { font-size: .74rem; color: var(--text-3); }
.alt-arrow { color: var(--text-3); font-size: .8rem; }

.sem-item {
  display: flex; align-items: center; gap: .75rem;
  padding: .65rem .85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
}
.sem-item:hover { border-color: var(--cyan); background: var(--cyan-lo); }
.sem-score-bar {
  width: 38px; height: 38px; flex-shrink: 0;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: .7rem; font-weight: 700;
  background: conic-gradient(var(--cyan) calc(var(--pct)*1%), var(--surface) 0);
  position: relative;
}
.sem-score-bar::after {
  content: attr(data-score);
  position: absolute;
  font-size: .62rem;
  color: var(--text-2);
}
.sem-info { flex: 1; min-width: 0; }
.sem-name { font-size: .86rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sem-cat  { font-size: .72rem; color: var(--text-3); }

/* ── Empty / Loading states ──────────────────────────────────────────────── */
.empty-state {
  text-align: center; padding: 3rem 1rem; color: var(--text-3);
}
.empty-icon { font-size: 2.5rem; margin-bottom: .75rem; }
.empty-state p { font-size: .9rem; }

.skeleton {
  background: linear-gradient(90deg, var(--card) 25%, var(--card-hover) 50%, var(--card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.sk-card { height: 110px; border-radius: var(--radius); }

/* ── Index building banner ───────────────────────────────────────────────── */
.index-banner {
  display: flex; align-items: center; gap: .75rem;
  background: rgba(245,158,11,.08);
  border: 1px solid rgba(245,158,11,.25);
  border-radius: var(--radius-sm);
  padding: .75rem 1rem;
  font-size: .82rem; color: var(--amber);
  margin-bottom: 1rem;
}
.spin {
  display: inline-block;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Toast ───────────────────────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: .75rem 1.25rem;
  font-size: .85rem;
  box-shadow: var(--shadow);
  z-index: 999;
  animation: slideUp .25s ease;
}
@keyframes slideUp {
  from { transform: translateY(12px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

/* ── Utilities ───────────────────────────────────────────────────────────── */
.hidden { display: none !important; }
.flex-center { display: flex; align-items: center; justify-content: center; }