/* Colors: change these to restyle the site */
:root {
  --brand: #4b2e83;
  --brand-ink: #ffffff;
  --accent: #c9a227;
  --bg: #f5f4f8;
  --surface: #ffffff;
  --text: #1c1a22;
  --muted: #625d6e;
  --border: #e3e0ea;
  --good: #1d8a4f;
  --good-bg: #e3f5ea;
  --mid: #9a6a00;
  --mid-bg: #fdf1d3;
  --bad: #c23b3b;
  --bad-bg: #fbe5e5;
  --none-bg: #ecebf0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #8f6fd6;
    --bg: #131118;
    --surface: #1d1a24;
    --text: #ebe9f0;
    --muted: #a59fb3;
    --border: #322d3d;
    --good: #5fd08f;
    --good-bg: #173326;
    --mid: #f0c25a;
    --mid-bg: #3a2f12;
    --bad: #f08080;
    --bad-bg: #3d1c1c;
    --none-bg: #2a2632;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--brand); }
h1, h2, h3 { line-height: 1.2; }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
.view { padding-top: 20px; padding-bottom: 60px; }
.center { min-height: 100vh; display: grid; place-items: center; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.error { color: var(--bad); margin: 8px 0; }
.empty { text-align: center; padding: 40px 0; }
.page-title { margin: 8px 0 16px; font-size: 1.6rem; }
.back { display: inline-block; margin-bottom: 8px; text-decoration: none; font-size: 0.95rem; }

/* Top bar */
.topbar { background: var(--brand); color: var(--brand-ink); border-bottom: 3px solid var(--accent); position: sticky; top: 0; z-index: 10; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 56px; }
.brand { color: var(--brand-ink); text-decoration: none; font-weight: 700; font-size: 1.05rem; white-space: nowrap; }
.topbar nav { display: flex; align-items: center; gap: 14px; }
.topbar nav a:not(.btn), .topbar nav .link { color: var(--brand-ink); opacity: 0.9; font-size: 0.9rem; }
.topbar .btn { background: var(--accent); color: #1c1a22; }
@media (max-width: 420px) {
  .topbar nav { gap: 10px; }
  .topbar nav a:not(.btn), .topbar nav .link { font-size: 0.82rem; }
  .topbar .btn-small { padding: 6px 10px; font-size: 0.82rem; }
}

/* Buttons */
.btn {
  display: inline-block; font: inherit; font-weight: 600; text-align: center; text-decoration: none;
  padding: 12px 18px; border-radius: 10px; border: none; cursor: pointer;
  background: var(--brand); color: var(--brand-ink);
}
.btn:disabled { opacity: 0.6; cursor: default; }
.btn-small { padding: 7px 12px; font-size: 0.9rem; }
.btn-block { display: block; width: 100%; margin: 16px 0; }
.btn.danger { background: var(--bad); color: #fff; }
.link { font: inherit; background: none; border: none; padding: 0; cursor: pointer; color: var(--brand); text-decoration: underline; }
.link.muted { color: var(--muted); }
.danger-text { color: var(--bad); }

/* Cards */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 16px; }
.list, .reviews { display: grid; gap: 10px; }

/* Login */
.login { width: 100%; max-width: 380px; display: grid; gap: 4px; }
.login h1 { margin: 0 0 4px; font-size: 1.5rem; }
.login .btn { margin-top: 8px; }

/* Form controls */
input[type="search"], input[type="password"], input:not([type]), select, textarea {
  width: 100%; font: inherit; font-size: 16px; /* 16px stops iOS zooming in */
  padding: 11px 12px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text);
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--brand); outline-offset: 1px; }

/* Browse */
.toolbar { display: grid; grid-template-columns: 1fr auto; gap: 8px; margin-bottom: 16px; }
.toolbar select { width: auto; }
@media (max-width: 480px) {
  .toolbar { grid-template-columns: 1fr; }
  .toolbar select { width: 100%; }
}
.prof-card { display: flex; gap: 14px; align-items: center; color: inherit; text-decoration: none; }
.prof-card:hover { border-color: var(--brand); }
.prof-card h3 { margin: 0; font-size: 1.05rem; }
.prof-card p { margin: 2px 0 0; }
.prof-info { min-width: 0; }
.stats { font-size: 0.88rem; color: var(--muted); }

/* Rating badges */
.badge {
  flex: none; width: 56px; height: 56px; border-radius: 12px;
  display: grid; place-items: center; font-weight: 800; font-size: 1.3rem;
  background: var(--none-bg); color: var(--muted);
}
.badge.big { width: 80px; height: 80px; font-size: 2rem; border-radius: 16px; }
.badge.good, .score.good { background: var(--good-bg); color: var(--good); }
.badge.mid, .score.mid { background: var(--mid-bg); color: var(--mid); }
.badge.bad, .score.bad { background: var(--bad-bg); color: var(--bad); }

/* Professor page */
.prof-header { display: flex; gap: 16px; align-items: center; margin: 8px 0 16px; }
.prof-header h1 { margin: 0; font-size: 1.6rem; }
.prof-header p { margin: 2px 0 0; }
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 12px; }
@media (max-width: 560px) { .stat-row { grid-template-columns: repeat(2, 1fr); } }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 12px; text-align: center; }
.stat strong { display: block; font-size: 1.3rem; }
.stat span { font-size: 0.8rem; color: var(--muted); }

.tags { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0; }
.tag { font-size: 0.8rem; padding: 3px 10px; border-radius: 999px; background: var(--none-bg); color: var(--text); }

.chips { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; margin-bottom: 12px; }
.chip {
  flex: none; font: inherit; font-size: 0.88rem; padding: 6px 14px; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
}
.chip[aria-pressed="true"] { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }

/* Review cards */
.review-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; }
.scores { display: flex; gap: 6px; }
.score { font-size: 0.85rem; padding: 4px 10px; border-radius: 8px; }
.score b { font-size: 1rem; }
.score.neutral { background: var(--none-bg); color: var(--text); }
.review-meta { margin: 10px 0 4px; font-size: 0.92rem; }
.review-facts { margin: 0 0 4px; font-size: 0.88rem; color: var(--muted); }
.review-body { margin: 8px 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.guidelines p { margin: 0 0 4px; }
.other-tag { margin-top: 10px; }
.review-actions { display: flex; gap: 16px; align-items: center; font-size: 0.88rem; }

/* Review form */
.review-form { display: grid; gap: 4px; }
.guidelines { background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 10px; padding: 12px 14px; font-size: 0.92rem; margin-bottom: 8px; }
.guidelines ul { margin: 6px 0 0; padding-left: 20px; }
.field { margin: 10px 0; border: none; padding: 0; min-width: 0; }
.field > label, .field > legend { display: block; font-weight: 600; margin-bottom: 6px; padding: 0; }
.hint { margin: 4px 0 0; font-size: 0.85rem; color: var(--muted); }
.subfields { border-left: 3px solid var(--border); padding-left: 12px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

.segmented { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.segmented.two { grid-template-columns: 1fr 1fr; }
.segmented label { position: relative; }
.segmented input { position: absolute; opacity: 0; inset: 0; margin: 0; }
.segmented span {
  display: block; text-align: center; padding: 12px 0; border-radius: 10px; cursor: pointer; font-weight: 600;
  border: 1px solid var(--border); background: var(--surface);
}
.segmented input:checked + span { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.segmented input:focus-visible + span { outline: 2px solid var(--brand); outline-offset: 2px; }

.tag-picker { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-option { position: relative; }
.tag-option input { position: absolute; opacity: 0; inset: 0; margin: 0; }
.tag-option span {
  display: inline-block; padding: 7px 12px; border-radius: 999px; font-size: 0.88rem; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface);
}
.tag-option input:checked + span { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.tag-option input:disabled + span { opacity: 0.4; cursor: default; }
.tag-option input:focus-visible + span { outline: 2px solid var(--brand); outline-offset: 2px; }

/* Admin */
.admin-section { margin: 24px 0; }
.admin-section h2 { font-size: 1.15rem; }
.admin-section .review { margin-bottom: 10px; }
.admin-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.admin-row:last-child { border-bottom: none; }
.password-form { margin-bottom: 12px; }
.password-form h3 { margin: 0 0 2px; font-size: 1rem; }
.password-form p { margin: 0; }