:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --border: #e3e8f0;
  --text: #1a2233;
  --muted: #6b7488;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-soft: #eef2ff;
  --danger: #dc2626;
  --danger-soft: #fef2f2;
  --success: #16a34a;
  --success-soft: #f0fdf4;
  --amber: #b45309;
  --amber-soft: #fffbeb;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.05), 0 1px 3px rgba(16, 24, 40, 0.08);
  --shadow-lg: 0 12px 32px rgba(16, 24, 40, 0.14);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 1rem; color: var(--text); }

/* ── Layout ─────────────────────────────────────────────── */
.wrap { max-width: 860px; margin: 0 auto; padding: 20px 16px 64px; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand { font-weight: 700; font-size: 1.15rem; letter-spacing: -0.02em; }
.brand .accent { color: var(--primary); }
.nav { display: flex; gap: 4px; margin-left: 8px; }
.nav button {
  background: none;
  border: none;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.95rem;
}
.nav button.active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.nav button:hover { background: var(--border); color: var(--text); }
.spacer { flex: 1; }
.user-menu { position: relative; }
.user-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  background: none;
  border: none;
  padding: 4px 8px 4px 4px;
  border-radius: 10px;
  cursor: pointer;
  color: inherit;
  text-align: left;
}
.user-chip:hover { background: var(--border); }
.user-chip img { width: 34px; height: 34px; border-radius: 50%; background: var(--border); }
.user-chip .avatar-fallback {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--primary-soft); color: var(--primary);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.95rem; flex-shrink: 0;
}
.user-chip .uname { font-weight: 600; font-size: 0.9rem; }
.user-chip .ucountry { font-size: 0.78rem; color: var(--muted); }
.user-chip .caret { margin-left: 2px; color: var(--muted); font-size: 0.8rem; }
.menu-popover {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 160px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow-lg);
  padding: 6px;
  z-index: 20;
}
.menu-popover button {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  border-radius: 8px;
  padding: 9px 12px;
  color: var(--text);
  font-size: 0.9rem;
}
.menu-popover button:hover { background: var(--border); }
.menu-popover button.danger { color: var(--danger); }
.menu-popover button.danger:hover { background: var(--danger-soft); }
.menu-header {
  padding: 8px 12px 10px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 6px;
}
.menu-header .menu-name { font-weight: 600; font-size: 0.9rem; margin-bottom: 6px; }
.menu-header .menu-badges { display: flex; flex-wrap: wrap; gap: 5px; }
.menu-lang {
  padding: 8px 12px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 6px 0;
}
.menu-lang .menu-lang-label { font-size: 0.78rem; color: var(--muted); margin-bottom: 6px; }
.menu-lang .menu-lang-btns { display: flex; gap: 5px; flex-wrap: wrap; }
.menu-lang .menu-lang-btns button {
  display: inline-block;
  width: auto;
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--muted);
}
.menu-lang .menu-lang-btns button:hover { background: var(--border); color: var(--text); }
.menu-lang .menu-lang-btns button.active { background: var(--primary-soft); color: var(--primary); border-color: var(--primary); font-weight: 600; }
.icon-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 7px 12px;
  color: var(--muted);
  font-size: 0.88rem;
}
.icon-btn:hover { background: var(--danger-soft); color: var(--danger); border-color: var(--danger); }

/* ── Cards ─────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}
.card + .card { margin-top: 14px; }
.card.clickable { cursor: pointer; transition: box-shadow .15s ease, transform .15s ease; }
.card.clickable:hover { box-shadow: var(--shadow-lg); transform: translateY(-1px); }

.page-title { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 4px; }
.page-sub { color: var(--muted); margin: 0 0 20px; }

/* ── Auth screen ───────────────────────────────────────── */
.auth-hero { text-align: center; padding: 56px 16px 40px; }
.auth-logo {
  width: 56px; height: 56px; border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), #7c3aed);
  color: #fff; font-size: 1.6rem; font-weight: 800;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-lg);
}
.auth-hero h1 { font-size: 1.7rem; margin: 18px 0 6px; letter-spacing: -0.02em; }
.auth-hero p { color: var(--muted); max-width: 460px; margin: 0 auto 24px; }
.auth-card { max-width: 420px; margin: 0 auto; text-align: left; }
#gsi-btn { display: flex; justify-content: center; margin: 8px 0 4px; min-height: 44px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 6px; }
.form-group .hint { font-size: 0.82rem; color: var(--muted); margin-top: 6px; }
input[type="text"], input[type="email"], input[type="password"], select, textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  background: #fff;
  outline: none;
  transition: border-color .12s ease, box-shadow .12s ease;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

/* ── Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 11px 18px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: background .12s ease;
}
.btn:hover { background: var(--primary-hover); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn.block { width: 100%; }
.btn.secondary { background: var(--surface); color: var(--text); border: 1px solid var(--border); }
.btn.secondary:hover { background: var(--bg); }
.btn.danger { background: var(--danger); }
.btn.sm { padding: 7px 12px; font-size: 0.85rem; border-radius: 8px; }
.btn.ghost { background: transparent; color: var(--primary); border: 1px solid transparent; }
.btn.ghost:hover { background: var(--primary-soft); }

/* ── Badges ────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.02em;
  padding: 3px 9px; border-radius: 999px;
}
.badge.hk { background: var(--amber-soft); color: var(--amber); }
.badge.plain { background: var(--primary-soft); color: var(--primary); }
.badge.voted { background: var(--success-soft); color: var(--success); }
.badge.verified { background: var(--success-soft); color: var(--success); }
.badge.private { background: var(--danger-soft); color: var(--danger); }
.badge.country { background: var(--amber-soft); color: var(--amber); }

/* ── Vote list ─────────────────────────────────────────── */
.browse-controls { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.browse-controls .search { flex: 1 1 200px; }
.browse-controls select { width: auto; flex: 0 0 auto; }

.schedule-row { display: flex; flex-wrap: wrap; gap: 12px; }
.schedule-row > div { flex: 1 1 180px; }

.qr-card { text-align: center; }
.qr-card .qr-title { margin: 0 0 4px; font-size: 1rem; }
.qr-box { display: flex; justify-content: center; margin-top: 12px; }
.qr-box img { width: 180px; height: 180px; image-rendering: pixelated; }

.vote-card { display: flex; flex-direction: column; gap: 10px; }
.vote-card .top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.vote-card h3 { margin: 0; font-size: 1.08rem; letter-spacing: -0.01em; }
.vote-card .meta { color: var(--muted); font-size: 0.83rem; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.vote-card .desc { color: var(--muted); font-size: 0.92rem; margin: 0; }

.creator-line { color: var(--muted); font-size: 0.78rem; font-style: italic; margin: 0; }
.desc-bordered {
  color: var(--muted); font-size: 0.92rem; margin: 0;
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px;
}
.timing-line { color: var(--muted); font-size: 0.85rem; margin: 0; }

/* ── Options ───────────────────────────────────────────── */
.option-btn {
  display: flex; align-items: center; gap: 12px;
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 13px 16px;
  margin-bottom: 10px;
  text-align: left;
  font-size: 0.98rem;
  transition: border-color .12s ease, background .12s ease;
}
.option-btn:hover { border-color: var(--primary); background: var(--primary-soft); }
.option-btn .radio {
  width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid var(--border); flex-shrink: 0;
}
.option-btn.selected .radio { border-color: var(--primary); box-shadow: inset 0 0 0 4px var(--primary); }

/* ── Results ───────────────────────────────────────────── */
.result-row { margin-bottom: 14px; }
.result-row .rl { display: flex; justify-content: space-between; font-size: 0.92rem; margin-bottom: 5px; }
.result-row .rl .pct { font-weight: 700; }
.bar { height: 10px; background: var(--border); border-radius: 999px; overflow: hidden; }
.bar > span { display: block; height: 100%; background: linear-gradient(90deg, var(--primary), #7c3aed); border-radius: 999px; transition: width .5s ease; }
.result-row.own .rl { color: var(--primary); font-weight: 600; }

/* ── Notice / error ────────────────────────────────────── */
.notice { padding: 12px 14px; border-radius: 10px; margin-bottom: 16px; font-size: 0.9rem; }
.notice.error { background: var(--danger-soft); color: var(--danger); border: 1px solid #fecaca; }
.notice.success { background: var(--success-soft); color: var(--success); border: 1px solid #bbf7d0; }
.notice.info { background: var(--primary-soft); color: var(--primary); border: 1px solid #c7d2fe; }

/* ── Options editor ────────────────────────────────────── */
.option-editor { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; padding: 10px; border: 1px solid var(--border); border-radius: 10px; }
.option-editor-top { display: flex; gap: 8px; align-items: center; }
.option-editor input { flex: 1; }
.option-editor .rm { background: none; border: none; color: var(--danger); font-size: 1.2rem; padding: 0 6px; }
.option-editor .option-photos { margin-left: 2px; }

/* ── Photos ────────────────────────────────────────────── */
.photo-grid { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.photo-thumb { position: relative; display: inline-block; }
.photo-thumb img { width: 88px; height: 88px; object-fit: cover; border-radius: 8px; border: 1px solid var(--border); display: block; cursor: pointer; }
.photo-thumb .photo-rm {
  position: absolute; top: -6px; right: -6px;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--danger); color: #fff; border: none;
  font-size: 0.75rem; line-height: 1; cursor: pointer;
}
.option-item { margin-bottom: 10px; }
.option-item .photo-grid { padding-left: 34px; margin-top: 4px; }

.lightbox {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0, 0, 0, 0.9);
  display: flex; align-items: center; justify-content: center;
  padding: 16px; cursor: pointer;
}
.lightbox img { max-width: 100%; max-height: 100%; border-radius: 8px; }

.center { text-align: center; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.mt { margin-top: 16px; }
.spinner {
  width: 22px; height: 22px; border: 3px solid var(--border);
  border-top-color: var(--primary); border-radius: 50%;
  animation: spin .7s linear infinite; margin: 40px auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

.empty { text-align: center; color: var(--muted); padding: 40px 16px; }
.empty .big { font-size: 2rem; margin-bottom: 8px; }

/* ── Modal (passkey prompt) ───────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(16, 24, 40, 0.45);
  display: flex; align-items: center; justify-content: center;
  z-index: 100; padding: 16px;
}
.modal { max-width: 400px; width: 100%; box-shadow: var(--shadow-lg); }

@media (max-width: 560px) {
  .nav button { padding: 8px 9px; font-size: 0.88rem; }
  .user-chip .uname, .user-chip .ucountry { display: none; }
}

/* ── Story list ─────────────────────────────────────────── */
.keywords-line { color: var(--muted); font-size: 0.82rem; margin: 0; }
.browse-controls .author { flex: 1 1 160px; }

/* ── Reading mode toggle ────────────────────────────────── */
.mode-toggle {
  display: inline-flex;
  gap: 4px;
  background: var(--border);
  border-radius: 10px;
  padding: 4px;
  margin: 14px 0;
}
.mode-toggle button {
  background: none;
  border: none;
  padding: 7px 16px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
}
.mode-toggle button.active { background: var(--surface); color: var(--primary); box-shadow: var(--shadow); }

/* ── Article mode ───────────────────────────────────────── */
.article { padding: 20px; }
.node-click-hint { color: var(--muted); font-size: 0.82rem; margin: 0 0 14px; }
.passage-wrap { margin-bottom: 16px; }
.passage {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  cursor: pointer;
  transition: border-color .12s ease, box-shadow .12s ease;
  overflow: hidden;
}
.passage:hover { border-color: var(--primary); }
.passage.selected { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.passage-text { padding: 16px 18px; font-size: 1.02rem; line-height: 1.7; white-space: pre-wrap; }
.passage-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 8px 16px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.node-meta { color: var(--muted); font-size: 0.8rem; }
.like-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: none; border: 1px solid var(--border); border-radius: 999px;
  padding: 4px 12px; font-size: 0.85rem; color: var(--muted);
}
.like-btn:hover { border-color: var(--danger); color: var(--danger); }
.like-btn.liked { border-color: var(--danger); color: var(--danger); background: var(--danger-soft); }
.like-btn .heart { color: var(--danger); font-size: 1rem; line-height: 1; }
.node-actions { display: flex; gap: 8px; padding: 10px 16px; border-top: 1px solid var(--border); flex-wrap: wrap; }
.alternatives { padding: 8px 16px 12px; display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.alt-label { color: var(--muted); font-size: 0.8rem; }
.alt-chip {
  background: var(--primary-soft); color: var(--primary); border: 1px solid #c7d2fe;
  border-radius: 999px; padding: 3px 10px; font-size: 0.8rem; cursor: pointer;
}
.alt-chip:hover { background: #e0e7ff; }

/* ── Tree mode ──────────────────────────────────────────── */
.tree { margin-top: 4px; }
.tree-level { margin-bottom: 18px; }
.tree-level-label {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 8px;
}
.tree-row {
  display: flex; flex-direction: row; flex-wrap: wrap;
  gap: 10px; align-items: stretch;
}
.tree-node {
  flex: 1 1 260px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  cursor: pointer;
  transition: border-color .12s ease, box-shadow .12s ease;
  display: flex; flex-direction: column;
}
.tree-node:hover { border-color: var(--primary); }
.tree-node.selected { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.tree-node-text {
  padding: 12px 14px; font-size: 0.94rem; line-height: 1.55;
  white-space: pre-wrap; max-height: 160px; overflow: hidden;
  position: relative;
}
.tree-node-text::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 28px;
  background: linear-gradient(transparent, var(--surface));
}
.tree-node-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 8px 14px; border-top: 1px solid var(--border); background: var(--bg);
  flex-wrap: wrap; margin-top: auto;
}

/* ── Compose modal context ──────────────────────────────── */
.node-context {
  border: 1px solid var(--border); border-left: 3px solid var(--primary);
  border-radius: 8px; padding: 10px 12px; margin-bottom: 14px;
  color: var(--muted); font-size: 0.9rem; max-height: 140px; overflow: auto;
  white-space: pre-wrap;
}