:root {
  --teal-600: #0f766e;
  --teal-500: #14b8a6;
  --teal-50: #f0fdfa;
  --blue-600: #2563eb;
  --blue-50: #eff6ff;
  --ink: #0f172a;
  --ink-soft: #475569;
  --ink-faint: #64748b;
  --line: #e2e8f0;
  --bg: #f8fafc;
  --card: #ffffff;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.08);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
}

a { color: var(--teal-600); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Top bar */
.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 56px;
}
.brand {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  display: inline-flex;
  align-items: baseline;
  gap: 1px;
}
.brand-mark { color: var(--teal-600); }
.brand-noc { color: var(--ink); }
.brand-forum {
  margin-left: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--blue-600);
  background: var(--blue-50);
  border: 1px solid #dbeafe;
  border-radius: 999px;
  padding: 1px 9px;
}
.nav { display: flex; gap: 14px; flex: 1; }
.nav a { color: var(--ink-soft); font-weight: 500; font-size: 0.95rem; }
.nav a:hover { color: var(--teal-600); text-decoration: none; }
.userbox {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--ink-soft);
  white-space: nowrap;
}
.userbox .who { font-weight: 600; color: var(--ink); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--teal-600);
  color: #fff;
  transition: background 0.12s ease, border-color 0.12s ease;
}
.btn:hover { background: #0b5f59; }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }
.btn.secondary {
  background: var(--card);
  color: var(--ink);
  border-color: var(--line);
}
.btn.secondary:hover { background: #f1f5f9; }
.btn.ghost {
  background: transparent;
  color: var(--ink-soft);
  border-color: transparent;
}
.btn.ghost:hover { background: #f1f5f9; }
.btn.small { padding: 5px 10px; font-size: 0.82rem; }

/* Cards */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 16px;
}

/* Typography */
h1, h2, h3 { margin: 0 0 8px; line-height: 1.25; }
h1 { font-size: 1.5rem; }
h2 { font-size: 1.2rem; }
p { margin: 0 0 12px; }
.muted { color: var(--ink-faint); font-size: 0.85rem; }
.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.thread-title { font-size: 1.25rem; font-weight: 700; }
.body-text { white-space: pre-wrap; overflow-wrap: anywhere; }

/* Status badges */
.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 9px;
  border-radius: 999px;
  letter-spacing: 0.01em;
  text-transform: lowercase;
}
.badge.open, .badge.proposed { background: var(--blue-50); color: var(--blue-600); }
.badge.triaged, .badge.planned { background: #fffbeb; color: #b45309; }
.badge.fixed, .badge.done { background: #f0fdf4; color: #15803d; }
.badge.closed { background: #f1f5f9; color: var(--ink-faint); }
.badge.bugs { background: #fef2f2; color: #b91c1c; }
.badge.feature-requests { background: var(--blue-50); color: var(--blue-600); }
.badge.general { background: #f8fafc; color: var(--ink-faint); }
/* Product badges — Desktop is visually distinct (violet) from Appliance (teal). */
.badge.product-appliance { background: var(--teal-50); color: var(--teal-600); }
.badge.product-desktop { background: #f5f3ff; color: #6d28d9; border: 1px solid #ddd6fe; }

/* Forms */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 5px; color: var(--ink-soft); }
.field input, .field select, .field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 11px;
  font: inherit;
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--card);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 2px solid var(--teal-500);
  outline-offset: -1px;
  border-color: var(--teal-500);
}
.field textarea { min-height: 140px; resize: vertical; }
.field .hint { font-size: 0.78rem; color: var(--ink-faint); margin-top: 4px; }

/* Thread list */
.thread-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
}
.thread-row:last-child { border-bottom: 0; }
/* Desktop threads get a violet accent so they read as a different product. */
.thread-row.row-desktop { border-left: 3px solid #c4b5fd; padding-left: 12px; }
.thread-row .meta {
  flex: 1;
  min-width: 0;
}
.thread-row .title { font-weight: 600; color: var(--ink); }
.thread-row .title:hover { color: var(--teal-600); text-decoration: none; }
.thread-row .sub { font-size: 0.8rem; color: var(--ink-faint); margin-top: 2px; }
.thread-row .stats {
  display: flex;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--ink-soft);
  white-space: nowrap;
}
.stat { display: inline-flex; align-items: center; gap: 3px; }

/* Vote button */
.vote-btn {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 8px;
  cursor: pointer;
  padding: 6px 10px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.vote-btn:hover { border-color: var(--teal-500); color: var(--teal-600); }
.vote-btn.on { background: var(--teal-50); border-color: var(--teal-500); color: var(--teal-600); }

/* Replies */
.reply { padding: 14px 0; border-bottom: 1px solid var(--line); }
.reply:last-child { border-bottom: 0; }
.reply .head { font-size: 0.82rem; color: var(--ink-faint); margin-bottom: 4px; }
.reply .head strong { color: var(--ink); }

/* Auth */
.auth-tabs { display: flex; gap: 8px; margin-bottom: 16px; }
.auth-tabs button {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 8px;
  padding: 7px 13px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--ink-soft);
}
.auth-tabs button.active { background: var(--teal-600); color: #fff; border-color: var(--teal-600); }

/* Misc */
.home-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
.stat-card .num { font-size: 1.6rem; font-weight: 800; color: var(--teal-600); }
.stat-card .lbl { font-size: 0.8rem; color: var(--ink-faint); }

.category-pill { display: inline-flex; align-items: center; gap: 8px; }
.filter-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.filter-bar.product-filter { align-items: center; }
.filter-label { font-size: 0.78rem; color: var(--ink-faint); font-weight: 600; }
.chip {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 0.8rem;
  cursor: pointer;
  color: var(--ink-soft);
}
.chip.active { background: var(--teal-600); color: #fff; border-color: var(--teal-600); }

.success-note { color: #15803d; font-size: 0.85rem; font-weight: 600; }
.warn-note { color: #b45309; font-size: 0.85rem; font-weight: 600; }

.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 0.88rem;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  z-index: 100;
  max-width: 90vw;
}

.footer {
  margin-top: 40px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: 0.82rem;
  text-align: center;
}

.loading { color: var(--ink-faint); text-align: center; padding: 40px 0; }
.error-box {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #b91c1c;
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 0.88rem;
  margin-bottom: 14px;
}

@media (max-width: 560px) {
  .topbar-inner { gap: 12px; }
  .nav { gap: 10px; }
  .thread-row { flex-wrap: wrap; }
}