/* ============================================
   MetaMachine Forum — dark theme
   Matches aumatron.com/metamachine.tools aesthetic
   ============================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #00D9FF;
  --primary-dark: #00B8D9;
  --accent: #00FFD1;
  --danger: #FF4757;
  --warn: #FFA502;
  --text-primary: #FFFFFF;
  --text-secondary: #B0BEC5;
  --text-muted: #7A8B99;
  --bg-dark: #0A0E27;
  --bg-darker: #050814;
  --bg-card: #111827;
  --bg-elevated: #1a2338;
  --border: rgba(0, 217, 255, 0.12);
  --border-strong: rgba(0, 217, 255, 0.28);
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 8px;
}

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

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--accent); }

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============================================
   HEADER
   ============================================ */
.forum-header {
  background: rgba(10, 14, 39, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px 20px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}
.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  color: #000;
}
.brand-tag { color: var(--text-muted); font-size: 12px; font-weight: 400; }

.header-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.header-nav a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
}
.header-nav a.active { color: var(--primary); }
.header-nav > span#auth-nav {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding-left: 14px;
  border-left: 1px solid var(--border);
}
.header-nav .nav-profile {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 160px;
}
.header-nav .nav-profile span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Mobile: stack brand on top, nav below, with auth wrapping to its own row */
@media (max-width: 720px) {
  .header-inner { flex-direction: column; align-items: flex-start; gap: 10px; }
  .header-nav { width: 100%; justify-content: flex-start; gap: 14px; font-size: 13px; }
  .header-nav > span#auth-nav {
    width: 100%;
    padding-left: 0;
    padding-top: 8px;
    border-left: none;
    border-top: 1px solid var(--border);
    justify-content: space-between;
  }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  font-family: inherit;
  transition: all 0.2s ease;
  text-align: center;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #000;
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(0, 217, 255, 0.3); }
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover { color: var(--primary); border-color: var(--primary); }
.btn-danger {
  background: rgba(255, 71, 87, 0.1);
  color: var(--danger);
  border: 1px solid var(--danger);
}
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn[disabled] { opacity: 0.5; cursor: not-allowed; }

/* ============================================
   MAIN LAYOUT
   ============================================ */
main { padding: 32px 0 80px; }

.page-heading {
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.page-heading h1 {
  font-size: 28px;
  font-weight: 700;
}
.page-heading .muted {
  color: var(--text-muted);
  font-size: 14px;
}

.breadcrumbs {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.breadcrumbs a { color: var(--text-secondary); }

/* ============================================
   CATEGORY / TOPIC LIST
   ============================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 12px;
  transition: all 0.15s ease;
}
.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.category-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.category-card .cat-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(0, 217, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.category-card .cat-body { flex: 1; }
.category-card .cat-body h3 {
  font-size: 16px;
  margin-bottom: 4px;
}
.category-card .cat-body p {
  font-size: 13px;
  color: var(--text-muted);
}
.category-card .cat-count {
  color: var(--text-muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.topic-row {
  display: flex;
  align-items: center;
  gap: 14px;
}
.topic-row .tr-body { flex: 1; min-width: 0; }
.topic-row .tr-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.topic-row .tr-title:hover { color: var(--primary); }
.topic-row .tr-meta {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.topic-row .tr-meta .pill {
  background: rgba(0, 217, 255, 0.08);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
}
.topic-row .tr-stats {
  display: flex;
  gap: 18px;
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
}
.topic-row .tr-stats .stat-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.topic-row .tr-stats .stat-value {
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* ============================================
   TOPIC VIEW
   ============================================ */
.topic-view .post {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 16px;
  display: flex;
  gap: 16px;
}
.topic-view .post.op { border-color: var(--border-strong); }

.vote-column {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-width: 32px;
}
.vote-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 18px;
  padding: 4px;
  border-radius: 4px;
  transition: all 0.15s ease;
}
.vote-btn:hover { color: var(--primary); background: rgba(0, 217, 255, 0.1); }
.vote-btn.active { color: var(--accent); }
.vote-btn.active.down { color: var(--danger); }
.vote-score {
  font-size: 14px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-secondary);
  min-width: 24px;
  text-align: center;
}

.post-body { flex: 1; min-width: 0; }
.post-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.post-header .author-name {
  color: var(--text-secondary);
  font-weight: 600;
}
.post-header .author-badge {
  background: var(--primary);
  color: #000;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 6px;
  font-weight: 700;
  text-transform: uppercase;
}
.post-header .author-badge.admin { background: var(--accent); }
.post-header .author-badge.bot {
  background: linear-gradient(135deg, var(--primary), var(--accent));
}

.post-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}

.post-content {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.post-content code {
  background: var(--bg-darker);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 13px;
  color: var(--accent);
}

.post-actions {
  margin-top: 14px;
  display: flex;
  gap: 12px;
  font-size: 13px;
}
.post-actions button {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  padding: 2px 4px;
}
.post-actions button:hover { color: var(--primary); }

/* ============================================
   FORMS
   ============================================ */
.form-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  max-width: 600px;
  margin: 0 auto;
}

.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-darker);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  transition: border-color 0.15s ease;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}
.form-group textarea { resize: vertical; min-height: 180px; }

.hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
}

.form-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 20px;
}

/* ============================================
   ALERTS
   ============================================ */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 14px;
}
.alert-info {
  background: rgba(0, 217, 255, 0.08);
  border: 1px solid var(--border-strong);
  color: var(--text-secondary);
}
.alert-success {
  background: rgba(0, 255, 209, 0.08);
  border: 1px solid rgba(0, 255, 209, 0.3);
  color: var(--accent);
}
.alert-warn {
  background: rgba(255, 165, 2, 0.08);
  border: 1px solid rgba(255, 165, 2, 0.3);
  color: var(--warn);
}
.alert-danger {
  background: rgba(255, 71, 87, 0.08);
  border: 1px solid rgba(255, 71, 87, 0.3);
  color: var(--danger);
}

/* ============================================
   EMPTY STATE
   ============================================ */
.empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.empty h3 {
  color: var(--text-secondary);
  font-size: 18px;
  margin-bottom: 8px;
}

/* ============================================
   AVATAR
   ============================================ */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  color: #fff;
  font-weight: 700;
  vertical-align: middle;
}

img.avatar {
  border: 1px solid var(--border);
}

/* Profile page avatar (large) */
.profile-avatar-wrap {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 20px;
}
.profile-avatar-wrap .avatar {
  width: 84px;
  height: 84px;
  font-size: 30px;
}
.profile-avatar-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* Post header avatar */
.post-header .avatar {
  margin-right: 4px;
}

/* ============================================
   FOOTER
   ============================================ */
.forum-footer {
  border-top: 1px solid var(--border);
  padding: 30px 0;
  color: var(--text-muted);
  font-size: 13px;
  text-align: center;
}
.forum-footer a { color: var(--text-secondary); margin: 0 10px; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 640px) {
  .topic-row .tr-stats { gap: 10px; }
  .topic-row .tr-stats .replies-stat { display: none; }
  .page-heading h1 { font-size: 22px; }
  .header-nav { gap: 12px; font-size: 13px; }
  .post-title { font-size: 18px; }
  .topic-view .post { padding: 16px; gap: 10px; }
}