/* =============================================
   ARENA FORUM — PURPLE THEME v2.0
   ============================================= */

:root {
  --bg-base:     #0a0a0f;
  --bg-card:     #0f0f1a;
  --bg-elevated: #161625;
  --bg-hover:    #1c1c30;
  --accent:      #8b5cf6;
  --accent-2:    #a78bfa;
  --accent-dim:  #5b3fa8;
  --accent-glow: rgba(139,92,246,0.15);
  --accent-glow2:rgba(139,92,246,0.08);
  --red:         #ef4444;
  --green:       #22c55e;
  --blue:        #3b82f6;
  --gold:        #f59e0b;
  --text-1:      #f1f0ff;
  --text-2:      #9d9bb8;
  --text-3:      #4a4860;
  --border:      rgba(139,92,246,0.2);
  --border-soft: rgba(255,255,255,0.06);
  --radius:      10px;
  --radius-lg:   16px;
  --font:        'Inter', 'Segoe UI', system-ui, sans-serif;
  --shadow:      0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg:   0 8px 48px rgba(0,0,0,0.6);
  --glow-purple: 0 0 40px rgba(139,92,246,0.2);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg-base);
  color: var(--text-1);
  line-height: 1.6;
  min-height: 100vh;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(139,92,246,0.12) 0%, transparent 60%);
}

a { color: var(--accent-2); text-decoration: none; transition: color 0.15s; }
a:hover { color: #c4b5fd; }
.hidden { display: none !important; }
.muted  { color: var(--text-2); font-size: 0.875rem; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===================== NAVBAR ===================== */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(139,92,246,0.1);
}

.nav-inner {
  display: flex; align-items: center; gap: 2rem; height: 64px;
}

.logo {
  display: flex; align-items: center; gap: 0.6rem;
  font-size: 1.2rem; font-weight: 800;
  color: var(--text-1); letter-spacing: 0.02em;
  text-transform: uppercase;
}
.logo-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  box-shadow: 0 0 16px rgba(139,92,246,0.4);
}
.logo-accent { 
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.nav-links { display: flex; gap: 0.25rem; flex: 1; }

.nav-link {
  color: var(--text-2); font-size: 0.875rem; font-weight: 500;
  padding: 0.4rem 0.9rem; border-radius: var(--radius);
  transition: all 0.2s; letter-spacing: 0.02em;
  position: relative;
}
.nav-link:hover { color: var(--accent-2); background: var(--accent-glow2); }
.nav-link.active { color: var(--accent-2); background: var(--accent-glow); }

.nav-auth, .nav-user { display: flex; align-items: center; gap: 0.5rem; }

.nav-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; font-weight: 700; font-size: 0.875rem;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: all 0.2s;
  box-shadow: 0 0 12px rgba(139,92,246,0.4);
}
.nav-avatar:hover { transform: scale(1.08); box-shadow: 0 0 20px rgba(139,92,246,0.6); }

/* ===================== BUTTONS ===================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
  padding: 0.5rem 1.2rem; font-size: 0.875rem; font-weight: 600;
  border-radius: var(--radius); border: 1.5px solid transparent;
  cursor: pointer; transition: all 0.2s; letter-spacing: 0.02em;
  font-family: var(--font); text-decoration: none; position: relative; overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: #fff; border-color: var(--accent);
  box-shadow: 0 0 20px rgba(139,92,246,0.3);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  box-shadow: 0 0 32px rgba(139,92,246,0.5);
  transform: translateY(-1px); color: #fff;
}

.btn-ghost {
  background: transparent; color: var(--text-2); border-color: var(--border-soft);
}
.btn-ghost:hover { background: var(--bg-elevated); color: var(--text-1); border-color: var(--border); }

.btn-outline {
  background: transparent; color: var(--accent-2); border-color: var(--accent-dim);
}
.btn-outline:hover { background: var(--accent-glow); border-color: var(--accent); }

.btn-danger { background: transparent; color: var(--red); border-color: rgba(239,68,68,0.3); }
.btn-danger:hover { background: rgba(239,68,68,0.1); }

.btn-full { width: 100%; }
.btn-sm { padding: 0.3rem 0.75rem; font-size: 0.8rem; }

/* ===================== HERO ===================== */
.hero {
  position: relative; padding: 5rem 0 3.5rem; overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.hero-grid-bg {
  position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(rgba(139,92,246,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139,92,246,0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 100% at 50% 0%, black 30%, transparent 100%);
}
.hero-orb {
  position: absolute; width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139,92,246,0.15) 0%, transparent 70%);
  top: -200px; left: 50%; transform: translateX(-50%);
  pointer-events: none;
}

.hero .container { position: relative; z-index: 1; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.2em;
  color: var(--accent-2);
  border: 1px solid var(--border);
  padding: 0.3rem 0.9rem; border-radius: 100px;
  margin-bottom: 1.25rem; text-transform: uppercase;
  background: var(--accent-glow2);
  animation: fadeInDown 0.6s ease;
}
.hero-badge::before { content: '●'; font-size: 0.5rem; color: var(--green); animation: pulse 2s infinite; }

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 900;
  letter-spacing: -0.03em; line-height: 1.05; margin-bottom: 1rem;
  animation: fadeInUp 0.6s ease 0.1s both;
}
.hero-title-gradient {
  background: linear-gradient(135deg, #fff 30%, var(--accent-2) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: 1.1rem; color: var(--text-2); max-width: 520px; line-height: 1.7;
  animation: fadeInUp 0.6s ease 0.2s both;
}

/* ===================== STATS BAR ===================== */
.stats-bar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-soft);
}
.stats-inner {
  display: flex; align-items: center; height: 60px;
}
.stat-item {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0 2rem; flex: 1; justify-content: center;
}
.stat-num {
  font-size: 1.2rem; font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  font-variant-numeric: tabular-nums;
}
.stat-label {
  font-size: 0.78rem; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.12em;
}
.stat-sep { width: 1px; height: 28px; background: var(--border-soft); }

/* ===================== MAIN LAYOUT ===================== */
.main-content { padding: 2.5rem 0 5rem; }

.forum-layout {
  display: grid; grid-template-columns: 1fr 280px;
  gap: 1.5rem; align-items: start;
}
@media (max-width: 860px) {
  .forum-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
}

/* ===================== CATEGORY BLOCKS ===================== */
.category-block {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  overflow: hidden; margin-bottom: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.category-block:hover {
  border-color: var(--border);
  box-shadow: var(--glow-purple);
}

.category-header {
  display: flex; align-items: center; gap: 0.75rem;
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(90deg, var(--bg-elevated), var(--bg-card));
}
.cat-icon {
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--accent-glow);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
}
.cat-title { font-size: 0.95rem; font-weight: 700; color: var(--text-1); }
.cat-title-en { color: var(--text-3); font-weight: 400; }

.forum-row {
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-soft);
  transition: background 0.15s; text-decoration: none; color: inherit;
}
.forum-row:last-child { border-bottom: none; }
.forum-row:hover { background: var(--bg-hover); }

.forum-row-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--accent-glow); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0;
  transition: box-shadow 0.2s;
}
.forum-row:hover .forum-row-icon { box-shadow: 0 0 16px rgba(139,92,246,0.3); }

.forum-row-info { min-width: 0; }
.forum-row-name {
  font-weight: 600; font-size: 0.93rem; color: var(--text-1);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.forum-row-desc {
  font-size: 0.8rem; color: var(--text-2); margin-top: 2px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.forum-row-stats { text-align: right; flex-shrink: 0; }
.forum-row-stats .stat-num { font-size: 0.95rem; }
.forum-row-stats .stat-label { font-size: 0.72rem; display: block; }

/* ===================== SIDEBAR ===================== */
.sidebar { display: flex; flex-direction: column; gap: 1rem; }

.sidebar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  transition: border-color 0.2s;
}
.sidebar-card:hover { border-color: var(--border); }

.sidebar-title {
  font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--text-3); margin-bottom: 1rem;
  display: flex; align-items: center; gap: 0.5rem;
}
.sidebar-title::before {
  content: '';width: 12px; height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  border-radius: 2px;
}

.sidebar-text { font-size: 0.875rem; color: var(--text-2); margin-bottom: 1rem; line-height: 1.6; }

.sidebar-profile { display: flex; align-items: center; gap: 0.75rem; }
.profile-avatar-sm {
  width: 42px; height: 42px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; font-weight: 700; font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 16px rgba(139,92,246,0.4);
}
.profile-name { font-weight: 700; font-size: 0.9rem; }
.profile-role {
  font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.online-list { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.online-tag {
  background: var(--bg-elevated); border: 1px solid var(--border-soft);
  border-radius: 100px; padding: 0.2rem 0.65rem;
  font-size: 0.75rem; color: var(--text-2);
}
.online-tag::before { content: '●'; color: var(--green); margin-right: 4px; font-size: 0.55rem; vertical-align: 1px; }

.recent-topic {
  display: flex; flex-direction: column;
  padding: 0.55rem 0; border-bottom: 1px solid var(--border-soft);
  font-size: 0.82rem; gap: 2px;
}
.recent-topic:last-child { border-bottom: none; padding-bottom: 0; }
.recent-topic a { color: var(--text-1); font-weight: 500; }
.recent-topic a:hover { color: var(--accent-2); }
.recent-topic-meta { color: var(--text-3); font-size: 0.75rem; }

/* ===================== AUTH PAGES ===================== */
.auth-page {
  min-height: 100vh; display: flex;
  align-items: center; justify-content: center;
  padding: 2rem 1rem;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(139,92,246,0.1) 0%, transparent 60%);
}
.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px; padding: 2.5rem;
  width: 100%; max-width: 420px;
  box-shadow: var(--shadow-lg), 0 0 60px rgba(139,92,246,0.1);
  animation: fadeInUp 0.4s ease;
}
.auth-logo { text-align: center; margin-bottom: 2rem; }
.auth-logo .logo { justify-content: center; font-size: 1.4rem; }
.auth-title { font-size: 1.5rem; font-weight: 800; text-align: center; margin-bottom: 0.5rem; }
.auth-sub { text-align: center; color: var(--text-2); font-size: 0.875rem; margin-bottom: 1.75rem; }

/* ===================== FORMS ===================== */
.form-group { margin-bottom: 1.1rem; }
.form-label {
  display: block; font-size: 0.8rem; font-weight: 600;
  color: var(--text-2); margin-bottom: 0.45rem;
  letter-spacing: 0.05em; text-transform: uppercase;
}
.form-input, .form-textarea, .form-select {
  width: 100%; padding: 0.7rem 1rem;
  background: var(--bg-elevated);
  border: 1.5px solid var(--border-soft);
  border-radius: var(--radius); color: var(--text-1);
  font-size: 0.9rem; font-family: var(--font);
  transition: all 0.2s; outline: none;
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(139,92,246,0.15);
  background: var(--bg-hover);
}
.form-input::placeholder { color: var(--text-3); }
.form-textarea { min-height: 100px; resize: vertical; }
.form-select { appearance: none; cursor: pointer; }

.form-error { font-size: 0.82rem; color: var(--red); margin-top: 0.4rem; }
.form-success { font-size: 0.85rem; color: var(--green); text-align: center; margin-bottom: 0.75rem; }

.auth-switch { text-align: center; margin-top: 1.25rem; font-size: 0.875rem; color: var(--text-2); }

/* ===================== PROFILE PAGE ===================== */
.profile-page { padding: 2.5rem 0 4rem; }

.profile-header {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 2rem;
  display: flex; gap: 1.75rem; align-items: center;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-elevated) 100%);
  box-shadow: var(--glow-purple);
}

.profile-avatar-lg {
  width: 88px; height: 88px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; font-weight: 900; font-size: 2.2rem;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 32px rgba(139,92,246,0.5);
  border: 3px solid rgba(139,92,246,0.3);
}

.profile-info { flex: 1; }
.profile-username { font-size: 1.6rem; font-weight: 900; letter-spacing: -0.02em; }

.profile-badge {
  display: inline-flex; align-items: center; gap: 0.3rem;
  padding: 0.25rem 0.75rem; border-radius: 100px;
  font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em; margin-top: 0.5rem;
}
.badge-admin { background: rgba(239,68,68,0.15); color: #f87171; border: 1px solid rgba(239,68,68,0.3); }
.badge-moder { background: rgba(59,130,246,0.15); color: #60a5fa; border: 1px solid rgba(59,130,246,0.3); }
.badge-user  { background: var(--accent-glow); color: var(--accent-2); border: 1px solid var(--border); }

.profile-joined { font-size: 0.82rem; color: var(--text-3); margin-top: 0.6rem; }
.profile-stats-row { display: flex; gap: 1.75rem; margin-top: 1rem; }
.profile-stat { text-align: center; }
.profile-stat .stat-num { font-size: 1.35rem; font-weight: 800; display: block; }
.profile-stat .stat-label { font-size: 0.72rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.1em; }

.profile-tabs {
  display: flex; margin-bottom: 1.5rem;
  background: var(--bg-card); border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg); overflow: hidden;
}
.profile-tab {
  flex: 1; padding: 0.8rem 1rem; text-align: center;
  font-size: 0.875rem; font-weight: 600; color: var(--text-2);
  cursor: pointer; border-bottom: 2px solid transparent;
  transition: all 0.2s; border-right: 1px solid var(--border-soft);
  background: none; border-radius: 0;
}
.profile-tab:last-child { border-right: none; }
.profile-tab.active { color: var(--accent-2); border-bottom-color: var(--accent); background: var(--accent-glow2); }

.profile-edit-card {
  background: var(--bg-card); border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg); padding: 1.75rem;
}
.profile-edit-card h3 {
  font-size: 0.78rem; font-weight: 700; margin-bottom: 1.25rem;
  color: var(--text-3); text-transform: uppercase; letter-spacing: 0.1em;
}

/* ===================== TOPIC / POST ===================== */
.topic-page { padding: 2rem 0 4rem; }

.breadcrumb {
  display: flex; align-items: center; gap: 0.4rem;
  font-size: 0.82rem; color: var(--text-3); margin-bottom: 1.25rem;
}
.breadcrumb a { color: var(--text-3); }
.breadcrumb a:hover { color: var(--accent-2); }

.topic-header {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  background: linear-gradient(135deg, var(--bg-card), var(--bg-elevated));
}
.topic-title-main { font-size: 1.4rem; font-weight: 800; letter-spacing: -0.01em; }
.topic-meta { font-size: 0.82rem; color: var(--text-3); margin-top: 0.4rem; }

.post-card {
  background: var(--bg-card); border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg); margin-bottom: 0.75rem;
  display: grid; grid-template-columns: 190px 1fr;
  transition: border-color 0.2s;
}
.post-card:hover { border-color: var(--border); }

.post-author {
  padding: 1.25rem 1rem; border-right: 1px solid var(--border-soft);
  display: flex; flex-direction: column; align-items: center;
  gap: 0.5rem; text-align: center;
}
.post-author-avatar {
  width: 54px; height: 54px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; font-weight: 800; font-size: 1.4rem;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 20px rgba(139,92,246,0.35);
}
.post-author-name { font-weight: 700; font-size: 0.875rem; }
.post-author-posts { font-size: 0.75rem; color: var(--text-3); }
.post-body { padding: 1.25rem 1.5rem; }
.post-date { font-size: 0.78rem; color: var(--text-3); margin-bottom: 0.75rem; }
.post-content { font-size: 0.93rem; line-height: 1.8; color: var(--text-1); }

.reply-form {
  background: var(--bg-card); border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg); padding: 1.5rem; margin-top: 1.5rem;
}
.reply-form h3 {
  font-size: 0.82rem; font-weight: 700; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 1rem;
}

/* ===================== SUBFORUM PAGE ===================== */
.subforum-page { padding: 2rem 0 4rem; }
.subforum-header {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.5rem;
}
.subforum-title { font-size: 1.5rem; font-weight: 800; }

.topic-row {
  background: var(--bg-card); border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  display: grid; grid-template-columns: auto 1fr auto auto;
  align-items: center; gap: 1rem; padding: 1rem 1.25rem;
  margin-bottom: 0.5rem; transition: all 0.15s;
  cursor: pointer;
}
.topic-row:hover { background: var(--bg-hover); border-color: var(--border); transform: translateX(2px); }

.topic-row-icon {
  width: 38px; height: 38px; border-radius: 8px;
  background: var(--bg-elevated); border: 1px solid var(--border-soft);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; flex-shrink: 0;
}
.topic-row-info { min-width: 0; }
.topic-row-title {
  font-weight: 600; font-size: 0.93rem; color: var(--text-1);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: block;
}
.topic-row-title:hover { color: var(--accent-2); }
.topic-row-meta { font-size: 0.78rem; color: var(--text-3); margin-top: 2px; }
.topic-row-replies { text-align: center; }
.topic-row-date { font-size: 0.78rem; color: var(--text-3); text-align: right; }

/* ===================== TOAST ===================== */
.toast-container {
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  z-index: 9999; display: flex; flex-direction: column; gap: 0.5rem;
}
.toast {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0.8rem 1.25rem;
  font-size: 0.875rem; color: var(--text-1);
  animation: slideUp 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  max-width: 320px;
  box-shadow: var(--shadow-lg), 0 0 20px rgba(139,92,246,0.15);
}
.toast.success { border-color: rgba(34,197,94,0.4); }
.toast.error   { border-color: rgba(239,68,68,0.4); }

/* ===================== RULES ===================== */
.rules-page { padding: 2rem 0 4rem; }
.rules-card {
  background: var(--bg-card); border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg); padding: 2.5rem;
}
.rules-card h2 { font-size: 1.05rem; font-weight: 700; color: var(--accent-2); margin: 1.75rem 0 0.75rem; }
.rules-card h2:first-child { margin-top: 0; }
.rules-card p, .rules-card li { font-size: 0.93rem; color: var(--text-2); line-height: 1.75; }
.rules-card ol, .rules-card ul { padding-left: 1.5rem; }
.rules-card li { margin-bottom: 0.4rem; }
.rules-section-num {
  color: var(--text-3); font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.15em; display: block; margin-bottom: 0.25rem;
}

/* ===================== LOADING ===================== */
.loading-spinner {
  display: flex; justify-content: center; align-items: center;
  padding: 3rem; color: var(--text-3); font-size: 0.875rem; gap: 0.75rem;
}
.loading-spinner::before {
  content: '';
  width: 20px; height: 20px; border-radius: 50%;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

/* ===================== ANIMATIONS ===================== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-10px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes slideUp {
  from { transform: translateY(16px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* ===================== FOOTER ===================== */
.footer {
  border-top: 1px solid var(--border-soft);
  padding: 1.5rem 0;
  background: var(--bg-card);
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 0.82rem;
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 640px) {
  .post-card { grid-template-columns: 1fr; }
  .post-author { flex-direction: row; border-right: none; border-bottom: 1px solid var(--border-soft); }
  .topic-header { flex-direction: column; align-items: flex-start; }
  .auth-card { padding: 1.75rem 1.25rem; }
  .profile-header { flex-direction: column; text-align: center; }
  .profile-stats-row { justify-content: center; }
  .hero-title { font-size: 2rem; }
  .footer-inner { flex-direction: column; gap: 0.5rem; text-align: center; }
}