:root {
  --cac-navy: #001f3f;
  --cac-ink: #070b14;
  --cac-card: #121826;
  --cac-crimson: #b22222;
  --cac-gold: #d4af77;
  --cac-gold-bright: #e8c547;
  --cac-muted: #9aa3b5;
  --cac-line: rgba(212, 175, 119, 0.28);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(ellipse at top, rgba(178, 34, 34, 0.18), transparent 55%),
    linear-gradient(180deg, #0a1220 0%, var(--cac-ink) 45%, #05070d 100%);
  color: #f3f4f6;
  font-family: Inter, system-ui, sans-serif;
}
.font-display { font-family: Cinzel, Georgia, serif; }

.cac-app {
  max-width: 560px;
  margin: 0 auto;
  min-height: 100vh;
  padding-bottom: 88px;
}

.cac-top {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--cac-line);
  background: rgba(7, 11, 20, 0.88);
  backdrop-filter: blur(12px);
}
.cac-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}
.cac-brand strong {
  display: block;
  font-family: Cinzel, Georgia, serif;
  letter-spacing: 0.08em;
  font-size: 14px;
}
.cac-brand span {
  display: block;
  font-family: Cinzel, Georgia, serif;
  color: var(--cac-gold);
  letter-spacing: 0.28em;
  font-size: 9px;
}

.cac-compose {
  margin: 16px;
  padding: 14px;
  border: 1px solid var(--cac-line);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(18, 24, 38, 0.95), rgba(10, 14, 24, 0.95));
}
.cac-compose textarea {
  width: 100%;
  min-height: 96px;
  resize: vertical;
  border: 0;
  outline: none;
  background: transparent;
  color: inherit;
  font: inherit;
  line-height: 1.45;
}
.cac-compose-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
}
.cac-btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 10px 18px;
  font-weight: 700;
  cursor: pointer;
  font-family: Cinzel, Georgia, serif;
  letter-spacing: 0.04em;
}
.cac-btn-primary {
  background: linear-gradient(135deg, #dc2626, #7f1d1d);
  color: #fff;
  box-shadow: 0 10px 28px -12px rgba(220, 38, 38, 0.8);
}
.cac-btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.cac-btn-ghost {
  background: transparent;
  color: var(--cac-gold);
  border: 1px solid var(--cac-line);
}

.cac-feed { padding: 0 16px 24px; display: grid; gap: 14px; }
.cac-post {
  border: 1px solid var(--cac-line);
  border-radius: 18px;
  padding: 14px 14px 12px;
  background: rgba(18, 24, 38, 0.72);
}
.cac-post-head {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
}
.cac-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #dc2626, #3a0009);
  color: var(--cac-gold);
  font-family: Cinzel, Georgia, serif;
  font-weight: 800;
  flex-shrink: 0;
}
.cac-post-meta strong { display: block; font-size: 14px; }
.cac-post-meta span { color: var(--cac-muted); font-size: 12px; }
.cac-post-body {
  white-space: pre-wrap;
  line-height: 1.5;
  font-size: 15px;
}
.cac-post-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.cac-chip {
  appearance: none;
  border: 1px solid var(--cac-line);
  background: transparent;
  color: var(--cac-muted);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
}
.cac-chip.is-on {
  color: var(--cac-gold);
  border-color: rgba(212, 175, 119, 0.55);
  background: rgba(212, 175, 119, 0.08);
}

.cac-nav {
  position: fixed;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: min(560px, 100%);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
  padding: 10px 8px calc(10px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--cac-line);
  background: rgba(7, 11, 20, 0.94);
  backdrop-filter: blur(14px);
}
.cac-nav a {
  text-decoration: none;
  color: var(--cac-muted);
  text-align: center;
  font-size: 10px;
  letter-spacing: 0.04em;
  padding: 6px 2px;
  border-radius: 12px;
}
.cac-nav a strong {
  display: block;
  font-size: 16px;
  line-height: 1.2;
  margin-bottom: 2px;
}
.cac-nav a.is-active,
.cac-nav a:hover {
  color: var(--cac-gold);
  background: rgba(212, 175, 119, 0.08);
}

.cac-panel {
  margin: 16px;
  padding: 18px;
  border: 1px solid var(--cac-line);
  border-radius: 18px;
  background: rgba(18, 24, 38, 0.8);
}
.cac-panel h2 {
  margin: 0 0 8px;
  font-family: Cinzel, Georgia, serif;
  font-size: 22px;
}
.cac-panel p { margin: 0; color: var(--cac-muted); line-height: 1.5; }
.cac-empty {
  text-align: center;
  color: var(--cac-muted);
  padding: 40px 20px;
}

.cac-auth-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px 16px;
}
.cac-auth-card {
  width: min(420px, 100%);
  border: 1px solid var(--cac-line);
  border-radius: 22px;
  padding: 28px 22px;
  background: rgba(18, 24, 38, 0.9);
  backdrop-filter: blur(16px);
}
.cac-auth-card label {
  display: block;
  margin: 14px 0 6px;
  font-size: 13px;
  color: var(--cac-muted);
}
.cac-auth-card input {
  width: 100%;
  height: 42px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(0,0,0,0.25);
  color: inherit;
  padding: 0 12px;
  font: inherit;
}
.cac-auth-card .cac-btn { width: 100%; margin-top: 18px; }
.cac-auth-card .err {
  color: #fca5a5;
  font-size: 13px;
  margin-top: 10px;
  min-height: 1.2em;
}
.cac-note {
  margin-top: 14px;
  font-size: 12px;
  color: var(--cac-muted);
  line-height: 1.45;
}
.hidden { display: none !important; }