:root {
  --fontDisplay: "Iowan Old Style", "Palatino Linotype", Palatino, serif;
  --fontBody: Inter, ui-sans-serif, system-ui, sans-serif;
  --fontMono: ui-monospace, SFMono-Regular, Menlo, monospace;
  --radius: 14px;
  --bg: #0b0d10;
  --bgElevated: #14181d;
  --bgChat: #0f1216;
  --text: #e8edf2;
  --textMuted: #8b98a5;
  --accent: #6ee7b7;
  --accentText: #06281c;
  --danger: #fb7185;
  --ownBubble: #123d32;
  --otherBubble: #1c232b;
  --border: #24303a;
  --guestBadge: #64748b;
  --adminBadge: #fbbf24;
  --botBadge: #67e8f9;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); font-family: var(--fontBody); }
a { color: var(--accent); text-decoration: none; }
h1, h2, h3, .brand-name { font-family: var(--fontDisplay); font-weight: 600; letter-spacing: -0.02em; }
.boot { padding: 4rem; color: var(--textMuted); }

.topbar {
  display: flex; align-items: center; gap: 1.25rem;
  padding: 0.85rem 1.25rem; border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bgElevated) 88%, transparent);
  position: sticky; top: 0; z-index: 20; backdrop-filter: blur(12px);
}
.brand { display: flex; align-items: center; gap: 0.6rem; color: var(--text); }
.logo { width: 28px; height: 28px; border-radius: 8px; }
.nav { display: flex; gap: 0.9rem; flex: 1; }
.nav a { color: var(--textMuted); font-size: 0.92rem; }
.nav a.active, .nav a:hover { color: var(--text); }
.session-chip { margin-left: auto; }
.who, .who-row { display: flex; align-items: center; gap: 0.55rem; }
.avatar { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; background: var(--bgElevated); border: 1px solid var(--border); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 0 1rem; border: 0; border-radius: var(--radius);
  background: var(--accent); color: var(--accentText); font-weight: 600; cursor: pointer;
}
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn.danger { color: var(--danger); }
.btn.tiny { min-height: 32px; padding: 0 0.6rem; font-size: 0.8rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.4rem; }

.input, textarea.input, .composer-input {
  width: 100%; background: var(--bgElevated); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 0.7rem 0.85rem; font: inherit;
}
.muted { color: var(--textMuted); }
.error { color: var(--danger); }
.hidden { display: none !important; }

.landing { max-width: 880px; margin: 0 auto; padding: 3rem 1.25rem 5rem; }
.hero h1 { font-size: clamp(2.2rem, 6vw, 4rem); margin: 0.2rem 0 0.8rem; }
.lede { font-size: 1.15rem; color: var(--textMuted); max-width: 36rem; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.72rem; color: var(--accent); }
.cta-row { display: flex; gap: 0.7rem; margin-top: 1.5rem; flex-wrap: wrap; }
.card, .guest-card, .auth-page .card {
  background: var(--bgElevated); border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px); padding: 1.25rem; margin-top: 2rem;
}
.auth-page { max-width: 420px; margin: 3rem auto; padding: 0 1rem; }
.auth-page .card { display: flex; flex-direction: column; gap: 0.7rem; }
.avatar-picker { display: grid; grid-template-columns: repeat(8, 1fr); gap: 0.4rem; margin: 0.8rem 0; }
.avatar-opt { border: 2px solid transparent; background: transparent; padding: 0; border-radius: 50%; cursor: pointer; }
.avatar-opt img { width: 40px; height: 40px; border-radius: 50%; display: block; }
.avatar-opt.selected { border-color: var(--accent); }

.page { max-width: 960px; margin: 0 auto; padding: 1.5rem 1.25rem 4rem; }
.card-page { display: flex; flex-direction: column; gap: 0.7rem; max-width: 640px; }
.dir-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 0.9rem; }
.dir-card {
  display: flex; gap: 0.8rem; align-items: flex-start;
  background: var(--bgElevated); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0.9rem;
}
.dir-card h3 { margin: 0 0 0.2rem; font-size: 1.05rem; }
.inbox { display: flex; flex-direction: column; gap: 0.4rem; }
.inbox-row {
  display: flex; gap: 0.75rem; align-items: center; color: inherit;
  padding: 0.7rem; border-radius: var(--radius); border: 1px solid var(--border); background: var(--bgElevated);
}

.chat-layout { display: grid; grid-template-columns: minmax(0, 1fr) 240px; min-height: calc(100dvh - 62px); }
.chat-col { display: flex; flex-direction: column; background: var(--bgChat); min-width: 0; }
.chat-head { display: flex; justify-content: space-between; align-items: center; padding: 0.8rem 1rem; border-bottom: 1px solid var(--border); }
.chat-head h1 { margin: 0; font-size: 1.15rem; }
.log { flex: 1; overflow-y: auto; padding: 1rem; display: flex; flex-direction: column; gap: 0.65rem; }
.composer {
  display: flex; gap: 0.5rem; padding: 0.75rem; border-top: 1px solid var(--border);
  position: sticky; bottom: 0; background: var(--bgChat);
}
.composer-input { flex: 1; resize: none; min-height: 44px; }
.presence { border-left: 1px solid var(--border); padding: 1rem; background: var(--bg); }
.presence-row { display: flex; align-items: center; gap: 0.5rem; margin: 0.45rem 0; font-size: 0.92rem; }
.presence h2 { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--textMuted); }
.typing { min-height: 1.2rem; padding: 0 1rem 0.4rem; color: var(--textMuted); font-size: 0.85rem; }
.reconnect { color: var(--adminBadge); font-size: 0.82rem; }
.watermark { text-align: center; font-size: 0.75rem; color: var(--textMuted); padding: 0.35rem; opacity: 0.7; }
.day-sep, .system { text-align: center; color: var(--textMuted); font-size: 0.78rem; margin: 0.4rem 0; }
.msg { display: flex; gap: 0.55rem; max-width: 78%; }
.msg.own { margin-left: auto; flex-direction: row-reverse; }
.msg-meta { display: flex; gap: 0.4rem; align-items: baseline; font-size: 0.75rem; color: var(--textMuted); }
.bubble-body {
  padding: 0.55rem 0.75rem; border-radius: var(--radius); background: var(--otherBubble);
}
.msg.own .bubble-body { background: var(--ownBubble); }
.bubble-body p { margin: 0.15rem 0; line-height: 1.45; }
.chat-img { max-width: 280px; border-radius: 10px; display: block; margin-bottom: 0.3rem; }

.pill {
  display: inline-flex; align-items: center; border-radius: 999px;
  padding: 0.05rem 0.4rem; font-size: 0.68rem; font-weight: 600; margin-left: 0.25rem;
}
.pill.bot { background: color-mix(in srgb, var(--botBadge) 25%, transparent); color: var(--botBadge); }
.pill.guest { background: color-mix(in srgb, var(--guestBadge) 30%, transparent); color: var(--guestBadge); }
.pill.admin { background: color-mix(in srgb, var(--adminBadge) 25%, transparent); color: var(--adminBadge); }
.chip { display: inline-block; margin-right: 0.3rem; padding: 0.1rem 0.4rem; border-radius: 999px; border: 1px solid var(--border); font-size: 0.72rem; }

.table { width: 100%; border-collapse: collapse; }
.table th, .table td { text-align: left; padding: 0.45rem 0.3rem; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.stack { display: flex; flex-direction: column; gap: 0.45rem; }
.check { display: flex; align-items: center; gap: 0.4rem; }
.subnav { display: flex; gap: 1rem; margin-bottom: 1rem; }
.preview-log { min-height: 50vh; border: 1px solid var(--border); border-radius: var(--radius); }

@media (max-width: 840px) {
  .chat-layout { grid-template-columns: 1fr; }
  .presence { display: none; }
  .avatar-picker { grid-template-columns: repeat(4, 1fr); }
}