:root {
  --bg: #0f1419;
  --panel: #15202b;
  --text: #f5f7fa;
  --muted: #8b98a5;
  --accent: #1d9bf0;
  --public: #e7e9ea;
  --pm: #ffd166;
  --tip: #7ee787;
  --warn: #f85149;
  --ok: #3fb950;
  --line: #2f3b47;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  min-height: 100%;
}
body {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  padding-bottom: env(safe-area-inset-bottom);
}

a { color: var(--accent); text-decoration: none; }
.muted { color: var(--muted); }
.error { color: var(--warn); }

.top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px 8px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(15, 20, 25, 0.92);
  backdrop-filter: blur(8px);
  z-index: 5;
}
.top h1 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
}
.top nav {
  display: flex;
  gap: 14px;
  font-size: 0.95rem;
  padding-top: 2px;
}
.status {
  margin: 4px 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}
.status.live { color: var(--ok); }
.status.err { color: var(--warn); }
.status.warn { color: #f0c14a; }

.banner {
  margin: 10px 16px 0;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 0.95rem;
}
.banner.warn { background: #3a1f1f; color: #ffb4b0; }
.banner.ok { background: #16331f; color: #b6f0c0; }

.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
  padding: 10px 12px;
  position: sticky;
  top: 62px;
  background: var(--bg);
  z-index: 4;
}
.tab {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--muted);
  border-radius: 999px;
  padding: 10px 8px;
  font-size: 0.95rem;
  font-weight: 600;
}
.tab.active {
  color: var(--text);
  border-color: var(--accent);
  background: #1a2836;
}
.badge {
  display: inline-block;
  min-width: 1.2em;
  padding: 0 6px;
  margin-left: 4px;
  border-radius: 999px;
  background: var(--pm);
  color: #111;
  font-size: 0.75rem;
}

main {
  flex: 1;
  padding: 0 12px 24px;
  overflow: hidden;
}
.panel {
  display: none;
  flex-direction: column;
  gap: 8px;
  max-height: calc(100dvh - 170px);
  overflow-y: auto;
  padding-bottom: 24px;
  -webkit-overflow-scrolling: touch;
}
.panel.active { display: flex; }

.msg {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 1.05rem;
  line-height: 1.35;
}
.msg .meta {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 4px;
  font-size: 0.8rem;
  color: var(--muted);
}
.msg .user {
  color: var(--accent);
  font-weight: 700;
  font-size: 0.95rem;
}
.msg.pm {
  border-color: #6a5420;
  background: #241c0d;
}
.msg.pm .user { color: var(--pm); }
.msg.tip {
  border-color: #2f6b3a;
  background: #122018;
}
.msg.tip .user { color: var(--tip); }
.msg .body { word-break: break-word; white-space: pre-wrap; }
.msg.empty {
  color: var(--muted);
  text-align: center;
  border-style: dashed;
}

.login-page {
  display: grid;
  place-items: center;
  padding: 24px;
}
.login-card, .card-form {
  width: min(420px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px 18px;
}
.login-card h1 { margin: 0 0 6px; font-size: 1.4rem; }
label {
  display: block;
  margin: 14px 0 6px;
  color: var(--muted);
  font-size: 0.9rem;
}
input {
  width: 100%;
  padding: 12px 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #0d1218;
  color: var(--text);
  font-size: 1.05rem;
}
button[type="submit"] {
  margin-top: 16px;
  width: 100%;
  padding: 12px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
}
.settings {
  padding: 12px 16px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.settings h2 {
  margin: 0 0 4px;
  font-size: 1.05rem;
}
.hint {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.4;
}
.hint code {
  font-size: 0.8rem;
  color: #c9d1d9;
}