/* Reset & base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #21253a;
  --border: #2a2f45;
  --text: #e2e8f0;
  --muted: #64748b;
  --green: #4ade80;
  --red: #f87171;
  --yellow: #facc15;
  --blue: #60a5fa;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

html { font-size: 15px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  min-height: 100vh;
}

/* ---- Header ---- */
header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--green);
}
.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.muted { color: var(--muted); font-size: 0.82rem; }

button {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.38rem 0.85rem;
  cursor: pointer;
  font-size: 0.85rem;
  transition: background 0.15s, border-color 0.15s;
}
button:hover { background: var(--border); }

.auto-refresh-label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--muted);
}
select {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.3rem 0.5rem;
  font-size: 0.85rem;
  cursor: pointer;
}

/* ---- Main ---- */
main {
  max-width: 1200px;
  margin: 1.5rem auto;
  padding: 0 1.5rem 3rem;
}

/* ---- Status banner ---- */
.status-banner {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.4rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 1.5rem;
  background: var(--surface);
  transition: border-color 0.3s, background 0.3s;
}
.status-banner.connected   { border-color: var(--green);  background: rgba(74,222,128,0.07); }
.status-banner.paused      { border-color: var(--yellow); background: rgba(250,204,21,0.07); }
.status-banner.disconnected{ border-color: var(--red);    background: rgba(248,113,113,0.07); }
.status-banner.unknown     { border-color: var(--muted);  background: rgba(100,116,139,0.07); }

.banner-icon { font-size: 1.6rem; line-height: 1; transition: color 0.3s; }
.status-banner.connected    .banner-icon { color: var(--green); }
.status-banner.paused       .banner-icon { color: var(--yellow); }
.status-banner.disconnected .banner-icon { color: var(--red); }
.status-banner.unknown      .banner-icon { color: var(--muted); }

.banner-text { flex: 1; }
#banner-title { font-size: 1.05rem; font-weight: 600; display: block; }
#banner-sub   { font-size: 0.82rem; }

.banner-actions { display: flex; gap: 0.5rem; }
.btn-success { border-color: var(--green); color: var(--green); }
.btn-success:hover { background: rgba(74,222,128,0.15); }
.btn-danger  { border-color: var(--red); color: var(--red); }
.btn-danger:hover  { background: rgba(248,113,113,0.15); }

/* ---- Grid ---- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}
.card-wide { grid-column: 1 / -1; }

/* ---- Cards ---- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: border-color 0.3s;
}
.card-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 1.1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
}
.card-icon { font-size: 1.1rem; }
.card-header h2 { font-size: 0.9rem; font-weight: 600; flex: 1; }

.badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: background 0.3s, color 0.3s, border-color 0.3s;
}
.badge.ok    { background: rgba(74,222,128,0.15); color: var(--green); border-color: var(--green); }
.badge.error { background: rgba(248,113,113,0.15); color: var(--red);   border-color: var(--red); }
.badge.warn  { background: rgba(250,204,21,0.15);  color: var(--yellow);border-color: var(--yellow); }

.card-body { padding: 0.85rem 1.1rem; display: flex; flex-direction: column; gap: 0.6rem; }

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.85rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.45rem;
}
.stat-row:last-child { border-bottom: none; padding-bottom: 0; }
.stat-label { color: var(--muted); white-space: nowrap; }
.stat-value  { text-align: right; word-break: break-all; }
.mono { font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace; font-size: 0.82rem; }

/* ---- History track ---- */
.history-track {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  margin-bottom: 0.6rem;
}
.history-tick {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  background: var(--surface2);
  border: 1px solid var(--border);
  cursor: default;
  transition: background 0.3s;
}
.history-tick.connected    { background: var(--green);  border-color: var(--green); }
.history-tick.paused       { background: var(--yellow); border-color: var(--yellow); }
.history-tick.disconnected { background: var(--red);    border-color: var(--red); }
.history-tick.unknown      { background: var(--muted);  border-color: var(--muted); }

.history-legend { display: flex; gap: 0.4rem; align-items: center; font-size: 0.8rem; color: var(--muted); }
.dot { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.dot.connected    { background: var(--green); }
.dot.paused       { background: var(--yellow); }
.dot.disconnected { background: var(--red); }
.dot.unknown      { background: var(--muted); }

/* ---- Toast ---- */
.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.75rem 1.1rem;
  border-radius: 10px;
  font-size: 0.88rem;
  box-shadow: var(--shadow);
  z-index: 999;
  opacity: 1;
  pointer-events: auto;
  transition: opacity 0.3s;
}
.toast.hidden  { opacity: 0; pointer-events: none; }
.toast.success { border-color: var(--green); color: var(--green); }
.toast.error   { border-color: var(--red);   color: var(--red); }

/* ---- Spinner ---- */
@keyframes spin { to { transform: rotate(360deg); } }
.spin { display: inline-block; animation: spin 1s linear infinite; }

/* ---- Responsive ---- */
@media (max-width: 600px) {
  .header-inner { flex-direction: column; align-items: flex-start; }
  .banner-actions { flex-direction: column; }
  .grid { grid-template-columns: 1fr; }
}