:root {
  --bg: #0f1117;
  --panel: #171a23;
  --panel-hover: #1e2230;
  --border: #272b38;
  --text: #e6e8ee;
  --muted: #8b90a0;
  --accent: #c96442;
  --accent-hover: #d97a5b;
  --green: #3fb950;
  --red: #f85149;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
}

header h1 { font-size: 18px; margin: 0; font-weight: 600; }
.header-actions { display: flex; align-items: center; gap: 10px; }

main { max-width: 900px; margin: 0 auto; padding: 24px; }

.center { text-align: center; padding: 60px 20px; color: var(--muted); }

.btn {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  transition: background 0.15s, border-color 0.15s;
}
.btn:hover { background: var(--panel-hover); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: transparent; }

#session-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  transition: border-color 0.15s;
}
.card:hover { border-color: #3a4056; }

.card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.card-title { font-size: 15px; font-weight: 600; margin: 0; }
.card-path { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; color: var(--muted); margin: 4px 0 0; word-break: break-all; }
.card-desc { font-size: 13px; color: var(--text); margin: 10px 0 0; opacity: 0.85; }
.card-meta { display: flex; gap: 12px; margin-top: 10px; font-size: 11px; color: var(--muted); flex-wrap: wrap; }

.pill { font-size: 11px; padding: 3px 8px; border-radius: 999px; border: 1px solid var(--border); white-space: nowrap; }
.pill-muted { color: var(--muted); }
.pill-ok { color: var(--green); border-color: var(--green); }
.pill-bad { color: var(--red); border-color: var(--red); }

.spinner {
  width: 24px; height: 24px; margin: 0 auto 12px;
  border: 3px solid var(--border); border-top-color: var(--accent);
  border-radius: 50%; animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--panel); border: 1px solid var(--border); color: var(--text);
  padding: 10px 16px; border-radius: 8px; font-size: 13px; box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}