:root {
  --bg: #0f1115;
  --surface: #171a21;
  --surface-2: #1f2430;
  --border: #2a3142;
  --text: #e6e8ee;
  --muted: #8d93a4;
  --accent: #7b5cff;
  --accent-2: #9a86ff;
  --ok: #3ddc84;
  --bad: #ff6b6b;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; font-size: 15px; line-height: 1.5; }
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: var(--surface-2); padding: 1px 5px; border-radius: 4px; font-size: 13px; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; border-bottom: 1px solid var(--border); background: var(--surface);
}
.topbar .brand { font-weight: 700; color: var(--text); font-size: 17px; }
.topbar nav { display: flex; gap: 12px; align-items: center; }
.topbar .user { color: var(--muted); }

main { max-width: 980px; margin: 0 auto; padding: 20px; }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 20px; margin-bottom: 18px;
}
.card h1, .card h2 { margin: 0 0 12px; font-size: 19px; }
.muted { color: var(--muted); }
.error { color: var(--bad); }

.auth { max-width: 380px; margin: 60px auto; }
.auth label { display: block; margin-bottom: 10px; color: var(--muted); font-size: 13px; }
.auth input {
  width: 100%; padding: 10px 12px; margin-top: 4px;
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); font-size: 15px;
}
.auth button {
  width: 100%; padding: 10px 12px; margin-top: 8px;
  background: var(--accent); color: #fff; border: 0; border-radius: 8px;
  font-size: 15px; cursor: pointer;
}
.auth button:hover { background: var(--accent-2); }

.devices { list-style: none; padding: 0; margin: 0; }
.devices .empty { color: var(--muted); padding: 12px 0; }
.devices .device {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 0; border-bottom: 1px solid var(--border);
}
.devices .device:last-child { border-bottom: 0; }
.devices small { display: block; color: var(--muted); font-size: 12px; }
.devices .track { color: var(--muted); font-size: 13px; margin-top: 4px; }

.status { font-size: 12px; padding: 2px 8px; border-radius: 999px; text-transform: uppercase; letter-spacing: .05em; }
.status.online { background: rgba(61,220,132,.15); color: var(--ok); }
.status.offline { background: rgba(255,107,107,.15); color: var(--bad); }

.player .now { font-size: 20px; font-weight: 600; margin: 6px 0 2px; }
.player .controls { display: flex; align-items: center; gap: 8px; margin: 14px 0; }
.player .controls button {
  width: 42px; height: 42px; border-radius: 50%;
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text);
  font-size: 18px; cursor: pointer;
}
.player .controls button.primary { background: var(--accent); border-color: var(--accent); }
.player .controls button:hover { border-color: var(--accent-2); }
.player .controls .spacer { flex: 1; }
.player #seek { width: 100%; margin-top: 8px; }

.tabs { display: flex; gap: 4px; margin-bottom: 14px; border-bottom: 1px solid var(--border); }
.tabs button {
  background: transparent; border: 0; color: var(--muted); padding: 8px 12px;
  cursor: pointer; border-bottom: 2px solid transparent; font-size: 14px;
}
.tabs button.active { color: var(--text); border-bottom-color: var(--accent); }
.tab-content .row { padding: 10px 0; border-bottom: 1px solid var(--border); }
.tab-content .row:last-child { border-bottom: 0; }
.tab-content .row.done strong { text-decoration: line-through; color: var(--muted); }
.tab-content pre {
  margin: 6px 0 0; white-space: pre-wrap; color: var(--muted);
  font-size: 13px; background: var(--surface-2); padding: 8px; border-radius: 6px;
}
.tab-content ul { list-style: none; padding-left: 8px; margin: 8px 0; }
.tab-content ul li { display: flex; justify-content: space-between; padding: 4px 0; }
.tab-content summary { cursor: pointer; }