:root {
  --bg: #f6f7f5;
  --surface: #ffffff;
  --text: #121212;
  --muted: #6a6a6a;
  --border: #e3e5e1;
  --accent: #1db954;
  --accent-hover: #1ed760;
  --accent-text: #000;
  --error: #c62828;
  --ok: #157a3a;
  --radius: 12px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f0f;
    --surface: #1a1a1a;
    --text: #f2f2f2;
    --muted: #a0a0a0;
    --border: #2a2a2a;
    --error: #ff6b6b;
    --ok: #3ddc84;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 960px; margin: 0 auto; padding: 0 16px 48px; }
.muted { color: var(--muted); }
.error { color: var(--error); }
[hidden] { display: none !important; }

.top {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 960px; margin: 0 auto; padding: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; }
.logo {
  width: 28px; height: 28px; border-radius: 8px; background: var(--accent);
  background-image: linear-gradient(#000,#000), linear-gradient(#000,#000), linear-gradient(#000,#000);
  background-size: 14px 3px, 10px 3px, 6px 3px;
  background-position: 7px 8px, 7px 13px, 7px 18px;
  background-repeat: no-repeat;
}
.user { display: flex; align-items: center; gap: 10px; }
.user img { border-radius: 50%; object-fit: cover; }

button, .btn {
  font: inherit; cursor: pointer; border-radius: 999px; border: 1px solid transparent;
  padding: 8px 16px; text-decoration: none; display: inline-block; white-space: nowrap;
}
button:disabled { opacity: .5; cursor: default; }
.primary { background: var(--accent); color: var(--accent-text); font-weight: 600; }
.primary:hover:not(:disabled) { background: var(--accent-hover); }
.big { padding: 14px 28px; font-size: 16px; }
.ghost { background: transparent; color: var(--text); border-color: var(--border); }
.ghost:hover:not(:disabled) { border-color: var(--muted); }
.link { background: none; border: none; padding: 0; color: var(--muted); text-decoration: underline; }
.link.danger:hover { color: var(--error); }

.landing { padding: 48px 0; max-width: 640px; }
.landing h1 { font-size: clamp(32px, 6vw, 48px); line-height: 1.1; margin: 0 0 16px; letter-spacing: -0.02em; }
.lead { font-size: 17px; color: var(--muted); margin: 0 0 28px; }
.features { list-style: none; padding: 0; margin: 40px 0 0; display: grid; gap: 14px; }
.features li { color: var(--muted); }
.features strong { display: block; color: var(--text); }

.toolbar { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin: 8px 0 12px; }
.toolbar input[type=search] {
  flex: 1; min-width: 200px; font: inherit; padding: 10px 14px;
  border: 1px solid var(--border); border-radius: 999px; background: var(--surface); color: var(--text);
}
.check { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; user-select: none; }

.playlists { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.pl {
  display: grid; grid-template-columns: 56px 1fr auto; gap: 14px; align-items: center;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px;
}
.pl.readonly { opacity: .6; }
.cover { width: 56px; height: 56px; border-radius: 6px; object-fit: cover; background: var(--border); }
.meta { min-width: 0; }
.name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sub { font-size: 13px; }
.state { font-size: 13px; min-height: 1em; }
.state.ok { color: var(--ok); }
.state.error { color: var(--error); }

.controls { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
select {
  font: inherit; padding: 7px 10px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
}

.danger-zone { margin-top: 40px; text-align: center; }

@media (max-width: 720px) {
  .pl { grid-template-columns: 48px 1fr; }
  .cover { width: 48px; height: 48px; }
  .controls { grid-column: 1 / -1; justify-content: flex-start; }
  .user span { display: none; }
}