:root {
  --bg: #f3f5f8;
  --card: #ffffff;
  --text: #1f2633;
  --muted: #5d6b82;
  --accent: #0f766e;
  --danger: #c2410c;
  --border: #d9e0ea;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Segoe UI, Tahoma, sans-serif;
  background: linear-gradient(130deg, #eef8ff, #f7f8ec 55%, #f8ecee);
  color: var(--text);
}
.auth-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 16px;
}
.auth-card {
  width: min(420px, 100%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 20px 40px #10204014;
}
.stack { display: grid; gap: 10px; }
label { display: grid; gap: 6px; font-size: 14px; }
input, textarea, select, button {
  font: inherit;
  border: 1px solid #b9c4d5;
  border-radius: 8px;
  padding: 9px 10px;
}
button {
  cursor: pointer;
  background: #fff;
}
button:hover { border-color: #7fa4cf; }
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 50;
}
.muted { color: var(--muted); margin-left: 8px; }
.page { padding: 16px; display: grid; gap: 16px; }
.tabs { display: flex; gap: 8px; flex-wrap: wrap; }
.tabs button.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}
.hidden { display: none !important; }
.grid-2 {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}
.card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  background: #fff;
}
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.row-spread { display: flex; justify-content: space-between; gap: 8px; }
.list { display: grid; gap: 8px; }
.error { color: var(--danger); font-size: 13px; }
dialog {
  border: none;
  border-radius: 12px;
  width: min(780px, 96vw);
  max-height: 92vh;
  overflow: auto;
  padding: 0;
}
dialog::backdrop { background: #0007; }
.modal-body { padding: 16px; }
.player-wrap {
  width: min(1200px, 100%);
  margin-inline: auto;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  position: relative;
}
.player-wrap video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
}
.idle {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #fff;
  background: #000;
}
.workplace-main {
  padding: 16px;
  display: grid;
  gap: 14px;
}
.controls-row {
  width: min(1200px, 100%);
  margin-inline: auto;
  display: flex;
  gap: 10px;
}
.small { font-size: 12px; color: var(--muted); }
.preview-wrap { aspect-ratio: 16/9; background: #000; border-radius: 10px; overflow: hidden; position: relative; }
.preview-wrap video { width: 100%; height: 100%; object-fit: contain; }
.control-layout {
  display: grid;
  grid-template-columns: 380px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}
.control-left,
.control-right {
  min-width: 0;
}
.workplace-active {
  border-color: var(--accent);
  background: #f4fffd;
}
.playlist-builder {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 170px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}
.playlist-builder select {
  width: 100%;
}
.playlist-controls button {
  width: 100%;
}
@media (max-width: 980px) {
  .control-layout {
    grid-template-columns: 1fr;
  }
  .playlist-builder {
    grid-template-columns: 1fr;
  }
}