:root {
  --bg: #0d111c;
  --panel: rgba(255, 255, 255, 0.05);
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8ecf4;
  --muted: #a7b3c5;
  --accent: #5ef0c0;
  --accent-2: #7ea7ff;
  --danger: #ff7b7b;
  --card-radius: 16px;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; background: var(--bg); color: var(--text); font-family: 'Space Grotesk', system-ui, -apple-system, sans-serif; }
body { overflow-x: hidden; }

a { color: inherit; text-decoration: none; }

.bg {
  position: fixed; inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(94, 240, 192, 0.16), transparent 35%),
              radial-gradient(circle at 80% 10%, rgba(126, 167, 255, 0.12), transparent 32%),
              radial-gradient(circle at 60% 80%, rgba(255, 126, 168, 0.10), transparent 30%),
              linear-gradient(135deg, #0b1221, #0a0e17 60%);
  filter: saturate(120%);
  z-index: 0;
}

.shell { position: relative; z-index: 1; max-width: 1200px; margin: 0 auto; padding: 40px 24px 80px; }

.hero { display: flex; justify-content: space-between; gap: 24px; align-items: center; margin-bottom: 28px; }
.hero h1 { margin: 8px 0 6px; font-size: 32px; line-height: 1.15; }
.hero .lede { margin: 0; color: var(--muted); max-width: 720px; }

.eyebrow { text-transform: uppercase; letter-spacing: 0.12em; font-size: 11px; color: var(--muted); margin: 0; }
.lede { font-size: 16px; }

.grid { display: grid; grid-template-columns: 320px 1fr; gap: 18px; }
.stack { display: flex; flex-direction: column; gap: 16px; }
.main { flex: 1; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 18px 18px 20px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; }
.card h2 { margin: 4px 0 0; font-size: 20px; }

.form { display: flex; flex-direction: column; gap: 10px; margin-top: 12px; }
.form label { color: var(--muted); font-size: 14px; }
.form input {
  width: 100%;
  margin-top: 4px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

button {
  cursor: pointer;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border-radius: 12px;
  padding: 10px 14px;
  font-size: 14px;
  transition: all 0.15s ease;
}
button:hover { border-color: rgba(255, 255, 255, 0.18); transform: translateY(-1px); }
button:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

button.primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #041018; border: none; font-weight: 600; }
button.ghost { border: 1px dashed var(--border); background: transparent; }

.segmented { display: inline-flex; background: rgba(255, 255, 255, 0.04); border: 1px solid var(--border); border-radius: 12px; padding: 4px; gap: 4px; }
.seg-btn { border: none; background: transparent; padding: 8px 12px; border-radius: 8px; color: var(--muted); }
.seg-btn.active { background: rgba(255, 255, 255, 0.08); color: var(--text); }

.channel-list { display: grid; gap: 10px; }
.channel { display: flex; justify-content: space-between; align-items: center; padding: 12px 14px; border: 1px solid var(--border); border-radius: 12px; background: rgba(255, 255, 255, 0.03); }
.channel h3 { margin: 0; font-size: 16px; }
.channel .sub { color: var(--muted); font-size: 13px; margin: 2px 0 0; }

.controls .buttons { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.controls .sliders { margin-top: 12px; }
.slider-label { color: var(--muted); font-size: 13px; display: flex; align-items: center; gap: 10px; }
input[type="range"] { width: 200px; accent-color: var(--accent); }

.pill { padding: 8px 12px; border-radius: 999px; border: 1px solid var(--border); background: rgba(255, 255, 255, 0.05); color: var(--muted); font-size: 13px; }
.tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag { padding: 6px 10px; border-radius: 10px; background: rgba(255, 255, 255, 0.05); border: 1px solid var(--border); font-size: 13px; color: var(--muted); }

.row { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.title-row { margin-bottom: 6px; }

.user-list { display: flex; flex-direction: column; gap: 8px; }
.user-row { display: flex; justify-content: space-between; align-items: center; padding: 10px 12px; border: 1px solid var(--border); border-radius: 12px; background: rgba(255, 255, 255, 0.03); }
.user-row .name { font-weight: 600; }
.user-row .state { color: var(--muted); font-size: 13px; }

.stream-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
.stream-card { border: 1px solid var(--border); border-radius: 12px; padding: 12px; background: rgba(255, 255, 255, 0.03); display: flex; flex-direction: column; gap: 8px; }
.stream-card h4 { margin: 0; font-size: 15px; }
.stream-card .meta { color: var(--muted); font-size: 13px; }
.stream-card audio { width: 100%; }

.hint { color: var(--muted); font-size: 13px; min-height: 18px; }

.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); padding: 12px 16px; border-radius: 12px; background: rgba(0, 0, 0, 0.8); color: #fff; opacity: 0; pointer-events: none; transition: opacity 0.3s ease, transform 0.3s ease; z-index: 5; border: 1px solid rgba(255, 255, 255, 0.08); }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 1024px) {
  .grid { grid-template-columns: 1fr; }
  .hero { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  .controls .buttons { flex-direction: column; }
  input[type="range"] { width: 100%; }
}