:root {
  --bg-0: #050505;
  --bg-1: #0d0d0d;
  --bg-2: #151515;
  --card: #101010;
  --line: #2f2f2f;
  --text: #f5f5f5;
  --muted: #b0b0b0;
  --accent: #f0f0f0;
  --accent-2: #d6d6d6;
  --danger: #d0d0d0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 10%, #1d1d1d 0%, rgba(29, 29, 29, 0) 32%),
    radial-gradient(circle at 85% 8%, #2a2a2a 0%, rgba(42, 42, 42, 0) 30%),
    linear-gradient(120deg, var(--bg-0), var(--bg-1), var(--bg-2));
}

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.06;
  background-image: radial-gradient(#ffffff 0.5px, transparent 0.5px);
  background-size: 4px 4px;
}

.hero {
  padding: 3.5rem 1.2rem 1.6rem;
  text-align: center;
}

.kicker {
  margin: 0;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-size: 0.76rem;
}

h1, h2, h3 {
  font-family: "Orbitron", sans-serif;
  margin: 0;
  line-height: 1.2;
}

h1 {
  margin-top: 0.7rem;
  font-size: clamp(2rem, 5vw, 3.7rem);
}

.subtitle {
  margin: 0.8rem auto 0;
  max-width: 60ch;
  color: var(--muted);
}

.layout {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
  width: calc(100% - 1rem);
  margin: 0 0.5rem 2rem;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  backdrop-filter: blur(4px);
  padding: 1rem;
}

.settings-grid {
  margin-top: 0.8rem;
  display: grid;
  gap: 0.7rem;
  grid-template-columns: 1fr;
}

label {
  display: grid;
  gap: 0.4rem;
  font-weight: 500;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  background: #121212;
  color: var(--text);
  border-radius: 10px;
  padding: 0.65rem 0.7rem;
}

button {
  font: inherit;
  border: 0;
  border-radius: 10px;
  background: linear-gradient(90deg, var(--accent), #cccccc);
  color: #202020;
  padding: 0.6rem 0.9rem;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.06);
}

button.ghost {
  background: #171717;
  color: var(--accent-2);
  border: 1px solid var(--line);
}

button.ghost.active {
  background: #f0f0f0;
  color: #111111;
  border-color: #d0d0d0;
}

.control-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  background: #171717;
  color: var(--accent-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.6rem 0.9rem;
  font-weight: 700;
}

.control-link:hover {
  filter: brightness(1.06);
}

.settings-actions {
  margin-top: 0.8rem;
  display: flex;
  gap: 0.6rem;
}

.hint,
.status,
.panel-head p,
.stream-meta {
  color: var(--muted);
}

.status {
  min-height: 1.4rem;
  margin-top: 0.5rem;
}

.status.error {
  color: var(--danger);
}

.panel-head {
  margin-bottom: 0.7rem;
}

.panel-head p {
  margin: 0.25rem 0 0;
}

.stream-columns {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.stream-list {
  margin: 0.5rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.5rem;
  max-height: 31rem;
  overflow-y: auto;
  padding-right: 0.35rem;
}

.stream-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.6rem;
  background: var(--card);
}

.stream-item.is-live {
  cursor: pointer;
}

.stream-item.is-live:hover {
  border-color: #8d8d8d;
}

.stream-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}

.stream-name {
  font-weight: 700;
}

.stream-tag {
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 0.75rem;
  padding: 0.2rem 0.48rem;
}

.stream-tag.live {
  color: #111111;
  background: #eeeeee;
  border-color: #d7d7d7;
}

.stream-tag.offline {
  color: var(--muted);
  background: #1a1a1a;
}

.add-stream-btn {
  margin-top: 0.5rem;
  width: 100%;
}

.add-stream-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.viewer-grid {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 1rem;
}

.viewer-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #0c0c0c;
  padding: 0.6rem;
  animation: appear 240ms ease-out;
}

.viewer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.viewer-title {
  font-weight: 700;
}

.viewer-controls {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.viewer-btn {
  background: #1a1a1a;
  color: #f0f0f0;
  border: 1px solid #343434;
  padding: 0.38rem 0.56rem;
  font-size: 0.82rem;
}

.remove-btn {
  background: #202020;
  color: #f0f0f0;
  border: 1px solid #3a3a3a;
}

.player-host {
  width: 100%;
  height: 0;
  padding-bottom: 56.25%;
  position: relative;
  overflow: hidden;
  border-radius: 8px;
}

.player-host > div {
  position: absolute;
  inset: 0;
}

.player-host > iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.viewer-card.size-sm .player-host {
  padding-bottom: 56.25%;
}

.viewer-card.size-md .player-host {
  padding-bottom: 75%;
}

.viewer-card.size-lg .player-host {
  padding-bottom: 95%;
}

.viewer-grid.focus-mode .viewer-card:not(.is-focused) .player-host {
  padding-bottom: 52%;
}

.viewer-grid.performance-mode .viewer-card.size-sm .player-host {
  padding-bottom: 48%;
}

.viewer-grid.focus-mode .viewer-card.is-focused {
  border-color: #7a7a7a;
}

.viewer-card.size-sm {
  grid-column: span 1;
}

.viewer-card.size-md {
  grid-column: span 1;
}

.viewer-card.size-lg {
  grid-column: span 1;
}

@keyframes appear {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 760px) {
  .settings-grid,
  .stream-columns {
    grid-template-columns: 1fr 1fr;
  }

  .viewer-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .viewer-card.size-sm {
    grid-column: span 2;
  }

  .viewer-card.size-md {
    grid-column: span 3;
  }

  .viewer-card.size-lg {
    grid-column: span 6;
  }
}

@media (min-width: 1060px) {
  .viewer-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .viewer-card.size-sm {
    grid-column: span 3;
  }

  .viewer-card.size-md {
    grid-column: span 4;
  }

  .viewer-card.size-lg {
    grid-column: span 6;
  }

  .viewer-grid.focus-mode {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .viewer-grid.focus-mode .viewer-card.is-focused {
    grid-column: 1 / -1;
  }
}