:root {
  color-scheme: dark;
  --bg: #0f0f10;
  --panel: #18181b;
  --card: #1f1f24;
  --accent: #ff2d55;
  --muted: #a0a0b0;
  --text: #f5f5f7;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: "Inter", system-ui, sans-serif;
}

body {
  background: var(--bg);
  color: var(--text);
}

.app {
  min-height: 100vh;
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  border-bottom: 1px solid #222;
  position: sticky;
  top: 0;
  background: rgba(15, 15, 16, 0.95);
  backdrop-filter: blur(6px);
  z-index: 5;
}

.logo {
  font-weight: 700;
  font-size: 20px;
}

.logo span {
  color: var(--accent);
}

.search {
  display: flex;
  flex: 1;
  max-width: 520px;
  margin: 0 24px;
}

.search input {
  flex: 1;
  background: var(--panel);
  border: 1px solid #2f2f36;
  border-radius: 999px 0 0 999px;
  padding: 10px 16px;
  color: var(--text);
}

.search button {
  border: none;
  background: var(--accent);
  color: white;
  padding: 10px 18px;
  border-radius: 0 999px 999px 0;
  cursor: pointer;
}

.actions {
  display: flex;
  gap: 12px;
}

.ghost {
  background: transparent;
  border: 1px solid #2f2f36;
  color: var(--text);
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
}

.layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  padding: 24px 32px 48px;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.sidebar nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 8px;
}

.sidebar nav a.active,
.sidebar nav a:hover {
  background: var(--card);
  color: var(--text);
}

.sidebar section {
  background: var(--panel);
  padding: 16px;
  border-radius: 12px;
  display: grid;
  gap: 8px;
}

.sidebar section h4 {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 4px;
}

.sidebar label {
  display: flex;
  gap: 8px;
  font-size: 14px;
  color: var(--text);
}

.content {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.player-panel {
  background: var(--panel);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.player-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.quality-info {
  display: flex;
  gap: 16px;
  color: var(--muted);
  font-size: 14px;
}

.player-window {
  margin-top: 20px;
  display: grid;
  gap: 16px;
}

.video-surface {
  background: #050506;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  padding-top: 56.25%;
}

.video-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(120deg, #1f1f24, #0d0d0f);
}

.play-icon {
  font-size: 54px;
  background: rgba(0, 0, 0, 0.5);
  padding: 16px 22px;
  border-radius: 50%;
}

.player-controls {
  display: grid;
  gap: 12px;
}

.timeline {
  position: relative;
}

.timeline input[type="range"] {
  width: 100%;
}

.buffer-bar {
  position: absolute;
  height: 4px;
  background: #2a2a30;
  width: 100%;
  bottom: 6px;
  border-radius: 4px;
  overflow: hidden;
}

.buffer-bar span {
  display: block;
  height: 100%;
  width: 0;
  background: var(--accent);
}

.control-row {
  display: grid;
  grid-template-columns: auto 200px 1fr;
  gap: 16px;
  align-items: center;
}

.control-row button {
  padding: 8px 14px;
  border-radius: 8px;
  border: none;
  background: var(--accent);
  color: white;
  cursor: pointer;
}

.quality-select {
  display: grid;
  gap: 6px;
  font-size: 14px;
}

.quality-select select {
  background: var(--card);
  border: 1px solid #2f2f36;
  color: var(--text);
  padding: 8px;
  border-radius: 8px;
}

.segment-info {
  display: grid;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}

.segment-list {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.segment {
  padding: 4px 8px;
  background: #22222a;
  border-radius: 999px;
  font-size: 11px;
  color: var(--text);
}

.segment.active {
  background: var(--accent);
  color: white;
}

.feed {
  display: grid;
  gap: 16px;
}

.feed-header p {
  color: var(--muted);
  font-size: 14px;
}

.feed-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.video-card {
  background: var(--card);
  border-radius: 16px;
  overflow: hidden;
  display: grid;
}

.video-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
}

.video-card .meta {
  padding: 12px;
  display: grid;
  gap: 6px;
}

.video-card .meta span {
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .control-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .top-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .search {
    margin: 0;
  }
}