:root {
  color-scheme: dark;
  --bg: #0b0d10;
  --panel: #14171b;
  --panel-2: #1b1f24;
  --border: #262b31;
  --text: #e8eaed;
  --muted: #8b939d;
  --accent: #ff9d2e;
  --accent-dim: #7a5323;
  --danger: #ff6b6b;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  padding-bottom: 3rem;
}

.topbar {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 1.25rem 1.5rem 1rem;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 0.5rem; }
.brand-mark { font-size: 1.4rem; color: var(--accent); }
.brand-name { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.01em; }
.brand-sub { color: var(--muted); font-size: 0.8rem; }

main {
  max-width: 860px;
  margin: 0 auto;
  padding: 1.5rem 1rem 0;
}

.url-panel { margin-bottom: 1rem; }

#fetch-form {
  display: flex;
  gap: 0.5rem;
}

input[type="text"] {
  flex: 1;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius);
  font-size: 1rem;
  min-width: 0;
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
}

button {
  font-family: inherit;
  font-size: 0.95rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
}

#fetch-btn, .download-btn {
  background: var(--accent);
  color: #1a1200;
  font-weight: 700;
  padding: 0.75rem 1.25rem;
  white-space: nowrap;
}

#fetch-btn:hover, .download-btn:hover { filter: brightness(1.08); }
#fetch-btn:disabled { opacity: 0.6; cursor: default; }

.link-btn {
  background: none;
  color: var(--muted);
  padding: 0.5rem 0;
  font-size: 0.85rem;
}
.link-btn:hover { color: var(--text); }

.browser-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
  margin-bottom: 1.25rem;
}

#browser-form {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

#browser-form input[type="text"] { flex: 1; min-width: 180px; padding: 0.5rem 0.75rem; }

#browser-form button {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.5rem 0.9rem;
}

.popup-toggle {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  color: var(--muted);
  white-space: nowrap;
}

#open-new-tab {
  color: var(--muted);
  font-size: 0.8rem;
  text-decoration: none;
  white-space: nowrap;
}
#open-new-tab:hover { color: var(--accent); }

.browser-hint {
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.4;
  margin: 0.6rem 0;
}

#browser-frame {
  width: 100%;
  height: 480px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.hidden { display: none !important; }

.status {
  padding: 0.9rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.92rem;
}
.status.loading { background: var(--panel); color: var(--muted); }
.status.error { background: #2a1414; color: var(--danger); border: 1px solid #4a2020; }

.result {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.result-header {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

#thumb {
  width: 200px;
  max-width: 40%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: 8px;
  background: var(--panel-2);
  flex-shrink: 0;
}

.result-meta { min-width: 0; }
#video-title {
  margin: 0 0 0.4rem;
  font-size: 1.15rem;
  line-height: 1.35;
  word-break: break-word;
}
.result-sub { color: var(--muted); font-size: 0.9rem; margin-bottom: 0.4rem; }
#video-source { color: var(--accent); font-size: 0.85rem; text-decoration: none; }
#video-source:hover { text-decoration: underline; }

.tabs {
  display: flex;
  gap: 0.25rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}

.tab-btn {
  background: none;
  color: var(--muted);
  padding: 0.6rem 1rem;
  font-weight: 600;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab-btn.active { color: var(--text); border-bottom-color: var(--accent); }

.tab-pane { display: none; }
.tab-pane.active { display: block; }

.format-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.format-table th {
  text-align: left;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.4rem 0.5rem;
  border-bottom: 1px solid var(--border);
}
.format-table td {
  padding: 0.55rem 0.5rem;
  border-bottom: 1px solid var(--border);
}
.format-table tr:last-child td { border-bottom: none; }
.format-table .size-est::after { content: " ~"; color: var(--muted); }

.row-download-btn {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
}
.row-download-btn:hover { border-color: var(--accent); color: var(--accent); }

.audio-primary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.9rem 1rem;
  margin-bottom: 1rem;
}
.muted { color: var(--muted); font-size: 0.85rem; }

@media (max-width: 480px) {
  .result-header { flex-direction: column; }
  #thumb { width: 100%; max-width: 100%; }
}