/* YT Plus Web App — Premium Style System */
:root {
  --primary: #ff0000;
  --primary-hover: #cc0000;
  --bg-deep: #0a0a0a;
  --bg-card: #161616;
  --bg-input: #1a1a1a;
  --text-main: #f1f1f1;
  --text-dim: #888;
  --border: #2a2a2a;
  --radius: 12px;
  --shadow: 0 10px 30px rgba(0,0,0,0.5);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg-deep);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* --- Header --- */
header {
  background: linear-gradient(90deg, #ff0000, #800000);
  padding: 20px 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  position: sticky;
  top: 0;
  z-index: 100;
}
.logo { font-size: 24px; font-weight: 800; letter-spacing: -0.5px; }
.logo span { font-weight: 300; opacity: 0.8; }
.subdomain { font-size: 12px; background: rgba(0,0,0,0.2); padding: 4px 10px; border-radius: 20px; color: rgba(255,255,255,0.7); }

/* --- Main Layout --- */
main {
  flex: 1;
  max-width: 900px;
  margin: 40px auto;
  padding: 0 20px;
  width: 100%;
}

.hero { text-align: center; margin-bottom: 40px; }
.hero h1 { font-size: 32px; margin-bottom: 10px; font-weight: 800; }
.hero p { color: var(--text-dim); font-size: 16px; }

/* --- Search Bar --- */
.search-container {
  background: var(--bg-card);
  padding: 10px;
  border-radius: 50px;
  display: flex;
  gap: 10px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  margin-bottom: 30px;
  transition: border-color 0.3s;
}
.search-container:focus-within { border-color: var(--primary); }
.search-container input {
  flex: 1;
  background: transparent;
  border: none;
  font-size: 16px;
  color: #fff;
  padding: 10px 25px;
  outline: none;
  font-family: inherit;
}
.search-container button {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 40px;
  padding: 10px 30px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s;
}
.search-container button:hover { background: var(--primary-hover); }

/* --- Content Area --- */
#video-display { display: none; animation: fadeIn 0.4s ease-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 24px;
}
@media (max-width: 768px) { .video-card { grid-template-columns: 1fr; } }

.thumb-box { position: relative; border-radius: 8px; overflow: hidden; }
.thumb-box img { width: 100%; display: block; aspect-ratio: 16/9; object-fit: cover; }

.info-box h2 { font-size: 20px; line-height: 1.4; margin-bottom: 15px; }

/* --- Options & Tabs --- */
.tabs { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tab-btn {
  padding: 10px 20px;
  background: none;
  border: none;
  color: var(--text-dim);
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }

.panel { display: none; }
.panel.active { display: block; }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.dl-btn {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  color: #fff;
  cursor: pointer;
  text-align: left;
  transition: all 0.2s;
}
.dl-btn:hover { border-color: var(--primary); background: #222; }
.dl-btn strong { display: block; font-size: 14px; margin-bottom: 3px; }
.dl-btn span { font-size: 11px; color: var(--text-dim); }

/* --- Clip Logic --- */
.clip-row { display: flex; gap: 10px; margin-bottom: 15px; }
.field { flex: 1; }
.field label { font-size: 11px; color: var(--text-dim); margin-bottom: 5px; display: block; }
.field input {
  width: 100%; background: var(--bg-input); border: 1px solid var(--border);
  padding: 10px; border-radius: 8px; color: #fff; text-align: center;
}

/* --- Status & Footer --- */
.status-toast {
  position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%);
  background: #333; padding: 12px 24px; border-radius: 50px;
  font-size: 14px; display: none; z-index: 1000; box-shadow: var(--shadow);
}
.status-toast.active { display: block; }
.status-toast.error { background: #800000; color: #fff; }
.status-toast.success { background: #1a3a1a; color: #4caf50; }

footer { padding: 40px 0; text-align: center; color: var(--text-dim); font-size: 12px; }