:root {
  --brand-green: #4db894;
  --brand-blue: #2b8cef;
  --brand-gradient: linear-gradient(135deg, #4db894, #2b8cef);
  --brand-green-rgb: 77, 184, 148;
  --brand-blue-rgb:  43, 140, 239;
  --bg-dark: #0d1d24;
  --bg-darker: #08131a;
  --bg-panel: #112832;
  --text-primary: #ffffff;
  --text-secondary: rgba(255,255,255,0.7);
  --text-muted: rgba(255,255,255,0.45);
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.15);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg-darker);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

.iptv-app {
  display: flex;
  width: 100vw; height: 100vh;
}

.sidebar {
  width: 320px; flex-shrink: 0;
  background: var(--bg-dark);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  transition: transform 0.3s;
}

.sb-header {
  padding: 18px 16px;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border);
}
.sb-brand { display: flex; align-items: center; gap: 10px; }
.sb-brand img { width: 32px; height: 32px; border-radius: 8px; background: var(--brand-gradient); padding: 4px; }
.sb-brand h3 { font-size: 16px; font-weight: 700; letter-spacing: 0.5px; }
.sb-brand span { font-size: 11px; color: var(--text-muted); display: block; margin-top: 1px; }
.sb-close { display: none; background: none; border: none; color: var(--text-secondary); font-size: 22px; cursor: pointer; padding: 4px; }

.sb-source { padding: 14px 16px; border-bottom: 1px solid var(--border); }
.sb-source-title { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-secondary); margin-bottom: 10px; font-weight: 600; }
.sb-source-select {
  width: 100%; padding: 9px 12px;
  background: var(--bg-panel); color: var(--text-primary);
  border: 1px solid var(--border-strong); border-radius: 8px;
  font-size: 13px; margin-bottom: 10px; cursor: pointer;
}
.sb-source-select:focus { outline: none; border-color: var(--brand-blue); }
.sb-source-input { display: flex; gap: 8px; }
.sb-source-input input {
  flex: 1; padding: 9px 12px;
  background: var(--bg-panel); color: var(--text-primary);
  border: 1px solid var(--border-strong); border-radius: 8px;
  font-size: 12px;
}
.sb-source-input input:focus { outline: none; border-color: var(--brand-blue); }
.sb-source-input button {
  background: var(--brand-gradient);
  border: none; color: #fff;
  width: 36px; border-radius: 8px;
  cursor: pointer; font-size: 16px;
  display: flex; align-items: center; justify-content: center;
}

.sb-search {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px; border-bottom: 1px solid var(--border);
  position: relative;
}
.sb-search i:first-child { position: absolute; left: 28px; color: var(--text-muted); font-size: 15px; pointer-events: none; }
.sb-search input {
  width: 100%; padding: 9px 28px 9px 36px;
  background: var(--bg-panel); color: var(--text-primary);
  border: 1px solid var(--border-strong); border-radius: 20px;
  font-size: 13px;
}
.sb-search input:focus { outline: none; border-color: var(--brand-blue); }
.sb-search button {
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; font-size: 16px; padding: 4px;
}
.sb-search button:hover { color: #fff; }

.sb-list {
  flex: 1; overflow-y: auto;
  padding: 4px 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}
.sb-list::-webkit-scrollbar { width: 6px; }
.sb-list::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }

.sb-empty { text-align: center; padding: 40px 20px; color: var(--text-muted); }
.sb-empty i { font-size: 40px; margin-bottom: 12px; display: block; opacity: 0.6; }
.sb-empty p { font-size: 13px; line-height: 1.7; }

.channel-group { margin-bottom: 2px; }
.group-header {
  padding: 10px 16px 6px;
  font-size: 11px; font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 1px;
  display: flex; align-items: center; gap: 6px;
}
.group-header::before {
  content: ''; width: 3px; height: 12px;
  background: var(--brand-gradient); border-radius: 2px;
}
.channel-item {
  padding: 10px 16px 10px 22px;
  font-size: 13px; color: var(--text-secondary);
  cursor: pointer;
  display: flex; align-items: center; justify-content: space-between;
  transition: background 0.15s, color 0.15s;
  border-left: 3px solid transparent;
}
.channel-item:hover {
  background: rgba(var(--brand-blue-rgb), 0.1);
  color: #fff;
}
.channel-item.active {
  background: rgba(var(--brand-blue-rgb), 0.18);
  color: #fff;
  border-left-color: var(--brand-blue);
}
.channel-item.active::after {
  content: '\f04c'; font-family: remixicon; font-size: 16px; color: var(--brand-green);
}
.channel-item .ch-quality {
  font-size: 10px; padding: 2px 6px;
  background: rgba(255,255,255,0.1); border-radius: 3px;
  color: var(--text-muted);
}
.channel-item .ci-sources {
  font-size: 10px; padding: 1px 6px; border-radius: 10px;
  background: rgba(var(--brand-green-rgb), 0.2); color: var(--brand-green);
  min-width: 18px; text-align: center; font-weight: 700;
}
.channel-item.active .ch-quality { background: rgba(var(--brand-green-rgb), 0.25); color: var(--brand-green); }

.sb-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
}
.sb-home {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  color: var(--text-secondary); text-decoration: none;
  font-size: 13px; font-weight: 600;
  transition: all 0.2s;
}
.sb-home:hover { background: var(--brand-gradient); color: #fff; border-color: transparent; }

.player-area {
  flex: 1; display: flex; flex-direction: column;
  min-width: 0;
  position: relative;
}

.top-bar {
  height: 56px; flex-shrink: 0;
  background: rgba(13,29,36,0.95); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px;
  padding: 0 16px;
}
.menu-btn {
  display: none;
  background: none; border: none; color: var(--text-secondary);
  font-size: 22px; cursor: pointer; padding: 4px;
}
.now-playing {
  flex: 1; font-size: 14px; color: var(--text-secondary);
  display: flex; align-items: center; gap: 8px; min-width: 0; overflow: hidden;
}
.now-playing i { color: var(--brand-green); font-size: 18px; flex-shrink: 0; }
.now-playing span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.top-actions { display: flex; gap: 4px; }
.top-btn {
  width: 36px; height: 36px;
  background: none; border: none; color: var(--text-secondary);
  font-size: 18px; cursor: pointer; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s, color 0.15s;
}
.top-btn:hover { background: rgba(255,255,255,0.08); color: #fff; }

.video-wrap {
  flex: 1; position: relative; background: #000; overflow: hidden;
  min-height: 0;
}
#videoPlayer {
  width: 100%; height: 100%; object-fit: contain;
  background: #000;
}
.overlay {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, rgba(13,29,36,0.95), rgba(8,19,26,0.9));
  transition: opacity 0.3s;
}
.overlay.hidden { opacity: 0; pointer-events: none; }
.overlay i { font-size: 64px; color: var(--brand-green); margin-bottom: 16px; opacity: 0.8; }
.overlay p { font-size: 20px; font-weight: 700; margin-bottom: 8px; background: var(--brand-gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.overlay span { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

.buffering {
  position: absolute; inset: 0;
  display: none; flex-direction: column; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.5);
  gap: 12px;
}
.buffering.active { display: flex; }
.buffering .spinner {
  width: 40px; height: 40px;
  border: 3px solid rgba(255,255,255,0.15);
  border-top-color: var(--brand-green);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.buffering span { font-size: 13px; color: var(--text-secondary); }
@keyframes spin { to { transform: rotate(360deg); } }

.bottom-info {
  height: 36px; flex-shrink: 0;
  background: var(--bg-dark); border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px;
  font-size: 11px; color: var(--text-muted);
}
.info-item { display: flex; align-items: center; gap: 4px; }

@media (max-width: 768px) {
  .sidebar {
    position: fixed; top: 0; left: 0; bottom: 0;
    z-index: 200;
    transform: translateX(-100%);
    width: 88vw; max-width: 340px;
  }
  .sidebar.open { transform: translateX(0); }
  .sb-close { display: flex; align-items: center; justify-content: center; }
  .menu-btn { display: flex; align-items: center; justify-content: center; }
  .top-bar { height: 52px; padding: 0 12px; }
  .now-playing { font-size: 13px; }
  .bottom-info { display: none; }

}

.top-download-btn{background:#fff;color:#2b8cef;padding:7px 18px;border-radius:22px;font-size:14px;font-weight:600;text-decoration:none;border:1px solid rgba(43,140,239,.25);box-shadow:0 2px 10px rgba(0,0,0,.15);transition:all .15s;display:inline-flex;align-items:center;gap:4px;}
.top-download-btn:hover{background:#f0f7ff;transform:translateY(-1px);box-shadow:0 4px 16px rgba(0,0,0,.2);}
.top-download-btn:active{transform:translateY(0);box-shadow:0 1px 4px rgba(0,0,0,.15);}