:root {
    --bg-main: #0b0f19;
    --bg-card: #131b2e;
    --bg-card-hover: #1e293b;
    --accent: #3b82f6;
    --accent-glow: rgba(59, 130, 246, 0.4);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: #1e293b;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.app-container {
    width: 100%;
    max-width: 1200px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid var(--border);
    background: rgba(19, 27, 46, 0.8);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 8px #10b981;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); opacity: 0.8; }
    50% { transform: scale(1.2); opacity: 1; box-shadow: 0 0 12px #10b981; }
    100% { transform: scale(0.95); opacity: 0.8; }
}

/* Main Content Layout (Adaptif Grid) */
.main-content {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 25px;
    padding: 30px;
}

@media (max-width: 900px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

/* Player Area */
.player-wrapper {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.video-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background: #000;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border);
}

.video-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.stream-info h2 {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--text-main);
}

.stream-info p {
    font-size: 0.9rem;
    color: var(--text-muted);
    word-break: break-all;
}

/* Sidebar / Channel List dengan Scroll Dinamis */
.sidebar {
    background: rgba(11, 15, 25, 0.5);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    
    /* Batas tinggi untuk memuat sekitar 3 channel. Lebih dari ini akan muncul scroll */
    max-height: 290px; 
    overflow-y: auto;
    scroll-behavior: smooth;
}

/* Kustomisasi Scrollbar agar rapi */
.sidebar::-webkit-scrollbar {
    width: 6px;
}
.sidebar::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 10px;
}
.sidebar::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 10px;
}
.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* Judul Sidebar (Sticky) */
.sidebar h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 10px;
    position: sticky;
    top: 0;
    background: #101625; /* Latar belakang senada agar teks tidak bertumpuk saat di-scroll */
    padding: 5px 0 10px 0;
    z-index: 10;
}

.channel-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Tombol Channel */
.channel-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-main);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s ease;
    text-align: left;
}

/* Info Icon dan Teks Channel */
.channel-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.channel-icon {
    width: 26px;
    height: 26px;
    object-fit: contain;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.05);
    padding: 2px;
}

/* Animasi dan Hover Tombol Channel */
.channel-btn i {
    color: var(--text-muted);
    font-size: 0.8rem;
    transition: color 0.25s ease;
}

.channel-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.channel-btn:hover i {
    color: var(--accent);
}

.channel-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 4px 15px var(--accent-glow);
    color: #fff;
}

.channel-btn.active i {
    color: #fff;
}