:root {
    --primary: #e10600;
    --primary-hover: #ff1a14;
    --glass: rgba(0, 0, 0, 0.65);
    --text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; }

body { 
    background: #000; 
    color: #fff; 
    overflow: hidden; 
    height: 100vh; 
    display: flex; 
    flex-direction: column; 
}

#bgVideo, #bgImage {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: blur(8px) brightness(0.4);
    z-index: -2;
    transition: opacity 1s ease-in-out;
    display: none;
}

.overlay {
    position: fixed;
    inset: 0;
    background: radial-gradient(circle, transparent 20%, rgba(0,0,0,0.85) 100%);
    z-index: -1;
}

header { padding: 20px 30px; position: relative; z-index: 10; text-align: center; }
header img { width: 90px; filter: drop-shadow(var(--text-shadow)); }

.notice {
    position: absolute;
    top: 35%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--glass);
    padding: 15px 30px;
    border-radius: 50px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    z-index: 5;
    transition: opacity 0.5s;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(-50%, -50%); }
    50% { transform: translate(-50%, -55%); }
}

.panel {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(15, 15, 15, 0.7);
    padding: 25px;
    border-radius: 24px;
    text-align: center;
    width: 90%;
    max-width: 420px;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.15);
    box-shadow: 0 15px 35px rgba(0,0,0,0.6);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    font-size: 12px;
    font-weight: 600;
}

.live-tag {
    background: var(--primary);
    padding: 4px 10px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.pulse-dot {
    width: 8px; height: 8px;
    background: white;
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(255,255,255,0.7); }
    70% { box-shadow: 0 0 0 6px rgba(255,255,255,0); }
    100% { box-shadow: 0 0 0 0 rgba(255,255,255,0); }
}

.clock { font-family: monospace; font-size: 14px; color: #aaa; }

.track-info { margin: 15px 0; }
.track { font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.artist { font-size: 15px; opacity: 0.8; }

.visualizer {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: 4px;
    height: 30px;
    margin: 10px 0;
}

.visualizer .bar {
    width: 6px;
    background: var(--primary);
    border-radius: 3px;
    animation: eq 1s ease-in-out infinite alternate;
}

.visualizer .bar:nth-child(1) { height: 30%; animation-delay: 0.1s; }
.visualizer .bar:nth-child(2) { height: 60%; animation-delay: 0.3s; }
.visualizer .bar:nth-child(3) { height: 100%; animation-delay: 0s; }
.visualizer .bar:nth-child(4) { height: 80%; animation-delay: 0.2s; }
.visualizer .bar:nth-child(5) { height: 40%; animation-delay: 0.4s; }

@keyframes eq { 0% { height: 10%; } 100% { height: 100%; } }

button {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

.share-btn {
    margin-top: 15px;
    background: #1DB954;
    animation: fadeIn 1s ease;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.hidden { display: none !important; }

.feedback-link {
    display: inline-block;
    margin-top: 18px;
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    font-size: 12px;
}