:root {
    --primary: #007bff;
    --primary-dark: #0056b3;
    --bg-dark: #050a14;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--bg-dark);
    background-image:
        radial-gradient(circle at 0% 0%, rgba(0, 123, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 100% 100%, rgba(0, 123, 255, 0.05) 0%, transparent 50%);
    min-height: 100vh;
    color: #e2e8f0;
}

.glass-panel {
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.premium-card {
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.premium-card:hover {
    border-color: rgba(0, 123, 255, 0.3);
}

input[type="range"] {
    -webkit-appearance: none;
    background: rgba(255, 255, 255, 0.1);
    height: 6px;
    border-radius: 3px;
    appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 20px;
    width: 20px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 0 15px rgba(0, 123, 255, 0.5);
    border: 2px solid white;
}

.led-grid {
    display: grid;
    gap: 4px;
}

.cabinet {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.loader {
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Scrollbar Style */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.02);
}
::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.2);
}