:root {
    /* Color Palette - Cyber Minimalist */
    --bg-dark: #050508;
    --bg-gradient: radial-gradient(circle at center, #11111a 0%, #050508 100%);
    --primary-glow: rgba(0, 240, 255, 0.6);
    --secondary-glow: rgba(188, 19, 254, 0.6);
    --accent: #00f0ff;
    --accent-hover: #bc13fe;
    --text-main: #ffffff;
    --text-muted: #8e8e9f;
    --glass-bg: rgba(20, 20, 30, 0.4);
    --glass-border: rgba(255, 255, 255, 0.08);
    
    /* Timings */
    --transition-slow: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    --transition-fast: 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}

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

body {
    background: var(--bg-dark);
    background-image: var(--bg-gradient);
    color: var(--text-main);
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
    overflow: hidden;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Background Canvas */
#bg-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
    opacity: 0.6;
}

/* Controls (Mute/Unmute) */
.controls {
    position: absolute;
    bottom: 30px;
    right: 30px;
    z-index: 50;
}

.glass-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--text-muted);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
}

.glass-btn:hover {
    color: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 15px var(--primary-glow);
    transform: scale(1.1);
}

/* Main Container */
.portal-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
    perspective: 1000px;
}

/* Center Hub */
.center-hub {
    position: absolute;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 20;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.5), inset 0 0 20px rgba(255, 255, 255, 0.05);
    transition: transform var(--transition-slow), box-shadow var(--transition-slow);
    cursor: pointer;
    animation: pulse-glow 4s infinite alternate;
}

.center-hub:hover {
    transform: scale(1.05) translateZ(20px);
    box-shadow: 0 0 50px var(--primary-glow), inset 0 0 20px rgba(0, 240, 255, 0.2);
    border-color: rgba(0, 240, 255, 0.4);
}

@keyframes pulse-glow {
    0% { box-shadow: 0 0 30px rgba(0, 240, 255, 0.1), inset 0 0 10px rgba(255, 255, 255, 0.02); }
    100% { box-shadow: 0 0 50px rgba(188, 19, 254, 0.2), inset 0 0 20px rgba(255, 255, 255, 0.05); }
}

.hub-glow {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: conic-gradient(from 0deg, transparent 0%, var(--accent) 25%, transparent 50%, var(--accent-hover) 75%, transparent 100%);
    opacity: 0.15;
    animation: rotate 10s linear infinite;
    pointer-events: none;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hub-logo {
    width: 70%;
    height: auto;
    object-fit: contain;
    z-index: 2;
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.2));
    transition: filter var(--transition-fast);
}

.center-hub:hover .hub-logo {
    filter: drop-shadow(0 0 15px var(--accent));
}

.hub-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 2px;
    background: linear-gradient(to right, var(--accent), var(--text-main));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    z-index: 2;
}

/* Orbiting Wrapper */
.orbit-wrapper {
    position: absolute;
    width: 600px;
    height: 600px;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 15;
    pointer-events: none; /* Let clicks pass through to background */
}

/* Link Cards */
.link-card {
    position: absolute;
    width: 220px;
    padding: 16px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    text-decoration: none;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 12px;
    pointer-events: auto; /* Re-enable clicks */
    transition: all var(--transition-slow);
    opacity: 0;
    transform-origin: center center;
    overflow: hidden;

    /* CSS variables to prevent transform clash between JS and CSS */
    --base-x: 0px;
    --base-y: 0px;
    --px: 0px;
    --py: 0px;
    --hover-y: 0px;
    --scale: 0;
    transform: translate(calc(var(--base-x) + var(--px)), calc(var(--base-y) + var(--py) + var(--hover-y))) scale(var(--scale));
}

/* Enter Animation for Cards */
.link-card.visible {
    opacity: 1;
}

.link-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: skewX(-20deg);
    transition: left 0.7s ease;
}

.link-card:hover::before {
    left: 150%;
}

.link-card:hover {
    background: rgba(30, 30, 45, 0.6);
    border-color: var(--accent);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 20px var(--primary-glow);
    --scale: 1.08;
    --hover-y: -5px;
    z-index: 30;
}

/* Hover color variation for even cards */
.link-card:nth-child(even):hover {
    border-color: var(--accent-hover);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 20px var(--secondary-glow);
}

.card-icon {
    font-size: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    transition: transform var(--transition-fast), background var(--transition-fast);
}

.link-card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
    background: rgba(255, 255, 255, 0.1);
}

.card-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.card-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.card-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.3;
}

.link-card:hover .card-title {
    color: var(--accent);
    text-shadow: 0 0 8px rgba(0, 240, 255, 0.4);
}

.link-card:nth-child(even):hover .card-title {
    color: var(--accent-hover);
    text-shadow: 0 0 8px rgba(188, 19, 254, 0.4);
}

/* Initial Loading Overlay */
#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--bg-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.8s ease;
}

.loader-circle {
    width: 50px;
    height: 50px;
    border: 3px solid transparent;
    border-top-color: var(--accent);
    border-bottom-color: var(--accent-hover);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .orbit-wrapper {
        width: 100%;
        height: 100%;
        flex-direction: column;
        align-items: center;
        gap: 15px;
        position: static;
        margin-top: 220px;
        pointer-events: auto;
        padding-bottom: 80px;
    }
    
    .center-hub {
        width: 140px;
        height: 140px;
        top: 40px;
    }
    
    .link-card {
        position: static;
        width: 90%;
        max-width: 320px;
        opacity: 1; /* Override JS opacity on mobile */
        transform: none !important; /* Override JS positioning */
        --scale: 1;
        --px: 0px;
        --py: 0px;
        --hover-y: 0px;
    }
    
    .link-card:hover {
        transform: translateY(-3px) scale(1.02) !important;
    }
    
    .portal-container {
        flex-direction: column;
        justify-content: flex-start;
        overflow-y: auto;
        padding-top: 20px;
    }
    
    body {
        overflow-y: auto;
    }
}