:root, html.light {
    --surface: #f8fafc;
    --surface-container-lowest: #ffffff;
    --surface-container-low: #f1f5f9;
    --surface-container: #e2e8f0;
    --surface-container-high: #cbd5e1;
    --surface-container-highest: #94a3b8;
    --on-surface: #0f172a;
    --on-surface-variant: #475569;
    --outline-variant: #e2e8f0;
    --outline: #94a3b8;
    --primary: #3b82f6;
    --secondary: #8b5cf6;
    --tertiary: #ec4899;
}

html.dark {
    --surface: #020617;
    --surface-container-lowest: #000000;
    --surface-container-low: #0f172a;
    --surface-container: #1e293b;
    --surface-container-high: #334155;
    --surface-container-highest: #475569;
    --on-surface: #f8fafc;
    --on-surface-variant: #94a3b8;
    --outline-variant: #1e293b;
    --outline: #334155;
    --primary: #3b82f6;
    --secondary: #8b5cf6;
    --tertiary: #ec4899;
}

.glass-nav {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}
.glass-card {
    background: rgba(var(--surface-container-lowest), 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--outline-variant);
}
html.dark .glass-card {
    background: rgba(30, 41, 59, 0.4);
}
.primary-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    background-size: 200% 200%;
    animation: gradientMove 5s ease infinite;
}
@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Glowing Orbs */
.glowing-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 0;
    opacity: 0.3;
    animation: float 10s infinite ease-in-out alternate;
    pointer-events: none;
}
.orb-1 {
    width: 300px;
    height: 300px;
    background: var(--primary);
    top: -100px;
    left: -100px;
}
.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--secondary);
    bottom: 20%;
    right: -150px;
    animation-delay: -5s;
}
.orb-3 {
    width: 250px;
    height: 250px;
    background: var(--tertiary);
    top: 40%;
    left: 20%;
    animation-duration: 15s;
}
@keyframes float {
    0% { transform: translateY(0) scale(1); }
    100% { transform: translateY(30px) scale(1.1); }
}

.loader-shimmer {
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}