/* ============================================
   MODERN BEAUTIFUL BACKGROUNDS
   ============================================ */

/* ===== OPTION 1: ANIMATED GRADIENT MESH (RECOMMENDED) ===== */
.modern-bg-gradient-mesh {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: linear-gradient(to bottom, #0f0f1e 0%, #1a1a2e 50%, #16213e 100%);
    overflow: hidden;
}

.modern-bg-gradient-mesh::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 20%, rgba(108, 99, 255, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(78, 205, 196, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 40% 60%, rgba(0, 217, 255, 0.10) 0%, transparent 40%),
        radial-gradient(circle at 70% 30%, rgba(108, 99, 255, 0.08) 0%, transparent 40%);
    animation: gradientShift 20s ease infinite;
}

@keyframes gradientShift {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    33% {
        transform: translate(5%, 5%) rotate(120deg);
    }
    66% {
        transform: translate(-5%, 5%) rotate(240deg);
    }
}

/* ===== OPTION 2: GEOMETRIC PATTERNS ===== */
.modern-bg-geometric {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background-color: #0f0f1e;
    background-image: 
        linear-gradient(30deg, rgba(108, 99, 255, 0.05) 12%, transparent 12.5%, transparent 87%, rgba(108, 99, 255, 0.05) 87.5%, rgba(108, 99, 255, 0.05)),
        linear-gradient(150deg, rgba(108, 99, 255, 0.05) 12%, transparent 12.5%, transparent 87%, rgba(108, 99, 255, 0.05) 87.5%, rgba(108, 99, 255, 0.05)),
        linear-gradient(30deg, rgba(108, 99, 255, 0.05) 12%, transparent 12.5%, transparent 87%, rgba(108, 99, 255, 0.05) 87.5%, rgba(108, 99, 255, 0.05)),
        linear-gradient(150deg, rgba(108, 99, 255, 0.05) 12%, transparent 12.5%, transparent 87%, rgba(108, 99, 255, 0.05) 87.5%, rgba(108, 99, 255, 0.05)),
        linear-gradient(60deg, rgba(78, 205, 196, 0.05) 25%, transparent 25.5%, transparent 75%, rgba(78, 205, 196, 0.05) 75%, rgba(78, 205, 196, 0.05)),
        linear-gradient(60deg, rgba(78, 205, 196, 0.05) 25%, transparent 25.5%, transparent 75%, rgba(78, 205, 196, 0.05) 75%, rgba(78, 205, 196, 0.05));
    background-size: 80px 140px;
    background-position: 0 0, 0 0, 40px 70px, 40px 70px, 0 0, 40px 70px;
    animation: geometricMove 30s linear infinite;
}

@keyframes geometricMove {
    0% {
        background-position: 0 0, 0 0, 40px 70px, 40px 70px, 0 0, 40px 70px;
    }
    100% {
        background-position: 80px 140px, 80px 140px, 120px 210px, 120px 210px, 80px 140px, 120px 210px;
    }
}

/* ===== OPTION 3: GLOWING GRID ===== */
.modern-bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background-color: #0f0f1e;
    background-image: 
        linear-gradient(rgba(108, 99, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(108, 99, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    background-position: center center;
}

.modern-bg-grid::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(108, 99, 255, 0.15) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    animation: gridPulse 4s ease-in-out infinite;
}

@keyframes gridPulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.5;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.8;
    }
}

/* ===== OPTION 4: FLOATING ORBS (PREMIUM) ===== */
.modern-bg-orbs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: linear-gradient(135deg, #0f0f1e 0%, #1a1a2e 50%, #16213e 100%);
    overflow: hidden;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    mix-blend-mode: screen;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #6C63FF 0%, transparent 70%);
    top: -200px;
    left: -200px;
    animation: orbFloat1 25s ease-in-out infinite;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #4ECDC4 0%, transparent 70%);
    top: 50%;
    right: -250px;
    animation: orbFloat2 30s ease-in-out infinite;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, #00D9FF 0%, transparent 70%);
    bottom: -175px;
    left: 30%;
    animation: orbFloat3 20s ease-in-out infinite;
}

@keyframes orbFloat1 {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(150px, 150px);
    }
}

@keyframes orbFloat2 {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(-150px, -100px);
    }
}

@keyframes orbFloat3 {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(100px, -150px);
    }
}

/* ===== OPTION 5: AURORA BOREALIS EFFECT ===== */
.modern-bg-aurora {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: #0f0f1e;
    overflow: hidden;
}

.aurora-layer {
    position: absolute;
    width: 200%;
    height: 100%;
    top: 0;
    left: -50%;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(108, 99, 255, 0.1) 25%,
        rgba(78, 205, 196, 0.15) 50%,
        rgba(0, 217, 255, 0.1) 75%,
        transparent 100%
    );
    animation: auroraMove 15s linear infinite;
    filter: blur(40px);
}

.aurora-layer:nth-child(2) {
    animation-duration: 20s;
    animation-direction: reverse;
    opacity: 0.6;
}

.aurora-layer:nth-child(3) {
    animation-duration: 25s;
    opacity: 0.4;
}

@keyframes auroraMove {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(50%);
    }
}

/* ===== OPTION 6: SCANLINE TECH EFFECT ===== */
.modern-bg-scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: linear-gradient(to bottom, #0f0f1e 0%, #1a1a2e 100%);
}

.modern-bg-scanlines::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 200%;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(108, 99, 255, 0.03) 2px,
        rgba(108, 99, 255, 0.03) 4px
    );
    animation: scanlineMove 10s linear infinite;
    pointer-events: none;
}

.modern-bg-scanlines::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 800px;
    height: 800px;
    background: radial-gradient(
        circle,
        rgba(78, 205, 196, 0.1) 0%,
        transparent 70%
    );
    transform: translate(-50%, -50%);
    animation: scanPulse 3s ease-in-out infinite;
}

@keyframes scanlineMove {
    0% {
        transform: translateY(-50%);
    }
    100% {
        transform: translateY(0);
    }
}

@keyframes scanPulse {
    0%, 100% {
        opacity: 0.3;
    }
    50% {
        opacity: 0.6;
    }
}

/* ===== OPTION 7: PERLIN NOISE INSPIRED ===== */
.modern-bg-noise {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: 
        radial-gradient(circle at 20% 30%, #1a1a3e 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, #1e2a4a 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, #1a2642 0%, transparent 50%),
        linear-gradient(135deg, #0f0f1e 0%, #1a1a2e 100%);
    animation: noiseMove 30s ease-in-out infinite;
}

.modern-bg-noise::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.05'/%3E%3C/svg%3E");
    opacity: 0.4;
}

@keyframes noiseMove {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* ===== MOBILE OPTIMIZATIONS ===== */
@media (max-width: 768px) {
    .modern-bg-gradient-mesh::before,
    .modern-bg-geometric,
    .orb,
    .aurora-layer {
        animation-duration: 40s; /* Slower on mobile for performance */
    }
    
    .orb {
        filter: blur(60px); /* Less blur on mobile */
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    .modern-bg-gradient-mesh::before,
    .modern-bg-geometric,
    .modern-bg-grid::before,
    .orb,
    .aurora-layer,
    .modern-bg-scanlines::before,
    .modern-bg-scanlines::after,
    .modern-bg-noise {
        animation: none !important;
    }
}

/* ===== OPTION 8: MINIMAL DOT MATRIX (FAST) ===== */
.modern-bg-dots {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background-color: #0f0f1e;
    overflow: hidden;
}

.modern-bg-dots::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(rgba(108, 99, 255, 0.25) 2px, transparent 2px);
    background-size: 35px 35px;
    background-position: center center;
    pointer-events: none;
    z-index: 10;
}