/* ============================================
   EFFETS PREMIUM - SITE HIGH-TECH À 1 MILLION
   ============================================ */

/* ===== FOND DE PARTICULES INTERACTIVES ===== */
.particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.particle-premium {
    position: absolute;
    width: 4px;
    height: 4px;
    background: radial-gradient(circle, var(--primary), transparent);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 15s infinite ease-in-out;
    filter: blur(1px);
}

@keyframes particleFloat {
    0% {
        transform: translate(0, 100vh) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translate(var(--tx), -100vh) scale(1.5);
        opacity: 0;
    }
}

/* ===== GRILLE CYBERPUNK ANIMÉE ===== */
.cyber-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.03;
    background-image: 
        linear-gradient(rgba(79, 118, 247, 0.5) 1px, transparent 1px),
        linear-gradient(90deg, rgba(79, 118, 247, 0.5) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% {
        transform: perspective(500px) rotateX(60deg) translateY(0);
    }
    100% {
        transform: perspective(500px) rotateX(60deg) translateY(50px);
    }
}

.dark-theme .cyber-grid {
    opacity: 0.08;
}

/* ===== EFFETS NÉON PREMIUM ===== */
.neon-border {
    position: relative;
    border: 2px solid transparent;
    background: linear-gradient(var(--bg-card), var(--bg-card)) padding-box,
                linear-gradient(135deg, var(--primary), #667eea, #764ba2) border-box;
    animation: neonPulse 3s ease-in-out infinite;
}

@keyframes neonPulse {
    0%, 100% {
        box-shadow: 
            0 0 5px var(--primary),
            0 0 10px var(--primary),
            0 0 20px var(--primary),
            inset 0 0 10px rgba(79, 118, 247, 0.1);
    }
    50% {
        box-shadow: 
            0 0 10px var(--primary),
            0 0 20px var(--primary),
            0 0 40px var(--primary),
            inset 0 0 20px rgba(79, 118, 247, 0.2);
    }
}

/* ===== TRANSITIONS LIQUIDES ===== */
.liquid-transition {
    transition: all 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.liquid-morph {
    transition: all 1s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* ===== EFFET HOLOGRAPHIQUE ===== */
.holographic {
    position: relative;
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.1) 0%,
        rgba(255, 255, 255, 0.05) 50%,
        rgba(255, 255, 255, 0.1) 100%
    );
    background-size: 200% 200%;
    animation: holographicShift 3s ease infinite;
}

.holographic::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        45deg,
        transparent 30%,
        rgba(79, 118, 247, 0.1) 50%,
        transparent 70%
    );
    animation: holographicScan 4s linear infinite;
    pointer-events: none;
}

@keyframes holographicShift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

@keyframes holographicScan {
    0% {
        transform: translateX(-100%) skewX(-15deg);
    }
    100% {
        transform: translateX(200%) skewX(-15deg);
    }
}

/* ===== GLOW INTERACTIF ===== */
.interactive-glow {
    position: relative;
    overflow: hidden;
}

.interactive-glow::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: radial-gradient(
        circle,
        rgba(79, 118, 247, 0.4) 0%,
        rgba(79, 118, 247, 0.2) 40%,
        transparent 70%
    );
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
    pointer-events: none;
    z-index: 0;
}

.interactive-glow:hover::after {
    width: 400px;
    height: 400px;
}

/* ===== STAGGER ANIMATIONS ===== */
.stagger-item {
    opacity: 0;
    transform: translateY(30px);
    animation: staggerFadeIn 0.6s ease forwards;
}

.stagger-item:nth-child(1) { animation-delay: 0.1s; }
.stagger-item:nth-child(2) { animation-delay: 0.2s; }
.stagger-item:nth-child(3) { animation-delay: 0.3s; }
.stagger-item:nth-child(4) { animation-delay: 0.4s; }
.stagger-item:nth-child(5) { animation-delay: 0.5s; }
.stagger-item:nth-child(6) { animation-delay: 0.6s; }

@keyframes staggerFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== EFFET DE VAGUE SUR HOVER ===== */
.wave-effect {
    position: relative;
    overflow: hidden;
}

.wave-effect::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(79, 118, 247, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease, opacity 0.6s ease;
    opacity: 0;
    pointer-events: none;
}

.wave-effect:hover::before {
    width: 300%;
    height: 300%;
    opacity: 1;
}

/* ===== BOUTONS PREMIUM ULTRA-MODERNES ===== */
.btn-premium {
    position: relative;
    padding: 1rem 2.5rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    border: none;
    border-radius: 50px;
    background: linear-gradient(135deg, var(--primary), #667eea);
    color: white;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    box-shadow: 
        0 4px 15px rgba(79, 118, 247, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-premium::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.7s ease;
}

.btn-premium:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 
        0 8px 30px rgba(79, 118, 247, 0.6),
        0 0 40px rgba(79, 118, 247, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-premium:hover::before {
    left: 100%;
}

.btn-premium:active {
    transform: translateY(-1px) scale(1.02);
}

/* Force les icônes en blanc */
.btn-premium svg {
    color: white !important;
}

.dark-theme .btn-premium svg {
    color: white !important;
}

/* Force l'icône holographique en blanc en mode sombre */
.holographic svg {
    color: white !important;
}

.dark-theme .holographic svg {
    color: white !important;
}

/* ===== CARTES PREMIUM AVEC EFFET 3D ===== */
.card-premium {
    position: relative;
    transform-style: preserve-3d;
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.card-premium::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 2px;
    background: linear-gradient(135deg, transparent, rgba(79, 118, 247, 0.5), transparent);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.card-premium:hover {
    transform: translateY(-15px) rotateX(5deg) rotateY(5deg) translateZ(20px);
    box-shadow: 
        0 30px 60px rgba(0, 0, 0, 0.15),
        0 0 60px rgba(79, 118, 247, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.card-premium:hover::before {
    opacity: 1;
}

/* ===== TEXTE AVEC EFFET MACHINE À ÉCRIRE ===== */
.typewriter {
    overflow: hidden;
    border-right: 3px solid var(--primary);
    white-space: nowrap;
    animation: typing 3.5s steps(40, end), blink 0.75s step-end infinite;
}

@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink {
    from, to {
        border-color: transparent;
    }
    50% {
        border-color: var(--primary);
    }
}

/* ===== EFFET DE SCAN FUTURISTE ===== */
.scan-line {
    position: relative;
    overflow: hidden;
}

.scan-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    animation: scan 2s linear infinite;
    opacity: 0.7;
    box-shadow: 0 0 10px var(--primary);
}

@keyframes scan {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(500px);
    }
}

/* ===== EFFET DE BRILLANCE MÉTALLIQUE ===== */
.metallic-shine {
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.1) 40%,
        rgba(255, 255, 255, 0.2) 50%,
        rgba(255, 255, 255, 0.1) 60%,
        rgba(255, 255, 255, 0) 100%
    );
    background-size: 200% 100%;
    animation: metallicShine 3s linear infinite;
}

@keyframes metallicShine {
    0% {
        background-position: 200% center;
    }
    100% {
        background-position: -200% center;
    }
}

/* ===== OVERLAY PREMIUM AVEC BRUIT ===== */
.premium-overlay {
    position: relative;
}

.premium-overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="0.9" numOctaves="4" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23noise)" opacity="0.05"/></svg>');
    pointer-events: none;
    mix-blend-mode: overlay;
    opacity: 0.3;
}

/* ===== TRANSITIONS DE NAVIGATION LIQUIDES ===== */
.page-transition-liquid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), #667eea);
    transform: translateX(-100%);
    transition: transform 0.6s cubic-bezier(0.76, 0, 0.24, 1);
    z-index: 9998;
    pointer-events: none;
    opacity: 0.95;
}

.page-transition-liquid::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: liquidSpin 0.8s linear infinite;
}

@keyframes liquidSpin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.page-transition-liquid.active {
    transform: translateX(0);
}

.page-transition-liquid.leaving {
    transform: translateX(100%);
    transition: transform 0.6s cubic-bezier(0.76, 0, 0.24, 1);
}

/* ===== EFFET DE PROFONDEUR ISOMÉTRIQUE ===== */
.isometric {
    transform: rotateX(51deg) rotateZ(43deg);
    transform-style: preserve-3d;
}

.isometric-shadow {
    box-shadow: 
        -20px 20px 40px rgba(0, 0, 0, 0.2),
        -40px 40px 80px rgba(0, 0, 0, 0.1);
}

/* ===== LOADING SKELETON PREMIUM ===== */
.skeleton-premium {
    background: linear-gradient(
        90deg,
        rgba(79, 118, 247, 0.05) 25%,
        rgba(79, 118, 247, 0.15) 50%,
        rgba(79, 118, 247, 0.05) 75%
    );
    background-size: 200% 100%;
    animation: skeletonShimmer 2s ease-in-out infinite;
}

@keyframes skeletonShimmer {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .card-premium:hover {
        transform: translateY(-10px) scale(1.02);
    }
    
    .btn-premium {
        padding: 0.875rem 2rem;
    }
    
    .cyber-grid {
        opacity: 0.02;
    }
}

/* ===== PERFORMANCE OPTIMIZATIONS ===== */
.card-premium,
.btn-premium,
.holographic,
.interactive-glow {
    will-change: transform;
}

@media (prefers-reduced-motion: reduce) {
    .particle-premium,
    .cyber-grid,
    .holographic,
    .scan-line::after,
    .metallic-shine {
        animation: none;
    }
    
    .card-premium:hover {
        transform: translateY(-10px);
    }
}