/* Modern CSS Enhancements */

/* Variables supplémentaires */
:root {
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-warning: linear-gradient(135deg, #f6d365 0%, #fda085 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 20px 60px rgba(0, 0, 0, 0.12);
    --shadow-hard: 0 30px 80px rgba(0, 0, 0, 0.16);
    
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --border-radius-xl: 32px;
    
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s ease;
}

/* Typographie améliorée */
.text-gradient-primary {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-secondary {
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-warning {
    background: var(--gradient-warning);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Boutons améliorés */
.btn-gradient-primary {
    background: var(--gradient-primary);
    border: none;
    color: white;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-gradient-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    z-index: -1;
    opacity: 0;
    transition: var(--transition-medium);
}

.btn-gradient-primary:hover::before {
    opacity: 1;
}

.btn-gradient-secondary {
    background: var(--gradient-secondary);
    border: none;
    color: white;
}

/* Cards améliorées */
.card-modern {
    border: none;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    background: white;
    box-shadow: var(--shadow-soft);
    transition: all var(--transition-medium);
    position: relative;
}

.card-modern:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hard);
}

.card-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-medium);
}

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

/* Loaders et animations */
.loader-dots {
    display: inline-block;
    position: relative;
    width: 80px;
    height: 80px;
}

.loader-dots div {
    position: absolute;
    top: 33px;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background: var(--primary-color);
    animation-timing-function: cubic-bezier(0, 1, 1, 0);
}

.loader-dots div:nth-child(1) {
    left: 8px;
    animation: loader-dots1 0.6s infinite;
}

.loader-dots div:nth-child(2) {
    left: 8px;
    animation: loader-dots2 0.6s infinite;
}

.loader-dots div:nth-child(3) {
    left: 32px;
    animation: loader-dots2 0.6s infinite;
}

.loader-dots div:nth-child(4) {
    left: 56px;
    animation: loader-dots3 0.6s infinite;
}

@keyframes loader-dots1 {
    0% { transform: scale(0); }
    100% { transform: scale(1); }
}

@keyframes loader-dots3 {
    0% { transform: scale(1); }
    100% { transform: scale(0); }
}

@keyframes loader-dots2 {
    0% { transform: translate(0, 0); }
    100% { transform: translate(24px, 0); }
}

/* Floating animations */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

@keyframes float-slow {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-10px) rotate(5deg); }
    75% { transform: translateY(10px) rotate(-5deg); }
}

.floating {
    animation: float 6s ease-in-out infinite;
}

.floating-slow {
    animation: float-slow 8s ease-in-out infinite;
}

/* Particle background */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    z-index: -1;
}

.particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float-particle 20s infinite linear;
}

@keyframes float-particle {
    0% { transform: translateY(100vh) rotate(0deg); }
    100% { transform: translateY(-100vh) rotate(360deg); }
}

/* Glitch text effect */
.glitch {
    position: relative;
    color: white;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.glitch::before {
    left: 2px;
    text-shadow: -1px 0 red;
    clip: rect(24px, 550px, 90px, 0);
    animation: glitch-anim 5s infinite linear alternate-reverse;
}

.glitch::after {
    left: -2px;
    text-shadow: -1px 0 blue;
    clip: rect(85px, 550px, 140px, 0);
    animation: glitch-anim2 5s infinite linear alternate-reverse;
}

@keyframes glitch-anim {
    0% { clip: rect(42px, 9999px, 44px, 0); }
    5% { clip: rect(12px, 9999px, 59px, 0); }
    10% { clip: rect(48px, 9999px, 29px, 0); }
    15% { clip: rect(42px, 9999px, 73px, 0); }
    20% { clip: rect(63px, 9999px, 27px, 0); }
    25% { clip: rect(34px, 9999px, 55px, 0); }
    30% { clip: rect(86px, 9999px, 73px, 0); }
    35% { clip: rect(20px, 9999px, 20px, 0); }
    40% { clip: rect(26px, 9999px, 60px, 0); }
    45% { clip: rect(25px, 9999px, 66px, 0); }
    50% { clip: rect(57px, 9999px, 98px, 0); }
    55% { clip: rect(5px, 9999px, 46px, 0); }
    60% { clip: rect(82px, 9999px, 31px, 0); }
    65% { clip: rect(54px, 9999px, 27px, 0); }
    70% { clip: rect(28px, 9999px, 99px, 0); }
    75% { clip: rect(45px, 9999px, 69px, 0); }
    80% { clip: rect(23px, 9999px, 85px, 0); }
    85% { clip: rect(54px, 9999px, 84px, 0); }
    90% { clip: rect(45px, 9999px, 47px, 0); }
    95% { clip: rect(37px, 9999px, 20px, 0); }
    100% { clip: rect(4px, 9999px, 91px, 0); }
}

@keyframes glitch-anim2 {
    0% { clip: rect(65px, 9999px, 100px, 0); }
    5% { clip: rect(52px, 9999px, 74px, 0); }
    10% { clip: rect(79px, 9999px, 85px, 0); }
    15% { clip: rect(75px, 9999px, 5px, 0); }
    20% { clip: rect(67px, 9999px, 61px, 0); }
    25% { clip: rect(14px, 9999px, 79px, 0); }
    30% { clip: rect(1px, 9999px, 66px, 0); }
    35% { clip: rect(86px, 9999px, 30px, 0); }
    40% { clip: rect(23px, 9999px, 98px, 0); }
    45% { clip: rect(85px, 9999px, 72px, 0); }
    50% { clip: rect(71px, 9999px, 75px, 0); }
    55% { clip: rect(2px, 9999px, 48px, 0); }
    60% { clip: rect(30px, 9999px, 16px, 0); }
    65% { clip: rect(59px, 9999px, 50px, 0); }
    70% { clip: rect(41px, 9999px, 62px, 0); }
    75% { clip: rect(2px, 9999px, 82px, 0); }
    80% { clip: rect(47px, 9999px, 73px, 0); }
    85% { clip: rect(3px, 9999px, 27px, 0); }
    90% { clip: rect(40px, 9999px, 86px, 0); }
    95% { clip: rect(45px, 9999px, 72px, 0); }
    100% { clip: rect(23px, 9999px, 49px, 0); }
}

/* Neon effect */
.neon-text {
    color: #fff;
    text-shadow:
        0 0 7px #fff,
        0 0 10px #fff,
        0 0 21px #fff,
        0 0 42px var(--primary-color),
        0 0 82px var(--primary-color),
        0 0 92px var(--primary-color),
        0 0 102px var(--primary-color),
        0 0 151px var(--primary-color);
    animation: neon-flicker 1.5s infinite alternate;
}

@keyframes neon-flicker {
    0%, 18%, 22%, 25%, 53%, 57%, 100% {
        text-shadow:
            0 0 4px #fff,
            0 0 11px #fff,
            0 0 19px #fff,
            0 0 40px var(--primary-color),
            0 0 80px var(--primary-color),
            0 0 90px var(--primary-color),
            0 0 100px var(--primary-color),
            0 0 150px var(--primary-color);
    }
    20%, 24%, 55% {
        text-shadow: none;
    }
}

/* Gradient borders */
.gradient-border {
    position: relative;
    background: white;
    border-radius: var(--border-radius-md);
}

.gradient-border::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-primary);
    border-radius: calc(var(--border-radius-md) + 2px);
    z-index: -1;
}

/* Hover effects */
.hover-lift {
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.hover-glow {
    transition: box-shadow var(--transition-medium);
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(var(--primary-color-rgb), 0.5);
}

/* Shimmer effect */
.shimmer {
    position: relative;
    overflow: hidden;
}

.shimmer::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    100% { left: 100%; }
}

/* 3D Card effect */
.card-3d {
    transform-style: preserve-3d;
    perspective: 1000px;
}

.card-3d:hover .card-inner {
    transform: rotateY(180deg);
}

.card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.8s;
    transform-style: preserve-3d;
}

.card-front, .card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: var(--border-radius-md);
}

.card-back {
    background: var(--gradient-primary);
    color: white;
    transform: rotateY(180deg);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

/* Responsive improvements */
@media (max-width: 768px) {
    .display-4 {
        font-size: 2.5rem;
    }
    
    .display-3 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    .display-4 {
        font-size: 2rem;
    }
    
    .display-3 {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .btn-lg {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
}

/* Print styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    .card {
        break-inside: avoid;
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
    
    .btn {
        display: none !important;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0044cc;
        --primary-dark: #002266;
        --text-dark: #000000;
        --text-light: #333333;
    }
    
    .card {
        border: 2px solid var(--text-dark);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-light: #1a1a1a;
        --bg-white: #2d2d2d;
        --text-dark: #ffffff;
        --text-light: #cccccc;
        --text-muted: #999999;
    }
    
    .card {
        background: var(--bg-white);
        color: var(--text-dark);
    }
    
    .text-muted {
        color: var(--text-muted) !important;
    }
}