/* ==========================================
   ANIMATIONS.CSS - Animations et Transitions
   ========================================== */

/* ==========================================
   KEYFRAMES - Animations de base
   ========================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideInLeft {
    from {
        transform: translateX(-50px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(50px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

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

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

@keyframes gradient-shift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* ==========================================
   CLASSES D'ANIMATION - Utilisation directe
   ========================================== */

.animate-fade-in {
    animation: fadeIn 0.5s ease forwards;
}

.animate-fade-up {
    animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
}

.animate-fade-down {
    animation: slideDown 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
}

.animate-slide-left {
    animation: slideInLeft 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
}

.animate-slide-right {
    animation: slideInRight 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
}

.animate-scale-in {
    animation: scaleIn 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-bounce {
    animation: bounce 1s ease-in-out infinite;
}

.animate-spin {
    animation: spin 1s linear infinite;
}

/* ==========================================
   ANIMATIONS AU SCROLL (IntersectionObserver)
   ========================================== */

.animate-in {
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Délais d'animation pour effet cascade */
.animate-fade-up:nth-child(1) { animation-delay: 0s; }
.animate-fade-up:nth-child(2) { animation-delay: 0.1s; }
.animate-fade-up:nth-child(3) { animation-delay: 0.2s; }
.animate-fade-up:nth-child(4) { animation-delay: 0.3s; }
.animate-fade-up:nth-child(5) { animation-delay: 0.4s; }
.animate-fade-up:nth-child(6) { animation-delay: 0.5s; }

/* ==========================================
   TRANSITIONS AVANCÉES
   ========================================== */

.transition-all {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.transition-fast {
    transition: all 0.15s ease;
}

.transition-slow {
    transition: all 0.5s ease;
}

/* ==========================================
   EFFETS HOVER
   ========================================== */

.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.hover-scale {
    transition: transform 0.3s ease;
}

.hover-scale:hover {
    transform: scale(1.05);
}

.hover-brightness {
    transition: filter 0.3s ease;
}

.hover-brightness:hover {
    filter: brightness(1.1);
}

/* ==========================================
   LOADING STATES
   ========================================== */

.skeleton {
    background: linear-gradient(
        90deg,
        var(--gray-lighter) 25%,
        var(--gray-light) 50%,
        var(--gray-lighter) 75%
    );
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-lighter);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-dots::after {
    content: '';
    animation: loading-dots 1.5s steps(4, end) infinite;
}

@keyframes loading-dots {
    0%, 20% { content: ''; }
    40% { content: '.'; }
    60% { content: '..'; }
    80%, 100% { content: '...'; }
}

/* ==========================================
   NOTIFICATIONS
   ========================================== */

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    min-width: 300px;
    max-width: 500px;
    padding: 1rem 1.5rem;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 9999;
    transform: translateX(150%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.notification.show {
    transform: translateX(0);
}

.notification i {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.notification-success {
    border-left: 4px solid var(--secondary);
}

.notification-success i {
    color: var(--secondary);
}

.notification-error {
    border-left: 4px solid #ef4444;
}

.notification-error i {
    color: #ef4444;
}

.notification-warning {
    border-left: 4px solid var(--accent);
}

.notification-warning i {
    color: var(--accent);
}

.notification-info {
    border-left: 4px solid var(--primary);
}

.notification-info i {
    color: var(--primary);
}

/* ==========================================
   SCROLL TO TOP BUTTON
   ========================================== */

.scroll-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 999;
}

.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-top-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* ==========================================
   PROGRESS BAR
   ========================================== */

.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gray-lighter);
    z-index: 9999;
}

.progress-bar-fill {
    height: 100%;
    background: var(--gradient-primary);
    width: 0%;
    transition: width 0.3s ease;
}

/* ==========================================
   TOOLTIPS
   ========================================== */

[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    padding: 0.5rem 1rem;
    background: var(--dark);
    color: white;
    font-size: 0.875rem;
    border-radius: var(--radius);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1000;
}

[data-tooltip]::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: var(--dark);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
}

[data-tooltip]:hover::before,
[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
}

/* ==========================================
   BADGES ANIMÉS
   ========================================== */

.badge-animated {
    position: relative;
    overflow: hidden;
}

.badge-animated::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 0.5s ease;
}

.badge-animated:hover::before {
    left: 100%;
}

/* ==========================================
   GRADIENT ANIMÉ
   ========================================== */

.gradient-animated {
    background: linear-gradient(
        -45deg,
        #2563eb,
        #7c3aed,
        #ec4899,
        #f59e0b
    );
    background-size: 400% 400%;
    animation: gradient-shift 15s ease infinite;
}

/* ==========================================
   BLUR EFFECTS
   ========================================== */

.blur-in {
    filter: blur(10px);
    opacity: 0;
    transition: filter 0.5s ease, opacity 0.5s ease;
}

.blur-in.active {
    filter: blur(0);
    opacity: 1;
}

/* ==========================================
   RIPPLE EFFECT (Material Design)
   ========================================== */

.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.ripple:active::after {
    width: 300px;
    height: 300px;
}

/* ==========================================
   TYPEWRITER EFFECT
   ========================================== */

.typewriter {
    overflow: hidden;
    border-right: 2px solid var(--primary);
    white-space: nowrap;
    animation: 
        typing 3.5s steps(40, end),
        blink-caret 0.75s step-end infinite;
}

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

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

/* ==========================================
   FLOATING ANIMATION
   ========================================== */

.float {
    animation: float 3s ease-in-out infinite;
}

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

/* ==========================================
   GLOW EFFECT
   ========================================== */

.glow {
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        box-shadow: 0 0 10px var(--primary-light), 
                    0 0 20px var(--primary-light);
    }
    to {
        box-shadow: 0 0 20px var(--primary), 
                    0 0 30px var(--primary);
    }
}

/* ==========================================
   FLIP CARD
   ========================================== */

.flip-card {
    perspective: 1000px;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

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

.flip-card-front,
.flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
}

.flip-card-back {
    transform: rotateY(180deg);
}

/* ==========================================
   RESPONSIVE ANIMATIONS
   ========================================== */

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

@media (max-width: 768px) {
    .notification {
        right: 10px;
        left: 10px;
        min-width: auto;
    }
    
    .scroll-top-btn {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}