/* ============================================
   Animations & Micro-interactions
   ============================================ */

/* === Keyframes === */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-16px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(16px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

@keyframes slideOutRight {
    from { transform: translateX(0); }
    to { transform: translateX(100%); }
}

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

@keyframes toastSlideIn {
    from { opacity: 0; transform: translateX(100px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes toastSlideOut {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(100px); }
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

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

@keyframes glow {
    0%, 100% { box-shadow: 0 0 4px var(--color-accent-glow); }
    50% { box-shadow: 0 0 16px var(--color-accent-glow), 0 0 32px rgba(0, 212, 255, 0.08); }
}

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

@keyframes countUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes bounceIn {
    0% { opacity: 0; transform: scale(0.3); }
    50% { transform: scale(1.05); }
    70% { transform: scale(0.9); }
    100% { opacity: 1; transform: scale(1); }
}

@keyframes checkmark {
    0% { stroke-dashoffset: 100; }
    100% { stroke-dashoffset: 0; }
}

/* === Classes d'animation === */
.animate-fade-in { animation: fadeIn var(--transition-slow) ease forwards; }
.animate-fade-in-up { animation: fadeInUp var(--transition-slow) ease forwards; }
.animate-fade-in-down { animation: fadeInDown var(--transition-slow) ease forwards; }
.animate-fade-in-left { animation: fadeInLeft var(--transition-slow) ease forwards; }
.animate-fade-in-right { animation: fadeInRight var(--transition-slow) ease forwards; }
.animate-scale-in { animation: scaleIn var(--transition-slow) ease forwards; }
.animate-bounce-in { animation: bounceIn 0.6s ease forwards; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }
.animate-spin { animation: spin 1s linear infinite; }
.animate-glow { animation: glow 2s ease-in-out infinite; }

/* Délais d'animation staggered */
.delay-1 { animation-delay: 50ms; }
.delay-2 { animation-delay: 100ms; }
.delay-3 { animation-delay: 150ms; }
.delay-4 { animation-delay: 200ms; }
.delay-5 { animation-delay: 250ms; }
.delay-6 { animation-delay: 300ms; }
.delay-7 { animation-delay: 350ms; }
.delay-8 { animation-delay: 400ms; }

/* État initial pour les animations staggered
   Les éléments commencent invisibles et apparaissent via animation.
   Fallback : visible après 1s si l'animation ne se lance pas. */
[class*="animate-fade-in"],
[class*="animate-scale-in"],
.animate-bounce-in {
    opacity: 0;
    animation-fill-mode: forwards;
}

/* === Background animé gradient mesh (auth pages) === */
.bg-gradient-mesh {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: var(--color-bg-primary);
    overflow: hidden;
}

.bg-gradient-mesh::before,
.bg-gradient-mesh::after {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    animation: gradientShift 15s ease infinite;
}

.bg-gradient-mesh::before {
    background: var(--color-accent);
    top: -200px;
    right: -100px;
}

.bg-gradient-mesh::after {
    background: var(--color-success);
    bottom: -200px;
    left: -100px;
    animation-delay: -7.5s;
}

/* === Spinner de chargement === */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.spinner-lg {
    width: 40px;
    height: 40px;
    border-width: 3px;
}

/* === Transition de page === */
.page-transition {
    animation: fadeInUp 0.4s ease forwards;
}

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

    /* S'assurer que les éléments animés sont visibles même sans animation */
    [class*="animate-fade-in"],
    [class*="animate-scale-in"],
    .animate-bounce-in,
    .page-transition {
        opacity: 1 !important;
        transform: none !important;
    }
}