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

/* Fade */
.fade-in {
    animation: fadeIn var(--transition-base) forwards;
}

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

.fade-out {
    animation: fadeOut var(--transition-base) forwards;
}

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

/* Slide */
.slide-up {
    animation: slideUp var(--transition-base) forwards;
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.slide-down {
    animation: slideDown var(--transition-base) forwards;
}

@keyframes slideDown {
    from {
        transform: translateY(-20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.slide-left {
    animation: slideLeft var(--transition-base) forwards;
}

@keyframes slideLeft {
    from {
        transform: translateX(20px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.slide-right {
    animation: slideRight var(--transition-base) forwards;
}

@keyframes slideRight {
    from {
        transform: translateX(-20px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Scale */
.scale-in {
    animation: scaleIn var(--transition-bounce) forwards;
}

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

.scale-out {
    animation: scaleOut var(--transition-base) forwards;
}

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

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--color-bg-card) 25%,
        var(--color-border) 50%,
        var(--color-bg-card) 75%
    );
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s infinite;
    border-radius: var(--radius-sm);
}

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

/* Spin */
.spin {
    animation: spin 1s linear infinite;
}

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

/* Bounce */
.bounce {
    animation: bounce 0.5s ease infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

/* Stagger children */
.stagger > * {
    opacity: 0;
}

.stagger > *:nth-child(1) { animation: slideUp 0.3s 0.05s forwards; }
.stagger > *:nth-child(2) { animation: slideUp 0.3s 0.1s forwards; }
.stagger > *:nth-child(3) { animation: slideUp 0.3s 0.15s forwards; }
.stagger > *:nth-child(4) { animation: slideUp 0.3s 0.2s forwards; }
.stagger > *:nth-child(5) { animation: slideUp 0.3s 0.25s forwards; }
.stagger > *:nth-child(6) { animation: slideUp 0.3s 0.3s forwards; }
.stagger > *:nth-child(7) { animation: slideUp 0.3s 0.35s forwards; }
.stagger > *:nth-child(8) { animation: slideUp 0.3s 0.4s forwards; }
.stagger > *:nth-child(9) { animation: slideUp 0.3s 0.45s forwards; }
.stagger > *:nth-child(10) { animation: slideUp 0.3s 0.5s forwards; }

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

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

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

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

.hover-scale {
    transition: transform var(--transition-base);
}

.hover-scale:hover {
    transform: scale(1.02);
}