/* ========== ANIMATIONS & TRANSITIONS ========== */

/* Fade Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

/* Slide Animations */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

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

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

@keyframes scaleUp {
    from {
        transform: scale(1);
    }
    to {
        transform: scale(1.05);
    }
}

/* Rotate Animations */
@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

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

/* Pulse Animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Shimmer Animation */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Glow Animation */
@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(255, 153, 51, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(255, 153, 51, 0.8);
    }
}

/* Scroll Animation Classes */
.animate-on-scroll {
    opacity: 0;
    animation: slideInUp 0.6s ease-out forwards;
}

.animate-fade-in {
    animation: fadeIn 0.8s ease-out;
}

.animate-slide-in {
    animation: slideInUp 0.6s ease-out;
}

.animate-scale-in {
    animation: scaleIn 0.5s ease-out;
}

/* Staggered Animations */
.timeline-item:nth-child(1) {
    animation-delay: 0.1s;
}

.timeline-item:nth-child(2) {
    animation-delay: 0.2s;
}

.timeline-item:nth-child(3) {
    animation-delay: 0.3s;
}

.timeline-item:nth-child(4) {
    animation-delay: 0.4s;
}

.timeline-item:nth-child(5) {
    animation-delay: 0.5s;
}

.timeline-item:nth-child(n+6) {
    animation-delay: calc((var(--index, 0) - 5) * 0.1s);
}

/* Hover Scale Effect */
.scale-hover {
    transition: transform var(--transition-normal);
}

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

/* Smooth Transitions */
.smooth-transition {
    transition: all var(--transition-normal);
}

/* Color Transition */
.color-transition {
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

/* Shadow Transition */
.shadow-transition {
    transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

/* Loading Skeleton */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--border-color) 0%,
        var(--bg-light) 50%,
        var(--border-color) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

/* Link Hover Effects */
a.link-hover {
    position: relative;
    transition: color var(--transition-fast);
}

a.link-hover::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: width var(--transition-normal);
}

a.link-hover:hover::after {
    width: 100%;
}

/* Button Press Effect */
.btn-press {
    transition: transform var(--transition-fast);
}

.btn-press:active {
    transform: scale(0.98);
}

/* Card Hover Effect */
.card-hover {
    transition: all var(--transition-normal);
}

.card-hover:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

/* Text Gradient Animation */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}