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

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

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

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

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

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

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

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

/* Pulse Animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

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

/* Glow Animation */
@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(102, 126, 234, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(102, 126, 234, 0.6);
    }
}

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

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

/* Wave Animation */
@keyframes wave {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-30px);
    }
}

/* Flip Animation */
@keyframes flip {
    from {
        transform: perspective(400px) rotateY(0);
    }
    to {
        transform: perspective(400px) rotateY(360deg);
    }
}

/* ==================== ANIMATION CLASSES ==================== */

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

.animate-fade-up {
    opacity: 0;
    animation: fadeInUp 0.8s ease-in-out forwards;
}

.animate-fade-down {
    opacity: 0;
    animation: fadeInDown 0.8s ease-in-out forwards;
}

.animate-slide-left {
    opacity: 0;
    animation: slideInLeft 0.8s ease-in-out forwards;
}

.animate-slide-right {
    opacity: 0;
    animation: slideInRight 0.8s ease-in-out forwards;
}

.animate-scale {
    opacity: 0;
    animation: scaleIn 0.6s ease-out forwards;
}

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

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

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

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

.animate-rotate {
    animation: rotate 2s linear infinite;
}

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

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

.animate-flip {
    animation: flip 0.6s ease-in-out forwards;
}

/* ==================== STAGGER ANIMATIONS ==================== */
.stagger-item:nth-child(1) { animation-delay: 0s; }
.stagger-item:nth-child(2) { animation-delay: 0.1s; }
.stagger-item:nth-child(3) { animation-delay: 0.2s; }
.stagger-item:nth-child(4) { animation-delay: 0.3s; }
.stagger-item:nth-child(5) { animation-delay: 0.4s; }
.stagger-item:nth-child(6) { animation-delay: 0.5s; }
.stagger-item:nth-child(7) { animation-delay: 0.6s; }
.stagger-item:nth-child(8) { animation-delay: 0.7s; }
.stagger-item:nth-child(9) { animation-delay: 0.8s; }
.stagger-item:nth-child(10) { animation-delay: 0.9s; }

/* ==================== HOVER EFFECTS ==================== */
.hover-lift {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

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

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

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

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

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

.hover-shadow:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

/* ==================== SCROLL ANIMATIONS ==================== */
.scroll-fade {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-fade.visible {
    opacity: 1;
    transform: translateY(0);
}

.scroll-slide-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-slide-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.scroll-slide-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-slide-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scroll-scale {
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-scale.visible {
    opacity: 1;
    transform: scale(1);
}

/* ==================== TRANSITION UTILITIES ==================== */
.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 0.6s ease;
}

/* ==================== GLASSMORPHISM EFFECTS ==================== */
.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.glass-dark {
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.2);
}

/* ==================== GRADIENT BACKGROUNDS ==================== */
.gradient-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.gradient-sunset {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.gradient-ocean {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.gradient-forest {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

/* ==================== TEXT EFFECTS ==================== */
.text-gradient {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-shadow-lg {
    text-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

/* ==================== SPECIAL EFFECTS ==================== */
.blur-background {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.noise-effect {
    background-image: 
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100"><filter id="noise"><feTurbulence baseFrequency="0.9" numOctaves="4" /></filter><rect width="100" height="100" filter="url(%23noise)" opacity="0.05"/></svg>');
}

/* ==================== ANIMATIONS FOR CARDS ==================== */
.card-entrance {
    animation: fadeInUp 0.5s ease-out forwards;
}

.card-entrance:nth-child(1) { animation-delay: 0.1s; }
.card-entrance:nth-child(2) { animation-delay: 0.2s; }
.card-entrance:nth-child(3) { animation-delay: 0.3s; }
.card-entrance:nth-child(4) { animation-delay: 0.4s; }
.card-entrance:nth-child(5) { animation-delay: 0.5s; }
.card-entrance:nth-child(6) { animation-delay: 0.6s; }

/* ==================== LOADING ANIMATIONS ==================== */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

.blur-load {
    filter: blur(10px);
    animation: fadeIn 0.6s ease forwards;
}

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