/**
 * ========================================
 * ANIMATION.CSS
 * Custom animations beyond AOS
 * ========================================
 */

/* =========================
   KEYFRAMES - BASE 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 fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

@keyframes glow {
    0% {
        box-shadow: 0 0 5px rgba(59, 130, 246, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(59, 130, 246, 0.6);
    }
    100% {
        box-shadow: 0 0 5px rgba(59, 130, 246, 0.3);
    }
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        transform: translateY(0px);
    }
}

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

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

@keyframes blink {
    50% {
        border-color: transparent;
    }
}

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

/* =========================
   UTILITY CLASSES
========================= */

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-fade-in-down {
    animation: fadeInDown 0.6s ease forwards;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.6s ease forwards;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s ease forwards;
}

.animate-zoom-in {
    animation: zoomIn 0.5s ease forwards;
}

.animate-slide-up {
    animation: slideInUp 0.7s ease forwards;
}

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

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

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

.animate-rotate {
    animation: rotate 10s linear infinite;
}

/* =========================
   DELAYS
========================= */

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }
.delay-600 { animation-delay: 0.6s; }
.delay-700 { animation-delay: 0.7s; }
.delay-800 { animation-delay: 0.8s; }
.delay-900 { animation-delay: 0.9s; }
.delay-1000 { animation-delay: 1s; }

/* =========================
   DURATIONS
========================= */

.duration-fast { animation-duration: 0.3s; }
.duration-normal { animation-duration: 0.6s; }
.duration-slow { animation-duration: 1s; }
.duration-slower { animation-duration: 1.5s; }

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

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

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

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

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

.hover-glow {
    transition: all 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
    border-color: #3B82F6;
}

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

.hover-rotate:hover {
    transform: rotate(5deg);
}

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

.loading-skeleton {
    background: linear-gradient(90deg, rgba(255,255,255,0.05) 25%, rgba(255,255,255,0.1) 50%, rgba(255,255,255,0.05) 75%);
    background-size: 1000px 100%;
    animation: shimmer 1.5s infinite;
}

/* =========================
   SCROLL REVEAL (Custom)
========================= */

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* =========================
   PAGE TRANSITIONS
========================= */

.page-transition {
    animation: fadeInUp 0.5s ease forwards;
}

/* =========================
   TYPING EFFECT (for hero)
========================= */

.typing-container {
    display: inline-block;
}

.typing-text {
    border-right: 2px solid #3B82F6;
    white-space: nowrap;
    overflow: hidden;
    animation: blink 0.75s step-end infinite;
}

/* =========================
   CARD STAGGER ANIMATIONS
========================= */

.card-stagger > * {
    opacity: 0;
    animation: fadeInUp 0.5s ease forwards;
}

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

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

.gradient-shift {
    background: linear-gradient(270deg, #0F172A, #1E293B, #0F172A);
    background-size: 200% 200%;
    animation: gradientShift 10s ease infinite;
}

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

/* =========================
   LIGHT MODE ADAPTATIONS
========================= */

body.light-mode .loading-skeleton {
    background: linear-gradient(90deg, #E2E8F0 25%, #CBD5E1 50%, #E2E8F0 75%);
}