/* =============================================
   URTIM Akademi - Animations
   Keyframes, Scroll Reveal, Transitions
   ============================================= */

/* ---- Fade In Variants ---- */
@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 fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ---- Slide Variants ---- */
@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

@keyframes slideDown {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}

/* ---- Scale Variants ---- */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.85);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(0, 152, 218, 0.4); }
    50% { box-shadow: 0 0 0 12px rgba(0, 152, 218, 0); }
}

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

@keyframes wiggle {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(5deg); }
    75% { transform: rotate(-5deg); }
}

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

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.95);
    }
    100% {
        transform: scale(1);
    }
}

/* ---- Float ---- */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-8px) rotate(1deg); }
    66% { transform: translateY(4px) rotate(-1deg); }
}

@keyframes floatSlow {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
}

/* ---- Shimmer ---- */
@keyframes shimmer {
    from { background-position: -1000px 0; }
    to { background-position: 1000px 0; }
}

/* ---- Gradient Flow ---- */
@keyframes gradientFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ---- Counter Animation ---- */
@keyframes countUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---- Underline Grow ---- */
@keyframes underlineGrow {
    from { width: 0; }
    to { width: 100%; }
}

/* ---- Modal Animations ---- */
@keyframes modalFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

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

@keyframes modalSlideOut {
    from {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    to {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
}

/* ---- Progress Bar ---- */
@keyframes progressFill {
    from { width: 0; }
}

/* ---- Typing cursor ---- */
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* =============================================
   Scroll Reveal Classes
   Elements start hidden and animate in view
   ============================================= */

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
    will-change: opacity, transform;
}

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

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
    will-change: opacity, transform;
}

.reveal-left.revealed {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
    will-change: opacity, transform;
}

.reveal-right.revealed {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.85);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
    will-change: opacity, transform;
}

.reveal-scale.revealed {
    opacity: 1;
    transform: scale(1);
}

/* Staggered delays for grid children */
.reveal-stagger > :nth-child(1) { transition-delay: 0ms; }
.reveal-stagger > :nth-child(2) { transition-delay: 100ms; }
.reveal-stagger > :nth-child(3) { transition-delay: 200ms; }
.reveal-stagger > :nth-child(4) { transition-delay: 300ms; }
.reveal-stagger > :nth-child(5) { transition-delay: 400ms; }
.reveal-stagger > :nth-child(6) { transition-delay: 500ms; }

/* ---- Animate classes (immediate, on load) ---- */
.animate-fade-in {
    animation: fadeIn 0.6s var(--ease) forwards;
}

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

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

.animate-scale-in {
    animation: scaleIn 0.5s var(--ease-bounce) forwards;
}

.animate-bounce-in {
    animation: bounceIn 0.8s var(--ease) forwards;
}

/* ---- Delay utilities ---- */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }
.delay-600 { animation-delay: 600ms; }
.delay-700 { animation-delay: 700ms; }
.delay-800 { animation-delay: 800ms; }

/* ---- Premium Card Hover Glow ---- */
.card-glow {
    position: relative;
}

.card-glow::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0;
    transition: opacity 0.4s;
    box-shadow: 0 8px 32px rgba(0, 152, 218, 0.18);
    pointer-events: none;
}

.card-glow:hover::after {
    opacity: 1;
}

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

/* ---- Smooth number counter ---- */
@keyframes slideInNumber {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---- Tab slide ---- */
@keyframes tabSlideIn {
    from { opacity: 0; transform: translateX(16px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ---- Hover Effects ---- */
.hover-lift {
    transition: var(--transition);
}

.hover-lift:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

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

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

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

.hover-scale:hover {
    transform: scale(1.03);
}

/* ---- Icon Animations ---- */
.icon-bounce:hover i {
    animation: bounce 0.6s var(--ease);
}

.icon-spin:hover i {
    animation: spin 0.6s var(--ease);
}

.icon-wiggle:hover i {
    animation: wiggle 0.4s var(--ease);
}

/* ---- Text gradient animation ---- */
.text-gradient {
    background: linear-gradient(135deg, var(--primary), var(--primary-light), var(--accent));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientFlow 4s ease infinite;
}

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

    .reveal,
    .reveal-left,
    .reveal-right,
    .reveal-scale {
        opacity: 1;
        transform: none;
    }
}