/* =============================================
   SARASWATI HIGH SCHOOL — ANIMATIONS
   Keyframes, Scroll Reveals, Transitions
   ============================================= */

/* === Keyframe Animations === */

@keyframes float-slow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

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

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

@keyframes scroll-wheel {
    0% { opacity: 1; transform: translateY(0); }
    50% { opacity: 0.5; transform: translateY(6px); }
    100% { opacity: 0; transform: translateY(12px); }
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

@keyframes pulse-glow {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.1); }
}

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

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

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

@keyframes fade-in-left {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fade-in-right {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scale-in {
    from {
        opacity: 0;
        transform: scale(0.85);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

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

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

@keyframes typewriter-blink {
    0%, 100% { border-color: transparent; }
    50% { border-color: var(--gold); }
}

/* === Scroll Reveal Animations === */
.reveal-up,
.reveal-left,
.reveal-right,
.reveal-scale {
    opacity: 0;
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    transition-delay: var(--delay, 0s);
}

.reveal-up {
    transform: translateY(40px);
}

.reveal-left {
    transform: translateX(-40px);
}

.reveal-right {
    transform: translateX(40px);
}

.reveal-scale {
    transform: scale(0.9);
}

.reveal-up.revealed,
.reveal-left.revealed,
.reveal-right.revealed,
.reveal-scale.revealed {
    opacity: 1;
    transform: translate(0, 0) scale(1);
}

/* === Card Hover Effects === */
.feature-card,
.mv-card,
.program-card,
.stats-card,
.curriculum-card,
.activity-card,
.contact-info-card {
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 3D Tilt prep — enhanced by JS */
.feature-card:hover {
    box-shadow: 
        0 20px 60px rgba(0,0,0,0.08),
        0 0 0 1px rgba(var(--primary-rgb), 0.05);
}

/* === Gradient Text Animation === */
.gradient-text {
    background-size: 200% 200%;
    animation: gradient-shift 4s ease infinite;
}

/* === Nav Transition Effects === */
.navbar {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === Button Hover Animations === */
.btn {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.btn-primary::after {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
}

.btn:hover::after {
    opacity: 1;
}

.btn span,
.btn svg {
    position: relative;
    z-index: 1;
}

.btn svg {
    transition: transform 0.3s ease;
}

.btn:hover svg {
    transform: translateX(4px);
}

/* === Logo Animations === */
.logo-icon {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-logo:hover .logo-icon {
    transform: rotate(-5deg) scale(1.08);
    box-shadow: 0 6px 20px rgba(var(--primary-rgb), 0.4);
}

/* === Footer Link Hover === */
.footer-links a::before {
    content: '';
    display: inline-block;
    width: 0;
    height: 2px;
    background: var(--gold);
    vertical-align: middle;
    margin-right: 0;
    transition: all 0.3s ease;
}

.footer-links a:hover::before {
    width: 12px;
    margin-right: 8px;
}

/* === Social Link Hover Ripple === */
.social-link {
    position: relative;
    overflow: hidden;
}

.social-link::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: inherit;
    background: rgba(255,255,255,0.1);
    top: 0;
    left: 0;
    transform: scale(0);
    transition: transform 0.4s ease;
}

.social-link:hover::after {
    transform: scale(1);
}

/* === Gallery Item Hover Effects === */
.gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.1), rgba(var(--gold-rgb), 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: inherit;
    z-index: 1;
}

.gallery-item:hover::after {
    opacity: 1;
}

.gallery-overlay {
    z-index: 2;
}

/* === FAQ Animations === */
.faq-question {
    transition: all 0.3s ease;
}

.faq-question:hover {
    padding-left: 28px;
}

/* === Stat Number Glow === */
.stat-number,
.stats-number {
    transition: all 0.3s ease;
}

.stats-card:hover .stats-number {
    text-shadow: 0 0 20px rgba(var(--primary-rgb), 0.3);
}

/* === Parallax-ready elements (enhanced by JS) === */
[data-parallax] {
    will-change: transform;
}

/* === Loading State Animation === */
body.loading .page-transition {
    opacity: 1;
}

body.loaded .page-transition {
    opacity: 0;
    transition: opacity 0.5s ease 0.2s;
}

/* === Page Enter Animation === */
body.page-enter .hero-content > *,
body.page-enter .page-hero-content > * {
    animation: fade-in-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* === Staggered Children Animation === */
.stagger-children > * {
    opacity: 0;
    transform: translateY(20px);
}

.stagger-children.revealed > * {
    animation: fade-in-up 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.stagger-children.revealed > *:nth-child(1) { animation-delay: 0.05s; }
.stagger-children.revealed > *:nth-child(2) { animation-delay: 0.1s; }
.stagger-children.revealed > *:nth-child(3) { animation-delay: 0.15s; }
.stagger-children.revealed > *:nth-child(4) { animation-delay: 0.2s; }
.stagger-children.revealed > *:nth-child(5) { animation-delay: 0.25s; }
.stagger-children.revealed > *:nth-child(6) { animation-delay: 0.3s; }

/* === Smooth Image Zoom === */
.gallery-placeholder {
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === Underline Link Effect (used in nav) === */
.nav-link {
    position: relative;
}

.navbar.scrolled .nav-link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--gold));
    transform: translateX(-50%);
    transition: width 0.3s ease;
    border-radius: 1px;
}

.navbar.scrolled .nav-link:hover::after,
.navbar.scrolled .nav-link.active::after {
    width: 60%;
}

/* === Section Separator Decoration === */
.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--gold));
    border-radius: 2px;
    opacity: 0;
}

.features-section::before,
.mission-vision-section::before,
.testimonials-section::before,
.gallery-section::before,
.faq-section::before {
    opacity: 1;
}

/* === Back-to-top button pulse === */
.back-to-top {
    animation: none;
}

.back-to-top.visible {
    animation: fade-in-up 0.5s ease;
}

.back-to-top:hover {
    animation: pulse-glow 1.5s ease-in-out infinite;
}

/* === Input Focus Glow === */
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    animation: none;
    box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.08), 0 2px 10px rgba(var(--primary-rgb), 0.06);
}

/* === Prefers Reduced Motion === */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .reveal-up,
    .reveal-left,
    .reveal-right,
    .reveal-scale {
        opacity: 1;
        transform: none;
    }
}