/* ==========================================================================
   Sri Vasavi Matric. Hr. Sec. School - Custom Animations
   ========================================================================== */

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-40px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-60px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(60px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes zoomIn {
    from { opacity: 0; transform: scale(0.6); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes floaty {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-16px); }
}

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

@keyframes kenburns {
    from { transform: scale(1); }
    to { transform: scale(1.15); }
}

@keyframes ring {
    0%, 100% { transform: rotate(0); }
    20% { transform: rotate(-18deg); }
    40% { transform: rotate(18deg); }
    60% { transform: rotate(-12deg); }
    80% { transform: rotate(12deg); }
}

@keyframes pulse-badge {
    0%, 100% { box-shadow: 0 0 0 0 rgba(246, 180, 0, 0.55); }
    50% { box-shadow: 0 0 0 10px rgba(246, 180, 0, 0); }
}

@keyframes blink {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0.35; }
}

@keyframes bounceIn {
    0% { opacity: 0; transform: scale(0.3); }
    50% { opacity: 1; transform: scale(1.05); }
    70% { transform: scale(0.9); }
    100% { opacity: 1; transform: scale(1); }
}

@keyframes slideInRight {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

@keyframes slideInLeft {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

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

@keyframes wiggle {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-6deg); }
    75% { transform: rotate(6deg); }
}

/* --------------------------------------------------------------------------
   Scroll-reveal helper classes (driven by IntersectionObserver in script.js)
   -------------------------------------------------------------------------- */
.reveal {
    opacity: 0;
    will-change: transform, opacity;
}

.reveal.in-view {
    animation-duration: 1s;
    animation-fill-mode: both;
    animation-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.up.in-view { animation-name: fadeInUp; }
.reveal.down.in-view { animation-name: fadeInDown; }
.reveal.left.in-view { animation-name: fadeInLeft; }
.reveal.right.in-view { animation-name: fadeInRight; }
.reveal.zoom.in-view { animation-name: zoomIn; }
.reveal.bounce.in-view { animation-name: bounceIn; }

.reveal[data-delay="100"].in-view { animation-delay: 0.1s; }
.reveal[data-delay="200"].in-view { animation-delay: 0.2s; }
.reveal[data-delay="300"].in-view { animation-delay: 0.3s; }
.reveal[data-delay="400"].in-view { animation-delay: 0.4s; }
.reveal[data-delay="500"].in-view { animation-delay: 0.5s; }
.reveal[data-delay="600"].in-view { animation-delay: 0.6s; }

/* 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 { opacity: 1; }
}