/* ============================================
   ANIMATIONS.CSS — Keyframes & Scroll Triggers
   ============================================ */

/* — Page Transitions — */
@keyframes pageEnter {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

body.page-exit {
    animation: pageExit 0.3s ease forwards;
}

@keyframes pageExit {
    from {
        opacity: 1;
        transform: scale(1);
    }

    to {
        opacity: 0;
        transform: scale(0.99);
    }
}

/* — Navbar Slide Down — */
@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

#main-nav {
    animation: slideDown 0.5s ease forwards;
}

/* — Scroll Reveal — */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

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

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

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

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

.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* Staggered reveals */
.reveal-delay-1 {
    transition-delay: 0.1s;
}

.reveal-delay-2 {
    transition-delay: 0.2s;
}

.reveal-delay-3 {
    transition-delay: 0.3s;
}

.reveal-delay-4 {
    transition-delay: 0.4s;
}

.reveal-delay-5 {
    transition-delay: 0.5s;
}

/* — Typewriter / Text Reveal — */
@keyframes typewriter {
    from {
        width: 0;
    }

    to {
        width: 100%;
    }
}

@keyframes blinkCursor {

    0%,
    100% {
        border-color: var(--color-accent);
    }

    50% {
        border-color: transparent;
    }
}

.typewriter-text {
    display: inline-block;
    overflow: hidden;
    white-space: nowrap;
    border-right: 3px solid var(--color-accent);
    animation: typewriter 2s steps(30, end) forwards,
        blinkCursor 0.8s step-end infinite;
}

/* Split text character animation */
.split-char {
    display: inline-block;
    opacity: 0;
    transform: translateY(20px);
    animation: charReveal 0.5s ease forwards;
}

@keyframes charReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* — Floating Shapes — */
@keyframes float {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    33% {
        transform: translateY(-15px) rotate(5deg);
    }

    66% {
        transform: translateY(10px) rotate(-3deg);
    }
}

@keyframes floatSlow {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    25% {
        transform: translate(10px, -20px) rotate(10deg);
    }

    50% {
        transform: translate(-5px, -10px) rotate(-5deg);
    }

    75% {
        transform: translate(15px, -25px) rotate(8deg);
    }
}

@keyframes floatReverse {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    25% {
        transform: translate(-15px, 10px) rotate(-10deg);
    }

    50% {
        transform: translate(10px, 20px) rotate(5deg);
    }

    75% {
        transform: translate(-10px, 5px) rotate(-8deg);
    }
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--color-accent-dim) 0%, transparent 70%);
    top: 10%;
    right: -5%;
    animation: floatSlow 12s ease-in-out infinite;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, var(--color-accent-dim) 0%, transparent 70%);
    bottom: 20%;
    left: -3%;
    animation: floatReverse 15s ease-in-out infinite;
}

.shape-3 {
    width: 120px;
    height: 120px;
    border: 1px solid var(--color-accent-dim);
    top: 40%;
    left: 20%;
    border-radius: var(--radius);
    animation: float 8s ease-in-out infinite;
    transform-origin: center;
}

.shape-4 {
    width: 80px;
    height: 80px;
    border: 1px solid var(--color-accent-dim);
    bottom: 30%;
    right: 15%;
    border-radius: 50%;
    animation: floatSlow 10s ease-in-out infinite 2s;
}

/* — Scroll Indicator — */
@keyframes scrollBounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(8px);
    }

    60% {
        transform: translateY(4px);
    }
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-muted);
    font-size: 0.75rem;
    font-family: var(--font-mono);
    letter-spacing: 2px;
    text-transform: uppercase;
    cursor: pointer;
    transition: color var(--transition);
}

.scroll-indicator:hover {
    color: var(--color-accent);
}

.scroll-indicator .scroll-arrow {
    font-size: 1.2rem;
    animation: scrollBounce 2s ease infinite;
}

/* — Skeleton Loading — */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

.skeleton {
    background: linear-gradient(90deg,
            var(--color-surface) 25%,
            var(--color-surface-hover) 50%,
            var(--color-surface) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

.skeleton-card {
    height: 220px;
    border-radius: var(--radius);
}

.skeleton-text {
    height: 16px;
    margin-bottom: 12px;
}

.skeleton-text.short {
    width: 60%;
}

.skeleton-text.medium {
    width: 80%;
}

/* — Floating Dots Background — */
.floating-dots {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.dot {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--color-accent);
    opacity: 0.25;
    border-radius: 50%;
    animation: floatDot linear infinite;
}

@keyframes floatDot {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    90% {
        opacity: 1;
    }

    100% {
        transform: translateY(-10vh) scale(1);
        opacity: 0;
    }
}

/* — Pulse Glow — */
@keyframes pulseGlow {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(0, 255, 209, 0.2);
    }

    50% {
        box-shadow: 0 0 20px 4px rgba(0, 255, 209, 0.15);
    }
}

.pulse-glow {
    animation: pulseGlow 3s ease-in-out 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;
    }

    body {
        opacity: 1;
        animation: none;
    }

    #main-nav {
        animation: none;
    }
}