/* =============================================
   ANIMATIONS — Martín Zapana Portfolio
   ============================================= */

/* ---------- Keyframes ---------- */

/* Fade In */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Typing Cursor Blink */
@keyframes cursorBlink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

/* Spin (loader) */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Pulse Glow */
@keyframes pulseGlow {

    0%,
    100% {
        box-shadow: 0 0 15px rgba(0, 212, 255, 0.4);
    }

    50% {
        box-shadow: 0 0 30px rgba(0, 212, 255, 0.7);
    }
}

/* Float */
@keyframes float {

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

    50% {
        transform: translateY(-10px);
    }
}

/* Scroll Wheel */
@keyframes scrollWheel {
    0% {
        opacity: 1;
        transform: translateY(0);
    }

    100% {
        opacity: 0;
        transform: translateY(12px);
    }
}

/* Gradient shift for home name */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* ---------- Utility Classes ---------- */

/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(25px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Stagger children - add delay-1, delay-2, etc. */
.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;
}

/* Typing cursor */
.typing-cursor {
    animation: cursorBlink 1s infinite;
}

/* Scroll mouse wheel */
.scroll-wheel {
    animation: scrollWheel 1.5s ease-in-out infinite;
}

/* Scroll indicator float */
.scroll-indicator {
    animation: float 3s ease-in-out infinite;
}

/* home name gradient animation */
.home-name {
    background-size: 200% 200%;
    animation: gradientShift 6s ease infinite;
}

/* Timeline marker pulse */
.timeline-marker {
    animation: pulseGlow 3s ease-in-out infinite;
}

/* ---------- Hover Effects ---------- */

/* 3D Card Tilt */
.glass-card {
    transform-style: preserve-3d;
    perspective: 1000px;
}

/* Project card link hover */
.project-card .project-links a {
    transition: all var(--transition-fast);
}

.project-card .project-links a:hover {
    transform: translateY(-2px);
}

/* Button hover ripple */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:active::after {
    width: 300px;
    height: 300px;
}

/* Social link hover */
.social-link {
    position: relative;
    overflow: hidden;
}

.social-link::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
    z-index: -1;
}

.social-link:hover::before {
    opacity: 0.15;
}



/* Form input glow */
.form-group input:focus,
.form-group textarea:focus {
    animation: none;
}

/* ---------- Page Load Animation ---------- */
body {
    animation: fadeIn 0.5s ease;
}

/* ---------- 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;
        transform: none;
    }
}