/* ============================================
   ANIMATIONS - GLITCH, NEON, EFFECTS
   ============================================ */

/* ===== KEYFRAMES ===== */

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

@keyframes blink-fast {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.85); }
}

@keyframes pulse-glow {
    0%, 100% {
        text-shadow:
            0 0 5px var(--color-cyan),
            0 0 10px var(--color-cyan),
            0 0 20px var(--color-cyan);
    }
    50% {
        text-shadow:
            0 0 10px var(--color-cyan),
            0 0 25px var(--color-cyan),
            0 0 40px var(--color-cyan),
            0 0 60px var(--color-magenta);
    }
}

@keyframes pulse-fast {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

@keyframes scanline-move {
    0% { background-position: 0 0; }
    100% { background-position: 0 100vh; }
}

@keyframes scan-line {
    0% { background-position: 0 -100%; }
    100% { background-position: 0 100%; }
}

@keyframes line-pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

@keyframes gradient-flow {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

@keyframes bob {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
}

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

@keyframes slide-in-left {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slide-in-right {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===== GLITCH EFFECT ===== */
.glitch {
    position: relative;
    display: inline-block;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.glitch::before {
    color: var(--color-cyan);
    z-index: -1;
    animation: glitch-1 3s infinite linear alternate-reverse;
    clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
}

.glitch::after {
    color: var(--color-magenta);
    z-index: -2;
    animation: glitch-2 2.5s infinite linear alternate-reverse;
    clip-path: polygon(0 60%, 100% 60%, 100% 100%, 0 100%);
}

@keyframes glitch-1 {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(-2px, 1px); }
    40% { transform: translate(-1px, -1px); }
    60% { transform: translate(2px, 1px); }
    80% { transform: translate(1px, -1px); }
}

@keyframes glitch-2 {
    0%, 100% { transform: translate(0); }
    20% { transform: translate(2px, -1px); }
    40% { transform: translate(1px, 1px); }
    60% { transform: translate(-2px, -1px); }
    80% { transform: translate(-1px, 1px); }
}

/* Hover-trigger glitch */
.glitch-hover {
    position: relative;
    display: inline-block;
    transition: text-shadow 0.1s ease;
}

.glitch-hover:hover {
    animation: glitch-flash 0.4s linear;
}

@keyframes glitch-flash {
    0% { text-shadow: 0 0 5px var(--color-cyan); }
    20% { text-shadow: -2px 0 var(--color-magenta), 2px 0 var(--color-cyan); }
    40% { text-shadow: 2px 0 var(--color-magenta), -2px 0 var(--color-cyan); }
    60% { text-shadow: -2px 0 var(--color-magenta), 2px 0 var(--color-cyan); }
    80% { text-shadow: 2px 0 var(--color-magenta), -2px 0 var(--color-cyan); }
    100% { text-shadow: 0 0 5px var(--color-cyan); }
}

/* ===== TEXT GLOW ===== */
.text-glow-cyan {
    color: var(--color-cyan);
    text-shadow: 0 0 5px var(--color-cyan), 0 0 10px var(--color-cyan);
}

.text-glow-magenta {
    color: var(--color-magenta);
    text-shadow: 0 0 5px var(--color-magenta), 0 0 10px var(--color-magenta);
}

/* ===== ENTRANCE ANIMATIONS ===== */
.fade-in {
    opacity: 0;
    animation: fade-in-up 0.8s ease forwards;
}

.slide-in-left {
    opacity: 0;
    animation: slide-in-left 0.8s ease forwards;
}

.slide-in-right {
    opacity: 0;
    animation: slide-in-right 0.8s ease forwards;
}

/* Reveal on scroll */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Stagger children */
.reveal-stagger > * {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-stagger.visible > * {
    opacity: 1;
    transform: translateY(0);
}

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

/* ===== HERO ENTRANCE ===== */
.hero-frame {
    animation: fade-in-up 1s 0.5s ease backwards;
}

.hero-tag {
    animation: fade-in-up 0.8s 0.7s ease backwards;
}

.hero-title .glitch:nth-child(1) {
    animation: fade-in-up 0.8s 0.9s ease backwards;
}

.hero-title .glitch:nth-child(2) {
    animation: fade-in-up 0.8s 1.1s ease backwards;
}

.hero-subtitle {
    animation: fade-in-up 0.8s 1.3s ease backwards;
}

.hero-meta {
    animation: fade-in-up 0.8s 1.5s ease backwards;
}

.hero-actions {
    animation: fade-in-up 0.8s 1.7s ease backwards;
}

/* ===== SCROLL FRAME WIPE ===== */
.frame-corner {
    animation: corner-pulse 3s ease-in-out infinite;
}

.frame-corner.tl { animation-delay: 0s; }
.frame-corner.tr { animation-delay: 0.3s; }
.frame-corner.bl { animation-delay: 0.6s; }
.frame-corner.br { animation-delay: 0.9s; }

@keyframes corner-pulse {
    0%, 100% {
        opacity: 0.6;
        box-shadow: 0 0 0 var(--color-cyan);
    }
    50% {
        opacity: 1;
        box-shadow: 0 0 8px var(--color-cyan);
    }
}

/* ===== HOLO CARD TILT (3D) ===== */
.holo-card[data-tilt] {
    transform-style: preserve-3d;
    perspective: 1000px;
    transition: transform 0.1s ease-out, box-shadow 0.4s ease, border-color 0.4s ease;
}

/* ===== HOVERABLE ELEMENTS ===== */
a:not(.cyber-btn):hover,
.contact-card:hover,
.project-card:hover {
    text-shadow: 0 0 8px currentColor;
}

/* ===== LINK FLICKER ===== */
@keyframes flicker {
    0%, 19.999%, 22%, 62.999%, 64%, 64.999%, 70%, 100% {
        opacity: 1;
    }
    20%, 21.999%, 63%, 63.999%, 65%, 69.999% {
        opacity: 0.4;
    }
}

.flicker {
    animation: flicker 4s 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;
    }

    .scanlines, .matrix-rain {
        display: none;
    }
}