/* ============================================
   Animations — Keyframes, Scroll Reveal, Hover FX
   ============================================ */

/* ── Keyframes ── */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

@keyframes gridPan {
    from { transform: translate(0, 0); }
    to { transform: translate(-60px, -60px); }
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0.4;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

@keyframes counterUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ── Scroll Reveal Base ── */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s var(--ease-out),
                transform 0.7s var(--ease-out);
}

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

/* Reveal Variants */
.reveal--left {
    transform: translateX(-30px);
}

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

.reveal--right {
    transform: translateX(30px);
}

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

.reveal--scale {
    transform: scale(0.95);
}

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

/* Staggered Children */
.reveal-stagger > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s var(--ease-out),
                transform 0.5s var(--ease-out);
}

.reveal-stagger--visible > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger--visible > *:nth-child(2) { transition-delay: 80ms; }
.reveal-stagger--visible > *:nth-child(3) { transition-delay: 160ms; }
.reveal-stagger--visible > *:nth-child(4) { transition-delay: 240ms; }
.reveal-stagger--visible > *:nth-child(5) { transition-delay: 320ms; }
.reveal-stagger--visible > *:nth-child(6) { transition-delay: 400ms; }
.reveal-stagger--visible > *:nth-child(7) { transition-delay: 480ms; }
.reveal-stagger--visible > *:nth-child(8) { transition-delay: 560ms; }

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

/* ── Hero Animations ── */
.hero__grid {
    animation: gridPan 20s linear infinite;
}

.hero__glow {
    animation: glowPulse 6s ease-in-out infinite;
}

.hero__content {
    animation: fadeInUp 0.8s var(--ease-out) 0.2s both;
}

.hero__stats {
    animation: fadeInUp 0.8s var(--ease-out) 0.6s both;
}

/* ── Hover Effects ── */
.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.hover-glow {
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.hover-glow:hover {
    box-shadow: var(--shadow-glow);
    border-color: var(--color-accent);
}

/* ── Loading / Skeleton ── */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--color-bg-elevated) 25%,
        var(--color-bg-surface) 50%,
        var(--color-bg-elevated) 75%
    );
    background-size: 200% 100%;
    animation: pulse 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

/* ── 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 {
        opacity: 1;
        transform: none;
    }

    .reveal-stagger > * {
        opacity: 1;
        transform: none;
    }

    html {
        scroll-behavior: auto;
    }
}