/* ============================================================
   PDF Editor — Animations (animations.css)
   Scroll reveals, morphing transitions, liquid glass effects
   ============================================================ */

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

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

/* Stagger delays for grid children */
.reveal-stagger > .reveal:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger > .reveal:nth-child(2) { transition-delay: 50ms; }
.reveal-stagger > .reveal:nth-child(3) { transition-delay: 100ms; }
.reveal-stagger > .reveal:nth-child(4) { transition-delay: 150ms; }
.reveal-stagger > .reveal:nth-child(5) { transition-delay: 200ms; }
.reveal-stagger > .reveal:nth-child(6) { transition-delay: 250ms; }
.reveal-stagger > .reveal:nth-child(7) { transition-delay: 300ms; }
.reveal-stagger > .reveal:nth-child(8) { transition-delay: 350ms; }
.reveal-stagger > .reveal:nth-child(9) { transition-delay: 400ms; }
.reveal-stagger > .reveal:nth-child(10) { transition-delay: 450ms; }
.reveal-stagger > .reveal:nth-child(11) { transition-delay: 500ms; }
.reveal-stagger > .reveal:nth-child(12) { transition-delay: 550ms; }
.reveal-stagger > .reveal:nth-child(n+13) { transition-delay: 600ms; }

/* ── Reveal Variants ─────────────────────────────────────── */
.reveal-up { transform: translateY(40px); }
.reveal-down { transform: translateY(-40px); }
.reveal-left { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }
.reveal-scale {
    transform: scale(0.9);
    opacity: 0;
}
.reveal-up.visible,
.reveal-down.visible,
.reveal-left.visible,
.reveal-right.visible {
    transform: translate(0);
}
.reveal-scale.visible {
    transform: scale(1);
    opacity: 1;
}

/* ── Float Animation ─────────────────────────────────────── */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

.float {
    animation: float 6s ease-in-out infinite;
}
.float-delayed {
    animation: float 6s ease-in-out infinite;
    animation-delay: -3s;
}

/* ── Glow Pulse ──────────────────────────────────────────── */
@keyframes glow-pulse {
    0%, 100% { box-shadow: 0 0 20px var(--accent-glow); }
    50% { box-shadow: 0 0 40px var(--accent-glow), 0 0 60px rgba(var(--accent-primary), 0.1); }
}

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

/* ── Gradient Shift ──────────────────────────────────────── */
@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.gradient-animated {
    background-size: 200% 200%;
    animation: gradient-shift 8s ease infinite;
}

/* ── Hero Entrance ───────────────────────────────────────── */
@keyframes hero-entrance {
    0% {
        opacity: 0;
        transform: translateY(30px) scale(0.98);
        filter: blur(4px);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

.hero-enter {
    animation: hero-entrance 0.8s var(--ease-out-expo) forwards;
}

.hero-enter-delay-1 { animation-delay: 0.1s; opacity: 0; }
.hero-enter-delay-2 { animation-delay: 0.25s; opacity: 0; }
.hero-enter-delay-3 { animation-delay: 0.4s; opacity: 0; }
.hero-enter-delay-4 { animation-delay: 0.55s; opacity: 0; }

/* ── Counter Animation ───────────────────────────────────── */
@keyframes count-up {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.count-animate {
    animation: count-up 0.6s var(--ease-out-expo) forwards;
}

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

.spin { animation: spin 1s linear infinite; }
.spin-slow { animation: spin 3s linear infinite; }

/* ── Morph Blob Background ───────────────────────────────── */
@keyframes morph-blob {
    0%, 100% {
        border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
        transform: rotate(0deg);
    }
    25% {
        border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%;
    }
    50% {
        border-radius: 50% 60% 30% 60% / 30% 60% 70% 40%;
        transform: rotate(180deg);
    }
    75% {
        border-radius: 60% 30% 60% 40% / 70% 40% 50% 60%;
    }
}

.morph-blob {
    animation: morph-blob 12s ease-in-out infinite;
}

/* ── Hero Background Blobs ───────────────────────────────── */
.hero__blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.15;
    pointer-events: none;
}

.hero__blob--1 {
    width: 400px;
    height: 400px;
    background: var(--accent-primary);
    top: -100px;
    left: -100px;
    animation: morph-blob 12s ease-in-out infinite;
}

.hero__blob--2 {
    width: 300px;
    height: 300px;
    background: var(--accent-secondary);
    bottom: -50px;
    right: -50px;
    animation: morph-blob 10s ease-in-out infinite reverse;
}

.hero__blob--3 {
    width: 200px;
    height: 200px;
    background: var(--accent-tertiary);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: morph-blob 8s ease-in-out infinite;
    animation-delay: -4s;
}

/* ── Liquid Glass Shimmer ────────────────────────────────── */
@keyframes liquid-shimmer {
    0% {
        background-position: -200% center;
    }
    100% {
        background-position: 200% center;
    }
}

.liquid-glass {
    position: relative;
    overflow: hidden;
}

.liquid-glass::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        105deg,
        transparent 40%,
        rgba(255, 255, 255, 0.04) 45%,
        rgba(255, 255, 255, 0.08) 50%,
        rgba(255, 255, 255, 0.04) 55%,
        transparent 60%
    );
    background-size: 200% 100%;
    animation: liquid-shimmer 6s ease-in-out infinite;
    pointer-events: none;
}

/* ── Typing Cursor ───────────────────────────────────────── */
@keyframes blink-cursor {
    0%, 50% { border-color: var(--accent-primary); }
    51%, 100% { border-color: transparent; }
}

.typing-cursor {
    border-right: 2px solid var(--accent-primary);
    animation: blink-cursor 1s step-end infinite;
    padding-right: 2px;
}

/* ── Success Celebration ─────────────────────────────────── */
@keyframes celebrate {
    0% { transform: scale(0.8); opacity: 0; }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); opacity: 1; }
}

.celebrate {
    animation: celebrate 0.6s var(--ease-spring) forwards;
}

/* ── Shake (Error) ───────────────────────────────────────── */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 50%, 90% { transform: translateX(-4px); }
    30%, 70% { transform: translateX(4px); }
}

.shake { animation: shake 0.5s ease-in-out; }

/* ── Page Transition ─────────────────────────────────────── */
.page-transition-enter {
    opacity: 0;
    transform: translateY(10px);
}

.page-transition-active {
    opacity: 1;
    transform: translateY(0);
    transition: all var(--duration-slow) var(--ease-out-expo);
}

/* ── View Transition (for theme morph) ────────────────── */
::view-transition-old(root),
::view-transition-new(root) {
    animation-duration: 0.4s;
    animation-timing-function: var(--ease-out-expo);
}

::view-transition-old(root) {
    animation-name: fade-out;
}

::view-transition-new(root) {
    animation-name: fade-in;
}

@keyframes fade-out {
    to { opacity: 0; }
}

@keyframes fade-in {
    from { opacity: 0; }
}

/* ── Reduce 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; }
}