/* ================================================================
   ScriptaDocX — Animations
   ================================================================ */

:root {
    --ease-out-quart: cubic-bezier(0.165, 0.84, 0.44, 1);
    --ease-out-cubic: cubic-bezier(0.215, 0.61, 0.355, 1);
    --ease-out-quint: cubic-bezier(0.23, 1, 0.32, 1);
    --ease-in-out-cubic: cubic-bezier(0.645, 0.045, 0.355, 1);
}

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

@keyframes hero-enter {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.97);
        filter: blur(4px);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0px);
    }
}

@keyframes card-enter {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(200%); }
}

/* Floating document cards */
@keyframes float-1 {
    0%, 100% { transform: translate(0, 0) rotate(-6deg); }
    50% { transform: translate(12px, -18px) rotate(-3deg); }
}

@keyframes float-2 {
    0%, 100% { transform: translate(0, 0) rotate(4deg); }
    50% { transform: translate(-15px, -12px) rotate(7deg); }
}

@keyframes float-3 {
    0%, 100% { transform: translate(0, 0) rotate(-3deg); }
    50% { transform: translate(8px, -22px) rotate(-6deg); }
}

@keyframes float-4 {
    0%, 100% { transform: translate(0, 0) rotate(8deg); }
    50% { transform: translate(-10px, -14px) rotate(5deg); }
}

@keyframes float-5 {
    0%, 100% { transform: translate(0, 0) rotate(-5deg); }
    50% { transform: translate(14px, -10px) rotate(-2deg); }
}

/* Card shimmer sweep */
@keyframes card-shimmer {
    0% { transform: translateX(-100%) rotate(15deg); }
    100% { transform: translateX(300%) rotate(15deg); }
}

/* Connecting lines draw */
@keyframes line-draw {
    from { stroke-dashoffset: 1000; }
    to { stroke-dashoffset: 0; }
}

/* Particles float up */
@keyframes particle-rise {
    0% {
        transform: translateY(0) scale(1);
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.6;
    }
    100% {
        transform: translateY(-120px) scale(0.3);
        opacity: 0;
    }
}

/* Glow orb drift */
@keyframes orb-drift {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -20px) scale(1.05); }
    66% { transform: translate(-20px, 15px) scale(0.96); }
}

/* Scroll mouse */
@keyframes scroll-wheel {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    40% {
        opacity: 1;
    }
    100% {
        transform: translateY(8px);
        opacity: 0;
    }
}

/* Number count */
@keyframes count-pop {
    0% { transform: scale(0.8); opacity: 0; }
    60% { transform: scale(1.05); }
    100% { transform: scale(1); opacity: 1; }
}

/* Badge pulse */
@keyframes badge-glow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(108, 99, 255, 0.15); }
    50% { box-shadow: 0 0 0 8px rgba(108, 99, 255, 0); }
}

/* CTA arrow nudge */
@keyframes arrow-nudge {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(3px); }
}

/* View enter */
@keyframes view-enter {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ================================================================
   HERO ANIMATIONS
   ================================================================ */

.anim-hero {
    opacity: 0;
    will-change: transform, opacity, filter;
}

.anim-hero.visible {
    animation: hero-enter 700ms var(--ease-out-quint) forwards;
}

.anim-hero[data-delay="0"].visible { animation-delay: 0ms; }
.anim-hero[data-delay="1"].visible { animation-delay: 120ms; }
.anim-hero[data-delay="2"].visible { animation-delay: 240ms; }
.anim-hero[data-delay="3"].visible { animation-delay: 380ms; }
.anim-hero[data-delay="4"].visible { animation-delay: 520ms; }
.anim-hero[data-delay="5"].visible { animation-delay: 660ms; }

/* ================================================================
   FLOATING DOCUMENT CARDS
   ================================================================ */

.float-card {
    position: absolute;
    width: 90px;
    height: 110px;
    border-radius: 8px;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    padding: 12px 10px;
    opacity: 0;
    pointer-events: none;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .float-card {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
}

.float-card.visible {
    animation: fade-in 800ms var(--ease-out-cubic) forwards;
}

/* Shimmer on cards */
.float-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 40%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(108, 99, 255, 0.04), transparent);
    animation: card-shimmer 5s ease infinite;
    animation-delay: inherit;
}

.float-card__inner {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.float-card__line {
    height: 4px;
    border-radius: 2px;
    background: var(--border-default);
    opacity: 0.5;
}

.float-card__block {
    width: 100%;
    height: 28px;
    border-radius: 4px;
    background: var(--accent-muted);
    opacity: 0.4;
}

.float-card--1 {
    top: 8%;
    left: 6%;
    animation-delay: 200ms;
    animation: float-1 8s var(--ease-in-out-cubic) infinite;
    animation-delay: 0s;
}
.float-card--1.visible {
    animation: float-1 8s var(--ease-in-out-cubic) infinite, fade-in 800ms var(--ease-out-cubic) forwards;
    animation-delay: 300ms;
}

.float-card--2 {
    top: 15%;
    right: 8%;
    animation: float-2 9s var(--ease-in-out-cubic) infinite;
}
.float-card--2.visible {
    animation: float-2 9s var(--ease-in-out-cubic) infinite, fade-in 800ms var(--ease-out-cubic) forwards;
    animation-delay: 500ms;
}

.float-card--3 {
    bottom: 18%;
    left: 10%;
    width: 80px;
    height: 100px;
    animation: float-3 10s var(--ease-in-out-cubic) infinite;
}
.float-card--3.visible {
    animation: float-3 10s var(--ease-in-out-cubic) infinite, fade-in 800ms var(--ease-out-cubic) forwards;
    animation-delay: 700ms;
}

.float-card--4 {
    bottom: 25%;
    right: 6%;
    width: 75px;
    height: 95px;
    animation: float-4 7s var(--ease-in-out-cubic) infinite;
}
.float-card--4.visible {
    animation: float-4 7s var(--ease-in-out-cubic) infinite, fade-in 800ms var(--ease-out-cubic) forwards;
    animation-delay: 400ms;
}

.float-card--5 {
    top: 50%;
    left: 3%;
    width: 70px;
    height: 85px;
    animation: float-5 11s var(--ease-in-out-cubic) infinite;
}
.float-card--5.visible {
    animation: float-5 11s var(--ease-in-out-cubic) infinite, fade-in 800ms var(--ease-out-cubic) forwards;
    animation-delay: 600ms;
}

/* ================================================================
   CONNECTING LINES
   ================================================================ */

.connect-lines {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.connect-line {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
}

.connect-lines.visible .connect-line--1 {
    animation: line-draw 3s var(--ease-out-quart) forwards;
    animation-delay: 800ms;
}

.connect-lines.visible .connect-line--2 {
    animation: line-draw 3s var(--ease-out-quart) forwards;
    animation-delay: 1200ms;
}

.connect-lines.visible .connect-line--3 {
    animation: line-draw 3s var(--ease-out-quart) forwards;
    animation-delay: 1500ms;
}

/* ================================================================
   PARTICLES
   ================================================================ */

.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0;
    pointer-events: none;
    animation: particle-rise 6s linear infinite;
}

.particle--1 { left: 15%; bottom: 30%; animation-delay: 0s; }
.particle--2 { left: 25%; bottom: 20%; animation-delay: 1.5s; }
.particle--3 { right: 20%; bottom: 25%; animation-delay: 0.8s; background: #f7436d; }
.particle--4 { right: 30%; bottom: 35%; animation-delay: 2.2s; }
.particle--5 { left: 40%; bottom: 15%; animation-delay: 3.5s; background: #22c55e; }
.particle--6 { right: 15%; bottom: 40%; animation-delay: 1s; }
.particle--7 { left: 8%; bottom: 45%; animation-delay: 4s; background: #f7436d; }
.particle--8 { right: 35%; bottom: 10%; animation-delay: 2.8s; }

/* ================================================================
   GLOW ORBS
   ================================================================ */

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.1;
    animation: orb-drift 14s var(--ease-in-out-cubic) infinite;
    will-change: transform;
    pointer-events: none;
}

[data-theme="light"] .glow-orb { opacity: 0.04; }

.glow-orb--1 {
    width: 350px;
    height: 350px;
    background: var(--accent);
    top: -60px;
    left: -60px;
}

.glow-orb--2 {
    width: 280px;
    height: 280px;
    background: #f7436d;
    bottom: -40px;
    right: -50px;
    animation-delay: -5s;
}

/* ================================================================
   SCROLL MOUSE
   ================================================================ */

.scroll-indicator {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    z-index: 1;
    opacity: 0;
    animation: fade-in 600ms var(--ease-out-cubic) forwards;
    animation-delay: 1200ms;
}

.scroll-indicator span {
    font-size: 0.62rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.scroll-mouse {
    width: 20px;
    height: 32px;
    border: 2px solid var(--border-strong);
    border-radius: 10px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.scroll-wheel {
    width: 3px;
    height: 6px;
    border-radius: 2px;
    background: var(--text-muted);
    animation: scroll-wheel 1.5s var(--ease-out-cubic) infinite;
}

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

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

/* ================================================================
   LANDING BADGE GLOW
   ================================================================ */

.landing-badge {
    animation: badge-glow 3s ease infinite;
    animation-delay: 1.5s;
}

/* ================================================================
   CTA ARROW
   ================================================================ */

.landing-cta--filled svg {
    transition: transform 150ms ease;
}

.landing-cta--filled:hover svg {
    animation: arrow-nudge 0.6s ease infinite;
}

/* ================================================================
   STATS COUNT-UP
   ================================================================ */

.landing-stat__number {
    display: inline-block;
}

.landing-stat__number.counted {
    animation: count-pop 400ms var(--ease-out-quart) forwards;
}

/* ================================================================
   TOOL CARDS
   ================================================================ */

.tool-card {
    opacity: 0;
    animation: card-enter 400ms var(--ease-out-cubic) forwards;
    will-change: transform, opacity;
}

/* Hover — ease for hover states */
.tool-card {
    transition: border-color 150ms ease,
                box-shadow 200ms ease,
                transform 200ms var(--ease-out-cubic);
}

.tool-card::before {
    transition: transform 200ms ease;
}

.tool-card::after {
    transition: opacity 200ms ease;
}

.tool-card:active:not(:disabled) {
    transform: scale(0.97);
    transition: transform 80ms var(--ease-out-cubic);
}

/* ================================================================
   VIEW TRANSITION
   ================================================================ */

.view-enter {
    animation: view-enter 280ms var(--ease-out-quart) forwards;
}

/* ================================================================
   UI TRANSITIONS — ease for hover states
   ================================================================ */

.nav-trigger { transition: color 120ms ease, background 120ms ease; }
.nav-trigger svg { transition: transform 150ms var(--ease-out-cubic); }
.nav-dropdown:hover .nav-trigger svg { transform: rotate(180deg); }
.theme-toggle { transition: border-color 120ms ease, color 120ms ease, background 120ms ease; }
.header-link { transition: color 120ms ease, border-color 120ms ease, background 120ms ease; }
.back-button { transition: color 120ms ease, border-color 120ms ease, background 120ms ease; }
.footer-social-link { transition: color 120ms ease, background 120ms ease; }
.mobile-menu-toggle span { transition: transform 200ms var(--ease-out-cubic), opacity 150ms ease; }
.mobile-nav-overlay { transition: opacity 200ms var(--ease-out-cubic); }

.action-btn:active:not(:disabled),
.landing-cta:active,
.result-btn:active {
    transform: scale(0.97);
    transition: transform 80ms var(--ease-out-cubic);
}

.icon-sun, .icon-moon {
    transition: opacity 200ms ease, transform 200ms ease;
}

.toast {
    transition: opacity 200ms var(--ease-out-cubic), transform 200ms var(--ease-out-cubic);
}

.results-card.visible {
    animation: card-enter 250ms var(--ease-out-quart) forwards;
}

.upload-zone { transition: border-color 150ms ease; }
.upload-zone::before { transition: opacity 200ms ease; }

input[type="range"]::-webkit-slider-thumb {
    transition: transform 120ms ease, box-shadow 120ms ease;
}

/* Theme transition */
body, .header, .footer, .settings-card, .results-card,
.stat-box, .text-output, .file-list-item, .tool-hero-icon,
.float-card {
    transition: background-color 350ms var(--ease-in-out-cubic),
                border-color 350ms var(--ease-in-out-cubic),
                color 350ms var(--ease-in-out-cubic);
}

/* ================================================================
   TOUCH DEVICES
   ================================================================ */

@media (hover: hover) and (pointer: fine) {
    .tool-card:hover {
        transform: translateY(-3px);
        border-color: var(--accent);
        box-shadow: 0 6px 24px var(--accent-glow);
    }
    .tool-card:hover::before { transform: scaleX(1); }
    .tool-card:hover::after { opacity: 1; }
}

@media (hover: none) {
    .tool-card:hover {
        transform: none;
        border-color: var(--border-subtle);
        box-shadow: none;
    }
    .tool-card:hover::before { transform: scaleX(0); }
    .tool-card:hover::after { opacity: 0; }
}

/* ================================================================
   RESPONSIVE — hide float cards on mobile
   ================================================================ */

@media (max-width: 768px) {
    .float-card { display: none; }
    .connect-lines { display: none; }
    .particle { display: none; }
}

/* ================================================================
   REDUCED MOTION
   ================================================================ */

@media (prefers-reduced-motion: reduce) {
    .anim-hero,
    .tool-card,
    .results-card.visible,
    .view-enter,
    .scroll-indicator {
        animation: none;
        opacity: 1;
        transform: none;
        filter: none;
    }

    .anim-hero.visible {
        animation: none;
        opacity: 1;
    }

    .float-card,
    .float-card.visible {
        animation: none;
        opacity: 0.5;
    }

    .float-card::after { animation: none; }
    .connect-line { animation: none; stroke-dashoffset: 0; }
    .particle { animation: none; }
    .glow-orb { animation: none; }
    .scroll-wheel { animation: none; }
    .landing-badge { animation: none; }
    .landing-cta--filled svg { animation: none; }
    .landing-stat__number.counted { animation: none; }

    .toast,
    .tool-card,
    .upload-zone,
    .upload-zone::before,
    .tool-card::before,
    .tool-card::after,
    .action-btn,
    .landing-cta,
    .result-btn,
    .nav-trigger,
    .theme-toggle,
    .header-link,
    .back-button,
    .footer-social-link,
    .mobile-nav-overlay,
    .mobile-menu-toggle span,
    .icon-sun,
    .icon-moon,
    input[type="range"]::-webkit-slider-thumb {
        transition: none;
    }

    body, .header, .footer, .settings-card, .results-card,
    .stat-box, .text-output, .file-list-item, .tool-hero-icon,
    .float-card {
        transition: none;
    }
}