/* ========================================
   CELESTIAL FLOW - Animation System
   Professional scroll-reveal & micro-interactions
   ======================================== */

/* ========================================
   1. SCROLL REVEAL - Base System
   ======================================== */

/* Base reveal state - hidden initially */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition:
        opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: opacity, transform;
}

/* Revealed state */
.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Fade with blur - "Nebula" effect */
.reveal-blur {
    opacity: 0;
    transform: translateY(30px);
    filter: blur(10px);
    transition:
        opacity 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        transform 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        filter 0.9s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: opacity, transform, filter;
}

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

/* Fade from left */
.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition:
        opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: opacity, transform;
}

.reveal-left.revealed {
    opacity: 1;
    transform: translateX(0);
}

/* Fade from right */
.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition:
        opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: opacity, transform;
}

.reveal-right.revealed {
    opacity: 1;
    transform: translateX(0);
}

/* Scale reveal - "Cosmic Pop" */
.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition:
        opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        transform 0.7s cubic-bezier(0.34, 1.56, 0.64, 1);
    will-change: opacity, transform;
}

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

/* ========================================
   2. STAGGER ANIMATIONS - For groups
   ======================================== */

/* Container for staggered children */
.reveal-stagger > * {
    opacity: 0;
    transform: translateY(30px);
    transition:
        opacity 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: opacity, transform;
}

.reveal-stagger.revealed > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger.revealed > *:nth-child(2) { transition-delay: 100ms; }
.reveal-stagger.revealed > *:nth-child(3) { transition-delay: 200ms; }
.reveal-stagger.revealed > *:nth-child(4) { transition-delay: 300ms; }
.reveal-stagger.revealed > *:nth-child(5) { transition-delay: 400ms; }
.reveal-stagger.revealed > *:nth-child(6) { transition-delay: 500ms; }
.reveal-stagger.revealed > *:nth-child(7) { transition-delay: 600ms; }
.reveal-stagger.revealed > *:nth-child(8) { transition-delay: 700ms; }

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

/* Stagger with scale effect */
.reveal-stagger-scale > * {
    opacity: 0;
    transform: scale(0.85) translateY(20px);
    transition:
        opacity 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    will-change: opacity, transform;
}

.reveal-stagger-scale.revealed > *:nth-child(1) { transition-delay: 0ms; }
.reveal-stagger-scale.revealed > *:nth-child(2) { transition-delay: 120ms; }
.reveal-stagger-scale.revealed > *:nth-child(3) { transition-delay: 240ms; }
.reveal-stagger-scale.revealed > *:nth-child(4) { transition-delay: 360ms; }
.reveal-stagger-scale.revealed > *:nth-child(5) { transition-delay: 480ms; }
.reveal-stagger-scale.revealed > *:nth-child(6) { transition-delay: 600ms; }

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

/* ========================================
   3. AURORA TITLE - Animated gradient text
   ======================================== */

.aurora-title {
    background: linear-gradient(
        135deg,
        var(--color-primary) 0%,
        var(--color-secondary) 25%,
        var(--color-primary) 50%,
        var(--color-secondary) 75%,
        var(--color-primary) 100%
    );
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: aurora-shift 8s ease-in-out infinite;
}

@keyframes aurora-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Title reveal - text appears with gradient sweep */
.title-reveal {
    opacity: 0;
    background: linear-gradient(
        90deg,
        var(--color-primary) 0%,
        var(--color-secondary) 50%,
        var(--color-primary) 100%
    );
    background-size: 200% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: opacity 0.6s ease;
}

.title-reveal.revealed {
    opacity: 1;
    animation: title-sweep 1.2s ease-out forwards;
}

@keyframes title-sweep {
    0% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ========================================
   4. GLOW EFFECTS - Breathing & Pulse
   ======================================== */

/* Subtle breathing glow */
.glow-breathe {
    animation: glow-breathe 4s ease-in-out infinite;
}

@keyframes glow-breathe {
    0%, 100% {
        filter: drop-shadow(0 0 8px var(--color-primary-glow));
    }
    50% {
        filter: drop-shadow(0 0 20px var(--color-primary-glow));
    }
}

/* Card glow on reveal */
.card-glow-reveal {
    position: relative;
    overflow: hidden;
}

.card-glow-reveal::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        transparent 0%,
        rgba(153, 69, 255, 0.1) 50%,
        transparent 100%
    );
    opacity: 0;
    transition: opacity 0.6s ease;
}

.card-glow-reveal.revealed::before {
    animation: card-light-sweep 1s ease-out forwards;
}

@keyframes card-light-sweep {
    0% {
        opacity: 1;
        transform: translateX(-100%);
    }
    100% {
        opacity: 0;
        transform: translateX(100%);
    }
}

/* Border glow animation */
.border-glow {
    position: relative;
}

.border-glow::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    background: linear-gradient(
        135deg,
        var(--color-primary),
        var(--color-secondary),
        var(--color-primary)
    );
    background-size: 200% 200%;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.4s ease;
    animation: border-rotate 3s linear infinite;
}

.border-glow:hover::after {
    opacity: 0.6;
}

@keyframes border-rotate {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

/* ========================================
   5. HERO ANIMATIONS - Cosmic Entrance
   ======================================== */

/* Hero title entrance */
.hero-title-animate {
    opacity: 0;
    transform: scale(0.9) translateY(20px);
    filter: blur(10px);
    animation: hero-title-enter 1s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.2s forwards;
}

@keyframes hero-title-enter {
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
        filter: blur(0);
    }
}

/* Mascot landing animation */
.mascot-land {
    opacity: 0;
    transform: translateY(-30px) scale(0.95);
    animation: mascot-land 1s cubic-bezier(0.34, 1.56, 0.64, 1) 0.4s forwards;
}

@keyframes mascot-land {
    0% {
        opacity: 0;
        transform: translateY(-30px) scale(0.95);
    }
    60% {
        opacity: 1;
        transform: translateY(5px) scale(1.02);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Hero buttons stagger */
.hero-buttons-animate > * {
    opacity: 0;
    transform: translateY(20px);
}

.hero-buttons-animate > *:nth-child(1) {
    animation: hero-btn-enter 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.7s forwards;
}

.hero-buttons-animate > *:nth-child(2) {
    animation: hero-btn-enter 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.85s forwards;
}

.hero-buttons-animate > *:nth-child(3) {
    animation: hero-btn-enter 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) 1s forwards;
}

@keyframes hero-btn-enter {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Stats counter animation container */
.stats-animate {
    opacity: 0;
    transform: translateY(20px);
    animation: stats-enter 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 1s forwards;
}

@keyframes stats-enter {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   6. ENHANCED HOVER EFFECTS
   ======================================== */

/* Gravity lift - enhanced card hover */
.gravity-lift {
    transition:
        transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
        box-shadow 0.4s ease;
}

.gravity-lift:hover {
    transform: translateY(-12px);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 0 30px var(--color-primary-glow);
}

/* Icon float on hover */
.icon-float-hover {
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.gravity-lift:hover .icon-float-hover,
.card:hover .icon-float-hover {
    transform: translateY(-5px) rotate(5deg);
}

/* Subtle rotation on hover */
.hover-rotate {
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.hover-rotate:hover {
    transform: rotate(5deg) scale(1.05);
}

/* ========================================
   7. SECTION DIVIDERS - Gradient Fades
   ======================================== */

.section-divider {
    position: relative;
    padding-top: var(--space-3xl);
}

.section-divider::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: min(400px, 80%);
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--color-primary) 20%,
        var(--color-secondary) 50%,
        var(--color-primary) 80%,
        transparent 100%
    );
    opacity: 0.4;
}

/* ========================================
   8. FAQ SMOOTH ACCORDION
   ======================================== */

.faq-answer {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition:
        max-height 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        opacity 0.4s ease,
        padding 0.4s ease;
    padding: 0 var(--space-lg);
}

.faq-item.open .faq-answer {
    max-height: 300px;
    opacity: 1;
    padding: var(--space-md) var(--space-lg) var(--space-lg);
}

.faq-icon {
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.faq-item.open .faq-icon {
    transform: rotate(45deg);
}

/* ========================================
   9. BUTTON MICRO-INTERACTIONS
   ======================================== */

/* Ripple effect container */
.btn-ripple {
    position: relative;
    overflow: hidden;
}

.btn-ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease, opacity 0.6s ease;
    opacity: 0;
}

.btn-ripple:active::after {
    width: 300px;
    height: 300px;
    opacity: 0;
    transition: 0s;
}

/* Copy button success state */
.copy-success {
    animation: copy-success 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes copy-success {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* Ripple effect element */
.ripple-effect {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out forwards;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* ========================================
   10. COUNTER ANIMATION (for stats)
   ======================================== */

.counter-animate {
    display: inline-block;
}

/* ========================================
   11. PAGE TRANSITION
   ======================================== */

.page-transition-enter {
    animation: page-enter 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

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

/* ========================================
   12. LOADING SKELETON
   ======================================== */

.skeleton {
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0.03) 0%,
        rgba(255, 255, 255, 0.08) 50%,
        rgba(255, 255, 255, 0.03) 100%
    );
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
}

@keyframes skeleton-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ========================================
   13. PARALLAX HELPERS
   ======================================== */

.parallax-slow {
    will-change: transform;
    transition: transform 0.1s linear;
}

.parallax-medium {
    will-change: transform;
    transition: transform 0.05s linear;
}

/* ========================================
   REDUCED MOTION - Accessibility
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    .reveal,
    .reveal-blur,
    .reveal-left,
    .reveal-right,
    .reveal-scale,
    .reveal-stagger > *,
    .reveal-stagger-scale > * {
        opacity: 1;
        transform: none;
        filter: none;
        transition: none;
        animation: none;
    }

    .aurora-title,
    .title-reveal,
    .glow-breathe,
    .hero-title-animate,
    .mascot-land,
    .hero-buttons-animate > *,
    .stats-animate {
        opacity: 1;
        transform: none;
        filter: none;
        animation: none;
    }

    .gravity-lift:hover {
        transform: translateY(-4px);
    }

    .faq-answer {
        transition: none;
    }
}

/* ========================================
   LOW GRAPHICS MODE
   ======================================== */

.low-graphics-mode .reveal,
.low-graphics-mode .reveal-blur,
.low-graphics-mode .reveal-left,
.low-graphics-mode .reveal-right,
.low-graphics-mode .reveal-scale,
.low-graphics-mode .reveal-stagger > *,
.low-graphics-mode .reveal-stagger-scale > * {
    opacity: 1;
    transform: none;
    filter: none;
    transition: opacity 0.2s ease;
}

.low-graphics-mode .aurora-title {
    animation: none;
    background-size: 100% 100%;
}

.low-graphics-mode .glow-breathe {
    animation: none;
}