/**
 * animations.css - 애니메이션 스타일
 * 블로그 자동화 웹사이트
 * Antigravity Effects: 픽셀 비, 무중력 부유, 바운스 인
 */

/* ===========================
   Base Keyframes
   =========================== */

/* Fade Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

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

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

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

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

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

/* Bounce Animations */
@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes bounceOut {
    0% {
        transform: scale(1);
    }
    25% {
        transform: scale(0.95);
    }
    50% {
        opacity: 1;
        transform: scale(1.1);
    }
    100% {
        opacity: 0;
        transform: scale(0.3);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

/* Pulse Animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes pulseScale {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Shake Animation */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

/* Rotate Animation */
@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate(-200deg);
    }
    to {
        opacity: 1;
        transform: rotate(0);
    }
}

/* Slide Animations */
@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

@keyframes slideLeft {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes slideRight {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

/* Float Animation */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

/* Wobble Animation */
@keyframes wobble {
    0% {
        transform: translateX(0%);
    }
    15% {
        transform: translateX(-10px) rotate(-5deg);
    }
    30% {
        transform: translateX(8px) rotate(3deg);
    }
    45% {
        transform: translateX(-6px) rotate(-3deg);
    }
    60% {
        transform: translateX(4px) rotate(2deg);
    }
    75% {
        transform: translateX(-2px) rotate(-1deg);
    }
    100% {
        transform: translateX(0%);
    }
}

/* Typewriter Effect */
@keyframes typewriter {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink {
    0%, 100% {
        border-color: transparent;
    }
    50% {
        border-color: currentColor;
    }
}

/* ===========================
   Antigravity Effects
   =========================== */

/* 픽셀 비 (Pixel Rain) - Digital particles falling */
@keyframes pixelRain {
    0% {
        transform: translateY(-100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}

.pixel-rain-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.pixel {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--color-gray-400);
    opacity: 0;
    animation: pixelRain linear infinite;
}

.pixel:nth-child(odd) {
    background: var(--color-gray-500);
}

.pixel:nth-child(3n) {
    width: 6px;
    height: 6px;
}

.pixel:nth-child(5n) {
    width: 2px;
    height: 2px;
}

/* 무중력 부유 (Zero-G Float) - Weightless floating objects */
@keyframes zeroGFloat {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    25% {
        transform: translate(10px, -15px) rotate(5deg);
    }
    50% {
        transform: translate(-5px, -25px) rotate(-3deg);
    }
    75% {
        transform: translate(-15px, -10px) rotate(2deg);
    }
}

@keyframes zeroGFloatSlow {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg) scale(1);
    }
    33% {
        transform: translate(20px, -20px) rotate(10deg) scale(1.05);
    }
    66% {
        transform: translate(-15px, -30px) rotate(-5deg) scale(0.95);
    }
}

.zero-g-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.floating-element {
    position: absolute;
    opacity: 0.15;
    animation: zeroGFloat 8s ease-in-out infinite;
}

.floating-element:nth-child(odd) {
    animation: zeroGFloatSlow 12s ease-in-out infinite;
}

.floating-element.shape-circle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-gray-300), var(--color-gray-500));
}

.floating-element.shape-square {
    width: 50px;
    height: 50px;
    background: var(--color-gray-400);
    transform-origin: center center;
}

.floating-element.shape-triangle {
    width: 0;
    height: 0;
    border-left: 30px solid transparent;
    border-right: 30px solid transparent;
    border-bottom: 50px solid var(--color-gray-400);
}

.floating-element.shape-line {
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-gray-400), transparent);
}

/* 바운스 인 (Bounce In) - 요소가 바운스하며 등장 */
.animate-bounce-in {
    animation: bounceIn 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.animate-bounce {
    animation: bounce 2s infinite;
}

/* ===========================
   Animation Utility Classes
   =========================== */
.animate-fade-in {
    animation: fadeIn var(--transition-base) ease-out;
}

.animate-fade-in-up {
    animation: fadeInUp var(--transition-base) ease-out;
}

.animate-fade-in-down {
    animation: fadeInDown var(--transition-base) ease-out;
}

.animate-fade-in-left {
    animation: fadeInLeft var(--transition-base) ease-out;
}

.animate-fade-in-right {
    animation: fadeInRight var(--transition-base) ease-out;
}

.animate-scale-in {
    animation: scaleIn var(--transition-base) ease-out;
}

.animate-slide-up {
    animation: slideUp var(--transition-base) ease-out;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-pulse-scale {
    animation: pulseScale 2s ease-in-out infinite;
}

.animate-rotate {
    animation: rotate 2s linear infinite;
}

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

.animate-wobble {
    animation: wobble 1s ease-in-out;
}

/* ===========================
   Animation Delays
   =========================== */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }
.delay-600 { animation-delay: 600ms; }
.delay-700 { animation-delay: 700ms; }
.delay-800 { animation-delay: 800ms; }
.delay-900 { animation-delay: 900ms; }
.delay-1000 { animation-delay: 1000ms; }

/* ===========================
   Animation Durations
   =========================== */
.duration-150 { animation-duration: 150ms; }
.duration-300 { animation-duration: 300ms; }
.duration-500 { animation-duration: 500ms; }
.duration-700 { animation-duration: 700ms; }
.duration-1000 { animation-duration: 1000ms; }
.duration-2000 { animation-duration: 2000ms; }

/* ===========================
   Scroll Reveal Animations
   =========================== */
[data-animate] {
    opacity: 0;
    transition: all 0.6s ease-out;
}

[data-animate="fade-up"] {
    transform: translateY(40px);
}

[data-animate="fade-down"] {
    transform: translateY(-40px);
}

[data-animate="fade-left"] {
    transform: translateX(40px);
}

[data-animate="fade-right"] {
    transform: translateX(-40px);
}

[data-animate="scale"] {
    transform: scale(0.9);
}

[data-animate="rotate"] {
    transform: rotate(-10deg);
}

[data-animate].animated {
    opacity: 1;
    transform: translate(0, 0) scale(1) rotate(0);
}

/* ===========================
   Stagger Animation for Lists
   =========================== */
.stagger-children > * {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.5s ease-out forwards;
}

.stagger-children > *:nth-child(1) { animation-delay: 0.1s; }
.stagger-children > *:nth-child(2) { animation-delay: 0.2s; }
.stagger-children > *:nth-child(3) { animation-delay: 0.3s; }
.stagger-children > *:nth-child(4) { animation-delay: 0.4s; }
.stagger-children > *:nth-child(5) { animation-delay: 0.5s; }
.stagger-children > *:nth-child(6) { animation-delay: 0.6s; }
.stagger-children > *:nth-child(7) { animation-delay: 0.7s; }
.stagger-children > *:nth-child(8) { animation-delay: 0.8s; }

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

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.hover-scale {
    transition: transform var(--transition-base);
}

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

.hover-rotate {
    transition: transform var(--transition-base);
}

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

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

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(26, 26, 46, 0.3);
}

/* ===========================
   Text Animations
   =========================== */
.text-gradient {
    background: linear-gradient(135deg, var(--color-gray-700), var(--color-gray-900));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-shine {
    background: linear-gradient(
        120deg,
        var(--text-primary) 0%,
        var(--text-primary) 40%,
        var(--color-gray-400) 50%,
        var(--text-primary) 60%,
        var(--text-primary) 100%
    );
    background-size: 200% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: textShine 3s linear infinite;
}

@keyframes textShine {
    to {
        background-position: -200% center;
    }
}

/* ===========================
   Loading Animations
   =========================== */
.loading-dots {
    display: inline-flex;
    gap: 4px;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: loadingDot 1.4s ease-in-out infinite both;
}

.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }
.loading-dots span:nth-child(3) { animation-delay: 0s; }

@keyframes loadingDot {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: rotate 1s linear infinite;
}

/* ===========================
   Page Transition
   =========================== */
.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-dark);
    z-index: 9999;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.page-transition.active {
    opacity: 1;
    pointer-events: all;
}

/* ===========================
   Noise/Grain Effect
   =========================== */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 2;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ===========================
   Reduced Motion
   =========================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    [data-animate] {
        opacity: 1 !important;
        transform: none !important;
    }

    .pixel-rain-container,
    .zero-g-container,
    .noise-overlay {
        display: none;
    }
}

/* ===========================
   Playful Animations for UI Elements
   =========================== */
@keyframes wiggle {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-3deg); }
    75% { transform: rotate(3deg); }
}

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

@keyframes pop {
    0% { transform: scale(1); }
    50% { transform: scale(1.15); }
    100% { transform: scale(1); }
}

.animate-pop {
    animation: pop 0.3s ease-out;
}

@keyframes jelly {
    0% { transform: scale(1, 1); }
    25% { transform: scale(0.95, 1.05); }
    50% { transform: scale(1.05, 0.95); }
    75% { transform: scale(0.98, 1.02); }
    100% { transform: scale(1, 1); }
}

.animate-jelly {
    animation: jelly 0.5s ease;
}

/* Button Ripple Effect */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    background-image: radial-gradient(circle, var(--color-white) 10%, transparent 10.01%);
    background-repeat: no-repeat;
    background-position: 50%;
    transform: scale(10, 10);
    opacity: 0;
    transition: transform 0.5s, opacity 0.5s;
}

.ripple:active::after {
    transform: scale(0, 0);
    opacity: 0.3;
    transition: 0s;
}