/*
 * 인천 집수리 교육 - Animations Stylesheet
 * Toss-style smooth animations with cosmic effects
 * Location: /assets/css/animations.css
 */

/* ========================================
   Base Animation 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(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    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);
    }
}

@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);
    }
}

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

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

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

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

/* ========================================
   Toss-style Micro Interactions
   ======================================== */

/* Smooth Hover Lift */
@keyframes hoverLift {
    0% {
        transform: translateY(0);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    }
    100% {
        transform: translateY(-8px);
        box-shadow: 0 16px 50px rgba(0, 0, 0, 0.15);
    }
}

/* Pulse Animation */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

@keyframes pulseSoft {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Ripple Effect */
@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 0.5;
    }
    100% {
        transform: scale(4);
        opacity: 0;
    }
}

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

/* Wiggle Animation */
@keyframes wiggle {
    0%, 100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(-3deg);
    }
    50% {
        transform: rotate(3deg);
    }
    75% {
        transform: rotate(-1deg);
    }
}

/* ========================================
   Cosmic Background Animations
   ======================================== */

/* Floating Orbs */
@keyframes floatOrb {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(30px, -30px) scale(1.05);
    }
    50% {
        transform: translate(0, -50px) scale(1);
    }
    75% {
        transform: translate(-30px, -30px) scale(0.95);
    }
}

@keyframes floatOrbReverse {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(-30px, 30px) scale(0.95);
    }
    50% {
        transform: translate(0, 50px) scale(1);
    }
    75% {
        transform: translate(30px, 30px) scale(1.05);
    }
}

/* Glow Pulse */
@keyframes glowPulse {
    0%, 100% {
        filter: blur(100px);
        opacity: 0.4;
    }
    50% {
        filter: blur(120px);
        opacity: 0.6;
    }
}

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

/* Star Twinkle */
@keyframes twinkle {
    0%, 100% {
        opacity: 0.3;
        transform: scale(0.8);
    }
    50% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Aurora Effect */
@keyframes aurora {
    0% {
        background-position: 0% 0%;
    }
    50% {
        background-position: 100% 100%;
    }
    100% {
        background-position: 0% 0%;
    }
}

/* ========================================
   Loading & Progress Animations
   ======================================== */

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

/* Dot Loader */
@keyframes dotLoader {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Progress Bar */
@keyframes progressBar {
    from {
        width: 0%;
    }
    to {
        width: 100%;
    }
}

/* Skeleton Loading */
@keyframes skeletonPulse {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

/* ========================================
   Text Animations
   ======================================== */

/* Typing Cursor */
@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0;
    }
}

/* Text Reveal */
@keyframes textReveal {
    from {
        clip-path: inset(0 100% 0 0);
    }
    to {
        clip-path: inset(0 0 0 0);
    }
}

/* Letter Spacing Animation */
@keyframes letterSpacing {
    from {
        letter-spacing: 0.5em;
        opacity: 0;
    }
    to {
        letter-spacing: normal;
        opacity: 1;
    }
}

/* Gradient Text Animation */
@keyframes gradientText {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* ========================================
   Scroll Indicator Animation
   ======================================== */

@keyframes scrollBounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(10px);
    }
}

@keyframes scrollDot {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(15px);
    }
}

/* ========================================
   Button Animations
   ======================================== */

/* Button Shine Effect */
@keyframes buttonShine {
    from {
        left: -100%;
    }
    to {
        left: 200%;
    }
}

/* Button Pulse */
@keyframes buttonPulse {
    0%, 100% {
        box-shadow: 0 8px 30px rgba(102, 126, 234, 0.3);
    }
    50% {
        box-shadow: 0 12px 40px rgba(102, 126, 234, 0.5);
    }
}

/* ========================================
   Card Animations
   ======================================== */

/* Card Float */
@keyframes cardFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Card Tilt */
@keyframes cardTilt {
    0%, 100% {
        transform: perspective(1000px) rotateY(0deg);
    }
    50% {
        transform: perspective(1000px) rotateY(5deg);
    }
}

/* ========================================
   Counter Animation
   ======================================== */

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

/* ========================================
   Modal Animations
   ======================================== */

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

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ========================================
   Notification Animations
   ======================================== */

@keyframes notificationSlideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes notificationSlideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* ========================================
   Animation Utility Classes
   ======================================== */

/* Basic Animations */
.animate-fadeIn { animation: fadeIn 0.5s ease-out forwards; }
.animate-fadeOut { animation: fadeOut 0.5s ease-out forwards; }
.animate-fadeInUp { animation: fadeInUp 0.6s ease-out forwards; }
.animate-fadeInDown { animation: fadeInDown 0.6s ease-out forwards; }
.animate-fadeInLeft { animation: fadeInLeft 0.6s ease-out forwards; }
.animate-fadeInRight { animation: fadeInRight 0.6s ease-out forwards; }
.animate-scaleIn { animation: scaleIn 0.5s ease-out forwards; }
.animate-bounceIn { animation: bounceIn 0.6s ease-out forwards; }

/* Infinite Animations */
.animate-pulse { animation: pulse 2s ease-in-out infinite; }
.animate-spin { animation: spin 1s linear infinite; }
.animate-float { animation: floatOrb 6s ease-in-out infinite; }
.animate-glow { animation: glowPulse 4s ease-in-out infinite; }
.animate-wiggle { animation: wiggle 0.5s ease-in-out; }
.animate-shake { animation: shake 0.5s ease-in-out; }

/* Animation Delays */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }
.delay-600 { animation-delay: 0.6s; }
.delay-700 { animation-delay: 0.7s; }
.delay-800 { animation-delay: 0.8s; }
.delay-900 { animation-delay: 0.9s; }
.delay-1000 { animation-delay: 1s; }

/* Animation Durations */
.duration-fast { animation-duration: 0.2s; }
.duration-normal { animation-duration: 0.5s; }
.duration-slow { animation-duration: 0.8s; }
.duration-slower { animation-duration: 1.2s; }

/* Animation Fill Modes */
.fill-forwards { animation-fill-mode: forwards; }
.fill-backwards { animation-fill-mode: backwards; }
.fill-both { animation-fill-mode: both; }

/* ========================================
   Scroll Reveal Classes
   ======================================== */

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Staggered Reveal for Lists */
.reveal-stagger > * {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-stagger.active > *:nth-child(1) { transition-delay: 0.1s; }
.reveal-stagger.active > *:nth-child(2) { transition-delay: 0.2s; }
.reveal-stagger.active > *:nth-child(3) { transition-delay: 0.3s; }
.reveal-stagger.active > *:nth-child(4) { transition-delay: 0.4s; }
.reveal-stagger.active > *:nth-child(5) { transition-delay: 0.5s; }
.reveal-stagger.active > *:nth-child(6) { transition-delay: 0.6s; }

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

/* ========================================
   Hover Effects
   ======================================== */

/* Hover Lift */
.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 50px rgba(0, 0, 0, 0.15);
}

/* Hover Scale */
.hover-scale {
    transition: transform 0.3s ease;
}

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

/* Hover Glow */
.hover-glow {
    transition: box-shadow 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 30px rgba(102, 126, 234, 0.4);
}

/* Hover Shine Effect */
.hover-shine {
    position: relative;
    overflow: hidden;
}

.hover-shine::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    transition: left 0.5s ease;
}

.hover-shine:hover::before {
    left: 100%;
}

/* ========================================
   Loading States
   ======================================== */

/* Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.spinner-lg {
    width: 60px;
    height: 60px;
    border-width: 4px;
}

/* Dot Loader */
.dot-loader {
    display: flex;
    gap: 8px;
}

.dot-loader span {
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
    animation: dotLoader 1.4s ease-in-out infinite;
}

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

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 25%,
        var(--bg-secondary) 50%,
        var(--bg-tertiary) 75%
    );
    background-size: 200px 100%;
    animation: skeletonPulse 1.2s ease-in-out infinite;
}

.skeleton-text {
    height: 16px;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.skeleton-title {
    height: 24px;
    width: 60%;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
}

.skeleton-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

.skeleton-image {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--radius-lg);
}

/* ========================================
   Button Effects
   ======================================== */

/* Ripple Effect on Click */
.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 0.3s ease, height 0.3s ease, opacity 0.5s ease;
}

.btn-ripple:active::after {
    width: 200px;
    height: 200px;
    opacity: 0;
}

/* Gradient Animation Button */
.btn-gradient-animated {
    background: linear-gradient(
        135deg,
        var(--primary),
        var(--secondary),
        var(--accent),
        var(--primary)
    );
    background-size: 300% 300%;
    animation: gradientShift 3s ease infinite;
}

/* ========================================
   Toss-style Number Counter
   ======================================== */

.counter-number {
    display: inline-block;
    overflow: hidden;
}

.counter-number span {
    display: inline-block;
    animation: countUp 0.6s ease-out forwards;
}

/* ========================================
   Page Transition
   ======================================== */

.page-transition {
    opacity: 0;
    animation: fadeIn 0.4s ease-out forwards;
}

.page-transition-out {
    animation: fadeOut 0.3s ease-out forwards;
}

/* ========================================
   Cosmic Background Effects
   ======================================== */

.cosmic-bg {
    position: relative;
    overflow: hidden;
}

.cosmic-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(
        circle,
        rgba(102, 126, 234, 0.1) 0%,
        transparent 40%
    );
    animation: floatOrb 20s ease-in-out infinite;
    pointer-events: none;
}

.cosmic-stars {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.cosmic-star {
    position: absolute;
    width: 2px;
    height: 2px;
    background: white;
    border-radius: 50%;
    animation: twinkle 2s ease-in-out infinite;
}

/* ========================================
   Reduced Motion Override
   ======================================== */

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

    .reveal,
    .reveal-left,
    .reveal-right,
    .reveal-scale {
        opacity: 1;
        transform: none;
    }

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

    .hover-lift:hover,
    .hover-scale:hover {
        transform: none;
    }
}