/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --primary-color: #c9302c;
    --secondary-color: #f4e4e4;
    --accent-color: #d4af37;
    --text-dark: #2c3e50;
    --text-light: #667788;
    --background-light: #fafafa;
    --white: #ffffff;
    --black: #000000;
    
    /* Typography */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Montserrat', sans-serif;
    --font-korean: 'Noto Sans KR', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

body.korean {
    font-family: var(--font-korean), var(--font-body);
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition-slow);
}

.loading-content {
    text-align: center;
}

.loading-hearts {
    display: flex;
    gap: 0.5rem;
    font-size: 2rem;
    margin-bottom: 1rem;
    animation: pulse 1.5s ease-in-out infinite;
}

.loading-hearts span:nth-child(2) {
    animation-delay: 0.2s;
}

.loading-hearts span:nth-child(3) {
    animation-delay: 0.4s;
}

.loading-text {
    font-size: 1.2rem;
    color: var(--text-light);
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.8;
    }
    50% {
        transform: scale(1.2);
        opacity: 1;
    }
}

/* Language Selector */
.language-selector {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    gap: 10px;
}

.lang-btn {
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--primary-color);
    border-radius: 25px;
    color: var(--primary-color);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
}

.lang-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.lang-btn.active {
    background: var(--primary-color);
    color: var(--white);
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xxl) 0;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--text-dark);
    font-weight: 400;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('./images/main.jpg') center/cover no-repeat;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
}

.hero-content {
    position: relative;
    text-align: center;
    color: var(--white);
    padding: var(--spacing-md);
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    font-weight: 300;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.hero-date {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    opacity: 0.85;
}

.hero-date p {
    margin: var(--spacing-xs) 0;
}

.scroll-indicator {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: block;
    width: 30px;
    height: 50px;
    border: 2px solid var(--white);
    border-radius: 25px;
    opacity: 0.7;
    transition: opacity var(--transition-normal);
}

.scroll-indicator:hover {
    opacity: 1;
}

.scroll-arrow {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    border-right: 2px solid var(--white);
    border-bottom: 2px solid var(--white);
    transform: translateX(-50%) rotate(45deg);
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0) rotate(45deg);
    }
    40% {
        transform: translateX(-50%) translateY(10px) rotate(45deg);
    }
    60% {
        transform: translateX(-50%) translateY(5px) rotate(45deg);
    }
}

/* Invitation Section */
.invitation-section {
    background: var(--secondary-color);
    text-align: center;
}

.invitation-text {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

.invitation-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.detail-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition-normal);
}

.detail-card:hover {
    transform: translateY(-5px);
}

.detail-card .icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.detail-card h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    color: var(--primary-color);
}

.detail-card p {
    color: var(--text-light);
}

/* Story Section */
.story-section {
    background: var(--white);
}

.story-content-centered {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.story-content-centered p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-light);
}

/* Gallery Section */
.gallery-section {
    background: var(--white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform var(--transition-normal);
    aspect-ratio: 16 / 9;
    background: var(--secondary-color);
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow);
}

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

/* Videos Section */
.videos-section {
    background: var(--secondary-color);
}

.video-item {
    margin-bottom: var(--spacing-xl);
}

.video-item h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
    color: var(--primary-color);
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    max-width: 960px;
    margin: 0 auto var(--spacing-md);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-note {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-light);
    font-style: italic;
    max-width: 800px;
    margin: 0 auto;
}

/* Join Section */
.join-section {
    background: var(--background-light);
}

.join-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: 15px;
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.join-card h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
}

.video-container {
    margin-top: var(--spacing-md);
}

.video-placeholder {
    background: var(--secondary-color);
    padding: var(--spacing-xl);
    border-radius: 10px;
    text-align: center;
    color: var(--text-light);
}

.venue-info {
    margin-bottom: var(--spacing-md);
}

.venue-info h4 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
}

.venue-info p {
    color: var(--text-light);
    margin-bottom: var(--spacing-xs);
}

.venue-link {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    margin-top: var(--spacing-sm);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.venue-link:hover {
    color: var(--accent-color);
}

.map-container {
    margin-top: var(--spacing-md);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.map-container iframe {
    width: 100%;
    height: 400px;
    border: none;
}

/* Messages Section */
.messages-section {
    background: var(--white);
    text-align: center;
}

.messages-intro {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
}

.contact-options {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.contact-card {
    background: var(--secondary-color);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--text-dark);
    transition: all var(--transition-normal);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.contact-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    background: var(--primary-color);
    color: var(--white);
}

.contact-icon {
    font-size: 1.5rem;
}

.email-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.email-links a {
    color: inherit;
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.email-links a:hover {
    opacity: 0.8;
}

.separator {
    opacity: 0.5;
}

/* Thank You Section */
.thank-you-section {
    background: var(--white);
    text-align: center;
}

.thank-you-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin: var(--spacing-xl) 0;
    flex-wrap: wrap;
}

.timeline-item {
    text-align: center;
}

.timeline-item .year {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.timeline-item p {
    font-size: 1rem;
    color: var(--text-light);
}

.timeline-divider {
    font-size: 2rem;
    color: var(--accent-color);
    animation: pulse 2s ease-in-out infinite;
}

.thank-you-message {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-light);
    max-width: 600px;
    margin: var(--spacing-lg) auto;
}

.heart-decoration {
    font-size: 3rem;
    margin-top: var(--spacing-md);
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: var(--white);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.footer-text {
    opacity: 0.8;
}

.footer-link {
    color: inherit;
    text-decoration: none;
    cursor: default;
}

.footer-link:hover {
    color: inherit;
    text-decoration: none;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .language-selector {
        top: 10px;
        right: 10px;
    }
    
    .lang-btn {
        padding: 6px 12px;
        font-size: 0.75rem;
    }
    
    .hero-content {
        padding: var(--spacing-sm);
    }
    
    
    .invitation-details {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .contact-options {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-card {
        width: 100%;
        max-width: 300px;
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    .timeline-divider {
        display: none;
    }
    
    .thank-you-content {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .detail-card {
        padding: var(--spacing-md);
    }
    
    .join-card {
        padding: var(--spacing-md);
    }
}