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

:root {
    /* Color System */
    --color-navy: #1a2332;
    --color-navy-light: #2a3444;
    --color-navy-dark: #0f1621;
    --color-gold: #D4AF37;
    --color-gold-light: #FFD700;
    --color-gold-dark: #B8941F;
    --color-white: #ffffff;
    --color-gray-light: #f8f9fa;
    --color-gray: #e9ecef;
    --color-gray-dark: #6c757d;
    --color-text: #333333;
    
    /* Typography */
    --font-primary: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Animation */
    --transition-base: all 0.3s ease;
    --transition-slow: all 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    line-height: 1.7;
    overflow-x: hidden;
    background-color: var(--color-white);
}

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

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-navy);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--spacing-sm);
    font-weight: 800;
}

.section-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-lg);
}

@media (max-width: 768px) {
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
}

/* ===================================
   Hero Section
   =================================== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-navy-dark) 0%, var(--color-navy) 50%, var(--color-navy-light) 100%);
    overflow: hidden;
    padding: var(--spacing-lg) var(--spacing-md);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.3;
    z-index: 1;
}

.blueprint-graphic {
    width: 100%;
    height: 100%;
    animation: blueprintPulse 10s ease-in-out infinite;
}

@keyframes blueprintPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.5; }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    animation: fadeInUp 1s ease-out;
}

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

.hero-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(212, 175, 55, 0.15);
    border: 1px solid var(--color-gold);
    border-radius: 50px;
    color: var(--color-gold);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-md);
    animation: fadeIn 1s ease-out 0.3s both;
}

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

.hero-title {
    font-size: clamp(2rem, 6vw, 3.5rem);
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
    animation: fadeInUp 1s ease-out 0.5s both;
}

.hero-title .highlight {
    color: var(--color-gold);
    position: relative;
    display: inline-block;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    animation: fadeInUp 1s ease-out 0.7s both;
}

.cta-button {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-gold), var(--color-gold-light));
    color: var(--color-navy);
    font-size: 1.25rem;
    font-weight: 700;
    text-decoration: none;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.3);
    transition: var(--transition-base);
    animation: fadeInUp 1s ease-out 0.9s both;
    min-width: 300px;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(212, 175, 55, 0.4);
    background: linear-gradient(135deg, var(--color-gold-light), var(--color-gold));
}

.cta-button .cta-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
}

.cta-button .cta-subtext {
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0.8;
    margin-top: var(--spacing-xs);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-gold);
    font-size: 0.85rem;
    animation: bounce 2s infinite;
    z-index: 2;
}

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

@media (max-width: 768px) {
    .hero-section {
        padding: var(--spacing-md) var(--spacing-sm);
        min-height: 90vh;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .cta-button {
        padding: var(--spacing-md) var(--spacing-md);
        font-size: 1.1rem;
        min-width: 280px;
    }
}

/* ===================================
   Section Common Styles
   =================================== */
section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

@media (max-width: 768px) {
    section {
        padding: var(--spacing-lg) 0;
    }
}

/* ===================================
   History Section
   =================================== */
.history-section {
    background: var(--color-gray-light);
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding: var(--spacing-md) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-gold), var(--color-gold-light));
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-slow);
}

.timeline-item.aos-animate {
    opacity: 1;
    transform: translateY(0);
}

.timeline-marker {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.timeline-dot {
    width: 20px;
    height: 20px;
    background: var(--color-gold);
    border: 4px solid var(--color-white);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.2);
}

.timeline-item.current .timeline-dot {
    width: 30px;
    height: 30px;
    background: var(--color-gold-light);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.2); }
    50% { box-shadow: 0 0 0 8px rgba(212, 175, 55, 0.4); }
}

.timeline-content {
    width: calc(50% - 40px);
    padding: var(--spacing-md);
    background: var(--color-white);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition-base);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-right: auto;
    margin-left: 0;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-left: auto;
    margin-right: 0;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.timeline-date {
    color: var(--color-gold);
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
    letter-spacing: 1px;
}

.timeline-title {
    font-size: 1.5rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
}

.timeline-description {
    color: var(--color-gray-dark);
    line-height: 1.7;
}

@media (max-width: 768px) {
    .timeline::before {
        left: 20px;
    }
    
    .timeline-marker {
        left: 20px;
        transform: none;
    }
    
    .timeline-content {
        width: calc(100% - 60px);
        margin-left: 60px !important;
        margin-right: 0 !important;
    }
    
    .timeline-title {
        font-size: 1.25rem;
    }
}

/* ===================================
   Overview Section
   =================================== */
.overview-section {
    background: var(--color-white);
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.overview-card {
    background: var(--color-white);
    border: 2px solid var(--color-gray);
    border-radius: 16px;
    padding: var(--spacing-lg);
    text-align: center;
    transition: var(--transition-base);
    opacity: 0;
    transform: translateY(30px);
}

.overview-card.aos-animate {
    opacity: 1;
    transform: translateY(0);
}

.overview-card:hover {
    border-color: var(--color-gold);
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(212, 175, 55, 0.15);
}

.card-icon {
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: 1.5rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
}

.card-description {
    color: var(--color-gray-dark);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.card-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(212, 175, 55, 0.1);
    color: var(--color-gold-dark);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 50px;
}

.overview-highlight {
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
    padding: var(--spacing-lg);
    border-radius: 16px;
    text-align: center;
    color: var(--color-white);
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-slow);
}

.overview-highlight.aos-animate {
    opacity: 1;
    transform: translateY(0);
}

.highlight-icon {
    margin-bottom: var(--spacing-md);
}

.overview-highlight h3 {
    color: var(--color-gold);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

.overview-highlight p {
    font-size: 1.1rem;
    line-height: 1.8;
    opacity: 0.9;
}

@media (max-width: 768px) {
    .overview-grid {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Why Now Section
   =================================== */
.why-now-section {
    background: linear-gradient(135deg, var(--color-navy-dark) 0%, var(--color-navy) 100%);
    color: var(--color-white);
}

.why-now-section .section-title,
.why-now-section .section-subtitle {
    color: var(--color-white);
}

.why-now-section .section-subtitle {
    opacity: 0.8;
}

.why-content {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-slow);
}

.why-content.aos-animate {
    opacity: 1;
    transform: translateY(0);
}

.why-main {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.why-icon {
    margin-bottom: var(--spacing-md);
}

.why-title {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.why-description {
    font-size: 1.15rem;
    line-height: 1.9;
    opacity: 0.9;
    max-width: 800px;
    margin: 0 auto;
}

.why-description strong {
    color: var(--color-gold);
    font-weight: 700;
}

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

.benefit-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 12px;
    padding: var(--spacing-md);
    transition: var(--transition-base);
}

.benefit-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-gold);
    transform: translateY(-5px);
}

.benefit-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-gold);
    margin-bottom: var(--spacing-sm);
    opacity: 0.6;
}

.benefit-item h4 {
    color: var(--color-white);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.benefit-item p {
    opacity: 0.8;
    line-height: 1.7;
}

.cta-section {
    text-align: center;
    margin-top: var(--spacing-xl);
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-slow);
}

.cta-section.aos-animate {
    opacity: 1;
    transform: translateY(0);
}

.cta-button.secondary {
    background: var(--color-white);
    color: var(--color-navy);
    flex-direction: row;
    gap: var(--spacing-sm);
    align-items: center;
}

.cta-button.secondary:hover {
    background: var(--color-gold);
    color: var(--color-navy);
}

.cta-arrow {
    font-size: 1.5rem;
    transition: var(--transition-base);
}

.cta-button.secondary:hover .cta-arrow {
    transform: translateX(5px);
}

.cta-note {
    margin-top: var(--spacing-md);
    font-size: 0.9rem;
    opacity: 0.7;
}

@media (max-width: 768px) {
    .why-benefits {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   FAQ Section
   =================================== */
.faq-section {
    background: var(--color-gray-light);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--color-white);
    border-radius: 12px;
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition-slow);
}

.faq-item.aos-animate {
    opacity: 1;
    transform: translateY(0);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-navy);
    transition: var(--transition-base);
}

.faq-question:hover {
    background: var(--color-gray-light);
}

.faq-q {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gold);
    color: var(--color-white);
    border-radius: 50%;
    font-weight: 700;
    font-size: 1rem;
}

.faq-text {
    flex: 1;
    line-height: 1.6;
}

.faq-icon {
    flex-shrink: 0;
    color: var(--color-gray-dark);
    transition: var(--transition-base);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--color-gold);
}

.faq-answer {
    display: flex;
    gap: var(--spacing-sm);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.3s ease, opacity 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    opacity: 1;
    padding: 0 var(--spacing-md) var(--spacing-md) var(--spacing-md);
}

.faq-a {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-navy);
    color: var(--color-white);
    border-radius: 50%;
    font-weight: 700;
    font-size: 1rem;
}

.faq-answer p {
    flex: 1;
    color: var(--color-gray-dark);
    line-height: 1.8;
    font-size: 1rem;
}

@media (max-width: 768px) {
    .faq-question {
        font-size: 1rem;
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .faq-item.active .faq-answer {
        padding: 0 var(--spacing-sm) var(--spacing-sm) var(--spacing-sm);
    }
}

/* ===================================
   Community Section
   =================================== */
.community-section {
    background: var(--color-white);
}

.community-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto;
}

.community-card {
    background: var(--color-white);
    border: 2px solid var(--color-gray);
    border-radius: 16px;
    padding: var(--spacing-lg);
    text-align: center;
    transition: var(--transition-base);
    opacity: 0;
    transform: translateY(30px);
}

.community-card.aos-animate {
    opacity: 1;
    transform: translateY(0);
}

.community-card:hover {
    border-color: var(--color-gold);
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(212, 175, 55, 0.15);
}

.community-icon {
    margin-bottom: var(--spacing-md);
}

.community-card h3 {
    font-size: 1.5rem;
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
}

.community-card p {
    color: var(--color-gray-dark);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.community-link {
    display: inline-block;
    color: var(--color-gold);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-base);
}

.community-link:hover {
    color: var(--color-gold-dark);
    transform: translateX(5px);
}

@media (max-width: 768px) {
    .community-grid {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--color-navy-dark);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-title {
    font-size: 1.5rem;
    color: var(--color-gold);
    margin-bottom: var(--spacing-md);
}

.footer-description {
    line-height: 1.8;
    opacity: 0.8;
}

.footer-contact h4 {
    color: var(--color-gold);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
}

.footer-contact p {
    line-height: 1.9;
    opacity: 0.8;
}

.footer-contact strong {
    color: var(--color-white);
    font-weight: 600;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
}

.copyright {
    margin-bottom: var(--spacing-sm);
    opacity: 0.6;
    font-size: 0.9rem;
}

.footer-note {
    opacity: 0.5;
    font-size: 0.85rem;
    line-height: 1.7;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

/* ===================================
   Floating CTA Button
   =================================== */
.floating-cta {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-gold), var(--color-gold-light));
    color: var(--color-navy);
    text-decoration: none;
    border-radius: 50px;
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.4);
    font-weight: 700;
    z-index: 1000;
    transition: var(--transition-base);
    animation: floatPulse 3s ease-in-out infinite;
}

@keyframes floatPulse {
    0%, 100% {
        transform: translateY(0);
        box-shadow: 0 10px 30px rgba(212, 175, 55, 0.4);
    }
    50% {
        transform: translateY(-5px);
        box-shadow: 0 15px 40px rgba(212, 175, 55, 0.5);
    }
}

.floating-cta:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 50px rgba(212, 175, 55, 0.6);
}

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

.floating-text {
    font-size: 0.95rem;
    line-height: 1.3;
}

@media (max-width: 768px) {
    .floating-cta {
        bottom: 20px;
        right: 20px;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .floating-text {
        font-size: 0.85rem;
    }
}

/* ===================================
   Scroll Animations
   =================================== */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   Utility Classes
   =================================== */
.text-center {
    text-align: center;
}

.text-gold {
    color: var(--color-gold);
}

.bg-navy {
    background-color: var(--color-navy);
}

.bg-gold {
    background-color: var(--color-gold);
}

/* ===================================
   Print Styles
   =================================== */
@media print {
    .floating-cta,
    .scroll-indicator {
        display: none;
    }
}