/* CSS Variables */
:root {
    --primary: #1B263B;
    --primary-dark: #0D1321;
    --primary-light: #2E3A52;
    --accent: #D4AF37;
    --accent-dark: #B8962D;
    --accent-light: #E8C45A;
    --light: #E8DAB2;
    --light-fade: rgba(232, 218, 178, 0.1);
    --white: #FFFFFF;
    --text-primary: #E8DAB2;
    --text-secondary: rgba(232, 218, 178, 0.7);
    --content-width: 768px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Serif KR', serif;
    font-weight: 400;
    line-height: 1.8;
    color: var(--text-primary);
    background-color: var(--primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/background.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    z-index: -2;
}

.bg-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        180deg,
        rgba(27, 38, 59, 0.92) 0%,
        rgba(13, 19, 33, 0.95) 50%,
        rgba(27, 38, 59, 0.92) 100%
    );
    z-index: -1;
}

/* Animated light effects overlay */
.bg-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(212, 175, 55, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(212, 175, 55, 0.05) 0%, transparent 50%);
    animation: gradientShift 15s ease-in-out infinite;
}

/* Moving light beam effect */
.bg-overlay::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        conic-gradient(
            from 0deg at 50% 50%,
            transparent 0deg,
            rgba(212, 175, 55, 0.03) 60deg,
            transparent 120deg,
            rgba(212, 175, 55, 0.02) 180deg,
            transparent 240deg,
            rgba(212, 175, 55, 0.03) 300deg,
            transparent 360deg
        );
    animation: rotateLight 60s linear infinite;
}

@keyframes gradientShift {
    0%, 100% {
        opacity: 0.6;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.1);
    }
}

@keyframes rotateLight {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Floating orbs for ambient light effect */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    background:
        radial-gradient(circle at 10% 20%, rgba(212, 175, 55, 0.06) 0%, transparent 25%),
        radial-gradient(circle at 90% 30%, rgba(232, 218, 178, 0.04) 0%, transparent 20%),
        radial-gradient(circle at 30% 80%, rgba(212, 175, 55, 0.05) 0%, transparent 25%),
        radial-gradient(circle at 70% 90%, rgba(232, 218, 178, 0.03) 0%, transparent 20%);
    animation: floatingOrbs 25s ease-in-out infinite alternate;
}

@keyframes floatingOrbs {
    0% {
        background-position: 0% 0%, 100% 0%, 0% 100%, 100% 100%;
    }
    100% {
        background-position: 20% 30%, 80% 20%, 20% 70%, 80% 80%;
    }
}

/* Main Container */
.main-container {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 60px 24px 120px;
    position: relative;
}

/* Section Common Styles */
section {
    margin-bottom: 80px;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header i {
    font-size: 2rem;
    color: var(--accent);
    margin-bottom: 16px;
    display: block;
}

.section-header h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--light);
    letter-spacing: 0.02em;
}

/* Hero Section */
.hero-section {
    text-align: center;
    padding: 60px 0 40px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--primary-dark);
    padding: 10px 24px;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 32px;
    box-shadow: 0 4px 20px rgba(212, 175, 55, 0.3);
}

.hero-badge i {
    font-size: 1rem;
}

.hero-title {
    margin-bottom: 24px;
}

.title-line {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--light);
}

.title-line.gold {
    color: var(--accent);
    text-shadow: 0 0 40px rgba(212, 175, 55, 0.4);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 32px;
    line-height: 2;
}

.hero-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.divider-line {
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.hero-divider i {
    color: var(--accent);
    font-size: 0.75rem;
}

/* Introduction Section */
.intro-section {
    background: var(--light-fade);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid rgba(212, 175, 55, 0.1);
}

.intro-content p {
    text-align: center;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.intro-content p:last-child {
    margin-bottom: 0;
}

.highlight-text {
    color: var(--light) !important;
    font-weight: 500;
    padding: 20px;
    background: rgba(212, 175, 55, 0.05);
    border-left: 3px solid var(--accent);
    border-radius: 0 8px 8px 0;
    text-align: left !important;
}

/* Features Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.feature-card {
    background: rgba(46, 58, 82, 0.5);
    border: 1px solid rgba(212, 175, 55, 0.15);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    font-size: 1.75rem;
    color: var(--primary-dark);
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--light);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Features Grid with Images */
.features-grid-images {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.feature-card-img {
    display: flex;
    gap: 24px;
    background: rgba(46, 58, 82, 0.4);
    border: 1px solid rgba(212, 175, 55, 0.15);
    border-radius: 16px;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.feature-card-img:nth-child(even) {
    flex-direction: row-reverse;
}

.feature-card-img:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.feature-image-wrapper {
    flex: 0 0 45%;
    max-width: 45%;
    overflow: hidden;
}

.feature-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
    min-height: 200px;
}

.feature-card-img:hover .feature-image {
    transform: scale(1.05);
}

.feature-content {
    flex: 1;
    padding: 32px 28px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.feature-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--light);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.feature-content h3 i {
    color: var(--accent);
    font-size: 1.125rem;
}

.feature-content p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

@media (max-width: 768px) {
    .feature-card-img,
    .feature-card-img:nth-child(even) {
        flex-direction: column;
    }
    
    .feature-image-wrapper {
        flex: none;
        max-width: 100%;
        height: 200px;
    }
    
    .feature-image {
        min-height: auto;
        height: 200px;
    }
    
    .feature-content {
        padding: 24px 20px;
    }
    
    .feature-content h3 {
        font-size: 1.125rem;
    }
    
    .feature-content p {
        font-size: 0.9375rem;
    }
}

/* Philosophy Section */
.philosophy-card {
    background: linear-gradient(135deg, rgba(46, 58, 82, 0.6), rgba(27, 38, 59, 0.8));
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 20px;
    padding: 48px 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.philosophy-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.03) 0%, transparent 60%);
    animation: shimmer 10s linear infinite;
}

@keyframes shimmer {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.quote-mark {
    margin-bottom: 24px;
    position: relative;
}

.quote-mark i {
    font-size: 3rem;
    color: var(--accent);
    opacity: 0.5;
}

blockquote {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--light);
    line-height: 2;
    margin-bottom: 24px;
    position: relative;
}

.philosophy-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: var(--accent);
    font-weight: 500;
    font-size: 0.9375rem;
}

.gold-line {
    width: 40px;
    height: 2px;
    background: var(--accent);
}

/* Learning Path Section */
.path-timeline {
    position: relative;
    padding-left: 0;
}

.path-item {
    display: flex;
    gap: 20px;
    margin-bottom: 24px;
    padding: 24px;
    background: rgba(46, 58, 82, 0.3);
    border-radius: 12px;
    border: 1px solid rgba(212, 175, 55, 0.1);
    transition: all var(--transition-normal);
}

.path-item:hover {
    background: rgba(46, 58, 82, 0.5);
    border-color: rgba(212, 175, 55, 0.3);
}

.path-item:last-child {
    margin-bottom: 0;
}

.path-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    min-width: 50px;
    line-height: 1;
}

.path-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--light);
    margin-bottom: 8px;
}

.path-content p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

/* Audience Section */
.audience-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.audience-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: rgba(46, 58, 82, 0.3);
    border-radius: 12px;
    border: 1px solid rgba(212, 175, 55, 0.1);
    transition: all var(--transition-normal);
}

.audience-item:hover {
    background: rgba(46, 58, 82, 0.5);
    border-color: var(--accent);
    transform: translateX(8px);
}

.audience-item i {
    font-size: 1.25rem;
    color: var(--accent);
}

.audience-item span {
    font-size: 1rem;
    color: var(--light);
}

/* CTA Section */
.cta-section {
    text-align: center;
}

.cta-card {
    padding: 48px 32px;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.08), rgba(212, 175, 55, 0.02));
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 20px;
}

.cta-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--light);
    margin-bottom: 12px;
}

.cta-card p {
    color: var(--text-secondary);
    margin-bottom: 28px;
}

/* CTA Buttons */
.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--primary-dark);
    font-family: 'Noto Serif KR', serif;
    font-size: 1rem;
    font-weight: 600;
    padding: 16px 32px;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 20px rgba(212, 175, 55, 0.3);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(212, 175, 55, 0.4);
}

.cta-button.large {
    font-size: 1.125rem;
    padding: 20px 40px;
}

/* Button icon style */
.btn-icon {
    width: 24px;
    height: 24px;
    object-fit: contain;
    flex-shrink: 0;
}

.cta-button.large .btn-icon {
    width: 28px;
    height: 28px;
}

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

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(212, 175, 55, 0.3);
    }
    50% {
        box-shadow: 0 4px 30px rgba(212, 175, 55, 0.5);
    }
}

/* FAQ Section */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: rgba(46, 58, 82, 0.3);
    border: 1px solid rgba(212, 175, 55, 0.1);
    border-radius: 12px;
    overflow: hidden;
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.faq-question:hover {
    background: rgba(46, 58, 82, 0.5);
}

.faq-question span {
    font-size: 1rem;
    font-weight: 500;
    color: var(--light);
}

.faq-question i {
    color: var(--accent);
    transition: transform var(--transition-normal);
}

.faq-question.active i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-answer p {
    padding: 0 24px 20px;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

/* Final CTA Section */
.final-cta-section {
    margin-bottom: 40px;
}

.final-cta-content {
    text-align: center;
    padding: 60px 40px;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(212, 175, 55, 0.05));
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 20px;
}

.final-cta-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--light);
    margin-bottom: 16px;
}

.final-cta-content p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* Footer */
.site-footer {
    background: rgba(13, 19, 33, 0.8);
    border-top: 1px solid rgba(212, 175, 55, 0.1);
    padding: 40px 24px 120px;
}

.footer-content {
    max-width: var(--content-width);
    margin: 0 auto;
    text-align: center;
}

.footer-links {
    margin-bottom: 20px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent);
}

.footer-links a i {
    margin-right: 6px;
}

.footer-divider {
    margin: 0 16px;
    color: rgba(232, 218, 178, 0.3);
}

.footer-copyright {
    font-size: 0.8125rem;
    color: rgba(232, 218, 178, 0.5);
}

/* Fixed Bottom CTA */
.fixed-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px 24px;
   
    z-index: 1000;
    display: flex;
    justify-content: center;
}

.fixed-cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--primary-dark);
    font-family: 'Noto Serif KR', serif;
    font-size: 1rem;
    font-weight: 600;
    padding: 14px 40px;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 20px rgba(212, 175, 55, 0.4);
}

.fixed-cta-button .btn-icon {
    width: 22px;
    height: 22px;
}

.fixed-cta-button:hover {
    transform: scale(1.02);
    box-shadow: 0 6px 25px rgba(212, 175, 55, 0.5);
}

/* Urgent pulse animation for fixed button */
.fixed-cta-button.urgent-pulse {
    animation: urgentPulse 1.2s ease-in-out infinite;
}

@keyframes urgentPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 4px 20px rgba(212, 175, 55, 0.4);
    }
    25% {
        transform: scale(1.06);
        box-shadow: 0 6px 30px rgba(212, 175, 55, 0.6);
    }
    50% {
        transform: scale(1);
        box-shadow: 0 4px 20px rgba(212, 175, 55, 0.4);
    }
    75% {
        transform: scale(1.04);
        box-shadow: 0 5px 25px rgba(212, 175, 55, 0.5);
    }
}

.fixed-cta-button.urgent-pulse:hover {
    animation: none;
    transform: scale(1.08);
    box-shadow: 0 8px 35px rgba(212, 175, 55, 0.7);
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(13, 19, 33, 0.95);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--primary);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 20px;
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    transition: color var(--transition-fast);
    padding: 8px;
}

.modal-close:hover {
    color: var(--accent);
}

.modal-content h3 {
    padding: 32px 32px 24px;
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--accent);
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
}

.modal-content h3 i {
    margin-right: 12px;
}

.modal-body {
    padding: 24px 32px 32px;
}

.modal-body h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--light);
    margin: 20px 0 12px;
}

.modal-body h4:first-child {
    margin-top: 0;
}

.modal-body p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--primary-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-dark);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .main-container {
        padding: 40px 20px 100px;
    }
    
    section {
        margin-bottom: 60px;
    }
    
    .title-line {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .intro-section {
        padding: 28px 20px;
    }
    
    .highlight-text {
        padding: 16px;
    }
    
    .philosophy-card {
        padding: 32px 24px;
    }
    
    blockquote {
        font-size: 1.1rem;
    }
    
    .feature-card {
        padding: 24px 20px;
    }
    
    .path-item {
        flex-direction: column;
        gap: 12px;
    }
    
    .final-cta-content {
        padding: 40px 24px;
    }
    
    .final-cta-content h2 {
        font-size: 1.25rem;
    }
    
    .cta-button.large {
        font-size: 1rem;
        padding: 16px 32px;
    }
    
    .footer-links a {
        display: block;
        margin-bottom: 12px;
    }
    
    .footer-divider {
        display: none;
    }
    
    .modal-content h3 {
        padding: 24px 24px 20px;
        font-size: 1.25rem;
    }
    
    .modal-body {
        padding: 20px 24px 24px;
    }
    
    .fixed-cta {
        padding: 12px 16px;
    }
    
    .fixed-cta-button {
        width: 100%;
        max-width: 360px;
        padding: 14px 24px;
    }
}

/* Very small screens */
@media (max-width: 400px) {
    .hero-badge {
        font-size: 0.8125rem;
        padding: 8px 18px;
    }
    
    .title-line {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
    }
    
    .feature-icon i {
        font-size: 1.5rem;
    }
}