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

:root {
    /* Future Silver Foil Color Palette */
    --primary-dark: #1A1F2E;
    --primary-silver: #A7B0C7;
    --primary-light: #E5E8F0;
    --accent-blue: #4A90E2;
    --accent-gold: #D4AF37;
    --success-green: #27AE60;
    --danger-red: #E74C3C;
    --warning-orange: #F39C12;
    
    /* Typography */
    --font-primary: 'Noto Serif KR', serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(26, 31, 46, 0.1);
    --shadow-md: 0 4px 16px rgba(26, 31, 46, 0.15);
    --shadow-lg: 0 8px 32px rgba(26, 31, 46, 0.2);
    --shadow-xl: 0 16px 64px rgba(26, 31, 46, 0.25);
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-regular);
    line-height: 1.6;
    color: var(--primary-dark);
    background-color: var(--primary-light);
    overflow-x: hidden;
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(229, 232, 240, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(167, 176, 199, 0.2);
    z-index: 1000;
    transition: all 0.3s ease;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-dark);
}

.logo i {
    color: var(--accent-blue);
    font-size: 1.5rem;
}

.nav {
    display: flex;
    gap: var(--spacing-lg);
}

.nav a {
    text-decoration: none;
    color: var(--primary-dark);
    font-weight: var(--font-weight-medium);
    transition: color 0.3s ease;
    position: relative;
}

.nav a:hover {
    color: var(--accent-blue);
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-blue);
    transition: width 0.3s ease;
}

.nav a:hover::after {
    width: 100%;
}

/* Stock Ticker */
.stock-ticker {
    position: fixed;
    left: 0;
    right: 0;
    background: var(--primary-dark);
    color: var(--primary-light);
    padding: var(--spacing-xs) 0;
    z-index: 999;
    overflow: hidden;
}

.ticker-content {
    display: flex;
    animation: ticker 60s linear infinite;
    white-space: nowrap;
}

.ticker-item {
    margin-right: var(--spacing-xl);
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
}

.price.up {
    color: var(--success-green);
}

.price.down {
    color: var(--danger-red);
}

@keyframes ticker {
    0% { transform: translateX(100%); }
    100% { transform: translateX(-100%); }
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 120px;
    background: url(../images/bgc.png) no-repeat center center;
    background-size: cover;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid" width="50" height="50" patternUnits="userSpaceOnUse"><path d="M 50 0 L 0 0 0 50" fill="none" stroke="%23A7B0C7" stroke-width="0.5" opacity="0.3"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>') center/cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(26, 31, 46, 0.05) 0%, rgba(167, 176, 199, 0.1) 100%);
}

.hero-content {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-xxl);
    align-items: center;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(74, 144, 226, 0.1);
    color: var(--accent-blue);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-md);
    border: 1px solid rgba(74, 144, 226, 0.2);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.highlight {
    color: var(--accent-blue);
    position: relative;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--primary-dark);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
    font-weight: var(--font-weight-medium);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--accent-blue);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--primary-dark);
    margin-top: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.cta-button.primary {
    background: linear-gradient(135deg, var(--accent-blue), #357ABD);
    color: white;
    box-shadow: var(--shadow-md);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-button.secondary {
    background: transparent;
    color: var(--primary-dark);
    border: 2px solid var(--primary-silver);
}

.cta-button.secondary:hover {
    background: var(--primary-silver);
    color: white;
}

.cta-button.large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

/* Kakao Icon Styles */
.kakao-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.cta-button.large .kakao-icon {
    width: 32px;
    height: 32px;
}

.fixed-cta-button .kakao-icon {
    width: 32px;
    height: 32px;
}

/* Profile Card */
.profile-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.profile-image {
    position: relative;
    width: 250px;
    height: 250px;
    margin: 0 auto var(--spacing-md);
}

.profile-image img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--accent-blue);
}

.profile-badge {
    position: absolute;
    bottom: 10px;
    right: 10px;
    width: 40px;
    height: 40px;
    background: var(--accent-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    border: 3px solid white;
}

.profile-info h3 {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-dark);
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 2px 4px rgba(26, 31, 46, 0.1);
}

.profile-info p {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
    font-weight: var(--font-weight-medium);
    font-size: 1.1rem;
}

.profile-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    justify-content: center;
}

.tag {
    background: rgba(74, 144, 226, 0.1);
    color: var(--accent-blue);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: var(--font-weight-medium);
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
}

.section-header p {
    font-size: 1.1rem;
    color: var(--primary-silver);
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    padding: var(--spacing-xxl) 0;
    background: white;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xxl);
}

.about-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.about-item.reverse {
    direction: rtl;
}

.about-item.reverse > * {
    direction: ltr;
}

.about-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.about-text h3 {
    font-size: 1.8rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.about-text h3 i {
    color: var(--accent-blue);
}

.about-text p {
    color: var(--primary-silver);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.features, .principles {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.feature, .principle {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(74, 144, 226, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    color: var(--accent-blue);
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
}

/* Benefits Section */
.benefits {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(167, 176, 199, 0.1) 100%);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.benefit-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(167, 176, 199, 0.1);
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.benefit-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent-blue), #357ABD);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: white;
    font-size: 2rem;
}

.benefit-card h3 {
    font-size: 1.3rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-dark);
    margin-bottom: var(--spacing-sm);
}

.benefit-card p {
    color: var(--primary-silver);
    line-height: 1.6;
}

/* Testimonials Section */
.testimonials {
    padding: var(--spacing-xxl) 0;
    background: white;
}

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

.testimonial-card {
    background: var(--primary-light);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.testimonial-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--accent-blue);
}

.testimonial-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.testimonial-info h4 {
    font-size: 1.1rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-dark);
    margin-bottom: var(--spacing-xs);
}

.testimonial-info p {
    font-size: 0.9rem;
    color: var(--primary-silver);
    margin-bottom: var(--spacing-xs);
}

.rating {
    display: flex;
    gap: 2px;
}

.rating i {
    color: var(--accent-gold);
    font-size: 0.9rem;
}

.testimonial-content p {
    color: var(--primary-dark);
    line-height: 1.6;
    font-style: italic;
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, #2C3E50 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

.cta-content > p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
}

.cta-feature i {
    color: var(--accent-gold);
    font-size: 1.2rem;
}

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

/* Footer */
.footer {
    background: var(--primary-dark);
    color: var(--primary-light);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

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

.footer-section h3, .footer-section h4 {
    margin-bottom: var(--spacing-md);
    color: white;
}

.footer-section p {
    color: var(--primary-silver);
    margin-bottom: var(--spacing-md);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
    color: var(--primary-silver);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--accent-blue);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(167, 176, 199, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-silver);
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--accent-blue);
    color: white;
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid rgba(167, 176, 199, 0.2);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--primary-silver);
}

.footer-bottom p {
    margin-bottom: var(--spacing-xs);
}

/* Fixed CTA Button */
.fixed-cta {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
}

.fixed-cta-button {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: linear-gradient(135deg, var(--accent-blue), #357ABD);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-xl);
    font-family: var(--font-primary);
    font-size: 1.1rem;
    font-weight: var(--font-weight-bold);
    cursor: pointer;
    box-shadow: var(--shadow-xl);
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
    position: relative;
    overflow: hidden;
}

.fixed-cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(74, 144, 226, 0.3);
}

.fixed-cta-button::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, #4A90E2, #D4AF37, #4A90E2);
    border-radius: var(--radius-xl);
    z-index: -1;
    animation: breathe 3s ease-in-out infinite;
    opacity: 0.7;
}

@keyframes breathe {
    0%, 100% {
        transform: scale(1);
        opacity: 0.7;
    }
    50% {
        transform: scale(1.05);
        opacity: 1;
    }
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .nav {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .about-item {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .about-item.reverse {
        direction: ltr;
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .benefit-card {
        padding: var(--spacing-lg);
    }
    
    .benefit-card h3 {
        font-size: 1.1rem;
    }
    
    .benefit-card p {
        font-size: 0.9rem;
    }
    
    .benefit-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-features {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .fixed-cta {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
        transform: none;
        bottom: var(--spacing-sm);
    }
    
    .fixed-cta-button {
        width: 100%;
        justify-content: center;
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 1rem;
    }
    
    .fixed-cta-button .kakao-icon {
        width: 32px;
        height: 32px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
    
    .profile-card {
        padding: var(--spacing-lg);
    }
    
    .profile-image {
        width: 150px;
        height: 150px;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .benefit-card {
        padding: var(--spacing-md);
    }
    
    .benefit-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .fixed-cta-button {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.9rem;
    }
    
    .fixed-cta-button .kakao-icon {
        width: 32px;
        height: 32px;
    }
}