/* ========================================
   RESET & BASE STYLES
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color Palette */
    --bg-primary: #0a0e1a;
    --bg-secondary: #0f1419;
    --bg-card: #151921;
    --neon-green: #b4ff00;
    --neon-cyan: #00d4ff;
    --neon-pink: #ff0080;
    --text-primary: #ffffff;
    --text-secondary: #8b92a7;
    --text-muted: #5a6175;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ========================================
   NAVIGATION
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(180, 255, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.logo:hover {
    color: var(--neon-green);
}

.logo i {
    color: var(--neon-green);
    font-size: 1.3rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-menu a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: var(--neon-green);
}

.btn-contact {
    background: transparent;
    border: 2px solid var(--neon-green);
    color: var(--neon-green) !important;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    font-weight: 700;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.btn-contact:hover {
    background: var(--neon-green);
    color: var(--bg-primary) !important;
    box-shadow: 0 0 20px rgba(180, 255, 0, 0.5);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 70px;
    background: linear-gradient(135deg, #0a0e1a 0%, #0f1419 50%, #151921 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.hero-bg-image {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(10, 14, 26, 0.85) 0%, rgba(15, 20, 25, 0.75) 50%, rgba(10, 14, 26, 0.85) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
}

.hero-badge {
    display: inline-block;
    background: transparent;
    border: 1px solid var(--neon-green);
    color: var(--neon-green);
    padding: 0.6rem 1.5rem;
    border-radius: 25px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-xl);
    text-transform: uppercase;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 0 30px rgba(180, 255, 0, 0.3);
}

.hero-title .highlight {
    color: var(--neon-green);
    text-shadow: 
        0 0 10px rgba(180, 255, 0, 0.8),
        0 0 20px rgba(180, 255, 0, 0.6),
        0 0 30px rgba(180, 255, 0, 0.4);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--neon-green);
    color: var(--bg-primary);
    box-shadow: 0 0 20px rgba(180, 255, 0, 0.4);
}

.btn-primary:hover {
    background: #c8ff33;
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(180, 255, 0, 0.6);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    border-color: var(--neon-green);
    color: var(--neon-green);
    box-shadow: 0 0 20px rgba(180, 255, 0, 0.3);
}

/* ========================================
   WHY SECTION
   ======================================== */
.why-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--neon-green);
    box-shadow: 0 0 10px rgba(180, 255, 0, 0.6);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.why-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all 0.3s ease;
}

.why-card:hover {
    transform: translateY(-5px);
    border-color: var(--neon-green);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.why-icon {
    font-size: 3.5rem;
    color: var(--neon-green);
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 0 10px rgba(180, 255, 0, 0.6));
}

.why-icon.cyan {
    color: var(--neon-cyan);
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.6));
}

.why-icon.pink {
    color: var(--neon-pink);
    filter: drop-shadow(0 0 10px rgba(255, 0, 128, 0.6));
}

.why-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.why-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   MEMBERSHIP SECTION
   ======================================== */
.membership-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-primary);
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-2xl);
    text-transform: uppercase;
}

.membership-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.membership-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all 0.3s ease;
}

.membership-card:hover {
    transform: translateY(-5px);
    border-color: rgba(180, 255, 0, 0.3);
}

.membership-card.featured {
    border: 2px solid var(--neon-green);
    box-shadow: 0 0 30px rgba(180, 255, 0, 0.15);
}

.card-header {
    margin-bottom: var(--spacing-lg);
}

.card-badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.card-badge.green {
    background: rgba(180, 255, 0, 0.1);
    color: var(--neon-green);
    border: 1px solid rgba(180, 255, 0, 0.3);
}

.card-badge.cyan {
    background: rgba(0, 212, 255, 0.1);
    color: var(--neon-cyan);
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.card-badge-special {
    display: inline-block;
    background: var(--neon-green);
    color: var(--bg-primary);
    padding: 0.4rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.card-title {
    font-size: 1.3rem;
    font-weight: 700;
}

.card-price {
    margin: var(--spacing-lg) 0;
}

.price-amount {
    font-size: 2.8rem;
    font-weight: 900;
    color: var(--text-primary);
}

.price-unit {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-left: 0.3rem;
}

.price-line {
    height: 3px;
    margin: var(--spacing-md) 0;
    border-radius: 2px;
}

.price-line.green {
    background: var(--neon-green);
    box-shadow: 0 0 10px rgba(180, 255, 0, 0.5);
}

.price-line.cyan {
    background: var(--neon-cyan);
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.card-highlight {
    background: rgba(180, 255, 0, 0.1);
    color: var(--neon-green);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    text-align: center;
    font-size: 0.85rem;
    font-weight: 600;
    margin: var(--spacing-md) 0;
}

.card-features {
    list-style: none;
    margin-top: var(--spacing-md);
}

.card-features li {
    padding: var(--spacing-sm) 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-features i {
    color: var(--neon-green);
    font-size: 0.9rem;
}

/* Special Program */
.special-program {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.program-badge {
    display: inline-block;
    background: rgba(255, 0, 128, 0.1);
    color: var(--neon-pink);
    padding: 0.4rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    border: 1px solid rgba(255, 0, 128, 0.3);
}

.program-title {
    font-size: 1.8rem;
    font-weight: 900;
    margin-bottom: var(--spacing-sm);
}

.program-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.program-features {
    list-style: none;
}

.program-features li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.program-features i {
    color: var(--neon-green);
}

.program-price-box {
    text-align: center;
}

.program-price {
    margin-bottom: var(--spacing-md);
}

.program-price .amount {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--text-primary);
}

.program-price .unit {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.btn-consultation {
    background: var(--neon-green);
    color: var(--bg-primary);
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-consultation:hover {
    background: #c8ff33;
    box-shadow: 0 0 20px rgba(180, 255, 0, 0.5);
}

/* Additional Options */
.additional-options {
    display: block;
}

.option-box-single {
    background: rgba(21, 25, 33, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
}

.option-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.option-items {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.option-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.price-highlight {
    color: var(--neon-green);
    font-size: 1.3rem;
    font-weight: 900;
}

.option-note {
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: var(--spacing-sm);
    line-height: 1.6;
}

/* ========================================
   CALCULATOR SECTION
   ======================================== */
.calculator-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.calculator-card {
    background: var(--bg-card);
    border: 1px solid rgba(180, 255, 0, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    max-width: 700px;
    margin: 0 auto;
}

.calculator-form {
    margin-bottom: var(--spacing-xl);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.form-input,
.form-select {
    background: var(--bg-primary);
    border: 2px solid rgba(180, 255, 0, 0.2);
    border-radius: var(--radius-md);
    padding: 1rem 1.5rem;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    font-family: 'Noto Sans KR', sans-serif;
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--neon-green);
    box-shadow: 0 0 10px rgba(180, 255, 0, 0.3);
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%23b4ff00' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1.5rem center;
    padding-right: 3rem;
}

.btn-calculate {
    width: 100%;
    background: var(--neon-green);
    color: var(--bg-primary);
    padding: 1.2rem;
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: 900;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-calculate:hover {
    background: #c8ff33;
    box-shadow: 0 0 30px rgba(180, 255, 0, 0.5);
}

.calculator-results {
    animation: fadeIn 0.5s ease;
}

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

.result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.result-card {
    background: var(--bg-primary);
    border: 1px solid rgba(180, 255, 0, 0.2);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
}

.result-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.result-value {
    font-size: 2.5rem;
    font-weight: 900;
}

.result-value.green {
    color: var(--neon-green);
    text-shadow: 0 0 20px rgba(180, 255, 0, 0.5);
}

.result-value.cyan {
    color: var(--neon-cyan);
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.result-tip {
    background: rgba(180, 255, 0, 0.1);
    border: 1px solid rgba(180, 255, 0, 0.3);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--neon-green);
}

.result-tip i {
    font-size: 1.5rem;
}

/* ========================================
   LOCATION SECTION
   ======================================== */
.location-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-primary);
}

.section-subtitle-alt {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: var(--spacing-2xl);
}

.highlight-text {
    color: var(--neon-green);
    font-weight: 700;
}

.location-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.location-map {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.map-container {
    width: 100%;
    height: 400px;
    background: var(--bg-card);
    border: 1px solid rgba(180, 255, 0, 0.1);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.map-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.info-card {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.info-card:hover {
    border-color: rgba(180, 255, 0, 0.3);
    transform: translateX(5px);
}

.info-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.info-icon.green {
    background: rgba(180, 255, 0, 0.15);
    color: var(--neon-green);
}

.info-icon.cyan {
    background: rgba(0, 212, 255, 0.15);
    color: var(--neon-cyan);
}

.info-icon.pink {
    background: rgba(255, 0, 128, 0.15);
    color: var(--neon-pink);
}

.info-content {
    flex: 1;
}

.info-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.3rem;
}

.info-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ========================================
   GALLERY SECTION
   ======================================== */
.gallery-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.gallery-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    aspect-ratio: 1;
    cursor: pointer;
    transition: transform 0.3s ease;
}

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

.gallery-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.8);
}

.gallery-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--bg-secondary);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    border-top: 1px solid rgba(180, 255, 0, 0.1);
}

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

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer-logo i {
    color: var(--neon-green);
    font-size: 1.5rem;
}

.footer-text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.footer-contact {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.footer-contact p {
    margin: 0.3rem 0;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 968px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .nav-menu {
        gap: var(--spacing-md);
        font-size: 0.9rem;
    }
    
    .why-grid {
        grid-template-columns: 1fr;
    }
    
    .membership-grid {
        grid-template-columns: 1fr;
    }
    
    .special-program {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .result-grid {
        grid-template-columns: 1fr;
    }
    
    .location-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .option-items {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .nav-menu {
        display: none;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
}