@charset "UTF-8";

/* ---------- Global Variables & Design System ---------- */
:root {
    /* High-End Dark Luxury Color Palette */
    --color-bg: #111211; /* Deep charcoal with a hint of green */
    --color-surface: rgba(255, 255, 255, 0.02); /* Glassmorphic base */
    --color-surface-hover: rgba(255, 255, 255, 0.04);
    --color-dark: #080908; /* Deepest obsidian for contrast areas */
    --color-dark-alt: #161A17; /* Dark forest tone for distinct sections */
    
    --color-primary: #C5A880; /* Elegant champagne gold */
    --color-primary-hover: #E8DCC4; /* Lighter warm beige/gold */
    --color-border: rgba(197, 168, 128, 0.15); /* Subtle gold borders */
    
    --color-text-main: #F5F5F0; /* High legibility ivory */
    --color-text-muted: #9A9A9A; /* Sophisticated grey for secondary text */
    --color-white: #FFFFFF;

    /* Typography */
    --font-sans: 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif-en: 'Playfair Display', serif;
    --font-serif-kr: 'Noto Serif KR', serif;

    /* Animation & Easing */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out-quint: cubic-bezier(0.86, 0, 0.07, 1);
    --transition-fast: all 0.3s ease;
    --transition-slow: all 0.7s var(--ease-out-expo);
}

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

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

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text-main);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Custom Scrollbar for Dark Theme */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
    background: rgba(197, 168, 128, 0.3);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(197, 168, 128, 0.6);
}

::selection {
    background-color: var(--color-primary);
    color: var(--color-bg);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif-kr);
    font-weight: 400;
    line-height: 1.3;
    color: var(--color-text-main);
}

.en-text {
    font-family: var(--font-serif-en);
}

/* ---------- Layout Containers ---------- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2.5rem;
}

.section {
    padding: 10rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-title {
    font-size: 2.8rem;
    font-family: var(--font-serif-en);
    color: var(--color-text-main);
    margin-bottom: 1.2rem;
    position: relative;
    display: inline-block;
    letter-spacing: 2px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 1px;
    height: 30px;
    background-color: var(--color-primary);
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    margin-top: 3rem;
    font-weight: 300;
    letter-spacing: -0.3px;
}

/* ---------- Buttons ---------- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1.2rem 3rem;
    background-color: var(--color-primary);
    color: var(--color-bg); /* Dark text on gold for premium contrast */
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition-slow);
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.7s ease;
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    box-shadow: 0 15px 30px rgba(197, 168, 128, 0.2);
    transform: translateY(-2px);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-outline {
    display: inline-block;
    padding: 0.8rem 2.2rem;
    border: 1px solid var(--color-primary);
    color: var(--color-primary) !important;
    background: transparent;
    font-size: 0.9rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    transition: var(--transition-fast);
}

.btn-outline:hover {
    background-color: var(--color-primary);
    color: var(--color-bg) !important;
    box-shadow: 0 0 20px rgba(197, 168, 128, 0.3);
}

.w-100 {
    width: 100%;
}

/* ---------- Navigation ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(17, 18, 17, 0.85); /* Dark blur */
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--color-border);
    padding: 1.5rem 0;
    transition: padding 0.4s ease, background 0.4s ease;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-serif-en);
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--color-text-main);
    letter-spacing: 4px;
    text-transform: uppercase;
    transition: var(--transition-fast);
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 3.5rem;
}

.nav-links a:not(.btn-outline) {
    font-size: 0.85rem;
    font-weight: 300;
    color: var(--color-text-main);
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    padding-bottom: 6px;
    transition: color 0.3s ease;
}

.nav-links a:not(.btn-outline):hover {
    color: var(--color-primary);
}

.nav-links a:not(.btn-outline)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: 0;
    left: 50%;
    background-color: var(--color-primary);
    transition: all 0.4s var(--ease-out-expo);
    transform: translateX(-50%);
}

.nav-links a:not(.btn-outline):hover::after {
    width: 100%;
}

/* ---------- Hero Section ---------- */
#hero {
    position: relative;
    height: 100vh;
    min-height: 800px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-color: var(--color-dark); /* Fallback */
    background-image: url('https://images.unsplash.com/photo-1579549326442-70b991444983?ixlib=rb-4.0.3&auto=format&fit=crop&w=2000&q=80');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--color-text-main);
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Darker gradient for high contrast against text */
    background: linear-gradient(180deg, rgba(8,9,8,0.4) 0%, rgba(17,18,17,0.95) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 0 2rem;
    animation: fadeSlideUp 1.2s var(--ease-out-expo) 0.2s backwards;
}

.hero-subtitle {
    font-family: var(--font-serif-en);
    font-size: 1rem;
    letter-spacing: 8px;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 2rem;
    display: block;
}

.hero-title {
    font-size: 5rem;
    line-height: 1.2;
    margin-bottom: 2rem;
    font-weight: 300;
    letter-spacing: -1px;
    color: var(--color-text-main);
    text-shadow: 0 10px 40px rgba(0,0,0,0.8);
}

.hero-desc {
    font-size: 1.2rem;
    font-weight: 300;
    color: rgba(245, 245, 240, 0.7);
    margin-bottom: 3.5rem;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: rgba(197, 168, 128, 0.6);
    font-size: 0.75rem;
    font-family: var(--font-serif-en);
    text-transform: uppercase;
    letter-spacing: 3px;
    animation: fadeIn 2s ease 1s backwards;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 1px solid rgba(197, 168, 128, 0.4);
    border-radius: 20px;
    position: relative;
}

.wheel {
    width: 2px;
    height: 6px;
    background-color: var(--color-primary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s cubic-bezier(0.15, 0.41, 0.69, 0.94) infinite;
}

@keyframes scrollWheel {
    0% { transform: translate(-50%, 0); opacity: 1; }
    50% { opacity: 1; }
    100% { transform: translate(-50%, 18px); opacity: 0; }
}

@keyframes fadeSlideUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

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

/* ---------- Services Section ---------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.service-card {
    background: var(--color-surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 4.5rem 3rem;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    transition: var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, rgba(197,168,128,0.1), transparent);
    opacity: 0;
    transition: var(--transition-slow);
}

.service-card::after {
    content: '';
    position: absolute;
    top: -1px; left: -1px; right: -1px; bottom: -1px;
    border: 1px solid var(--color-primary);
    border-radius: 4px;
    opacity: 0;
    transition: var(--transition-slow);
    pointer-events: none;
}

.service-card:hover {
    transform: translateY(-12px);
    background: var(--color-surface-hover);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(197, 168, 128, 0.05);
}

.service-card:hover::before {
    opacity: 1;
}

.service-card:hover::after {
    opacity: 0.5;
    transform: scale(0.98);
}

.card-icon {
    font-size: 2.8rem;
    margin-bottom: 2rem;
    filter: sepia(100%) hue-rotate(350deg) saturate(80%) brightness(80%);
    transition: var(--transition-slow);
    position: relative;
    z-index: 2;
}

.service-card:hover .card-icon {
    filter: sepia(100%) hue-rotate(350deg) saturate(150%) brightness(110%);
    transform: scale(1.1) translateY(-5px);
}

.service-card h4 {
    font-size: 1.4rem;
    color: var(--color-text-main);
    margin-bottom: 1.2rem;
    position: relative;
    z-index: 2;
}

.service-card p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    position: relative;
    z-index: 2;
}

/* ---------- Pricing / Estimate (Glassmorphism) ---------- */
.bg-dark-green {
    background-color: var(--color-dark-alt);
    background-image: radial-gradient(circle at 50% 0%, rgba(197, 168, 128, 0.05) 0%, transparent 70%);
    border-top: 1px solid rgba(255,255,255,0.02);
    border-bottom: 1px solid rgba(255,255,255,0.02);
}

.calculator-glass {
    background: rgba(17, 18, 17, 0.6);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border: 1px solid var(--color-border);
    padding: 5rem 4rem;
    max-width: 900px;
    margin: 0 auto;
    box-shadow: 0 40px 100px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    border-radius: 8px;
}

.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    position: relative;
}

.form-group label {
    font-family: var(--font-serif-en);
    font-size: 0.8rem;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.form-group input,
.form-group select {
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--color-text-main);
    padding: 0.8rem 0;
    font-size: 1.1rem;
    font-family: var(--font-sans);
    font-weight: 300;
    transition: var(--transition-fast);
    border-radius: 0;
    -webkit-appearance: none;
}

.form-group input::placeholder {
    color: rgba(245, 245, 240, 0.2);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-bottom-color: var(--color-primary);
    box-shadow: 0 1px 0 var(--color-primary);
}

.form-group select option {
    background-color: var(--color-dark);
    color: var(--color-text-main);
    padding: 1rem;
}

.calc-result-box {
    margin-top: 3.5rem;
    padding: 3rem;
    background: linear-gradient(135deg, rgba(197, 168, 128, 0.08), rgba(197, 168, 128, 0.01));
    border: 1px solid var(--color-border);
    border-radius: 4px;
    text-align: center;
    animation: fadeSlideUp 0.6s var(--ease-out-expo) forwards;
}

.calc-result-box.hidden {
    display: none;
}

.calc-result-box p {
    font-family: var(--font-serif-en);
    font-size: 1.1rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.calc-result-box strong {
    font-size: 3.5rem;
    font-family: var(--font-sans);
    font-weight: 300;
    color: var(--color-primary);
    display: block;
    margin: 1rem 0;
    letter-spacing: -1px;
    text-shadow: 0 0 20px rgba(197, 168, 128, 0.2);
}

/* ---------- Portfolio Section ---------- */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 3/4;
    cursor: pointer;
    background: var(--color-dark);
    border-radius: 4px;
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 1.2s var(--ease-out-expo), opacity 1.2s ease, filter 1.2s ease;
    opacity: 0.7; /* Darkened by default in dark theme */
    filter: grayscale(20%);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(8,9,8,0.95) 0%, rgba(8,9,8,0.3) 60%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: flex-start;
    padding: 3rem;
    opacity: 1; /* Always show gradients slightly in dark mode */
    transition: background 0.6s ease;
    color: var(--color-white);
}

.portfolio-item:hover img {
    transform: scale(1.08);
    opacity: 0.3;
    filter: grayscale(0%);
}

.portfolio-item:hover .portfolio-overlay {
    background: linear-gradient(to top, rgba(8,9,8,1) 0%, rgba(8,9,8,0.6) 50%, rgba(8,9,8,0.2) 100%);
}

.portfolio-overlay h5 {
    font-family: var(--font-serif-en);
    font-size: 1.8rem;
    margin-bottom: 0.8rem;
    transform: translateY(20px);
    opacity: 0.8;
    transition: transform 0.6s var(--ease-out-expo) 0.1s, opacity 0.6s ease;
}

.portfolio-overlay p {
    font-size: 0.8rem;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 3px;
    transform: translateY(20px);
    opacity: 0;
    transition: transform 0.6s var(--ease-out-expo) 0.2s, opacity 0.6s ease;
}

.portfolio-item:hover .portfolio-overlay h5 {
    transform: translateY(0);
    opacity: 1;
}

.portfolio-item:hover .portfolio-overlay p {
    transform: translateY(0);
    opacity: 1;
}

/* ---------- Contact Section ---------- */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 6rem;
    background: var(--color-surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.03);
    padding: 6rem;
    box-shadow: 0 40px 100px rgba(0,0,0,0.5);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.contact-wrapper::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    opacity: 0.5;
}

.contact-info .section-title {
    text-align: left;
    margin-bottom: 2rem;
}

.contact-info .section-title::after {
    left: 0;
    transform: none;
}

.contact-info > p {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 4rem;
    line-height: 1.8;
}

.contact-details p {
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    color: var(--color-text-main);
    display: flex;
    align-items: center;
}

.contact-details strong {
    display: inline-block;
    width: 100px;
    color: var(--color-primary);
    font-family: var(--font-serif-en);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.contact-form .form-group {
    margin-bottom: 2.5rem;
}

.contact-form .form-group input,
.contact-form .form-group select,
.contact-form .form-group textarea {
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-text-main);
    padding: 1rem 0;
    font-size: 1.05rem;
    width: 100%;
    transition: var(--transition-fast);
    font-family: var(--font-sans);
}

.contact-form .form-group input::placeholder,
.contact-form .form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.2);
    font-weight: 300;
}

.contact-form .form-group input:focus,
.contact-form .form-group select:focus,
.contact-form .form-group textarea:focus {
    outline: none;
    border-bottom-color: var(--color-primary);
    box-shadow: 0 1px 0 var(--color-primary);
    background: rgba(255, 255, 255, 0.01); /* Slight highlight on focus */
}

.contact-form .form-group select option {
    background-color: var(--color-dark);
    color: var(--color-text-main);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .btn-primary {
    margin-top: 2rem;
    padding: 1.4rem;
    width: 100%;
}

/* ---------- Footer ---------- */
.footer {
    background-color: var(--color-dark);
    padding: 6rem 0 4rem;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.02);
}

.footer-brand {
    font-family: var(--font-serif-en);
    font-size: 2rem;
    color: var(--color-primary);
    letter-spacing: 8px;
    margin-bottom: 2rem;
    text-transform: uppercase;
}

.footer-copyright {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    letter-spacing: 1px;
    font-weight: 300;
}

/* ---------- Responsive Design ---------- */
@media (max-width: 1200px) {
    .container { padding: 0 3rem; }
    .hero-title { font-size: 4rem; }
    .contact-wrapper { padding: 4rem; gap: 4rem; }
}

@media (max-width: 992px) {
    .section { padding: 7rem 0; }
    .calc-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-wrapper { grid-template-columns: 1fr; }
    .calculator-glass { padding: 4rem 3rem; }
}

@media (max-width: 768px) {
    .nav-links { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; margin-top: 0.5rem; }
    .nav-links .btn-outline { padding: 0.5rem 1rem; }
    .nav-container { padding: 1rem 1.5rem; flex-direction: column; }
    
    .hero-title { font-size: 2.8rem; }
    .hero-desc { font-size: 1.05rem; }
    
    .section { padding: 5rem 0; }
    .section-title { font-size: 2.2rem; }
    
    .services-grid { grid-template-columns: 1fr; }
    .portfolio-grid { grid-template-columns: 1fr; }
    
    .calculator-glass { 
        padding: 3rem 1.5rem; 
        border-width: 0; 
        border-top: 1px solid var(--color-border); 
        border-bottom: 1px solid var(--color-border); 
        border-radius: 0;
        box-shadow: none;
    }
    .calc-result-box strong { font-size: 2.5rem; }
    
    .contact-wrapper { 
        padding: 3rem 1.5rem; 
        box-shadow: none; 
        border: none;
        border-top: 1px solid rgba(255,255,255,0.05); 
        border-radius: 0;
    }
    .container { padding: 0 1.5rem; }
}
```