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

:root {
    --primary-color: #2c3e50; /* Deep Stone Grey */
    --accent-color: #bfa67a;  /* Soft Gold / Brass */
    --bg-light: #f9f7f2;     /* Warm Beige Background */
    --text-dark: #333333;
    --text-muted: #777777;
    --white: #ffffff;
    --container-width: 1200px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard Variable", Pretendard, "Noto Sans KR", sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 2px;
    background-color: var(--accent-color);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--accent-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: #a88d5e;
    transform: translateY(-2px);
}

.btn-dark {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-dark:hover {
    background-color: #1a252f;
}

.btn-lg {
    padding: 15px 40px;
    font-size: 1.1rem;
}

.w-100 {
    width: 100%;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background-color: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: background-color 0.3s ease, height 0.3s ease;
}

header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    height: 70px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 0 20px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 32px;
    width: auto;
}

.logo span {
    font-size: 1.3rem;
    font-weight: 800;
    color: #1a1a1a;
    letter-spacing: -0.03em;
    font-family: "Apple SD Gothic Neo", "Pretendard Variable", Pretendard, sans-serif;
}

.gnb ul {
    display: flex;
    gap: 40px;
}

.gnb ul li a {
    font-weight: 500;
    color: var(--text-dark);
    transition: var(--transition);
}

.gnb ul li a:hover {
    color: var(--accent-color);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background-color: var(--primary-color);
}

/* Footer */
footer {
    padding: 40px 0 40px;
    background: var(--primary-color);
    color: var(--white);
}

.footer-info {
    margin-bottom: 30px;
}

.footer-info p {
    margin-bottom: 8px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

.footer-info .info-item {
    display: inline-block;
}

.footer-info .divider {
    margin: 0 12px;
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.85rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    text-align: left;
}

/* Modern Mobile Navigation Overlay */
@media (max-width: 768px) {
    header { height: 70px; }
    
    .logo a {
        align-items: center;
    }
    
    .logo img {
        transform: translateY(2px);
    }

    .mobile-menu-btn { 
        display: flex; 
        z-index: 1001;
        transition: var(--transition);
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    .mobile-menu-btn.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .gnb {
        display: block;
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        padding: 50px 20px;
        transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1000;
        opacity: 0;
        overflow-y: auto;
        border-top: 1px solid rgba(0,0,0,0.05);
    }

    .gnb.active {
        right: 0;
        opacity: 1;
    }

    .gnb ul {
        flex-direction: column;
        align-items: center;
        gap: 30px;
    }

    .gnb ul li a {
        font-size: 1.5rem;
        font-family: 'Playfair Display', serif;
    }

    .section { padding: 60px 0; }
    .section-title { font-size: 2rem; }
    
    .footer-info p {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
    .footer-info .divider {
        display: none;
    }
    .footer-bottom {
        text-align: left;
    }
}