/* ========================================
   대우사 DAEWOOSA - 남성복 도매 홍보 사이트
   - 서문시장 40년 전통
   - B2B 도매 바이어 신뢰 중심 디자인
   - 블루 톤 브랜드 컬러
======================================== */

/* ===== CSS Variables ===== */
:root {
    /* Brand Colors - 차분한 블루 톤 */
    --primary-color: #2c5aa0;
    --primary-dark: #1e3f70;
    --primary-light: #4970a8;
    --secondary-color: #5a7fa5;
    --accent-color: #8b9eb8;
    
    /* Neutral Colors */
    --dark: #1a1a1a;
    --gray-dark: #4a4a4a;
    --gray: #707070;
    --gray-light: #c0c0c0;
    --light: #f5f5f5;
    --white: #ffffff;
    
    /* Typography */
    --font-primary: 'Noto Sans KR', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-padding: 0 20px;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

ul {
    list-style: none;
}

/* ===== Utility Classes ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray);
    font-weight: 300;
}

/* ===== Header & Navigation ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo img {
    height: 60px;
    width: auto;
}

.nav-list {
    display: flex;
    gap: 30px;
}

.nav-link {
    font-size: 1rem;
    font-weight: 500;
    color: var(--dark);
    padding: 8px 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark);
    cursor: pointer;
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    color: var(--white);
    padding-top: 100px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><rect fill="%232c5aa0" width="1200" height="600"/><g fill-opacity="0.05"><polygon fill="%23fff" points="1200 0 0 0 0 600"/></g></svg>');
    background-size: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--white);
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 20px;
}

.hero-title .highlight {
    color: #ffd54f;
}

.hero-subtitle {
    font-size: 1.2rem;
    font-weight: 300;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background-color: #ffd54f;
    color: var(--dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

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

.btn-lg {
    padding: 18px 40px;
    font-size: 1.1rem;
}

/* ===== About Section ===== */
.about {
    padding: var(--section-padding);
    background-color: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.about-item {
    text-align: center;
    padding: 30px 20px;
    background-color: var(--light);
    border-radius: 12px;
    transition: var(--transition);
}

.about-item:hover {
    background-color: var(--primary-light);
    color: var(--white);
    transform: translateY(-8px);
    box-shadow: 0 8px 20px rgba(44, 90, 160, 0.2);
}

.about-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.about-item:hover .about-icon {
    color: var(--white);
}

.about-item h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.about-item p {
    font-size: 1rem;
    line-height: 1.6;
}

/* ===== Features Section ===== */
.features {
    padding: var(--section-padding);
    background-color: var(--light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: var(--white);
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    border-top: 4px solid var(--primary-color);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.feature-number {
    display: inline-block;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: 50%;
    text-align: center;
    line-height: 50px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--dark);
}

.feature-card p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--gray-dark);
}

/* ===== Products Section ===== */
.products {
    padding: var(--section-padding);
    background-color: var(--white);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.product-card {
    background-color: var(--light);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.product-image {
    position: relative;
    width: 100%;
    height: 350px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.product-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.product-info {
    padding: 25px;
}

.product-info h3 {
    font-size: 1.4rem;
    margin-bottom: 12px;
    color: var(--dark);
}

.product-info p {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-dark);
}

.products-note {
    text-align: center;
    padding: 20px;
    background-color: #e3f2fd;
    border-radius: 8px;
    color: var(--primary-dark);
}

.products-note i {
    margin-right: 8px;
}

/* ===== Contact Section ===== */
.contact {
    padding: var(--section-padding);
    background-color: var(--light);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.contact-card {
    background-color: var(--white);
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.contact-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.contact-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--dark);
}

.contact-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.contact-desc {
    font-size: 0.95rem;
    color: var(--gray);
}

.contact-cta {
    text-align: center;
    padding: 50px 30px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 12px;
}

.contact-cta-text {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 30px;
}

/* ===== Footer ===== */
.footer {
    background-color: var(--dark);
    color: var(--light);
    padding: 50px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: 30px;
    align-items: center;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo img {
    height: 80px;
    width: auto;
}

.footer-info p {
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.footer-copyright {
    text-align: right;
    font-size: 0.9rem;
    color: var(--gray-light);
}

/* ===== Scroll to Top Button ===== */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-5px);
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .nav-list {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-copyright {
        text-align: center;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .logo img {
        height: 50px;
    }
    
    .hero-title {
        font-size: 1.6rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .feature-card,
    .contact-card {
        padding: 30px 20px;
    }
}