/* ============================================
   HDH Design System v2.0 - Static Site Build
   (주)현대하이텍 IT사업부
   Combined: main.css + animations.css
   ============================================ */

/* ─── CSS 변수 ─── */
:root {
    /* 브랜드 컬러 */
    --hdh-black: #222222;
    --hdh-white: #FFFFFF;
    --hdh-navy: #1a2a4a;
    --hdh-accent: #2563EB;
    --hdh-accent-light: #3B82F6;
    --hdh-accent-dark: #1D4ED8;

    /* 중립 컬러 */
    --hdh-gray-50: #FAFAFA;
    --hdh-gray-100: #F5F5F5;
    --hdh-gray-200: #E5E5E5;
    --hdh-gray-300: #D4D4D4;
    --hdh-gray-400: #A3A3A3;
    --hdh-gray-500: #737373;
    --hdh-gray-600: #525252;
    --hdh-gray-700: #404040;
    --hdh-gray-800: #262626;
    --hdh-gray-900: #171717;

    /* 타이포그래피 */
    --font-primary: 'Pretendard Variable', 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* 간격 */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* 레이아웃 */
    --container-max: 1200px;
    --header-height: 70px;

    /* 그림자 */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
    --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.1);

    /* 둥근 모서리 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* 트랜지션 */
    --transition: all 0.3s ease;
    --ease-out: cubic-bezier(0.33, 1, 0.68, 1);
    --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
    --duration-base: 0.3s;
}

/* ─── 리셋 ─── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--hdh-gray-800);
    background: var(--hdh-white);
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul, ol { list-style: none; }

/* ─── 유틸리티 ─── */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

.text-center { text-align: center; }

.sr-only {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ─── 버튼 ─── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    white-space: nowrap;
}

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

.btn--outline-dark {
    background: transparent;
    color: var(--hdh-gray-700);
    border: 1px solid var(--hdh-gray-300);
    padding: 10px 30px;
}
.btn--outline-dark:hover {
    border-color: var(--hdh-accent);
    color: var(--hdh-accent);
}

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

.btn--category {
    padding: 10px 28px;
    font-size: var(--text-sm);
    font-weight: 500;
    border: 1px solid var(--hdh-gray-300);
    border-radius: var(--radius-sm);
    color: var(--hdh-gray-500);
    background: var(--hdh-white);
}
.btn--category.active {
    background: var(--hdh-accent);
    color: var(--hdh-white);
    border-color: var(--hdh-accent);
}
.btn--category:hover:not(.active) {
    border-color: var(--hdh-accent);
    color: var(--hdh-accent);
}

/* ============================================
   헤더 & 네비게이션
   ============================================ */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    height: var(--header-height);
    background: var(--hdh-white);
    border-bottom: 1px solid var(--hdh-gray-200);
    transition: var(--transition);
}

.site-header.scrolled {
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

/* 로고 */
.site-logo {
    display: flex;
    align-items: center;
    gap: 6px;
    z-index: 1001;
}

.site-logo .logo-bold {
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--hdh-black);
    letter-spacing: 0.02em;
}

.site-logo .logo-text {
    font-size: 1rem;
    font-weight: 400;
    color: var(--hdh-gray-600);
}

.site-logo img {
    height: 36px;
    width: auto;
}

/* 네비게이션 */
.nav-primary {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 0;
}

.nav-list li {
    position: relative;
}

.nav-list li a {
    display: block;
    padding: 0 18px;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--hdh-gray-700);
    line-height: var(--header-height);
    transition: color 0.2s;
}

.nav-list li a:hover,
.nav-list li.current-menu-item a,
.nav-list li.current_page_item a,
.nav-list li.active a {
    color: var(--hdh-black);
    font-weight: 600;
}

/* 우측 아이콘들 */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    color: var(--hdh-gray-700);
    transition: color 0.2s;
}
.nav-icon:hover { color: var(--hdh-black); }

.btn-login {
    padding: 6px 18px;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--hdh-gray-700);
    border: 1px solid var(--hdh-gray-300);
    border-radius: 20px;
    transition: var(--transition);
}
.btn-login:hover {
    border-color: var(--hdh-black);
    color: var(--hdh-black);
}

/* 모바일 메뉴 토글 */
.menu-toggle {
    display: none;
    width: 32px; height: 32px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
    z-index: 1001;
}
.menu-toggle span {
    display: block; width: 22px; height: 2px;
    background: var(--hdh-black);
    transition: var(--transition);
}
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }

/* ============================================
   히어로 슬라이더
   ============================================ */
.hero-slider {
    position: relative;
    width: 100%;
    height: 500px;
    margin-top: var(--header-height);
    overflow: hidden;
}

.slider-track {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1s ease;
}

.slide.active {
    opacity: 1;
}

.slide-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.35);
}

.slide-content {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    z-index: 2;
    color: var(--hdh-white);
    width: 90%;
    max-width: 800px;
}

.slide-title {
    font-size: var(--text-4xl);
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.slide-desc {
    font-size: var(--text-lg);
    font-weight: 400;
    opacity: 0.9;
}

/* 슬라이더 도트 */
.slider-dots {
    position: absolute;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 5;
}

.slider-dots .dot {
    width: 12px; height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    border: 2px solid rgba(255,255,255,0.6);
    transition: var(--transition);
    cursor: pointer;
}

.slider-dots .dot.active {
    background: var(--hdh-white);
    border-color: var(--hdh-white);
}

/* 슬라이더 화살표 */
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 44px; height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.3);
    color: var(--hdh-white);
    font-size: 1.2rem;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}
.slider-arrow:hover { background: rgba(0,0,0,0.6); }
.slider-prev { left: 20px; }
.slider-next { right: 20px; }

/* ============================================
   섹션 공통
   ============================================ */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title-en {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--hdh-black);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.section-subtitle {
    font-size: var(--text-base);
    color: var(--hdh-gray-500);
    font-weight: 400;
}

/* ============================================
   Our Product 섹션
   ============================================ */
.section--products {
    background: var(--hdh-gray-50);
}

.product-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-showcase-card {
    display: block;
    background: var(--hdh-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.product-showcase-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.product-showcase-img {
    aspect-ratio: 4/3;
    background: var(--hdh-gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
    overflow: hidden;
}

.product-showcase-img img {
    max-height: 200px;
    object-fit: contain;
    transition: transform 0.4s ease;
}

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

.product-showcase-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    border-top: 1px solid var(--hdh-gray-100);
}

.product-showcase-info h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--hdh-black);
}

.product-showcase-arrow {
    font-size: var(--text-xl);
    color: var(--hdh-gray-400);
    transition: var(--transition);
}

.product-showcase-card:hover .product-showcase-arrow {
    color: var(--hdh-accent);
    transform: translateX(4px);
}

/* ============================================
   Our Projects 섹션
   ============================================ */
.section--projects {
    background: var(--hdh-white);
}

.project-tabs {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 40px;
}

.project-tab {
    padding: 12px 36px;
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--hdh-white);
    background: var(--hdh-gray-500);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.project-tab:first-child { border-radius: var(--radius-sm) 0 0 var(--radius-sm); }
.project-tab:last-child { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }

.project-tab.active,
.project-tab:hover {
    background: var(--hdh-accent);
}

/* 프로젝트 갤러리 */
.project-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.project-item {
    cursor: pointer;
}

.project-thumb {
    aspect-ratio: 4/3;
    overflow: hidden;
    border-radius: var(--radius-md);
    background: var(--hdh-gray-100);
}

.project-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.project-item:hover .project-thumb img {
    transform: scale(1.08);
}

.project-thumb--placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    text-align: center;
    font-size: var(--text-sm);
    color: var(--hdh-gray-500);
    background: var(--hdh-gray-200);
    aspect-ratio: 4/3;
    border-radius: var(--radius-md);
}

.project-name {
    font-size: var(--text-sm);
    color: var(--hdh-gray-700);
    margin-top: 10px;
    text-align: center;
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ============================================
   Contact 섹션
   ============================================ */
.section--contact {
    padding: 60px 0;
    background: var(--hdh-gray-50);
}

.contact-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 40px 50px;
    background: var(--hdh-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-banner-left h2 {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--hdh-black);
    margin-bottom: 4px;
}

.contact-banner-left p {
    font-size: var(--text-sm);
    color: var(--hdh-gray-500);
}

.contact-banner-right {
    display: flex;
    align-items: center;
    gap: 30px;
}

.contact-item {
    text-align: center;
}

.contact-label {
    display: block;
    font-size: var(--text-xs);
    color: var(--hdh-gray-400);
    font-weight: 600;
    margin-bottom: 2px;
}

.contact-value {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--hdh-black);
}

/* ============================================
   페이지 배너 (서브페이지 공통 헤더)
   ============================================ */
.page-banner {
    position: relative;
    height: 300px;
    margin-top: var(--header-height);
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.page-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.4);
}

.page-banner-content {
    position: relative;
    z-index: 2;
    color: var(--hdh-white);
}

.page-banner-title {
    font-size: var(--text-4xl);
    font-weight: 700;
    margin-bottom: 8px;
}

.page-banner-desc {
    font-size: var(--text-base);
    opacity: 0.85;
}

/* 브레드크럼 + 필터 바 */
.board-filter-bar {
    background: var(--hdh-white);
    border-bottom: 1px solid var(--hdh-gray-200);
    padding: 15px 0;
}

.board-filter-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--text-sm);
    color: var(--hdh-gray-500);
}

.breadcrumb a { color: var(--hdh-gray-700); }
.breadcrumb a:hover { color: var(--hdh-accent); }

/* ============================================
   갤러리형 게시판
   ============================================ */
.board-gallery-section {
    padding: 60px 0;
}

.category-filter {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.board-gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.board-gallery-item {
    display: block;
    transition: var(--transition);
}

.board-gallery-item:hover {
    transform: translateY(-4px);
}

.board-gallery-thumb {
    aspect-ratio: 1/1;
    overflow: hidden;
    border-radius: var(--radius-md);
    background: var(--hdh-gray-100);
    margin-bottom: 12px;
}

.board-gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.board-gallery-item:hover .board-gallery-thumb img {
    transform: scale(1.06);
}

.board-gallery-category {
    display: inline-block;
    font-size: var(--text-xs);
    color: var(--hdh-accent);
    font-weight: 500;
    padding: 2px 10px;
    border: 1px solid var(--hdh-accent);
    border-radius: 2px;
    margin-bottom: 6px;
}

.board-gallery-title {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--hdh-black);
    line-height: 1.4;
}

/* ============================================
   리스트형 게시판 (견적문의)
   ============================================ */
.board-list-section {
    padding: 60px 0;
}

.board-list-header {
    margin-bottom: 30px;
}

.board-list-header h3 {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--hdh-black);
    margin-bottom: 4px;
}

.board-list-header p {
    font-size: var(--text-sm);
    color: var(--hdh-gray-500);
}

.board-table {
    width: 100%;
    border-collapse: collapse;
}

.board-table thead {
    background: var(--hdh-gray-50);
    border-top: 2px solid var(--hdh-black);
}

.board-table th {
    padding: 12px 16px;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--hdh-gray-700);
    text-align: center;
    border-bottom: 1px solid var(--hdh-gray-200);
}

.board-table td {
    padding: 14px 16px;
    font-size: var(--text-sm);
    color: var(--hdh-gray-700);
    text-align: center;
    border-bottom: 1px solid var(--hdh-gray-100);
}

.board-table td.title-cell {
    text-align: left;
}

.board-table tbody tr:hover {
    background: var(--hdh-gray-50);
}

/* ============================================
   제품 상세 페이지
   ============================================ */
.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    padding: 50px 0;
}

.product-detail-image {
    background: var(--hdh-gray-50);
    border-radius: var(--radius-md);
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-detail-image img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
}

.product-detail-info h1 {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--hdh-black);
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--hdh-black);
}

.product-spec-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 30px;
}

.product-spec-table th {
    background: var(--hdh-gray-50);
    padding: 12px 20px;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--hdh-gray-700);
    text-align: left;
    width: 30%;
    border: 1px solid var(--hdh-gray-200);
}

.product-spec-table td {
    padding: 12px 20px;
    font-size: var(--text-sm);
    color: var(--hdh-gray-600);
    border: 1px solid var(--hdh-gray-200);
}

/* ============================================
   푸터
   ============================================ */
.site-footer {
    background: var(--hdh-gray-900);
    color: var(--hdh-gray-400);
    padding: 40px 0;
}

.footer-inner {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 16px;
}

.footer-logo .logo-bold {
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--hdh-white);
}

.footer-logo .logo-text {
    font-size: 1rem;
    font-weight: 400;
    color: var(--hdh-gray-400);
}

.footer-info {
    margin-bottom: 16px;
}

.footer-info p {
    font-size: var(--text-sm);
    line-height: 1.8;
    color: var(--hdh-gray-400);
}

.footer-copyright p {
    font-size: var(--text-xs);
    color: var(--hdh-gray-500);
}

.btn-family-site {
    display: inline-block;
    padding: 10px 30px;
    border: 1px solid var(--hdh-gray-600);
    color: var(--hdh-gray-400);
    font-size: var(--text-sm);
    transition: var(--transition);
}

.btn-family-site:hover {
    border-color: var(--hdh-white);
    color: var(--hdh-white);
}

/* ============================================
   맨위로 버튼
   ============================================ */
.btn-scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--hdh-gray-700);
    color: var(--hdh-white);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

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

.btn-scroll-top:hover {
    background: var(--hdh-accent);
}

/* ============================================
   문의 폼
   ============================================ */
.contact-form {
    max-width: 640px;
    margin: 0 auto;
}

.form-group { margin-bottom: var(--space-lg); }

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--hdh-gray-700);
    margin-bottom: var(--space-sm);
}

.form-label .required { color: #EF4444; }

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 12px 16px;
    font-size: var(--text-base);
    font-family: var(--font-primary);
    color: var(--hdh-gray-800);
    background: var(--hdh-white);
    border: 1px solid var(--hdh-gray-300);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    outline: none;
}

.form-input:focus,
.form-textarea:focus {
    border-color: var(--hdh-accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 140px;
}

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

/* ============================================
   인증서 갤러리
   ============================================ */
.cert-gallery-section {
    padding: 60px 0;
}

.cert-header {
    margin-bottom: 40px;
}

.cert-header h3 {
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--hdh-black);
    line-height: 1.4;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.cert-item {
    background: var(--hdh-white);
    border: 1px solid var(--hdh-gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.cert-item:hover {
    box-shadow: var(--shadow-md);
}

.cert-item-thumb {
    aspect-ratio: 3/4;
    overflow: hidden;
    background: var(--hdh-gray-50);
}

.cert-item-thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 10px;
}

.cert-item-info {
    padding: 14px 16px;
    border-top: 1px solid var(--hdh-gray-100);
}

.cert-item-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--hdh-black);
    margin-bottom: 4px;
}

.cert-item-meta {
    font-size: var(--text-xs);
    color: var(--hdh-gray-400);
    display: flex;
    gap: 12px;
}

/* ============================================
   About page - 회사소개 추가 스타일
   ============================================ */
.about-intro {
    padding: 80px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--hdh-black);
    margin-bottom: 20px;
    line-height: 1.4;
}

.about-text p {
    font-size: var(--text-base);
    color: var(--hdh-gray-600);
    line-height: 1.8;
    margin-bottom: 16px;
}

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

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-values {
    padding: 60px 0;
    background: var(--hdh-gray-50);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.value-card {
    background: var(--hdh-white);
    padding: 40px 30px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.value-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.value-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 99, 235, 0.08);
    border-radius: 50%;
    font-size: 1.8rem;
}

.value-card h3 {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--hdh-black);
    margin-bottom: 10px;
}

.value-card p {
    font-size: var(--text-sm);
    color: var(--hdh-gray-500);
    line-height: 1.7;
}

/* Contact page additional */
.contact-page-section {
    padding: 80px 0;
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.contact-info-card {
    background: var(--hdh-white);
    border: 1px solid var(--hdh-gray-200);
    border-radius: var(--radius-md);
    padding: 30px;
    text-align: center;
    transition: var(--transition);
}

.contact-info-card:hover {
    border-color: var(--hdh-accent);
    box-shadow: var(--shadow-md);
}

.contact-info-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 99, 235, 0.08);
    border-radius: 50%;
    font-size: 1.5rem;
}

.contact-info-card h4 {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--hdh-black);
    margin-bottom: 6px;
}

.contact-info-card p {
    font-size: var(--text-sm);
    color: var(--hdh-gray-500);
    line-height: 1.6;
}

.contact-form-section {
    background: var(--hdh-gray-50);
    border-radius: var(--radius-lg);
    padding: 50px;
    max-width: 700px;
    margin: 0 auto;
}

.contact-form-section h3 {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--hdh-black);
    margin-bottom: 8px;
    text-align: center;
}

.contact-form-section > p {
    font-size: var(--text-sm);
    color: var(--hdh-gray-500);
    text-align: center;
    margin-bottom: 30px;
}

/* ============================================
   Animations (from animations.css)
   ============================================ */

/* ─── 스크롤 애니메이션 ─── */
[data-animate] {
    opacity: 0;
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

[data-animate].animated {
    opacity: 1;
    transform: none !important;
}

[data-animate="fade-up"] {
    transform: translateY(40px);
}

[data-animate="fade-down"] {
    transform: translateY(-40px);
}

[data-animate="fade-left"] {
    transform: translateX(40px);
}

[data-animate="fade-right"] {
    transform: translateX(-40px);
}

[data-animate="scale-up"] {
    transform: scale(0.95);
}

[data-animate="zoom-in"] {
    transform: scale(0.9);
}

/* 딜레이 */
[data-delay="100"] { transition-delay: 100ms; }
[data-delay="200"] { transition-delay: 200ms; }
[data-delay="300"] { transition-delay: 300ms; }
[data-delay="400"] { transition-delay: 400ms; }
[data-delay="500"] { transition-delay: 500ms; }

/* ─── 스크롤 진행 바 ─── */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--hdh-accent), var(--hdh-accent-light));
    z-index: 1001;
    transform-origin: left;
    transform: scaleX(0);
    transition: transform 0.1s linear;
}

/* ============================================
   반응형
   ============================================ */

/* 태블릿 */
@media (max-width: 1024px) {
    .product-showcase {
        grid-template-columns: repeat(2, 1fr);
    }
    .project-gallery,
    .board-gallery-grid,
    .cert-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .product-detail {
        grid-template-columns: 1fr;
    }
    .contact-banner {
        flex-direction: column;
        text-align: center;
        gap: 24px;
    }
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .contact-info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 모바일 */
@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }

    .menu-toggle { display: flex; }

    .nav-primary {
        position: fixed;
        inset: 0;
        background: rgba(255, 255, 255, 0.98);
        flex-direction: column;
        justify-content: center;
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        z-index: 1000;
    }
    .nav-primary.open {
        opacity: 1;
        visibility: visible;
    }
    .nav-list {
        flex-direction: column;
        gap: 0;
    }
    .nav-list li a {
        font-size: var(--text-xl);
        font-weight: 600;
        padding: 12px 0;
        line-height: 1.5;
        color: var(--hdh-black);
    }

    .nav-actions {
        display: none;
    }

    .hero-slider { height: 350px; }
    .slide-title { font-size: var(--text-2xl); }

    .product-showcase {
        grid-template-columns: 1fr;
    }
    .project-gallery,
    .board-gallery-grid,
    .cert-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .project-tab {
        padding: 10px 20px;
        font-size: var(--text-sm);
    }
    .footer-inner {
        flex-direction: column;
        gap: 24px;
    }
    .page-banner { height: 200px; }
    .page-banner-title { font-size: var(--text-2xl); }
    .form-row { grid-template-columns: 1fr; }
    .section { padding: 50px 0; }
    .contact-banner-right { flex-direction: column; gap: 16px; }
    .values-grid { grid-template-columns: 1fr; }
    .contact-info-grid { grid-template-columns: 1fr; }
    .contact-form-section { padding: 30px 20px; }
}

/* 작은 모바일 */
@media (max-width: 480px) {
    .project-gallery,
    .board-gallery-grid,
    .cert-grid {
        grid-template-columns: 1fr;
    }
}