/* ===================================
   Softrong Website - Main Styles
   =================================== */

/* CSS Variables */
:root[data-theme="light"] {
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8F9FA;
    --bg-tertiary: #F1F3F5;
    --text-primary: #212529;
    --text-secondary: #495057;
    --text-tertiary: #868E96;
    --brand-blue: #0047AB;
    --brand-cyan: #00B8D4;
    --brand-green: #00E676;
    --gradient-primary: linear-gradient(135deg, #0047AB 0%, #00B8D4 100%);
    --gradient-hero: linear-gradient(180deg, #FFFFFF 0%, #F8F9FA 100%);
    --card-bg: #FFFFFF;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --border-color: #DEE2E6;
    --btn-primary-bg: #0047AB;
    --btn-primary-hover: #003580;
    --btn-text: #FFFFFF;
    --naver-green: #03C75A;
}

:root[data-theme="dark"] {
    --bg-primary: #0A1929;
    --bg-secondary: #132F4C;
    --bg-tertiary: #1E3A5F;
    --text-primary: #FFFFFF;
    --text-secondary: #B2BAC2;
    --text-tertiary: #6E7781;
    --brand-blue: #3399FF;
    --brand-cyan: #00E5FF;
    --brand-green: #00FFA3;
    --gradient-primary: linear-gradient(135deg, #3399FF 0%, #00E5FF 100%);
    --gradient-hero: linear-gradient(180deg, #0A1929 0%, #132F4C 100%);
    --card-bg: #132F4C;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    --border-color: #1E3A5F;
    --btn-primary-bg: #3399FF;
    --btn-primary-hover: #5AADFF;
    --btn-text: #FFFFFF;
    --naver-green: #03C75A;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans KR', 'Montserrat', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-align: center;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 71, 171, 0.3);
}

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

.btn-secondary:hover {
    background: var(--brand-blue);
    color: var(--btn-text);
}

.btn-small {
    padding: 8px 20px;
    font-size: 14px;
}

/* Store Button (Naver Green) */
.btn-store {
    background: var(--naver-green) !important;
    color: white !important;
    padding: 15px 40px;
    font-size: 18px;
    font-weight: 700;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.btn-store:hover {
    background: #02B351 !important;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(3, 199, 90, 0.4);
}

.btn-store i {
    font-size: 20px;
}

/* Page Loader */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s ease;
}

.page-loader.loaded {
    opacity: 0;
    pointer-events: none;
}

.water-loader {
    width: 100px;
    height: 100px;
    border: 3px solid var(--brand-cyan);
    border-radius: 50%;
    position: relative;
    overflow: hidden;
}

.water-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200%;
    height: 100%;
    background: var(--brand-cyan);
    border-radius: 40%;
    animation: waterRise 3s ease-out forwards, waterWave 1.5s ease-in-out infinite;
}

@keyframes waterRise {
    from { bottom: -100%; }
    to { bottom: 0; }
}

@keyframes waterWave {
    0%, 100% { transform: translateX(-25%) rotate(0deg); }
    50% { transform: translateX(-25%) rotate(180deg); }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-primary);
    box-shadow: var(--card-shadow);
    z-index: 1000;
    transition: all 0.3s ease;
}

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

.logo-text {
    font-size: 24px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-image {
    height: 40px;
    width: auto;
    display: block;
    transition: opacity 0.3s ease;
}

.logo-image:hover {
    opacity: 0.8;
}

.nav-menu ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: var(--brand-cyan);
}

/* Submenu Styles */
.nav-menu .has-submenu {
    position: relative;
}

.nav-menu .has-submenu > a {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.submenu-icon {
    font-size: 12px;
    transition: transform 0.3s ease;
}

.nav-menu .has-submenu:hover .submenu-icon {
    transform: rotate(180deg);
}

.submenu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    min-width: 200px;
    padding: 10px 0;
    margin-top: 10px;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.nav-menu .has-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    margin-top: 15px;
}

.submenu li {
    padding: 0;
}

.submenu a {
    display: block;
    padding: 12px 20px;
    color: var(--text-primary);
    font-weight: 500;
    transition: all 0.3s ease;
}

.submenu a:hover {
    background: var(--brand-cyan);
    color: white;
}

/* Store Menu Highlight */
.store-menu {
    color: var(--naver-green) !important;
    font-weight: 700 !important;
    position: relative;
}

.store-menu::after {
    content: 'NEW';
    position: absolute;
    top: -8px;
    right: -20px;
    background: var(--naver-green);
    color: white;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 700;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.theme-toggle-btn {
    background: transparent;
    border: none;
    font-size: 20px;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.theme-toggle-btn:hover {
    background: var(--bg-secondary);
}

.language-selector {
    position: relative;
}

.lang-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    padding: 8px 15px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.lang-btn:hover {
    background: var(--bg-secondary);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    padding: 10px;
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: block;
    width: 100%;
    padding: 10px;
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    border-radius: 6px;
    color: var(--text-primary);
    transition: background 0.3s ease;
}

.lang-option:hover {
    background: var(--bg-secondary);
}

.lang-option.active {
    background: var(--brand-cyan);
    color: white;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
    background: var(--gradient-hero);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-title {
    font-size: 48px;
    margin-bottom: 20px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.hero-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

.keyword {
    padding: 8px 16px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--brand-blue);
}

.hero-cta {
    display: flex;
    gap: 15px;
}

.hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image-wrapper {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 20px 60px rgba(0, 71, 171, 0.3);
}

.hero-icon {
    font-size: 120px;
    color: white;
}

/* Section Styles */
.section {
    padding: 80px 0;
    opacity: 0;
    transform: translateY(80px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.section.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* Product Sections */
.products-section {
    background: var(--bg-primary);
}

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

.section-title {
    font-size: 36px;
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
}

/* Company Section */
.company-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.stat-card {
    text-align: center;
    padding: 30px;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-10px);
}

.stat-icon {
    font-size: 48px;
    color: var(--brand-cyan);
    margin-bottom: 15px;
}

.stat-number {
    font-size: 42px;
    font-weight: 700;
    color: var(--brand-blue);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
    color: var(--text-secondary);
}

/* Company Content Sections */
.company-mission {
    animation: fadeInUp 0.8s ease;
}

.timeline-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.timeline-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 102, 204, 0.15) !important;
}

.achievement-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.achievement-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

.achievement-card i {
    transition: transform 0.3s ease;
}

.achievement-card:hover i {
    transform: scale(1.1) rotate(5deg);
}

/* IP & Awards Cards */
.stat-box:hover {
    transform: translateY(-3px);
}

.ip-card,
.awards-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.ip-card:hover,
.awards-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.25);
}

/* Technology Detail Section */
.technology-main-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 102, 204, 0.2);
}

.pressure-compare-section,
.key-features-section {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pressure-compare-section:hover,
.key-features-section:hover {
    transform: translateY(-5px);
}

.damper-mechanism-section img {
    transition: transform 0.3s ease;
}

.damper-mechanism-section img:hover {
    transform: scale(1.05);
}

/* PPT Slide Section */
.ppt-slide-section {
    padding: 60px 0;
}

.ppt-slide-container {
    margin-top: 40px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.ppt-slide-image {
    text-align: center;
}

.ppt-slide-image img {
    width: 100%;
    max-width: 1200px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.ppt-slide-image img:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

.ppt-caption {
    margin-top: 20px;
    font-size: 16px;
    color: var(--text-secondary);
    font-style: italic;
}

/* Tech Detail Section (기존 유지) */
.tech-detail-section {
    padding: 80px 0;
}

.tech-detail-content {
    margin-top: 50px;
}

.tech-principle h3,
.tech-benefits h3,
.system-features h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 30px;
    color: var(--brand-blue);
}

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

.principle-item {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s ease;
}

.principle-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.principle-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #0066CC, #00B8D4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.principle-icon i {
    font-size: 32px;
    color: white;
}

.principle-item h4 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--brand-blue);
}

.principle-item p {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.principle-result {
    font-weight: 600;
    color: var(--brand-cyan) !important;
    margin-top: 10px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.benefit-card {
    background: white;
    padding: 30px 20px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s ease;
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 184, 212, 0.15);
}

.benefit-card i {
    font-size: 40px;
    color: var(--brand-cyan);
    margin-bottom: 15px;
}

.benefit-card h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--brand-blue);
}

.benefit-card p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Constant Flow System Section */
.constant-flow-section {
    padding: 80px 0;
}

.flow-system-content {
    margin-top: 50px;
}

.problem-solution {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.problem-box,
.solution-box {
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.problem-box {
    background: linear-gradient(135deg, #FFF3F3, #FFEDED);
    border-left: 5px solid #DC3545;
}

.solution-box {
    background: linear-gradient(135deg, #F0F9FF, #E6F7FF);
    border-left: 5px solid #28A745;
}

.problem-box h3,
.solution-box h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.problem-box h3 {
    color: #DC3545;
}

.solution-box h3 {
    color: #28A745;
}

.problem-box ul,
.solution-box ul {
    list-style: none;
    padding: 0;
}

.problem-box li,
.solution-box li {
    padding: 12px 0;
    padding-left: 30px;
    position: relative;
    font-size: 16px;
    line-height: 1.6;
}

.problem-box li:before {
    content: "✗";
    position: absolute;
    left: 0;
    color: #DC3545;
    font-weight: bold;
}

.solution-box li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28A745;
    font-weight: bold;
}

.features-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.timeline-item {
    background: linear-gradient(135deg, #F8F9FA, #E9ECEF);
    padding: 30px 20px;
    border-radius: 12px;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
}

.timeline-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.timeline-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #0066CC, #00B8D4);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    margin: 0 auto 15px;
}

.timeline-item h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--brand-blue);
}

.timeline-item p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Product Grid */
.product-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 10px 25px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 25px;
    cursor: pointer;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.filter-btn.active {
    background: var(--brand-blue);
    color: white;
    border-color: var(--brand-blue);
}

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

.product-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--card-shadow);
    transition: all 0.4s ease;
    text-align: center;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 184, 212, 0.2);
}

.product-image {
    width: 100%;
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    overflow: hidden;
    border-radius: 8px;
    background: var(--bg-secondary);
    position: relative;
}

.product-image .product-icon {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    padding: 8px;
}

.product-image .product-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transform: none !important;
}

.product-card:hover .product-icon {
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.4s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-image i {
    font-size: 80px;
    color: var(--brand-cyan);
}

/* 좌식 샤워기 헤드 특별 스타일 */
.product-card[data-category="shower"]:nth-child(2) .product-image img {
    transform: scale(1.1) rotate(-45deg);
    object-fit: contain;
}

.product-card[data-category="shower"]:nth-child(2):hover .product-image img {
    transform: scale(1.2) rotate(-45deg);
}

/* 주방 자바라 헤드 특별 스타일 */
.product-card[data-category="kitchen"]:nth-child(4) .product-image img {
    transform: rotate(-50deg);
    object-fit: contain;
}

.product-card[data-category="kitchen"]:nth-child(4):hover .product-image img {
    transform: scale(1.1) rotate(-50deg);
}

.product-name {
    font-size: 20px;
    margin-bottom: 10px;
}

.product-price {
    font-size: 24px;
    font-weight: 700;
    color: var(--brand-blue);
    margin: 15px 0;
}

/* WASCO Section Styles */
.wasco-section {
    background: linear-gradient(180deg, #F0F9FF 0%, #FFFFFF 50%, #F0F9FF 100%);
    padding: 0;
}

[data-theme="dark"] .wasco-section {
    background: linear-gradient(180deg, #0A1929 0%, #132F4C 50%, #0A1929 100%);
}

/* Hero Banner */
.wasco-hero-banner {
    background: linear-gradient(135deg, #0047AB 0%, #00B8D4 100%);
    padding: 80px 0;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.wasco-hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></svg>');
    opacity: 0.5;
}

.wasco-hero-content {
    position: relative;
    z-index: 1;
}

.wasco-title {
    font-size: 52px;
    font-weight: 800;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.wasco-desc {
    font-size: 22px;
    opacity: 0.95;
    margin-bottom: 30px;
    line-height: 1.6;
}

.wasco-badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 12px 30px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
}

.wasco-badge i {
    font-size: 20px;
}

/* Calculator Section */
.calculator-section {
    background: var(--bg-primary);
    border-radius: 20px;
    padding: 50px;
    box-shadow: 0 10px 50px rgba(0, 71, 171, 0.1);
    margin: 60px auto 80px;
    max-width: 900px;
}

[data-theme="dark"] .calculator-section {
    background: #132F4C;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.3);
}

.calculator-header {
    text-align: center;
    margin-bottom: 40px;
}

.calculator-header h3 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.calculator-header p {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

.calculator-form {
    max-width: 700px;
    margin: 0 auto;
}

.input-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 30px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.input-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.input-wrapper {
    position: relative;
}

.input-wrapper input,
.input-group select {
    width: 100%;
    padding: 14px 18px;
    padding-right: 50px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
    outline: none;
    transition: all 0.3s ease;
}

.input-group select {
    padding-right: 18px;
    cursor: pointer;
}

.input-wrapper input:focus,
.input-group select:focus {
    border-color: #00B8D4;
    box-shadow: 0 0 0 4px rgba(0, 184, 212, 0.1);
}

.input-wrapper .unit {
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}

.btn-calculate {
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, #0047AB 0%, #00B8D4 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-calculate:hover {
    background: linear-gradient(135deg, #003d99 0%, #0097A7 100%);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 71, 171, 0.3);
}

/* Results Section */
.calculator-results {
    margin-top: 50px;
    padding-top: 40px;
    border-top: 2px dashed var(--border-color);
}

.results-header {
    text-align: center;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.results-header i {
    font-size: 28px;
    color: #00B8D4;
}

.results-header h4 {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.result-card {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 30px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

[data-theme="dark"] .result-card {
    background: #1E3A5F;
}

.result-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 71, 171, 0.2);
    border-color: #00B8D4;
}

.result-card.primary {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, #0047AB 0%, #00B8D4 100%);
    color: white;
    border: none;
}

.result-card.primary .result-icon,
.result-card.primary .result-label,
.result-card.primary .result-value,
.result-card.primary .unit {
    color: white;
}

.result-card.primary:hover {
    border-color: transparent;
}

.result-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 184, 212, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
}

.result-card.primary .result-icon {
    background: rgba(255, 255, 255, 0.2);
}

.result-icon i {
    font-size: 24px;
    color: #00B8D4;
}

.result-card.primary .result-icon i {
    color: white;
}

.result-content .result-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 10px;
}

.result-content .result-value {
    font-size: 40px;
    font-weight: 800;
    color: var(--text-primary);
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.result-card.primary .result-content .result-value {
    font-size: 48px;
}

.result-value .unit {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-secondary);
}

.result-note {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 20px;
    background: #FFF3E0;
    border-radius: 12px;
    border-left: 4px solid #FF9800;
}

[data-theme="dark"] .result-note {
    background: rgba(255, 152, 0, 0.1);
}

.result-note i {
    font-size: 18px;
    color: #FF9800;
    margin-top: 2px;
}

.result-note p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 0;
}

/* Info Cards Section */
.info-section {
    padding: 80px 0;
}

.info-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.info-card {
    background: var(--bg-primary);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

[data-theme="dark"] .info-card {
    background: #132F4C;
}

.info-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 50px rgba(0, 71, 171, 0.15);
}

.info-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: linear-gradient(135deg, #0047AB 0%, #00B8D4 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-icon i {
    font-size: 36px;
    color: white;
}

.info-card h4 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 18px;
}

.info-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Features Section */
.features-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

[data-theme="dark"] .features-section {
    background: #0A1929;
}

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

.features-header h3 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-item {
    background: var(--bg-primary);
    border-radius: 20px;
    padding: 40px;
    border-left: 4px solid #00B8D4;
    transition: all 0.3s ease;
}

[data-theme="dark"] .feature-item {
    background: #132F4C;
}

.feature-item:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 40px rgba(0, 184, 212, 0.2);
    border-left-color: #0047AB;
}

.feature-number {
    display: inline-block;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #0047AB 0%, #00B8D4 100%);
    color: white;
    border-radius: 50%;
    font-size: 20px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-item h4 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.feature-item p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
}



/* Store Section Styles */
.store-section {
    background: linear-gradient(135deg, #F0F9FF 0%, #F8F9FA 100%);
    padding: 100px 0;
}

[data-theme="dark"] .store-section {
    background: linear-gradient(135deg, #0A1929 0%, #132F4C 100%);
}

.store-intro {
    text-align: center;
    margin-bottom: 60px;
}

.store-icon {
    font-size: 80px;
    color: var(--naver-green);
    margin-bottom: 20px;
}

.store-intro h3 {
    font-size: 32px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.store-intro p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

.store-features {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.feature-card {
    text-align: center;
    padding: 30px 20px;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(3, 199, 90, 0.15);
}

.feature-card i {
    font-size: 40px;
    color: var(--naver-green);
    margin-bottom: 15px;
}

.feature-card h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
}

.popular-products {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    margin-bottom: 50px;
}

.popular-products h3 {
    font-size: 24px;
    margin-bottom: 25px;
    text-align: center;
    color: var(--text-primary);
}

.popular-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.popular-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px 20px;
    background: var(--bg-secondary);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.popular-item:hover {
    background: var(--brand-cyan);
    color: white;
    transform: translateX(5px);
}

.popular-item i {
    color: #FFB400;
    font-size: 18px;
}

.popular-item span {
    font-size: 16px;
    font-weight: 500;
}

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

.store-link {
    margin-top: 20px;
    font-size: 14px;
    color: var(--text-tertiary);
}

.store-link i {
    margin-right: 8px;
}

.store-link a {
    color: var(--brand-cyan);
    text-decoration: underline;
}

.store-link a:hover {
    color: var(--naver-green);
}

/* Contact Section */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
}

.contact-info {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    height: fit-content;
}

.info-item {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
}

.info-item i {
    font-size: 24px;
    color: var(--brand-cyan);
}

.quote-form {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--brand-cyan);
    box-shadow: 0 0 0 3px rgba(0, 184, 212, 0.1);
}

/* Checkbox Group Styles */
.checkbox-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px 20px;
    margin-top: 12px;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 400;
    cursor: pointer;
    margin-bottom: 0;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--brand-cyan);
}

.checkbox-group span {
    user-select: none;
}

.form-actions {
    display: flex;
    gap: 15px;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a:hover {
    color: var(--brand-cyan);
}

.cert-badge {
    display: inline-block;
    padding: 6px 12px;
    background: var(--brand-cyan);
    color: white;
    border-radius: 4px;
    font-size: 12px;
    margin-right: 8px;
    margin-top: 8px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--text-tertiary);
}

/* FAB Buttons */
.fab-container {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
}

.fab-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
}

.fab-btn:hover {
    transform: scale(1.1);
}

/* Reviews Section */
.reviews-section {
    padding: 80px 0;
}

.review-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 50px;
    text-align: center;
}

.review-stat {
    padding: 25px;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
}

.stat-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--brand-blue);
    display: block;
    margin-bottom: 10px;
}

.review-stat .star-rating {
    margin: 10px 0;
}

.review-stat p {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 0;
}

.review-carousel {
    position: relative;
    max-width: 900px;
    margin: 0 auto 40px;
    min-height: 280px;
}

.review-card {
    display: none;
    background: var(--card-bg);
    padding: 35px;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.review-card.active {
    display: block;
    opacity: 1;
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.reviewer-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.reviewer-info i {
    font-size: 48px;
    color: var(--brand-cyan);
}

.reviewer-info h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.review-text {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.review-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.review-project {
    font-size: 14px;
    color: var(--text-tertiary);
}

.carousel-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-top: 30px;
}

.carousel-btn {
    background: var(--brand-blue);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.carousel-btn:hover {
    background: var(--btn-primary-hover);
    transform: scale(1.1);
}

.carousel-dots {
    display: flex;
    gap: 8px;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-dot.active {
    background: var(--brand-blue);
    width: 30px;
    border-radius: 5px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    .company-stats,
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .store-features {
        grid-template-columns: 1fr;
    }
    
    .popular-list {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    /* Timeline Toggle Button - Mobile */
    #toggleTimelineBtn {
        padding: 12px 25px !important;
        font-size: 16px !important;
    }
    
    /* Portfolio Toggle Buttons - Mobile */
    #toggleDomesticBtn,
    #toggleOverseasBtn {
        padding: 10px 20px !important;
        font-size: 15px !important;
        margin-right: 0 !important;
        margin-bottom: 10px !important;
        width: 100% !important;
    }
    
    /* Reviews Section - Mobile */
    .review-stats {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .review-card {
        padding: 25px;
    }
    
    .reviewer-info {
        flex-direction: column;
        text-align: center;
    }
    
    .review-footer {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}