/* 기본 스타일 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0d47a1;
    --secondary-color: #1565c0;
    --accent-color: #ff6b35;
    --dark-color: #1a1a1a;
    --light-color: #f8f9fa;
    --text-color: #212529;
    --text-light: #6c757d;
    --white: #ffffff;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.15);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-color);
    line-height: 1.7;
    overflow-x: hidden;
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* 헤더 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.navbar {
    padding: 1.2rem 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-group {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.logo {
    display: flex;
    flex-direction: column;
}

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

.logo a:hover {
    opacity: 0.8;
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.2rem;
    letter-spacing: -0.5px;
}

.logo-solar h1 {
    color: var(--solar-primary);
}

.logo-subtitle {
    font-size: 0.85rem;
    color: var(--text-light);
    font-weight: 400;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

/* 견적 메뉴 링크 버튼 스타일 */
.nav-menu a.quote-nav-link {
    color: white;
    background: #e74c3c;
    font-weight: 700;
    padding: 0.6rem 1.5rem;
    border-radius: 25px;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
    transition: all 0.3s ease;
}

.nav-menu a.quote-nav-link:hover {
    background: #c0392b;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.4);
    color: white;
}

.nav-menu a.quote-nav-link::after {
    display: none;
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: all 0.3s ease;
}

/* 히어로 섹션 */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    background: linear-gradient(135deg, #0d47a1 0%, #1565c0 50%, #1976d2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
        linear-gradient(135deg, rgba(13, 71, 161, 0.9) 0%, rgba(21, 101, 192, 0.9) 50%, rgba(25, 118, 210, 0.9) 100%);
    opacity: 1;
    animation: heroGradient 15s ease infinite;
}

.hero::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.03) 2px,
            rgba(255, 255, 255, 0.03) 4px
        ),
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.03) 2px,
            rgba(255, 255, 255, 0.03) 4px
        );
    animation: gridMove 20s linear infinite;
    pointer-events: none;
}

@keyframes heroGradient {
    0%, 100% {
        background: 
            radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
            radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
            linear-gradient(135deg, rgba(13, 71, 161, 0.9) 0%, rgba(21, 101, 192, 0.9) 50%, rgba(25, 118, 210, 0.9) 100%);
    }
    50% {
        background: 
            radial-gradient(circle at 80% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
            radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
            linear-gradient(135deg, rgba(13, 71, 161, 0.9) 0%, rgba(21, 101, 192, 0.9) 50%, rgba(25, 118, 210, 0.9) 100%);
    }
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(100px, 100px);
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(0.5px);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    animation: fadeInUp 1s ease;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-title {
    font-size: 3.75rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    font-weight: 300;
    opacity: 0.95;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 4rem;
    font-weight: 900;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 500;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-family: 'Noto Sans KR', sans-serif;
}

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

.btn-primary:hover {
    background: #e55a2a;
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(255, 107, 53, 0.4);
}

/* 섹션 공통 스타일 */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

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

/* 회사소개 섹션 */
.about {
    background: var(--white);
}

.about-content {
    display: grid;
    gap: 3rem;
}

.about-text {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.about-text h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: var(--shadow);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h4 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 700;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* 제품소개 섹션 */
.products {
    background: var(--light-color);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.product-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.06);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    height: 250px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-placeholder {
    color: var(--white);
    font-size: 1.2rem;
    opacity: 0.7;
}

.product-info {
    padding: 2rem;
}

.product-info h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 700;
}

.product-info p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.product-specs {
    list-style: none;
    padding-top: 1.5rem;
    border-top: 2px solid var(--light-color);
}

.product-specs li {
    padding: 0.5rem 0;
    color: var(--text-color);
    font-weight: 500;
}

.product-specs li::before {
    content: '✓ ';
    color: var(--accent-color);
    font-weight: bold;
    margin-right: 0.5rem;
}

.lab-intro {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 3rem;
    padding: 3rem;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid rgba(0, 0, 0, 0.06);
}

.lab-intro h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.lab-intro p {
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.8;
}

.youtube-video {
    width: 100%;
    height: 100%;
    min-height: 250px;
    border: none;
}

.video-card .product-image {
    padding: 0;
    background: #000;
}

/* 재생 프로세스 섹션 */
.process {
    background: var(--white);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    position: relative;
}

.process-step {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius);
    position: relative;
    transition: var(--transition);
    box-shadow: var(--shadow);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-left: 4px solid var(--primary-color);
}

.process-step:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    background: var(--primary-color);
    color: var(--white);
}

.process-step:hover .step-number {
    color: var(--white);
    opacity: 0.3;
}

.step-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--primary-color);
    opacity: 0.3;
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    transition: all 0.3s ease;
}

.process-step h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 700;
    position: relative;
    z-index: 1;
}

.process-step:hover h3 {
    color: var(--white);
}

.process-step p {
    color: var(--text-light);
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

.process-step:hover p {
    color: rgba(255, 255, 255, 0.9);
}

/* 서비스 섹션 */
.services {
    background: var(--white);
}

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

.service-item {
    position: relative;
    padding: 2.5rem;
    background: var(--white);
    border-radius: var(--border-radius);
    transition: var(--transition);
    box-shadow: var(--shadow);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-left: 4px solid var(--primary-color);
}

.service-item:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateX(10px);
}

.service-item:hover .service-number {
    color: var(--white);
    opacity: 0.3;
}

.service-number {
    font-size: 4rem;
    font-weight: 900;
    color: var(--primary-color);
    opacity: 0.2;
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    transition: all 0.3s ease;
}

.service-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    position: relative;
    z-index: 1;
}

.service-item p {
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

/* 지도 섹션 */
.map-section {
    background: var(--light-color);
    padding: 5rem 0;
}

.map-wrapper {
    margin-top: 3rem;
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.map-info {
    margin-top: 2rem;
    text-align: center;
    padding: 1.5rem;
    background: var(--light-color);
    border-radius: var(--border-radius);
}

.map-info h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.map-info p {
    color: var(--text-color);
    margin: 0.5rem 0;
    font-size: 1rem;
}

.map-info a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.map-info a:hover {
    text-decoration: underline;
}

/* 연락처 섹션 */
.contact {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
}

.contact .section-header h2,
.contact .section-subtitle {
    color: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: start;
}

.contact-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.contact-details p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.contact-details a {
    color: var(--white);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.contact-details a:hover {
    opacity: 0.8;
}

.contact-form-wrapper {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.contact-note {
    text-align: center;
    padding: 3rem 2rem;
    background: linear-gradient(135deg, rgba(13, 71, 161, 0.05) 0%, rgba(21, 101, 192, 0.05) 100%);
    border-radius: var(--border-radius);
    border: 1px solid rgba(13, 71, 161, 0.1);
}

.contact-note p {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.contact-note strong {
    color: var(--primary-color);
    font-weight: 700;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-color);
}

.form-group input,
.form-group textarea {
    padding: 1rem;
    border: 2px solid var(--light-color);
    border-radius: 8px;
    font-family: 'Noto Sans KR', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
}

/* 푸터 */
.footer {
    background: var(--dark-color);
    color: var(--white);
    padding: 2.5rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--white);
}

.footer-info p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
}

.footer-contact a {
    color: var(--white);
    text-decoration: none;
}

.footer-contact a:hover {
    text-decoration: underline;
}

/* 애니메이션 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .logo-group {
        gap: 1.5rem;
    }

    .logo h1 {
        font-size: 1.5rem;
    }

    .logo-subtitle {
        font-size: 0.75rem;
    }

    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow);
        padding: 2rem 0;
        gap: 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        padding: 1rem 0;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .about-features,
    .products-grid,
    .services-content,
    .process-steps,
    .certificates-grid,
    .shop-products {
        grid-template-columns: 1fr;
    }

    .hero-stats {
        gap: 2rem;
    }

    .stat-number {
        font-size: 3rem;
    }
}

@media (max-width: 480px) {
    .logo-group {
        gap: 1rem;
    }

    .logo h1 {
        font-size: 1.25rem;
    }

    .logo-subtitle {
        font-size: 0.7rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .btn {
        padding: 0.8rem 2rem;
        font-size: 0.9rem;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .stat-label {
        font-size: 1rem;
    }
}

/* 플로팅 문의 패널 */
.floating-inquiry {
    position: fixed;
    right: 0;
    bottom: 0;
    z-index: 9999;
    font-family: 'Noto Sans KR', sans-serif;
}

.inquiry-toggle {
    position: absolute;
    right: 20px;
    bottom: 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    border: none;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
    z-index: 10001;
    font-family: 'Noto Sans KR', sans-serif;
}

.inquiry-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 48px rgba(13, 71, 161, 0.4);
}

.inquiry-toggle:active {
    transform: translateY(0);
}

.inquiry-icon {
    font-size: 1.5rem;
    animation: pulse 2s infinite;
}

.inquiry-text {
    white-space: nowrap;
}

.inquiry-panel {
    position: fixed;
    right: -400px;
    bottom: 0;
    width: 380px;
    max-height: 90vh;
    background: var(--white);
    box-shadow: var(--shadow-xl);
    border-radius: 16px 16px 0 0;
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 10000;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.inquiry-panel.active {
    right: 0;
}

.inquiry-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.inquiry-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
}

.close-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: var(--white);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

.inquiry-content {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
}

.inquiry-phone {
    text-align: center;
    padding: 1.5rem;
    background: var(--light-color);
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
}

.phone-label {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.phone-link {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.phone-link:hover {
    color: var(--secondary-color);
    transform: scale(1.05);
}

/* 선택된 상품 정보 표시 영역 */
.selected-product-info {
    background: var(--light-color);
    border: 2px solid #e74c3c;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.product-info-title {
    color: #e74c3c;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e74c3c;
}

.product-info-content {
    color: var(--text-color);
}

.product-info-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.product-info-description {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.product-info-price {
    margin-bottom: 0.75rem;
}

.product-price {
    font-size: 1.1rem;
    font-weight: 700;
    color: #e74c3c;
    margin-right: 0.5rem;
}

.product-original-price {
    font-size: 0.9rem;
    color: var(--text-light);
    text-decoration: line-through;
}

.product-info-badge {
    display: inline-block;
    background: #e74c3c;
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.product-info-specs {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.inquiry-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.inquiry-form .form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.inquiry-form label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-color);
}

.inquiry-form input,
.inquiry-form textarea {
    padding: 0.875rem;
    border: 1.5px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    font-family: 'Noto Sans KR', sans-serif;
    font-size: 0.95rem;
    transition: var(--transition);
    background: var(--white);
}

.inquiry-form input:focus,
.inquiry-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(13, 71, 161, 0.1);
}

.inquiry-form textarea {
    resize: vertical;
    min-height: 100px;
}

.btn-block {
    width: 100%;
    padding: 1rem;
    border-radius: 8px;
    font-weight: 600;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* 인증서 섹션 */
.certificates {
    background: var(--light-color);
    padding: 5rem 0;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.certificate-item {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.06);
    cursor: pointer;
}

.certificate-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.certificate-image {
    width: 100%;
    height: 300px;
    background: var(--light-color);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

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

.certificate-item:hover .certificate-image img {
    transform: scale(1.05);
}

.certificate-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    font-size: 1.1rem;
    opacity: 0.8;
}

.certificate-info {
    padding: 1.5rem;
    text-align: center;
}

.certificate-info h3 {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.certificate-info p {
    font-size: 0.95rem;
    color: var(--text-light);
}

.certificate-note {
    text-align: center;
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 0, 0, 0.06);
}

.certificate-note p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.certificate-note a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.certificate-note a:hover {
    text-decoration: underline;
}

/* 견적 섹션 */
.shop {
    background: var(--white);
    padding: 5rem 0;
}

.shop-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
    padding: 2rem;
}

.shop-intro p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.quote-button {
    display: inline-block;
    background: #e74c3c;
    color: white;
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 50px;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.4);
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.quote-button:hover {
    background: #c0392b;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.5);
}

.quote-button:active {
    transform: translateY(0);
}

.shop-products {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.shop-product-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.06);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.shop-product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.shop-product-image {
    width: 100%;
    height: 250px;
    background: var(--light-color);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

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

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

.shop-product-info {
    padding: 1.5rem;
}

.shop-product-description {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.shop-product-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--light-color);
}

.spec-item {
    font-size: 0.85rem;
    color: var(--text-light);
    background: var(--light-color);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
}

.shop-product-title {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 0.75rem;
    font-weight: 600;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.shop-product-price {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.shop-product-price .original {
    font-size: 1rem;
    color: var(--text-light);
    text-decoration: line-through;
    margin-left: 0.5rem;
    font-weight: 400;
}

.shop-product-badge {
    display: inline-block;
    background: var(--accent-color);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 0.5rem;
}

.loading-spinner {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
}

.spinner {
    border: 4px solid var(--light-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-spinner p {
    color: var(--text-light);
    font-size: 1rem;
}

.shop-error {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    background: var(--light-color);
    border-radius: var(--border-radius);
}

.shop-error p {
    color: var(--text-light);
    margin-bottom: 1rem;
}


/* 모바일 반응형 - 플로팅 문의 */
@media (max-width: 768px) {
    .inquiry-panel {
        width: 100%;
        right: -100%;
        border-radius: 0;
        max-height: 85vh;
    }

    .inquiry-toggle {
        right: 15px;
        bottom: 15px;
        padding: 0.875rem 1.25rem;
        font-size: 0.9rem;
    }

    .inquiry-text {
        display: none;
    }

    .inquiry-icon {
        font-size: 1.25rem;
    }
}

/* ========================================
   비트파워 솔라 전용 스타일
   ======================================== */

:root {
    --solar-primary: #2e7d32;
    --solar-secondary: #4caf50;
    --solar-accent: #66bb6a;
    --solar-dark: #1b5e20;
    --solar-light: #e8f5e9;
}

/* Solar Hero 섹션 */
.solar-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
    background: linear-gradient(135deg, #1b5e20 0%, #2e7d32 50%, #4caf50 100%);
}

.solar-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* 배경 이미지 placeholder - 실제 이미지 URL은 여기에 추가 */
    /* background-image: url('img/solar-hero-bg.jpg'); */
    background-size: cover;
    background-position: center;
    opacity: 0.2;
    z-index: 1;
}

.solar-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(27, 94, 32, 0.85) 0%, rgba(46, 125, 50, 0.85) 50%, rgba(76, 175, 80, 0.85) 100%);
    z-index: 2;
}

.solar-hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: var(--white);
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.solar-hero-title {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    letter-spacing: -1px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.solar-hero-subtitle {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    line-height: 1.5;
    color: #fff;
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.2);
}

.solar-hero-description {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    line-height: 1.8;
    opacity: 0.95;
    font-weight: 400;
}

.solar-hero-bullets {
    list-style: none;
    text-align: left;
    max-width: 700px;
    margin: 0 auto 3rem;
    padding: 0;
}

.solar-hero-bullets li {
    font-size: 1.1rem;
    padding: 1rem 0;
    padding-left: 2.5rem;
    position: relative;
    line-height: 1.6;
}

.solar-hero-bullets li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--solar-accent);
    font-size: 1.5rem;
    font-weight: bold;
}

.solar-hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    border: 2px solid var(--white);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--solar-primary);
    transform: translateY(-2px);
}

/* Solar 핵심 가치 제안 섹션 */
.solar-values {
    background: var(--white);
    padding: 5rem 0;
}

.solar-values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.solar-value-card {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: var(--shadow);
}

.solar-value-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--solar-primary);
}

.solar-value-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--solar-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    transition: var(--transition);
}

.solar-value-card:hover .solar-value-icon {
    background: var(--solar-primary);
    transform: scale(1.1);
}

.solar-value-card h3 {
    font-size: 1.5rem;
    color: var(--solar-primary);
    margin-bottom: 1rem;
    font-weight: 700;
}

.solar-value-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Solar 패키지 섹션 */
.solar-packages {
    background: var(--light-color);
    padding: 5rem 0;
}

.solar-packages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.solar-package-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-top: 4px solid var(--solar-primary);
    transition: var(--transition);
}

.solar-package-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.solar-package-card h3 {
    font-size: 1.8rem;
    color: var(--solar-primary);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.package-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.package-info p {
    color: var(--text-color);
    line-height: 1.7;
}

.package-info strong {
    color: var(--solar-primary);
    font-weight: 600;
}

.package-note {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--light-color);
    font-size: 0.9rem;
    color: var(--text-light);
    font-style: italic;
}

/* Solar 타겟 고객 섹션 */
.solar-targets {
    background: var(--white);
    padding: 5rem 0;
}

.solar-targets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.solar-target-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-left: 4px solid var(--solar-secondary);
    transition: var(--transition);
}

.solar-target-card:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
    border-left-color: var(--solar-primary);
}

.solar-target-card h3 {
    font-size: 1.5rem;
    color: var(--solar-primary);
    margin-bottom: 1rem;
    font-weight: 700;
}

.solar-target-card p {
    color: var(--text-color);
    line-height: 1.8;
}

.solar-target-card strong {
    color: var(--solar-primary);
    font-weight: 600;
}

/* Solar 기술 섹션 */
.solar-technology {
    background: var(--light-color);
    padding: 5rem 0;
}

.solar-tech-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.solar-tech-item {
    display: flex;
    gap: 2rem;
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: var(--transition);
}

.solar-tech-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.tech-icon {
    font-size: 3rem;
    flex-shrink: 0;
}

.tech-content h3 {
    font-size: 1.5rem;
    color: var(--solar-primary);
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.tech-content p {
    color: var(--text-color);
    line-height: 1.7;
}

.tech-link {
    color: var(--solar-primary);
    text-decoration: none;
    font-weight: 600;
}

.tech-link:hover {
    text-decoration: underline;
}

.solar-tech-note {
    margin-top: 3rem;
    padding: 2rem;
    background: var(--white);
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 0, 0, 0.06);
    text-align: center;
}

.solar-tech-note p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Solar 문의 섹션 */
.solar-inquiry {
    background: linear-gradient(135deg, var(--solar-primary) 0%, var(--solar-secondary) 100%);
    color: var(--white);
    padding: 5rem 0;
}

.solar-inquiry .section-header h2,
.solar-inquiry .section-subtitle {
    color: var(--white);
}

.solar-inquiry-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 3rem;
    align-items: start;
}

.solar-inquiry-form-wrapper {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.solar-inquiry-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.solar-inquiry-form .form-group label {
    color: var(--text-color);
    font-weight: 600;
}

.solar-inquiry-form select {
    padding: 1rem;
    border: 2px solid var(--light-color);
    border-radius: 8px;
    font-family: 'Noto Sans KR', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: var(--white);
}

.solar-inquiry-form select:focus {
    outline: none;
    border-color: var(--solar-primary);
}

.solar-inquiry-contact {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.solar-inquiry-contact h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--white);
}

.solar-contact-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    align-items: start;
}

.solar-contact-item .contact-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.solar-contact-item .contact-details {
    color: var(--white);
}

.solar-contact-item .contact-details p {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.contact-note {
    font-size: 0.9rem;
    opacity: 0.8;
    font-style: italic;
}

/* Solar FAQ 섹션 */
.solar-faq {
    background: var(--white);
    padding: 5rem 0;
}

.solar-faq-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.solar-faq-item {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-left: 4px solid var(--solar-primary);
    transition: var(--transition);
}

.solar-faq-item:hover {
    box-shadow: var(--shadow-lg);
}

.solar-faq-item h3 {
    font-size: 1.3rem;
    color: var(--solar-primary);
    margin-bottom: 1rem;
    font-weight: 700;
}

.solar-faq-item p {
    color: var(--text-color);
    line-height: 1.8;
}

/* Solar 반응형 디자인 */
@media (max-width: 768px) {
    .solar-hero-title {
        font-size: 2.5rem;
    }

    .solar-hero-subtitle {
        font-size: 1.2rem;
    }

    .solar-hero-description {
        font-size: 1rem;
    }

    .solar-hero-bullets {
        text-align: center;
    }

    .solar-hero-bullets li {
        padding-left: 0;
        padding-top: 0.5rem;
    }

    .solar-hero-bullets li::before {
        display: none;
    }

    .solar-hero-cta {
        flex-direction: column;
    }

    .solar-hero-cta .btn {
        width: 100%;
    }

    .solar-values-grid,
    .solar-packages-grid,
    .solar-targets-grid {
        grid-template-columns: 1fr;
    }

    .solar-inquiry-content {
        grid-template-columns: 1fr;
    }

    .solar-tech-item {
        flex-direction: column;
        text-align: center;
    }

    .tech-icon {
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    .solar-hero-title {
        font-size: 2rem;
    }

    .solar-hero-subtitle {
        font-size: 1rem;
    }

    .solar-hero-content {
        padding: 2rem 1rem;
    }
}