/* 초기화 및 공통 스타일 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

ul {
    list-style: none;
}

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

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 40px;
    color: #1a5a37;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: #4CAF50;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: #4CAF50;
    color: white;
    border-radius: 4px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #3d8b40;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    background-color: #2962ff;
    margin-left: 15px;
}

.btn-secondary:hover {
    background-color: #1546c3;
}

/* 헤더 스타일 */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo h1 {
    font-size: 2rem;
    color: #1a5a37;
    margin: 0;
}

.logo p {
    font-size: 0.9rem;
    color: #666;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 25px;
}

nav ul li a {
    font-weight: 500;
    position: relative;
    padding-bottom: 5px;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: #4CAF50;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #4CAF50;
    transition: width 0.3s;
}

nav ul li a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 25px;
    position: relative;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: #1a5a37;
    margin: 5px 0;
    transition: 0.3s;
}

/* 메인 비주얼 스타일 */
.main-visual {
    height: 600px;
    background-image: url('https://images.unsplash.com/photo-1508514177221-188b1cf16e9d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1500&q=80');
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    text-align: center;
    color: white;
}

.main-visual .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.main-visual .container {
    position: relative;
    z-index: 2;
}

.main-buttons {
    margin-top: 30px;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}

.main-visual h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.main-visual p {
    font-size: 1.5rem;
    margin-bottom: 30px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* 소개 섹션 스타일 */
.intro {
    padding: 80px 0;
    background-color: white;
}

.intro-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.intro-text {
    flex: 1;
    min-width: 300px;
}

.intro-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.benefits li {
    margin-bottom: 10px;
    padding-left: 30px;
    position: relative;
}

.benefits li i {
    position: absolute;
    left: 0;
    top: 3px;
    color: #4CAF50;
}

.intro-stats {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    align-items: center;
    min-width: 300px;
}

.stat {
    text-align: center;
    padding: 20px;
}

.stat .number {
    font-size: 3rem;
    font-weight: 700;
    color: #1a5a37;
    display: block;
}

.stat .label {
    font-size: 1rem;
    color: #666;
}

/* 비즈니스 섹션 스타일 */
.business-section {
    padding: 80px 0;
}

.business-section:nth-child(odd) {
    background-color: #f2f7f2;
}

.business-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    align-items: center;
}

.business-image {
    flex: 1;
    min-width: 300px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.business-details {
    flex: 1;
    min-width: 300px;
}

.business-details h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #1a5a37;
}

.business-details p {
    margin-bottom: 30px;
}

.feature-list {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.feature {
    flex: 1;
    min-width: 200px;
    padding: 20px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform 0.3s;
}

.feature:hover {
    transform: translateY(-5px);
}

.feature i {
    font-size: 2rem;
    color: #4CAF50;
    margin-bottom: 15px;
}

.feature h4 {
    margin-bottom: 10px;
    color: #1a5a37;
}

.business-content.reverse {
    flex-direction: row-reverse;
}

/* 태양광 추가 정보 스타일 */
.solar-additional-info {
    margin-top: 50px;
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
}

.solar-type {
    flex: 1;
    min-width: 300px;
    background-color: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.solar-type h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #1a5a37;
}

.solar-type p {
    font-size: 1.1rem;
    line-height: 1.7;
}

/* 시공사례 섹션 스타일 */
.gallery-section {
    padding: 80px 0;
    background-color: #fff;
}

.gallery-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.gallery-item {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.gallery-item:hover {
    transform: translateY(-5px);
}

.gallery-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.gallery-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

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

.gallery-caption {
    padding: 15px;
    text-align: center;
    font-weight: 500;
    color: #1a5a37;
}

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

/* 진행절차 섹션 스타일 */
.process-section {
    padding: 80px 0;
    background-color: white;
}

.process-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 35px;
    width: 4px;
    height: 100%;
    background-color: #4CAF50;
}

.process-step {
    display: flex;
    margin-bottom: 40px;
    position: relative;
}

.process-step:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 70px;
    height: 70px;
    background-color: #4CAF50;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    z-index: 2;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.step-content {
    padding-left: 30px;
    flex: 1;
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: #1a5a37;
}

/* 상담문의 섹션 스타일 */
.contact-section {
    padding: 80px 0;
    background-color: #f2f7f2;
}

.contact-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #1a5a37;
}

.contact-info ul {
    margin-bottom: 30px;
}

.contact-info ul li {
    margin-bottom: 15px;
    padding-left: 30px;
    position: relative;
}

.contact-info ul li i {
    position: absolute;
    left: 0;
    top: 3px;
    color: #4CAF50;
}

.business-hours {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
}

.business-hours h4 {
    margin-bottom: 10px;
    color: #1a5a37;
}

.contact-form {
    flex: 1;
    min-width: 300px;
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: #4CAF50;
    outline: none;
}

.agree-check {
    display: flex;
    align-items: center;
}

.agree-check input {
    width: auto;
    margin-right: 10px;
}

.agree-check label {
    margin: 0;
}

.submit-btn {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
}

/* 푸터 스타일 */
footer {
    background-color: #1a5a37;
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 30px;
}

.footer-logo {
    flex: 1;
    min-width: 200px;
}

.footer-logo h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.footer-links {
    flex: 1;
    min-width: 200px;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

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

.footer-links ul li a:hover {
    text-decoration: underline;
}

.footer-contact {
    flex: 1;
    min-width: 200px;
}

.footer-contact p {
    margin-bottom: 10px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.9rem;
}

.footer-bottom p {
    margin-bottom: 8px;
}

/* LED 전광판 섹션 스타일 */
.led-section {
    background-color: #f8f9fa;
    color: #333;
    padding: 80px 0;
}

.led-section .section-title {
    color: #1a5a37;
}

.led-section .section-title::after {
    background-color: #4CAF50;
}

.led-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
}

.led-intro p {
    font-size: 1.2rem;
    line-height: 1.8;
    color: #555;
}

/* LED 카드 그리드 스타일 */
.led-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.led-card {
    background-color: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-top: 4px solid #4CAF50;
}

.led-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.led-card-content {
    padding: 20px;
}

.led-card-content h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    color: #1a5a37;
    position: relative;
    padding-bottom: 10px;
}

.led-card-content h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: #4CAF50;
}

.led-card-content p {
    margin-bottom: 15px;
    line-height: 1.5;
    color: #555;
    font-size: 0.95rem;
}

.led-features {
    list-style: none;
    margin-top: 15px;
}

.led-features li {
    margin-bottom: 8px;
    display: flex;
    align-items: flex-start;
    font-size: 0.9rem;
}

.led-features li i {
    color: #4CAF50;
    margin-right: 8px;
    margin-top: 3px;
}

.led-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
}

.led-intro p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #555;
}

/* LED 버튼 스타일 */
.led-btn {
    background-color: #4CAF50;
    color: white;
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    border: 2px solid #4CAF50;
    transition: all 0.3s ease;
}

.led-btn:hover {
    background-color: transparent;
    color: #4CAF50;
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(76, 175, 80, 0.2);
}

@media (max-width: 768px) {
    .led-grid {
        grid-template-columns: 1fr;
    }
}

/* 상담 전화번호 강조 스타일 */
.contact-phone-highlight {
    margin-bottom: 20px;
    padding: 15px;
    background-color: #f9f9f9;
    border-left: 5px solid #007bff;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.contact-phone-highlight h4 {
    margin-bottom: 10px;
    color: #007bff;
    font-size: 1.4rem;
}

.highlight-phone {
    display: flex;
    align-items: center;
}

.highlight-phone i {
    font-size: 1.8rem;
    color: #007bff;
    margin-right: 10px;
}

.highlight-phone span {
    font-size: 2rem;
    font-weight: bold;
    color: #212529;
}

/* 반응형 디자인 - 모바일 최적화 (16:9 세로 화면) */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background-color: white;
        z-index: 1000;
        transition: right 0.3s ease;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        padding: 80px 20px 20px;
    }
    
    nav.active {
        right: 0;
    }
    
    nav ul {
        flex-direction: column;
        align-items: start;
    }
    
    nav ul li {
        margin: 0 0 20px 0;
        width: 100%;
    }
    
    nav ul li a {
        display: block;
        padding: 10px 0;
        font-size: 1.1rem;
    }
    
    header .container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .mobile-menu-backdrop {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 999;
        display: none;
    }
    
    .mobile-menu-backdrop.active {
        display: block;
    }
    
    .main-visual {
        height: calc(100vh * 9/16);
        min-height: 400px;
    }
    
    .main-visual h2 {
        font-size: 2.2rem;
    }
    
    .main-visual p {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .business-content {
        gap: 30px;
    }
    
    .business-image, .business-details {
        flex: 100%;
    }
    
    .feature {
        min-width: 100%;
    }
    
    .solar-additional-info {
        flex-direction: column;
    }
    
    .solar-type {
        min-width: 100%;
    }
    
    .gallery-container {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .gallery-image {
        height: 180px;
    }
    
    .process-timeline::before {
        left: 30px;
    }
    
    .step-number {
        width: 60px;
        height: 60px;
        font-size: 1.3rem;
    }
    
    .contact-content {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-logo, .footer-links, .footer-contact {
        min-width: 100%;
    }
    
    .highlight-phone span {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .main-visual {
        height: calc(100vh * 9/16);
        min-height: 350px;
    }
    
    .main-visual h2 {
        font-size: 1.8rem;
    }
    
    .main-visual p {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
        margin-bottom: 30px;
    }
    
    .btn {
        padding: 10px 20px;
    }
    
    .intro, .business-section, .process-section, .contact-section, .gallery-section {
        padding: 50px 0;
    }
    
    .business-details h3 {
        font-size: 1.5rem;
    }
    
    .stat .number {
        font-size: 2.5rem;
    }
    
    .process-step {
        flex-direction: column;
    }
    
    .step-number {
        margin-bottom: 15px;
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .step-content {
        padding-left: 0;
    }
    
    .process-timeline::before {
        display: none;
    }
    
    .gallery-container {
        grid-template-columns: 1fr;
    }
    
    .gallery-item {
        max-width: 100%;
    }
    
    .gallery-image {
        height: 200px;
    }
    
    .contact-form {
        padding: 20px;
    }
    
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-bottom p {
        font-size: 0.8rem;
    }
    
    .main-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-secondary {
        margin-left: 0;
        margin-top: 10px;
    }
}