Reset and Base Styles
{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
}

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

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 50px;
    padding: 1rem 0;
}

.logo-link {
    display: block; 
    width: 150px; 
    height: 65px;
    background: url('images/logo.PNG') no-repeat center center;
    text-indent: -9999px; 
    overflow: hidden;
}

.logo img {
    height: 40px;
}

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

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #0066CC;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #0066CC;
    transition: width 0.3s ease;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    height: 80vh;
    padding: 0 15px;
    position: relative;
    overflow: hidden;
}

.hero-slider {
    height: 80vh;
    position: relative;
    top: 0;
    left: 0;
    width: 100%;
    z-index: -1;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.hero-slide.active {
    opacity: 1;
}

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

.hero-content {
    position: relative;
    padding-right: 20px;
    height: 100%;
    display: flex;
    align-items: center;
    z-index: 2;
}

.hero-content .container {
    position: relative;
    display: flex;
    align-items: center;     /* 수직 가운데 정렬 */
    justify-content: space-between;  /* 좌우 여백 균등 */
    gap: 40px;
    max-width: 1200px;       /* 전체 폭 제한 */
    margin: 0 auto;          /* 가운데 정렬 */
    padding: 0 0 0 20px;         /* 좌우 여백 */
}

.hero-text {
    flex: 1;                 /* 텍스트 영역 가변 */
    min-width: 450px;
}

.hero-image {
    flex: 1;
    text-align: right;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.text-highlight {
    color: #FFD700;
}

.hero-description {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.hero-nav {
    display: none;
    position: absolute;
    bottom: 15%;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    z-index: 10;
}

.hero-nav-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid white;
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

.hero-nav-btn.active,
.hero-nav-btn:hover {
    background: white;
}

/* Hero Arrow Buttons */
.hero-arrows {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 30px;
    pointer-events: none;
    z-index: 15;
}

.hero-arrow {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    pointer-events: auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-arrow:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.1);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.hero-arrow:active {
    transform: scale(0.95);
}

.hero-arrow-left {
    animation: slideInLeft 0.8s ease-out 0.5s both;
}

.hero-arrow-right {
    animation: slideInRight 0.8s ease-out 0.5s both;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: #0066CC;
    color: white;
    border-color: #0066CC;
}

.btn-primary:hover {
    background: #0052A3;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 102, 204, 0.3);
}

.btn-outline {
    background: transparent;
    color: white;
    border-color: white;
}

.btn-outline:hover {
    background: white;
    color: #0066CC;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.3);
}

.btn-sm {
    padding: 8px 20px;
    font-size: 0.9rem;
}

.btn-full {
    width: 100%;
}

/* Section Styles */
section {
    padding: 100px 0;
    position: relative;
    z-index: 10;
    background: white;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    background: #F8F9FA;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 1.5rem;
}

.about-text p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.features {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 3rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #0066CC, #004499);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.feature-content h4 {
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 0.5rem;
}

.feature-content p {
    color: #666;
    margin: 0;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

/* Products Section */
.products {
    background: white;
}

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

.product-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.product-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.product-content {
    padding: 2rem;
}

.product-content h3 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 1rem;
}

.product-content p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* News Section */
.news {
    background: #F8F9FA;
}

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

.news-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.news-date {
    color: #0066CC;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.news-card h3 {
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 1rem;
}

.news-card p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.news-link {
    color: #0066CC;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

.news-link:hover {
    color: #004499;
}

/* Video Section */
.video-section {
    background: linear-gradient(135deg, #0066CC 0%, #004499 100%);
    color: white;
}

.video-container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.video-placeholder {
    position: relative;
    width: 100%;
    height: 450px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    overflow: hidden;
}

.play-button {
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.play-button:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.video-overlay {
    position: absolute;
    bottom: 30px;
    left: 30px;
    right: 30px;
}

.video-overlay h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.video-overlay p {
    color: rgba(255, 255, 255, 0.8);
}

/* Contact Section */
.contact {
    background: white;
}

.contact-content {
    align-items: center;
    justify-content: center;
    width: 30%;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    padding: 0 0 0 30%;
}

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

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

.contact-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: darkblue;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.contact-icon i {
    font-size: 20px;
}

.contact-details h4 {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: #666;
}

.contact-form {
    background: #F8F9FA;
    padding: 2rem;
    border-radius: 15px;
}

/* Footer */
.footer {
    background: #333;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 3rem;
    align-items: start;
    margin-bottom: 2rem;
}

.footer-logo img {
    height: 40px;
}

.footer-info p {
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 1rem;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

@Media (max-width: 1475px) {
    .hero-arrows {
        display: none;
    }

    .hero-nav {
        display: block;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-list {
        display: flex;
        position: fixed;
        top: 82px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        border-top: 2px solid darkblue;
        margin: 0;
        padding: 2rem 5%;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.5);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.3s ease, opacity 0.3s ease;;
    }

    .nav-list.show {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
        padding-right: 20px;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(4px, 8px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(4px, -8px);
    }

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

    .hero-content .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        min-width: 200px;
    }
}

@media (max-width: 480px) {
    section {
        padding: 60px 0;
    }

    .hero-content .container {
        padding: 0;
    }

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

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

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

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

    .products-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}