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

:root {
    --primary-color: #00D9FF;
    --secondary-color: #0099FF;
    --dark-bg: #0A0E27;
    --darker-bg: #050814;
    --card-bg: #151932;
    --text-primary: #FFFFFF;
    --text-secondary: #B8C5D0;
    --gradient-1: linear-gradient(135deg, #00D9FF 0%, #0099FF 100%);
    --gradient-2: linear-gradient(135deg, #0A0E27 0%, #151932 100%);
}

body {
    font-family: 'NanumSquare', 'Nanum Square', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

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

/* Code Background Animation */
.code-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.05;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    color: var(--primary-color);
    overflow: hidden;
    pointer-events: none;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 20px 0;
    border-bottom: 1px solid rgba(0, 217, 255, 0.1);
}

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

.logo {
    font-size: 28px;
    font-weight: bold;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

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

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

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

.mobile-menu {
    position: fixed;
    top: 70px;
    right: -100%;
    width: 250px;
    height: calc(100vh - 70px);
    background: rgba(10, 14, 39, 0.98);
    backdrop-filter: blur(10px);
    z-index: 999;
    transition: right 0.3s;
    padding: 20px;
    border-left: 1px solid rgba(0, 217, 255, 0.1);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-item {
    display: block;
    padding: 15px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s;
    border-bottom: 1px solid rgba(0, 217, 255, 0.1);
}

.mobile-menu-item:hover {
    color: var(--primary-color);
    padding-left: 20px;
}

/* Carousel Section */
.carousel-section {
    margin-top: 70px;
    background: var(--darker-bg);
}

.carousel-container {
    position: relative;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    overflow: hidden;
    aspect-ratio: 16 / 9;
}

.carousel-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
    height: 100%;
}

.carousel-item {
    min-width: 100%;
    height: 100%;
    position: relative;
}

.carousel-item img,
.carousel-item iframe {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* YouTube Carousel Styles */
.youtube-carousel-link {
    display: block;
    width: 100%;
    height: 100%;
    position: relative;
    text-decoration: none;
}

.youtube-thumbnail-container {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
    background: #000;
}

.youtube-thumbnail-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.youtube-carousel-link:hover .youtube-thumbnail-container img {
    transform: scale(1.05);
}

.youtube-play-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    pointer-events: none;
    transition: all 0.3s ease;
    opacity: 0.9;
}

.youtube-carousel-link:hover .youtube-play-overlay {
    transform: translate(-50%, -50%) scale(1.1);
    opacity: 1;
}

.youtube-play-overlay svg {
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 217, 255, 0.3);
    border: none;
    color: white;
    font-size: 40px;
    width: 50px;
    height: 50px;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s;
    border-radius: 50%;
}

.carousel-btn:hover {
    background: rgba(0, 217, 255, 0.6);
}

.carousel-btn.prev {
    left: 20px;
}

.carousel-btn.next {
    right: 20px;
}

.carousel-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.carousel-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s;
}

.carousel-indicator.active {
    background: var(--primary-color);
    width: 30px;
    border-radius: 6px;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    text-align: center;
    background: var(--gradient-2);
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: 15px 35px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary {
    background: var(--gradient-1);
    color: var(--dark-bg);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 217, 255, 0.3);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--dark-bg);
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    line-height: 1.4;
}

/* Pain Point Section */
.pain-point {
    background: var(--darker-bg);
}

.pain-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.pain-card {
    background: var(--card-bg);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s;
    border: 1px solid transparent;
}

.pain-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 40px rgba(0, 217, 255, 0.2);
}

.pain-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.pain-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

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

/* Core Edge Section */
.core-edge {
    background: var(--dark-bg);
}

.edge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.edge-card {
    background: var(--card-bg);
    padding: 40px 30px;
    border-radius: 15px;
    transition: all 0.3s;
    border: 1px solid rgba(0, 217, 255, 0.1);
}

.edge-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 40px rgba(0, 217, 255, 0.2);
}

.edge-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.edge-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

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

/* Service Section */
.services {
    background: var(--darker-bg);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--card-bg);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s;
    border: 1px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 40px rgba(0, 217, 255, 0.2);
}

.service-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

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

/* R&D Support Section */
.rd-support {
    background: var(--dark-bg);
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.support-card {
    background: var(--card-bg);
    padding: 40px 30px;
    border-radius: 15px;
    transition: all 0.3s;
    border: 1px solid rgba(0, 217, 255, 0.1);
}

.support-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 40px rgba(0, 217, 255, 0.2);
}

.support-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
    opacity: 0.3;
}

.support-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

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

/* Portfolio Section */
.portfolio {
    background: var(--darker-bg);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.portfolio-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s;
    border: 1px solid rgba(0, 217, 255, 0.1);
}

.portfolio-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 40px rgba(0, 217, 255, 0.3);
}

.portfolio-thumbnail {
    width: 100%;
    height: 250px;
    object-fit: cover;
    background: var(--card-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 14px;
}

.portfolio-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* News Section */
.news {
    background: var(--dark-bg);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.news-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s;
    border: 1px solid rgba(0, 217, 255, 0.1);
}

.news-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 40px rgba(0, 217, 255, 0.3);
}

.news-thumbnail {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--card-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.news-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(0, 217, 255, 0.8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

/* Process Section */
.process {
    background: var(--darker-bg);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.process-step {
    background: var(--card-bg);
    padding: 30px 20px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s;
    border: 1px solid rgba(0, 217, 255, 0.1);
    position: relative;
}

.process-step:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 40px rgba(0, 217, 255, 0.2);
}

.process-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
    opacity: 0.5;
}

.process-step h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--primary-color);
}

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

/* Trust Section */
.trust {
    background: var(--dark-bg);
}

.trust-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

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

.stat-number {
    font-size: 56px;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

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

/* Contact Section */
.contact {
    background: var(--darker-bg);
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    background: var(--card-bg);
    padding: 40px;
    border-radius: 15px;
    border: 1px solid rgba(0, 217, 255, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--primary-color);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    background: var(--dark-bg);
    border: 1px solid rgba(0, 217, 255, 0.2);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 15px rgba(0, 217, 255, 0.2);
}

.form-group textarea {
    resize: vertical;
}

.contact-form .btn-primary {
    width: 100%;
    margin-top: 10px;
}

/* Footer */
.footer {
    background: var(--darker-bg);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(0, 217, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 24px;
    margin-bottom: 15px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.footer-link {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 10px;
    transition: color 0.3s;
}

.footer-link:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(0, 217, 255, 0.1);
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .section-title {
        font-size: 28px;
    }

    .carousel-container {
        aspect-ratio: 16 / 9;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 30px;
    }

    .carousel-btn.prev {
        left: 10px;
    }

    .carousel-btn.next {
        right: 10px;
    }

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

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .contact-form {
        padding: 30px 20px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .stat-number {
        font-size: 42px;
    }

    .process-timeline {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 26px;
    }

    .section-title {
        font-size: 24px;
    }

    .carousel-container {
        aspect-ratio: 16 / 9;
    }

    .logo {
        font-size: 24px;
    }

    section {
        padding: 60px 0;
    }
}