/* ========================================
   Global Styles & Variables
======================================== */
:root {
    --primary-color: #1E88E5;
    --secondary-color: #64B5F6;
    --dark-blue: #0D47A1;
    --light-blue: #E3F2FD;
    --text-dark: #212121;
    --text-gray: #757575;
    --text-light: #BDBDBD;
    --white: #FFFFFF;
    --bg-light: #F5F5F5;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* ========================================
   Navigation
======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-lg);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

/.logo i {
    font-size: 1.8rem;
}

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: var(--transition);
}

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

.nav-menu li {
    position: relative;
}

.nav-menu a {
    color: var(--text-dark);
    font-weight: 500;
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 5px;
}

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    box-shadow: var(--shadow-lg);
    border-radius: 8px;
    min-width: 200px;
    padding: 0.5rem 0;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
}

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

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    padding: 0.75rem 1.5rem;
    display: block;
    color: var(--text-dark);
}

.dropdown-menu a:hover {
    background: var(--light-blue);
    color: var(--primary-color);
}

.btn-contact {
    background: var(--primary-color);
    color: var(--white) !important;
    padding: 0.6rem 1.5rem !important;
    border-radius: 25px;
    font-weight: 600;
}

.btn-contact:hover {
    background: var(--dark-blue);
    transform: translateY(-2px);
}

/* ========================================
   Hero Section
======================================== */
/* ���� ��ü �����̳� ���� */
.hero {
    position: relative; 
    width: 100%;
    height: 100vh; 
    overflow: hidden; 
}

/* ��� ������ ���� ������ ���� */
.bg-video {
    position: absolute; 
    top: 50%; 
    left: 50%; 
    transform: translate(-50%, -50%); 
    min-width: 100%; 
    min-height: 100%;
    width: auto; 
    height: auto;
    object-fit: cover; 
    z-index: -2; 
}

/* ��� �������� */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.3);
    z-index: -1;
}

/* ?? ������ �����̳�: ���� ������ ������ */
.hero-content {
    position: relative;
    z-index: 1;
    color: var(--white);
    text-align: left; /* ?? ���� ���� */
    padding-top: 20vh; /* ��� ���� ���� */
}

/* ���� ��Ÿ�� */
.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-title .highlight {
    color: var(--light-blue);
    position: relative;
}

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

/* ?? ��ư �׷�: ���� ���� */
.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: flex-start; /* ?? ���� ���� */
    margin-bottom: 4rem;
    margin-top: 30px; /* ���� �ڵ�� ���� */
}

/* ?? ��� ����: ���� ���� */
.hero-stats {
    display: flex;
    justify-content: flex-start; /* ?? ���� ���� */
    gap: 4rem;
    margin-top: 40px; /* ���� �ڵ�� ���� */
}

.stat-item {
    text-align: left; /* ��� �׸� ���� �ؽ�Ʈ�� ���� ���� */
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* ��ư ��Ÿ�� (���� ����) */
.btn {
    padding: 1rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    display: inline-block;
}

.btn-primary {
    background: var(--white);
    color: var(--primary-color);
}
.btn-primary:hover {
    background: var(--light-blue);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}
.btn-secondary:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-3px);
}

/* ��ũ�� �ε������� �� �ִϸ��̼� (���� ����) */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--white);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid var(--white);
    border-radius: 15px;
    margin: 0 auto 10px;
    position: relative;
}

.mouse::before {
    content: '';
    width: 4px;
    height: 8px;
    background: var(--white);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        top: 8px;
    }
    100% {
        opacity: 0;
        top: 20px;
    }
}

/* ========================================
   Section Common Styles
======================================== */
section {
    padding: 5rem 0;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-title .highlight {
    color: var(--primary-color);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-gray);
}
/* ========================================
  About-us Section
======================================== */
/* --- ?�사 ?�개 ?�션 ?��???--- */
.about-us {
    padding: 5rem 0; /* ?�하 ?�백 */
    background-color: var(--bg-light); /* ?�션 배경??*/
}

.about-container {
    /* ?��? 콘텐츠�? 가로로 ?�렬?�기 ?�해 Flexbox ?�용 */
    display: flex;
    align-items: center; /* ?�직 중앙 ?�렬 */
    gap: 3rem; /* ?��?지?� ?�스???�이??간격 */
    max-width: 1200px; /* 최�? ?�비 ?�정 */
    margin: 0 auto; /* 중앙 ?�렬 */
    padding: 0 1rem; /* 좌우 ?�딩 */
}

/* ?���??�쪽: ?��?지 컨테?�너 ?��???*/
.about-image {
    flex: 1 1 50%; /* 컨테?�너 ?�비??50%�?기본?�로 ?�연?�게 조정 */
    min-width: 300px; /* ?��?지가 ?�무 ?�아지지 ?�도�?최소 ?�비 ?�정 */
}

.about-image img {
    /* 부�?컨테?�너(about-image)??맞춰 ?�비�?100%�??�정?�여 ?�동?�로 ?�기 조정 */
    width: 100%; 
    height: auto;
    display: block;
    border-radius: 10px; /* 모서�??��?�?*/
    box-shadow: var(--shadow); /* 그림???�과 */
}

/* ?�️ ?�른�? 콘텐�??��???*/
.about-content {
    flex: 1 1 50%; /* 컨테?�너 ?�비??50%�?기본?�로 ?�연?�게 조정 */
}

.section-title {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
}

.greeting h3 {
    font-size: 1.75rem;
    margin-top: 1rem;
    color: var(--text-dark);
}

.greeting p {
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 2rem;
}

/* ?�징 리스???��???*/
.features-list {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
}

.features-list li {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

/* ?�� 반응???�자?? ?�면???�아지�??�로�?배치 */
@media (max-width: 900px) {
    .about-container {
        flex-direction: column; /* 가로에???�로�?변�?*/
        text-align: center; /* ?�스?��? 중앙 ?�렬 */
    }

    .about-content {
        margin-top: 2rem; /* ?��?지?� ?�스???�이 간격 추�? */
    }

    .subtitle {
        text-align: center;
    }

    .features-list {
        text-align: left; /* 리스?�는 ?�시 ?�쪽 ?�렬 */
        max-width: 400px; /* 리스??중앙 ?�렬???�한 최�? ?�비 */
        margin-left: auto;
        margin-right: auto;
    }
}
/* ========================================
   Features Section
======================================== */
.features {
    background: var(--bg-light);
}

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

.feature-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.feature-icon i {
    font-size: 2.5rem;
    color: var(--white);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

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

/* ========================================
   Services Section
======================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    border: 2px solid var(--light-blue);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
    z-index: -1;
}

.service-card:hover::before {
    left: 0;
}

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

.service-icon {
    width: 70px;
    height: 70px;
    background: var(--light-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--white);
}

.service-icon i {
    font-size: 2rem;
    color: var(--primary-color);
}

.service-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.service-card p {
    color: var(--text-gray);
    transition: var(--transition);
}

.service-card:hover p {
    color: var(--white);
}

.service-arrow {
    margin-top: 1rem;
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.service-card:hover .service-arrow {
    color: var(--white);
    transform: translateX(10px);
}

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

.process-steps {
    max-width: 900px;
    margin: 0 auto;
}

.process-step {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    align-items: flex-start;
}

.step-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--secondary-color);
    min-width: 100px;
    text-align: center;
}

.step-content h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.step-content p {
    color: var(--text-gray);
    font-size: 1.1rem;
    line-height: 1.8;
}
/* ========================================
   Intro Section
======================================== */
.intro-section {
    display: flex;
    align-items: center;
    gap: 20px;
}

.intro-image {
    flex: 0 0 40%; /* ?�쪽 40% */
}

.intro-image img {
    width: 100%;
    height: auto;
    border-radius: 15px; /* 직사각형 ?�근 모서�?*/
    object-fit: cover;
}

.intro-text {
    flex: 1; /* ?�른�?60% */
}

/* ========================================
   Contact Section
======================================== */
.contact {
    background: var(--white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-info p {
    font-size: 1.1rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
}

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

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 0.2rem;
}

.contact-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.2rem;
    color: var(--text-dark);
}

.contact-item p {
    color: var(--text-gray);
    margin: 0;
}

.contact-form {
    background: var(--bg-light);
    padding: 2.5rem;
    border-radius: 15px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-family: 'Noto Sans KR', sans-serif;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.btn-full {
    width: 100%;
}

/* ========================================
   Footer
======================================== */
.footer {
    background: var(--dark-blue);
    color: var(--white);
    padding: 3rem 0 1rem;
}

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

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-logo i {
    font-size: 1.8rem;
}

.footer-desc {
    margin-bottom: 1.5rem;
    opacity: 0.9;
    line-height: 1.8;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    opacity: 0.9;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--secondary-color);
    padding-left: 5px;
}

.footer-info {
    list-style: none;
}

.footer-info li {
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 10px;
    opacity: 0.9;
}

.footer-info i {
    color: var(--secondary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
    opacity: 0.8;
}

/* ========================================
   Back to Top Button
======================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--dark-blue);
    transform: translateY(-5px);
}

/* ========================================
   AOS Animation Styles
======================================== */
[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="fade-right"] {
    transform: translateX(-30px);
}

[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
}

[data-aos="fade-left"] {
    transform: translateX(30px);
}

[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
}

[data-aos="zoom-in"] {
    transform: scale(0.9);
}

[data-aos="zoom-in"].aos-animate {
    transform: scale(1);
}

/* ========================================
   Responsive Design
======================================== */
@media (max-width: 968px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 280px;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
        align-items: flex-start;
    }

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

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        box-shadow: none;
        margin-left: 1rem;
        margin-top: 0.5rem;
    }

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

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

    .hero-buttons {
        flex-direction: column;
    }

    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }

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

    .process-step {
        flex-direction: column;
        text-align: center;
    }

    .step-number {
        min-width: auto;
    }
}

@media (max-width: 600px) {
    .section-title {
        font-size: 2rem;
    }

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

    .btn {
        font-size: 1rem;
        padding: 0.8rem 1.5rem;
    }

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