/* 폰트 임포트 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;700&family=Poppins:wght@300;400;500;600;700&display=swap');

/* 기본 리셋 및 변수 */
:root {
    --primary-color: #4e73df;
    --primary-dark: #3a5bc7;
    --primary-color-rgb: 78, 115, 223;
    --secondary-color: #f8a100;
    --secondary-color-rgb: 248, 161, 0;
    --accent-color: #36b9cc;
    --accent-color-rgb: 54, 185, 204;
    --text-color: #333;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --bg-dark: #212529;
    --border-color: #e3e6f0;
    --box-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.15);
    --transition: all 0.3s ease;
    --border-radius: 0.5rem;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

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

/* 언어 전환 관련 스타일 */
[data-lang-en] {
    display: none;
}

body.en [data-lang-ko] {
    display: none;
}

body.en [data-lang-en] {
    display: inline-block;
}

body.en span[data-lang-en], 
body.en p[data-lang-en], 
body.en h1[data-lang-en], 
body.en h2[data-lang-en], 
body.en h3[data-lang-en] {
    display: block;
}

/* 기본 컨테이너 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* 기본 요소 스타일 */
img {
    max-width: 100%;
    height: auto;
}

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

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

ul {
    list-style: none;
}

/* 버튼 스타일 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

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

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

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background-color: #e09200;
    color: white;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* 언어 선택기 스타일 */
.language-selector {
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 100;
    display: flex;
}

.language-selector button {
    background: transparent;
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    transition: var(--transition);
}

.language-selector button:first-child {
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.language-selector button:last-child {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.language-selector button.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 헤더 스타일 */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 50;
    padding: 1rem 0;
}

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

.logo a {
    display: block;
}

.nav-menu {
    display: flex;
}

.nav-menu > li {
    position: relative;
    margin-left: 1.5rem;
}

.nav-menu > li > a {
    color: var(--text-color);
    font-weight: 500;
    padding: 0.5rem 0;
    display: block;
}

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    box-shadow: var(--box-shadow);
    border-radius: var(--border-radius);
    width: 200px;
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 20;
}

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

.dropdown-menu li a {
    padding: 0.5rem 1rem;
    display: block;
    color: var(--text-color);
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
}

/* 히어로 섹션 스타일 */
.hero {
    padding: 4rem 0;
    background-color: var(--bg-light);
    overflow: hidden;
}

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

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

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

.hero h1 {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--bg-dark);
}

.hero h1 span {
    color: var(--primary-color);
}

.hero p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    color: var(--text-light);
}

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

/* 서비스 섹션 스타일 */
.services {
    padding: 5rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.25rem;
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--primary-color);
}

.section-description {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
    color: var(--text-light);
}

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

.service-card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
}

.service-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.read-more {
    font-weight: 500;
    display: inline-flex;
    align-items: center;
}

.read-more::after {
    content: '\f105';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    margin-left: 0.5rem;
    transition: var(--transition);
}

.read-more:hover::after {
    margin-left: 0.75rem;
}

/* 포트폴리오 미리보기 스타일 */
.portfolio-preview {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.portfolio-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.portfolio-item img {
    width: 100%;
    display: block;
    transition: var(--transition);
}

.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 1.5rem;
    transform: translateY(100%);
    transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
    transform: translateY(0);
}

.portfolio-item:hover img {
    transform: scale(1.1);
}

.portfolio-overlay h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.portfolio-overlay p {
    margin-bottom: 1rem;
    opacity: 0.8;
    font-size: 0.875rem;
}

.portfolio-cta {
    text-align: center;
}

/* 앱 가이드 미리보기 스타일 */
.app-guides-preview {
    padding: 5rem 0;
}

.guides-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.guide-card {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    transition: var(--transition);
}

.guide-card:hover {
    transform: translateY(-10px);
}

.guide-card img {
    width: 100%;
    display: block;
}

.guide-card h3 {
    padding: 1.5rem 1.5rem 0.5rem;
    font-size: 1.25rem;
}

.guide-card p {
    padding: 0 1.5rem 1rem;
    color: var(--text-light);
    font-size: 0.875rem;
}

.guide-card .read-more {
    padding: 0 1.5rem 1.5rem;
    display: block;
}

.guides-cta {
    text-align: center;
}

/* 고객 후기 스타일 */
.testimonials {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.testimonial-slider {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.testimonial-slide {
    display: none;
    animation: fade 0.5s;
}

.testimonial-slide.active {
    display: block;
}

@keyframes fade {
    from {
        opacity: 0.5;
    }
    to {
        opacity: 1;
    }
}

.testimonial-content {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 3rem;
    text-align: center;
}

.quote-icon {
    font-size: 2rem;
    color: var(--primary-color);
    opacity: 0.3;
    margin-bottom: 1.5rem;
}

.testimonial-content p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    font-style: italic;
}

.testimonial-author h4 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.testimonial-author p {
    font-size: 0.875rem;
    margin-bottom: 0;
    color: var(--text-light);
    font-style: normal;
}

.testimonial-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 2rem;
}

.prev-btn,
.next-btn {
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
}

.prev-btn:hover,
.next-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

.testimonial-dots {
    display: flex;
    margin: 0 1rem;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #ccc;
    margin: 0 0.25rem;
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background-color: var(--primary-color);
}

/* CTA 섹션 스타일 */
.cta {
    padding: 5rem 0;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    color: white;
}

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

.cta h2 {
    font-size: 2.25rem;
    margin-bottom: 1.5rem;
}

.cta p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta .btn-primary {
    background-color: white;
    color: var(--primary-color);
}

.cta .btn-primary:hover {
    background-color: var(--secondary-color);
    color: white;
}

/* 푸터 스타일 */
footer {
    background-color: var(--bg-dark);
    color: white;
    padding: 5rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-logo img {
    margin-bottom: 1rem;
}

.footer-logo p {
    opacity: 0.7;
}

.footer-links-column h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-links-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-links-column ul li {
    margin-bottom: 0.75rem;
}

.footer-links-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-links-column ul li a:hover {
    color: white;
    padding-left: 0.5rem;
}

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

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

.social-icons a:hover {
    background-color: var(--primary-color);
    transform: translateY(-5px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
    font-size: 0.875rem;
    opacity: 0.7;
}

/* 로딩 스피너 */
.spinner {
    width: 40px;
    height: 40px;
    margin: 100px auto;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 알림 메시지 */
.alert {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.alert-success {
    background-color: rgba(40, 167, 69, 0.1);
    border: 1px solid rgba(40, 167, 69, 0.2);
    color: #28a745;
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.1);
    border: 1px solid rgba(220, 53, 69, 0.2);
    color: #dc3545;
}

.alert-warning {
    background-color: rgba(var(--secondary-color-rgb), 0.1);
    border: 1px solid rgba(var(--secondary-color-rgb), 0.2);
    color: var(--secondary-color);
}

.alert-info {
    background-color: rgba(var(--primary-color-rgb), 0.1);
    border: 1px solid rgba(var(--primary-color-rgb), 0.2);
    color: var(--primary-color);
}

/* 배지 스타일 */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-primary {
    background-color: var(--primary-color);
    color: white;
}

.badge-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.badge-light {
    background-color: var(--bg-light);
    color: var(--text-color);
}

/* 반응형 스타일 */
@media (max-width: 1200px) {
    html {
        font-size: 15px;
    }
}

@media (max-width: 992px) {
    html {
        font-size: 14px;
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-logo {
        grid-column: 1 / -1;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 2.25rem;
    }
}

@media (max-width: 768px) {
    .hero .container {
        flex-direction: column;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 2rem;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -300px;
        width: 300px;
        height: 100vh;
        background-color: white;
        flex-direction: column;
        padding: 2rem;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
        z-index: 100;
        overflow-y: auto;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu > li {
        margin-left: 0;
        margin-bottom: 1rem;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 1rem;
    }
    
    .nav-menu > li:last-child {
        border-bottom: none;
    }
    
    .dropdown-menu {
        position: static;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        width: 100%;
        display: none;
        padding-left: 1rem;
    }
    
    .dropdown.active .dropdown-menu {
        display: block;
    }
    
    .dropdown-menu li a {
        padding-left: 1rem;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .section-title {
        font-size: 2rem;
    }
}

.logo img {
    width: 200px;
    height: auto;
    display: block;
}


@media (max-width: 576px) {
    html {
        font-size: 13px;
    }
    
    .service-grid,
    .portfolio-grid,
    .guides-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .testimonial-content {
        padding: 2rem 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .cta h2 {
        font-size: 1.75rem;
    }
    
    /* 연락처 폼 */
    .form-row {
        flex-direction: column;
    }
    
    .form-row .form-group {
        margin-bottom: 1rem;
    }
}

/* 애니메이션 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeIn {
    animation: fadeIn 0.8s ease forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}