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

:root {
    /* Color Palette - 화이트 컨셉 */
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-gray: #ecf0f1;
    --border-color: #e1e8ed;
    --kakao-yellow: #FEE500;
    --kakao-brown: #3c1e1e;
    
    /* Typography */
    --font-main: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-max-width: 1200px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    
    /* Transitions */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--text-primary);
    background-color: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Navigation Bar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

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

/* ===== Hero Section ===== */
.hero {
    padding: 150px 0 100px;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--primary-color);
}

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

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-placeholder {
    width: 100%;
    max-width: 500px;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 5rem;
    box-shadow: var(--shadow-lg);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 35px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-kakao {
    background: var(--kakao-yellow);
    color: var(--kakao-brown);
    font-weight: 700;
}

.btn-kakao:hover {
    background: #fdd835;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===== Section Styles ===== */
section {
    padding: var(--section-padding);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.section-subtitle {
    font-size: 1.1rem;
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 60px;
}

/* ===== Services Section ===== */
.services {
    background: var(--bg-white);
}

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

.service-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 15px;
    border: 2px solid var(--border-color);
    transition: var(--transition);
    text-align: center;
}

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

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 25px;
    font-size: 2rem;
    color: white;
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

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

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

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 20px;
    border: 2px solid var(--border-color);
    transition: var(--transition);
    text-align: center;
    position: relative;
}

.pricing-card.featured {
    border-color: var(--secondary-color);
    border-width: 3px;
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

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

.pricing-card.featured:hover {
    transform: translateY(-10px) scale(1.05);
}

.pricing-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--primary-color);
    color: white;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

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

.pricing-title {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.pricing-price {
    margin: 30px 0;
}

.pricing-price .currency {
    font-size: 1.5rem;
    vertical-align: top;
    color: var(--text-secondary);
}

.pricing-price .amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.pricing-features {
    list-style: none;
    margin: 30px 0;
    text-align: left;
}

.pricing-features li {
    padding: 12px 0;
    border-bottom: 1px solid var(--bg-gray);
    display: flex;
    align-items: center;
    gap: 10px;
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features i {
    color: var(--secondary-color);
    font-size: 1.1rem;
}

.pricing-features li.disabled {
    color: var(--text-secondary);
    opacity: 0.5;
}

.pricing-features li.disabled i {
    color: var(--text-secondary);
}

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

.process-timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 40px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--secondary-color), var(--primary-color));
}

.process-step {
    display: flex;
    gap: 30px;
    margin-bottom: 50px;
    position: relative;
}

.step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
    z-index: 1;
}

.step-content {
    flex: 1;
    background: var(--bg-white);
    padding: 30px;
    border-radius: 15px;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.step-content:hover {
    border-color: var(--secondary-color);
    box-shadow: var(--shadow-md);
    transform: translateX(10px);
}

.step-content h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.step-content h3 i {
    color: var(--secondary-color);
}

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

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

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

.portfolio-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 1;
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.portfolio-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-color);
}

.portfolio-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #ecf0f1, #bdc3c7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--text-secondary);
    font-size: 3rem;
}

.portfolio-image-placeholder p {
    font-size: 1rem;
    margin-top: 20px;
}

.portfolio-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    color: white;
    padding: 30px 20px;
    transform: translateY(100%);
    transition: var(--transition);
}

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

.portfolio-overlay h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.portfolio-overlay p {
    font-size: 0.9rem;
    opacity: 0.9;
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-card {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--secondary-color);
    box-shadow: var(--shadow-md);
}

.contact-card i {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.contact-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.contact-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.contact-steps {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 15px;
    border: 2px solid var(--border-color);
}

.contact-steps h3 {
    font-size: 1.5rem;
    margin-bottom: 25px;
    color: var(--primary-color);
}

.contact-steps ul {
    list-style: none;
}

.contact-steps li {
    padding: 12px 0;
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.contact-steps li:last-child {
    border-bottom: none;
}

.contact-steps i {
    color: var(--secondary-color);
    font-size: 1.2rem;
}

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

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-white);
    margin-bottom: 20px;
    border-radius: 15px;
    overflow: hidden;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.faq-item.warning {
    border-color: var(--accent-color);
    background: #fff5f5;
}

.faq-item:hover {
    border-color: var(--secondary-color);
    box-shadow: var(--shadow-sm);
}

.faq-question {
    padding: 25px 30px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

.faq-question h3 {
    font-size: 1.1rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.faq-question i.fa-chevron-down {
    color: var(--secondary-color);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i.fa-chevron-down {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 30px 25px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.faq-answer strong {
    color: var(--accent-color);
}

/* ===== Footer ===== */
.footer {
    background: var(--primary-color);
    color: white;
    padding: 60px 0 30px;
}

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

.footer-brand h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.footer-brand p {
    opacity: 0.8;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    padding-left: 5px;
}

.footer-contact p {
    opacity: 0.8;
    margin-bottom: 10px;
}

.footer-contact a {
    color: var(--kakao-yellow);
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    margin: 10px 0;
}

.footer-hours {
    font-size: 0.9rem;
    margin-top: 10px;
}

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

.footer-bottom p {
    opacity: 0.7;
    margin-bottom: 8px;
}

.footer-notice {
    font-size: 0.9rem;
}

/* ===== Scroll to Top Button ===== */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 999;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: var(--primary-color);
    transform: translateY(-5px);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Responsive Design ===== */
@media (max-width: 992px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-image {
        order: -1;
    }
    
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .process-timeline::before {
        left: 30px;
    }
    
    .step-number {
        width: 60px;
        height: 60px;
        font-size: 1.2rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        padding: 40px 20px;
        gap: 20px;
        transition: left 0.3s ease;
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    section {
        padding: 60px 0;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .process-step {
        gap: 15px;
    }
    
    .step-content {
        padding: 20px;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .pricing-price .amount {
        font-size: 2.5rem;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1rem;
    }
    
    .process-timeline::before {
        left: 25px;
    }
    
    .faq-question {
        padding: 20px;
    }
    
    .faq-question h3 {
        font-size: 1rem;
    }
}

/* ===== Print Styles ===== */
@media print {
    .navbar,
    .scroll-top,
    .hero-buttons,
    .menu-toggle {
        display: none;
    }
}

/* 포트폴리오 아이템 전체 컨테이너 설정 */
.portfolio-item {
    overflow: hidden; /* 확대될 때 밖으로 튀어나가는 이미지 부분 숨김 */
    position: relative;
    cursor: pointer;
}

/* 이미지 기본 설정 */
.portfolio-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease; /* 0.5초 동안 부드럽게 확대 */
}

/* 마우스를 올렸을 때 이미지 확대 */
.portfolio-item:hover .portfolio-image {
    transform: scale(1.1); /* 1.1배 크기로 확대 */
}