/* Landing Page Styles */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --text-dark: #1e293b;
    --text-gray: #64748b;
    --border-color: #e2e8f0;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Apple SD Gothic Neo', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 네비게이션 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-logo {
    height: 40px;
    width: auto;
}

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

.nav-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

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

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

.btn-login {
    padding: 0.5rem 1.5rem;
    background: transparent;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: background 0.3s;
}

.btn-login:hover {
    background: var(--bg-light);
}

.btn-signup {
    padding: 0.5rem 1.5rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: background 0.3s;
}

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

/* 히어로 섹션 */
.hero {
    margin-top: 80px;
    padding: 6rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.highlight {
    color: var(--accent-color);
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.8;
    opacity: 0.95;
    margin-bottom: 2rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.btn-primary-large {
    padding: 1rem 2rem;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 0.75rem;
    font-weight: 700;
    font-size: 1.1rem;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn-primary-large:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

.btn-secondary-large {
    padding: 1rem 2rem;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    text-decoration: none;
    border-radius: 0.75rem;
    font-weight: 700;
    font-size: 1.1rem;
    border: 2px solid white;
    transition: background 0.3s;
}

.btn-secondary-large:hover {
    background: rgba(255, 255, 255, 0.3);
}

.hero-badge {
    font-size: 0.9rem;
    opacity: 0.9;
}

.hero-mockup {
    background: white;
    border-radius: 1rem;
    padding: 3rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mockup-placeholder {
    text-align: center;
    color: var(--text-gray);
}

.mockup-placeholder p:first-child {
    font-size: 4rem;
    margin-bottom: 1rem;
}

/* 섹션 공통 */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 5rem 2rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 1.25rem;
    text-align: center;
    color: var(--text-gray);
    margin-bottom: 4rem;
}

/* 기능 섹션 */
.features {
    background: var(--bg-light);
}

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

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-description {
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.feature-image-placeholder {
    margin-top: 1.5rem;
}

.placeholder-box {
    background: var(--bg-light);
    padding: 3rem;
    border-radius: 0.5rem;
    text-align: center;
    color: var(--text-gray);
    border: 2px dashed var(--border-color);
}

/* 사용 방법 섹션 */
.how-it-works {
    background: white;
}

.steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 250px;
    text-align: center;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 1rem;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
}

.step-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.step-description {
    color: var(--text-gray);
    line-height: 1.8;
}

.step-arrow {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: bold;
}

/* 통계 섹션 */
.stats {
    background: var(--primary-color);
    color: white;
    padding: 4rem 2rem;
}

.stats-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    text-align: center;
}

.stat-value {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* CTA 섹션 */
.cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 6rem 2rem;
    text-align: center;
    color: white;
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-subtitle {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.btn-cta {
    display: inline-block;
    padding: 1rem 3rem;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.btn-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
}

/* 푸터 */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 2rem;
}

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

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

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    height: 40px;
    width: auto;
}

.footer-text {
    color: rgba(255, 255, 255, 0.7);
}

.footer-right {
    display: flex;
    gap: 2rem;
}

.footer-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-link:hover {
    color: white;
}

/* 반응형 */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .features-grid {
        grid-template-columns: 1fr;
    }

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

    .step-arrow {
        display: none;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .nav-right {
        gap: 0.75rem;
    }

    .nav-link {
        font-size: 0.9rem;
    }
}

/* 무료 서비스 설명 */
.free-service-info {
    margin: 2rem 0;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: 12px;
    border: 1px solid #0ea5e9;
}

.free-service-title {
    color: var(--primary-color);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.free-service-list {
    list-style: none;
    padding: 0;
}

.free-service-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.service-icon {
    font-size: 1.2rem;
    min-width: 1.5rem;
}

.service-text {
    color: var(--text-dark);
    font-size: 0.95rem;
}

/* 가격 정보 */
.pricing-info {
    margin: 1.5rem 0;
    padding: 1rem;
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border-radius: 8px;
    border: 1px solid #f59e0b;
}

.pricing-text {
    color: #92400e;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    margin: 0;
}

/* 타겟 유저 정보 */
.target-user-info {
    margin: 1.5rem 0;
    padding: 1rem;
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border-radius: 8px;
    border: 1px solid #22c55e;
}

.target-text {
    color: #15803d;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    margin: 0;
}

/* 상품 정보 섹션 */
.pricing {
    padding: 5rem 0;
    background: var(--bg-light);
}

.pricing .section-title {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.pricing .section-subtitle {
    color: var(--text-gray);
    margin-bottom: 3rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-white);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    text-align: center;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    position: relative;
}

.pricing-card.featured::before {
    content: "인기";
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-header {
    margin-bottom: 2rem;
}

.pricing-title {
    color: var(--text-dark);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.original-price {
    color: var(--text-gray);
    text-decoration: line-through;
    font-size: 1rem;
}

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

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

.pricing-period {
    color: var(--text-gray);
    font-size: 0.9rem;
}

.pricing-features {
    margin-bottom: 2rem;
}

.pricing-feature {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-gray);
}

.feature-icon {
    font-size: 1rem;
}

.feature-text {
    font-size: 0.9rem;
}

.pricing-cta {
    margin-top: auto;
}

.btn-pricing {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

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

/* 플로팅 CTA 버튼 */
.floating-cta {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
}

.floating-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    transition: all 0.3s ease;
    animation: pulse 2s infinite;
}

.floating-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.floating-icon {
    font-size: 1.2rem;
}

.floating-text {
    font-size: 0.95rem;
    white-space: nowrap;
}

@keyframes pulse {
    0% {
        box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    }
    50% {
        box-shadow: 0 4px 12px rgba(37, 99, 235, 0.5);
    }
    100% {
        box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    }
}

/* 로딩 및 빈 상태 */
.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-gray);
    font-size: 1.1rem;
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-gray);
}

.empty-state .icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

/* 햄버거 메뉴 */
.hamburger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.hamburger-line {
    width: 100%;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: all 0.3s ease;
    transform-origin: center;
}

.hamburger-menu.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.hamburger-menu.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger-menu.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* 모바일 메뉴 */
.mobile-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-white);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    z-index: 1002;
    border-top: 1px solid var(--border-color);
    pointer-events: none;
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.mobile-menu-link {
    display: block;
    padding: 1rem 2rem;
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: background 0.3s;
    border-bottom: 1px solid var(--border-color);
}

.mobile-menu-link:hover {
    background: var(--bg-light);
}

.mobile-btn-login {
    color: var(--primary-color) !important;
    font-weight: 600 !important;
}

.mobile-btn-signup {
    background: var(--primary-color);
    color: white !important;
    text-align: center;
    font-weight: 600 !important;
}

/* 반응형 디자인 추가 */
@media (max-width: 768px) {
    .nav-right {
        display: none;
    }

    .hamburger-menu {
        display: flex;
    }

    .free-service-info,
    .pricing-info,
    .target-user-info {
        margin: 1.5rem 0;
        padding: 1rem;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .pricing-card {
        padding: 1.5rem;
    }

    .pricing-title {
        font-size: 1.3rem;
    }

    .floating-cta {
        bottom: 1rem;
        right: 1rem;
    }

    .floating-btn {
        padding: 0.75rem 1.25rem;
    }

    .floating-text {
        font-size: 0.9rem;
    }
}