/* ========================================
   토스 스타일 디자인 시스템
   ======================================== */

/* 리셋 & 기본 설정 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 토스 브랜드 컬러 */
    --primary-blue: #3182F6;
    --primary-blue-dark: #1B64DA;
    --primary-blue-light: #EBF4FF;
    
    /* 세컨더리 컬러 */
    --teal: #00C7B2;
    --teal-dark: #009F8B;
    --brown: #8B7355;
    --brown-dark: #6B5744;
    
    /* 그레이 스케일 */
    --gray-900: #191F28;
    --gray-800: #333D4B;
    --gray-700: #4E5968;
    --gray-600: #6B7684;
    --gray-500: #8B95A1;
    --gray-400: #B0B8C1;
    --gray-300: #D1D6DB;
    --gray-200: #E5E8EB;
    --gray-100: #F2F4F6;
    --gray-50: #F9FAFB;
    
    /* 시맨틱 컬러 */
    --success: #00C853;
    --warning: #FFA726;
    --error: #FF6B6B;
    --info: #3182F6;
    
    /* 배경 */
    --bg-white: #FFFFFF;
    --bg-gray: #F9FAFB;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* 그림자 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* 타이포그래피 */
    --font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* 애니메이션 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* 간격 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    
    /* 반경 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
}

body {
    font-family: var(--font-family);
    color: var(--gray-900);
    background-color: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ========================================
   네비게이션 - 토스 스타일
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all var(--transition-base);
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    letter-spacing: -0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-blue);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.nav-link:hover::after {
    transform: scaleX(1);
}

.nav-cta {
    background: var(--primary-blue);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-base);
}

.nav-cta:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* 임시저장 배너 */
.draft-banner {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid #e0e0e0;
    z-index: 999;
    animation: slideDown 0.3s ease-out;
}

.draft-banner-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 22px 20px 12px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.draft-banner-content .material-symbols-outlined {
    font-size: 20px;
    color: #666;
    flex-shrink: 0;
}

.draft-banner-left {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
}

.draft-banner-text {
    font-size: 14px;
    color: #666;
    font-weight: 500;
}

.draft-banner-btn-delete {
    padding: 4px 10px;
    background: #9e9e9e;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.draft-banner-btn-delete:hover {
    background: #757575;
}

.draft-banner-btn {
    padding: 8px 20px;
    background: white;
    color: #3182F6;
    border: 1px solid #3182F6;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.draft-banner-btn:hover {
    background: #3182F6;
    color: white;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-100%);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-900);
    transition: all var(--transition-base);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* ========================================
   사이드 메뉴
   ======================================== */
.side-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    pointer-events: none;
}

.side-menu.active {
    pointer-events: auto;
}

.side-menu-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.side-menu.active .side-menu-overlay {
    opacity: 1;
}

.side-menu-content {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 320px;
    max-width: 85vw;
    background: white;
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.15);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
    display: flex;
    flex-direction: column;
}

.side-menu.active .side-menu-content {
    transform: translateX(0);
}

.side-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
}

.side-menu-logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
}

.side-menu-close {
    background: none;
    border: none;
    padding: var(--spacing-sm);
    cursor: pointer;
    color: var(--gray-700);
    transition: all var(--transition-fast);
    border-radius: var(--radius-md);
}

.side-menu-close:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.side-menu-nav {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-sm);
}

.side-menu-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    color: var(--gray-900);
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

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

.side-menu-item svg {
    flex-shrink: 0;
}

/* ========================================
   히어로 섹션 - 토스 스타일
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, #F9FAFB 0%, #FFFFFF 100%);
    padding: 120px var(--spacing-lg) var(--spacing-3xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(49, 130, 246, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-50px, -50px); }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: rgba(49, 130, 246, 0.1);
    color: var(--primary-blue);
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    animation: fadeInDown 0.8s ease-out;
}

.hero-title {
    font-size: clamp(40px, 6vw, 64px);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -2px;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--teal) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(16px, 2vw, 20px);
    color: var(--gray-700);
    line-height: 1.8;
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-3xl);
    animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

/* ========================================
   버튼 스타일 - 토스 스타일
   ======================================== */
.btn-primary {
    background: var(--primary-blue);
    color: white;
    border: none;
    padding: 16px 32px;
    border-radius: var(--radius-xl);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-base);
    box-shadow: 0 4px 14px 0 rgba(49, 130, 246, 0.4);
}

.btn-primary:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-4px);
    box-shadow: 0 8px 20px 0 rgba(49, 130, 246, 0.5);
}

.btn-primary:active {
    transform: translateY(-2px);
}

.btn-primary.btn-large {
    padding: 20px 40px;
    font-size: 18px;
}

.btn-secondary {
    background: white;
    color: var(--gray-900);
    border: 2px solid var(--gray-200);
    padding: 16px 32px;
    border-radius: var(--radius-xl);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
    transform: translateY(-2px);
}

/* ========================================
   통계 섹션
   ======================================== */
.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    animation: fadeInUp 0.8s ease-out 0.8s backwards;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary-blue);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--gray-600);
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--gray-200);
}

/* ========================================
   섹션 공통 스타일
   ======================================== */
section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    letter-spacing: -1px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--gray-600);
    font-weight: 400;
}

/* ========================================
   특징 섹션 - Glassmorphism
   ======================================== */
.features {
    background: linear-gradient(180deg, #FFFFFF 0%, #F9FAFB 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-slow);
    cursor: pointer;
}

.glass-card {
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px 0 rgba(31, 38, 135, 0.15);
    border-color: rgba(49, 130, 246, 0.3);
}

.feature-icon {
    margin-bottom: var(--spacing-lg);
    display: inline-flex;
}

.feature-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--gray-900);
}

.feature-description {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.7;
}

/* ========================================
   템플릿 섹션
   ======================================== */
.templates {
    background: white;
}

.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.template-card {
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
    background: white;
    box-shadow: var(--shadow-md);
}

.template-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-2xl);
}

.template-preview {
    position: relative;
    overflow: hidden;
}

.template-image {
    width: 100%;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.template-label {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    background: rgba(255, 255, 255, 0.95);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.template-info {
    padding: var(--spacing-lg);
}

.template-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.template-description {
    font-size: 14px;
    color: var(--gray-600);
}

/* ========================================
   가이드 섹션
   ======================================== */
.guide {
    background: linear-gradient(180deg, #F9FAFB 0%, #FFFFFF 100%);
}

.guide-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.guide-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.guide-step:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-xl);
}

.step-number {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary-blue);
    opacity: 0.2;
    min-width: 80px;
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.step-description {
    font-size: 16px;
    color: var(--gray-600);
}

.step-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* ========================================
   FAQ 섹션
   ======================================== */
.faq {
    background: white;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--gray-200);
    margin-bottom: var(--spacing-md);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: none;
    border: none;
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    cursor: pointer;
    text-align: left;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    color: var(--primary-blue);
}

.faq-icon {
    transition: transform var(--transition-base);
    color: var(--gray-500);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-base);
    padding: 0 var(--spacing-lg);
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.faq-answer p {
    font-size: 16px;
    color: var(--gray-700);
    line-height: 1.8;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--gray-900);
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    text-align: center;
}

.footer-logo {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

.footer-links-horizontal {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-links-horizontal a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-fast);
}

.footer-links-horizontal a:hover {
    color: white;
}

.footer-separator {
    color: var(--gray-600);
    font-size: 14px;
}

.footer-info {
    color: var(--gray-500);
    font-size: 13px;
    line-height: 1.8;
}

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

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[data-aos] {
    opacity: 0;
    transition: all 0.8s ease-out;
}

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

[data-aos="fade-up"].aos-animate {
    animation: fadeInUp 0.8s ease-out forwards;
}

[data-aos="fade-right"].aos-animate {
    animation: fadeInRight 0.8s ease-out forwards;
}

[data-aos="zoom-in"].aos-animate {
    animation: zoomIn 0.8s ease-out forwards;
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ========================================
   반응형 디자인
   ======================================== */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }

    .nav-actions {
        gap: var(--spacing-sm);
    }

    .nav-cta {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .draft-banner {
        top: 56px;
    }
    
    .draft-banner-content {
        padding: 18px 16px 10px 16px;
        font-size: 13px;
        gap: 10px;
    }
    
    .draft-banner-left {
        gap: 8px;
    }
    
    .draft-banner-text {
        font-size: 13px;
    }
    
    .draft-banner-btn-delete {
        padding: 4px 8px;
        font-size: 10px;
    }
    
    .draft-banner-btn {
        padding: 6px 14px;
        font-size: 12px;
    }
    
    .hero {
        padding: 100px var(--spacing-md) var(--spacing-2xl);
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .stat-divider {
        width: 100%;
        height: 1px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .templates-grid {
        grid-template-columns: 1fr;
    }
    
    .guide-step {
        flex-direction: column;
        text-align: center;
    }
    
    .step-number {
        min-width: auto;
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .btn-primary, .btn-secondary {
        width: 100%;
        justify-content: center;
    }
}