/* CSS 변수 - DACHE 앱 컬러 팔레트 기반 */
:root {
    /* 브랜드 메인 컬러 */
    --primary-color: #F28B6F; /* sunsetCoral - 브랜드 메인 */
    --primary-dark: #E8758F; /* gardenRose - 어두운 톤 */
    --primary-light: #FFE3D3; /* primary100 - 밝은 톤 */
    --primary-300: #FFBFA3; /* primary300 - 중간 톤 */
    
    /* 보조 컬러 */
    --secondary-color: #00C896; /* brandSecondary/forestGreen */
    --accent-color: #FF6F61; /* accentCoral */
    --ocean-blue: #0099FF; /* oceanBlue */
    --wisdom-purple: #8F5AFF; /* wisdomPurple */
    --sunshine-yellow: #FFE066; /* sunshineYellow */
    --sunrise-pink: #FFB6B9; /* sunrisePink */
    
    /* 상태 컬러 */
    --success-color: #4CAF50; /* success */
    --warning-color: #FFC107; /* warning */
    --error-color: #E53935; /* error */
    
    /* 텍스트 컬러 */
    --text-primary: #111827; /* textPrimary */
    --text-secondary: #6B7280; /* textSecondary */
    --text-muted: #9CA3AF; /* textTertiary */
    
    /* 배경 컬러 */
    --bg-primary: #FFFFFF; /* surfacePrimary */
    --bg-secondary: #F9FAFB; /* surfaceLight */
    --bg-tertiary: #F1F5F9; /* surfaceSecondary */
    --bg-subtle: #E5E7EB; /* surfaceSubtle */
    
    /* 다크 모드 배경 */
    --bg-primary-dark: #23272F; /* neutral700 */
    --bg-secondary-dark: #222222; /* modernBlack */
    
    /* 보더 컬러 */
    --border-color: #E5E7EB; /* borderDefault */
    --border-light: #F3F4F6; /* neutral100 */
    --border-dark: #3B3B3B; /* borderDefaultDark */
    
    /* 그림자 */
    --shadow-sm: 0 1px 2px 0 rgb(242 139 111 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(242 139 111 / 0.1), 0 2px 4px -2px rgb(242 139 111 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(242 139 111 / 0.1), 0 4px 6px -4px rgb(242 139 111 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(242 139 111 / 0.1), 0 8px 10px -6px rgb(242 139 111 / 0.1);
    
    /* 둥근 모서리 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* 전환 효과 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 다크 모드 */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #F9FAFB;
        --text-secondary: #D1D5DB; /* neutral300 */
        --text-muted: #9CA3AF; /* neutral400 */
        
        --bg-primary: #23272F; /* neutral700 */
        --bg-secondary: #222222; /* modernBlack */
        --bg-tertiary: #3B3B3B; /* borderDefaultDark */
        
        --border-color: #3B3B3B; /* borderDefaultDark */
        --border-light: #4B5563;
    }
}

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

html {
    scroll-behavior: smooth;
    scroll-snap-type: y proximity;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    scroll-snap-type: y proximity;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* 로딩 스크린 */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
    color: white;
}

.loading-logo {
    margin-bottom: 2rem;
}

.loading-logo img {
    filter: brightness(0) invert(1); /* White logo on dark background */
    transition: transform var(--transition-normal);
    border-radius: var(--radius-lg); /* Add rounded corners for symbol */
}

.loading-logo img:hover {
    transform: scale(1.05);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 헤더 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: auto;
    transition: transform var(--transition-fast);
    border-radius: var(--radius-md);
    max-width: 120px;
}

.logo img:hover {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width var(--transition-fast);
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

/* 히어로 섹션 */
.hero {
    position: relative;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    scroll-snap-align: start;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.3;
    animation: float 6s ease-in-out infinite;
}

.orb-1 {
    width: 300px;
    height: 300px;
    background: linear-gradient(45deg, var(--sunshine-yellow), var(--accent-color));
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 200px;
    height: 200px;
    background: linear-gradient(45deg, var(--secondary-color), var(--ocean-blue));
    top: 60%;
    right: 20%;
    animation-delay: 2s;
}

.orb-3 {
    width: 250px;
    height: 250px;
    background: linear-gradient(45deg, var(--wisdom-purple), var(--sunrise-pink));
    bottom: 20%;
    left: 30%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: 0.5rem 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.highlight {
    background: linear-gradient(135deg, var(--sunshine-yellow), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: var(--sunshine-yellow);
    font-weight: 700;
}

.hero-description {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.7;
    max-width: 500px;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

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

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--sunshine-yellow);
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-top: 0.25rem;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-glow {
    box-shadow: 0 0 20px rgba(242, 139, 111, 0.3);
}

.btn-glow:hover {
    box-shadow: 0 0 30px rgba(242, 139, 111, 0.5);
}

.btn-ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: scale(0);
    animation: ripple 0.6s linear;
    pointer-events: none;
}

@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-icon {
    margin-right: 0.5rem;
    font-size: 1.125rem;
}

/* 폰 목업 */
.phone-mockup {
    position: relative;
    width: 300px;
    height: 600px;
    margin: 0 auto;
}

.phone-frame {
    width: 100%;
    height: 100%;
    background: linear-gradient(145deg, #1f2937, #374151);
    border-radius: 40px;
    padding: 8px;
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    position: relative;
}

.phone-notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 25px;
    background: #000;
    border-radius: 0 0 15px 15px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #f8fafc;
    border-radius: 32px;
    overflow: hidden;
    position: relative;
}

.app-preview {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.app-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    padding: 2rem 1rem 1rem;
    color: white;
}

.app-status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.status-icons {
    display: flex;
    gap: 0.25rem;
}

.app-content {
    flex: 1;
    padding: 1.5rem;
    background: #f8fafc;
}

.question-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
}

.question-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-lg);
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.question-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.question-meta {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid white;
    border-bottom: 2px solid white;
    transform: rotate(45deg);
}

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

/* 섹션 공통 */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* 기능 섹션 */
.features {
    padding: 100px 0;
    background: var(--bg-secondary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    scroll-snap-align: start;
}

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

.feature-card {
    background: var(--bg-primary);
    padding: 2.5rem;
    border-radius: var(--radius-2xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    margin-bottom: 1.5rem;
}

.icon-bg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: var(--radius-xl);
    font-size: 2rem;
    color: white;
    box-shadow: var(--shadow-lg);
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.feature-highlight {
    display: inline-block;
    background: linear-gradient(135deg, var(--sunshine-yellow), var(--accent-color));
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
}

/* 스크린샷 섹션 */
.screenshots {
    padding: 100px 0;
    background: var(--bg-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    scroll-snap-align: start;
}

.screenshots-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.screenshot-main {
    text-align: center;
}

.phone-mockup-large {
    width: 350px;
    height: 700px;
    margin: 0 auto;
}

.phone-frame-large {
    width: 100%;
    height: 100%;
    background: linear-gradient(145deg, #1f2937, #374151);
    border-radius: 50px;
    padding: 10px;
    box-shadow: 
        0 30px 60px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.phone-notch-large {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 140px;
    height: 30px;
    background: #000;
    border-radius: 0 0 20px 20px;
    z-index: 10;
}

.phone-screen-large {
    width: 100%;
    height: 100%;
    background: #f8fafc;
    border-radius: 40px;
    overflow: hidden;
    position: relative;
}

.app-screenshot-main {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.screenshots-grid {
    display: grid;
    gap: 2rem;
}

.screenshot-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    transition: all var(--transition-normal);
}

.screenshot-item:hover {
    transform: translateX(10px);
    background: var(--bg-primary);
    box-shadow: var(--shadow-md);
}

.screenshot-card {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    flex-shrink: 0;
}

.screenshot-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    font-size: 1.5rem;
}

.screenshot-placeholder p {
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

.screenshot-item h4 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.screenshot-item p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* 다운로드 섹션 */
.download {
    position: relative;
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
    scroll-snap-align: start;
}

.download-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.orb-4 {
    width: 400px;
    height: 400px;
    background: linear-gradient(45deg, var(--sunshine-yellow), var(--accent-color));
    top: -100px;
    right: -100px;
    animation-delay: 1s;
}

.orb-5 {
    width: 300px;
    height: 300px;
    background: linear-gradient(45deg, var(--secondary-color), var(--ocean-blue));
    bottom: -50px;
    left: -50px;
    animation-delay: 3s;
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.download-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-2xl);
    padding: 3rem;
    text-align: center;
}

.download-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.download-card h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.download-card p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.download-note {
    font-size: 0.875rem;
    opacity: 0.7;
    margin-top: 1rem;
}

.download-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.download-feature {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.125rem;
}

.feature-check {
    width: 24px;
    height: 24px;
    background: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.875rem;
    font-weight: 700;
    flex-shrink: 0;
}

/* 푸터 */
.footer {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 80px 0 40px;
    margin-top: 60px;
    scroll-snap-align: start;
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-weight: 700;
}

.footer-section p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

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

.footer-logo img {
    height: auto;
    transition: transform var(--transition-fast);
    border-radius: var(--radius-sm);
    max-width: 120px;
}

.footer-logo img:hover {
    transform: scale(1.05);
}

.footer-section a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--primary-color);
}

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

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    font-size: 1.25rem;
    transition: all var(--transition-fast);
    text-decoration: none;
    color: var(--text-secondary);
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.social-link img {
    width: 20px;
    height: 20px;
    filter: grayscale(1);
    transition: filter var(--transition-fast);
    display: block;
}

.social-link:hover img {
    filter: grayscale(0) brightness(0) invert(1);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    text-align: center;
    color: var(--text-muted);
}

/* 토스트 알림 */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-xl);
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    z-index: 10000;
}

.toast.show {
    transform: translateX(0);
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.toast-message {
    color: var(--text-primary);
    font-weight: 500;
}

/* 반응형 */
@media (max-width: 1024px) {
    .screenshots-showcase {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .download-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 3rem;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .screenshots-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .phone-mockup,
    .phone-mockup-large {
        transform: scale(0.8);
    }
    
    .logo img {
        max-width: 100px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    .download-card {
        padding: 2rem 1.5rem;
    }
    
    .logo img {
        max-width: 80px;
    }
}

/* 애니메이션 */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

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

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

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

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

/* 섹션 스크롤 고정 */
section {
    scroll-snap-align: start;
    min-height: 100vh;
    position: relative;
}

section.active {
    /* 활성 섹션 표시 (선택사항) */
}