/* Font Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Noto+Sans+KR:wght@400;500;700;900&display=swap');

:root {
    --primary: #4F46E5;
    --primary-dark: #4338ca;
    --secondary: #7C3AED;
    --accent: #F59E0B;
    --text-main: #1F2937;
    --text-sub: #4B5563;
    --bg-light: #F9FAFB;
    --white: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(255, 255, 255, 0.3);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

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

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }

    100% {
        transform: translateY(0px);
    }
}

@keyframes gradient {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(229, 231, 235, 0.5);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

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

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.logo i {
    font-size: 1.4rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(79, 70, 229, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid #E5E7EB;
}

.btn-outline:hover {
    border-color: var(--primary);
    background: #F3F4F6;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 10rem 1.5rem 8rem;
    overflow: hidden;
    background: radial-gradient(circle at top right, rgba(124, 58, 237, 0.1), transparent 40%),
        radial-gradient(circle at bottom left, rgba(79, 70, 229, 0.1), transparent 40%);
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 10;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #111827 0%, #4B5563 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
    animation: fadeInUp 0.8s ease-out;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-sub);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.hero .btn {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* Features Section */
.features {
    padding: 6rem 1.5rem;
    background: #ffffff;
}

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

.section-header {
    text-align: center;
    margin-bottom: 5rem;
    animation: fadeInUp 1s ease-out;
}

.section-label {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: #EEF2FF;
    color: var(--primary);
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: #111827;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-sub);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
}

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 24px;
    border: 1px solid #F3F4F6;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: #E5E7EB;
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #EEF2FF 0%, #F5F3FF 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(3deg);
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #111827;
}

.feature-card p {
    color: var(--text-sub);
    line-height: 1.7;
    font-size: 1rem;
}

/* Pricing Section */
.pricing {
    padding: 6rem 1.5rem;
    background: #F9FAFB;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
    align-items: center;
}

.pricing-card {
    background: white;
    padding: 3rem;
    border-radius: 24px;
    box-shadow: var(--shadow-md);
    border: 1px solid #F3F4F6;
    transition: all 0.3s ease;
}

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

.pricing-card.featured {
    padding: 4rem 3rem;
    background: #111827;
    color: white;
    position: relative;
    box-shadow: var(--shadow-xl);
    z-index: 10;
}

.pricing-card.featured:hover {
    transform: translateY(-8px) scale(1.02);
}

.featured-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 700;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.pricing-name {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.featured .pricing-name {
    color: #818CF8;
}

.pricing-price {
    font-size: 3.5rem;
    font-weight: 800;
    color: #111827;
    margin: 1.5rem 0;
    letter-spacing: -0.02em;
}

.featured .pricing-price {
    color: white;
}

.pricing-price .period {
    font-size: 1.125rem;
    color: #9CA3AF;
    font-weight: 500;
}

.pricing-features {
    list-style: none;
    margin: 2.5rem 0;
}

.pricing-features li {
    padding: 0.75rem 0;
    color: var(--text-sub);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1rem;
}

.featured .pricing-features li {
    color: #D1D5DB;
}

.pricing-features li i {
    color: #10B981;
    font-size: 1.25rem;
}

.pricing-card .btn {
    width: 100%;
    justify-content: center;
    padding: 1rem;
}

/* CTA Section */
.cta {
    padding: 8rem 1.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
    margin: 0 auto;
}

.cta h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.cta p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 2.5rem;
}

/* Footer */
.footer {
    background: #111827;
    color: #9CA3AF;
    padding: 4rem 1.5rem;
    text-align: center;
}

.footer-content p {
    margin-bottom: 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    /* Header */
    .header-content {
        padding: 0 1rem;
    }
    
    .header-actions {
        gap: 0.5rem;
    }
    
    .header .btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    /* Hero */
    .hero {
        padding: 6rem 1rem 4rem;
    }
    
    .hero h1 {
        font-size: 2rem;
        line-height: 1.2;
    }
    
    .hero p {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
        gap: 0.75rem;
    }
    
    .hero .btn {
        width: 100%;
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
    
    /* Features */
    .features {
        padding: 4rem 1rem;
    }
    
    .section-header {
        margin-bottom: 3rem;
    }
    
    .section-title {
        font-size: 1.875rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    /* Pricing */
    .pricing {
        padding: 4rem 1rem;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .pricing-card {
        padding: 2rem 1.5rem;
    }
    
    .pricing-card.featured {
        padding: 2.5rem 1.5rem;
        transform: scale(1);
    }
    
    .pricing-card.featured:hover {
        transform: translateY(-8px);
    }
    
    .pricing-price {
        font-size: 2.5rem;
    }
    
    /* CTA */
    .cta {
        padding: 4rem 1rem;
    }
    
    .cta h2 {
        font-size: 1.875rem;
    }
    
    .cta p {
        font-size: 1rem;
    }
    
    .cta .btn {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
    
    /* Footer */
    .footer {
        padding: 3rem 1rem;
    }
}