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

:root {
    --primary-color: #10b981;
    --primary-dark: #059669;
    --secondary-color: #3b82f6;
    --accent-color: #8b5cf6;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --gradient-1: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
    --gradient-2: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    --gradient-3: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --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);
}

body {
    font-family: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

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

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--primary-color);
    stroke-width: 2;
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s;
    font-size: 0.95rem;
}

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

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: 1rem 0;
    }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: var(--shadow-md);
}

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

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Hero Section */
.hero {
    margin-top: 80px;
    padding: 6rem 0 0;
    background: linear-gradient(180deg, #ffffff 0%, #f0fdf4 50%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    padding: 2rem 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #dbeafe 0%, #d1fae5 100%);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    color: var(--primary-dark);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.badge-icon {
    width: 16px;
    height: 16px;
    color: var(--primary-color);
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-subtitle strong {
    color: var(--primary-color);
    font-weight: 700;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.hero-image {
    position: relative;
}

.hero-img {
    width: 100%;
    height: auto;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-2xl);
    animation: float 6s ease-in-out infinite;
}

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

.floating-card {
    position: absolute;
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: float 4s ease-in-out infinite;
    border: 1px solid var(--border-color);
}

.floating-icon {
    width: 32px;
    height: 32px;
    color: var(--primary-color);
    stroke-width: 2;
}

.floating-card span {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.card-1 {
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.card-2 {
    bottom: 20%;
    right: -10%;
    animation-delay: 1s;
}

.card-3 {
    top: 50%;
    right: -5%;
    animation-delay: 2s;
}

.hero-wave {
    margin-top: 4rem;
    color: var(--bg-light);
}

.hero-wave {
    width: 100%;
    height: auto;
    display: block;
}

.hero-wave .wave-img {
    width: 100%;
    height: auto;
    display: block;
}

/* Section Styles */
section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 1rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
}

/* Features Section */
.features {
    background: var(--bg-white);
}

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

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: transform 0.3s;
}

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

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

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-1);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon .icon {
    width: 36px;
    height: 36px;
    color: white;
    stroke-width: 2;
}

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

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

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.feature-list li {
    color: var(--text-secondary);
    font-size: 0.95rem;
    position: relative;
    padding-left: 1.5rem;
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

/* Security Section */
.security {
    background: linear-gradient(135deg, #f0fdf4 0%, #ffffff 100%);
}

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

.security-text .section-header {
    text-align: left;
    margin-bottom: 3rem;
}

.security-text .section-title {
    text-align: left;
    font-size: 2.5rem;
}

.security-text .section-subtitle {
    text-align: left;
    margin: 0;
}

.security-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.security-item {
    display: flex;
    gap: 1.5rem;
    background: white;
    padding: 1.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
}

.security-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(8px);
}

.security-icon {
    width: 48px;
    height: 48px;
    color: var(--primary-color);
    stroke-width: 2;
    flex-shrink: 0;
}

.security-item h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.security-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.security-image {
    position: relative;
}

.security-img {
    width: 100%;
    height: auto;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-xl);
}

/* Enterprise Features Section */
.enterprise-features {
    background: var(--bg-white);
}

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

.enterprise-image {
    position: relative;
}

.enterprise-img {
    width: 100%;
    height: auto;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-xl);
}

.enterprise-text h2 {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.enterprise-intro {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.comparison-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.comparison-item {
    background: white;
    padding: 1.5rem;
    border-radius: 1rem;
    border: 2px solid var(--border-color);
    transition: all 0.3s;
}

.comparison-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.comparison-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.check-icon {
    width: 24px;
    height: 24px;
    color: var(--primary-color);
    stroke-width: 2.5;
    flex-shrink: 0;
}

.comparison-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.comparison-item p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-left: 2.5rem;
}

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

.pricing-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    padding: 2.5rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border-color);
    position: relative;
    transition: all 0.3s;
}

.pricing-card.featured {
    border-color: var(--primary-color);
    transform: scale(1.05);
    box-shadow: var(--shadow-2xl);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-1);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 700;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

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

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

.price-amount {
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-period {
    font-size: 1rem;
    color: var(--text-secondary);
}

.price-savings {
    text-align: center;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.1rem;
}

.pricing-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
}

.icon-check {
    width: 20px;
    height: 20px;
    color: var(--primary-color);
    stroke-width: 3;
    flex-shrink: 0;
}

.icon-x {
    width: 20px;
    height: 20px;
    color: #ef4444;
    stroke-width: 3;
    flex-shrink: 0;
}

.pricing-cta {
    width: 100%;
    text-align: center;
}

/* CTA Section */
.cta {
    background: var(--gradient-1);
    color: white;
    text-align: center;
    padding: 6rem 0;
}

.cta-content h2 {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.cta-content > p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.cta-form {
    display: flex;
    gap: 1rem;
    max-width: 600px;
    margin: 0 auto 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.cta-form input {
    flex: 1;
    min-width: 300px;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-family: inherit;
}

.cta-form input:focus {
    outline: 2px solid white;
    outline-offset: 2px;
}

.cta-note {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-logo-icon {
    width: 40px;
    height: 40px;
    color: var(--primary-color);
    stroke-width: 2;
    margin-bottom: 1rem;
}

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

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

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

.footer-column li {
    margin-bottom: 0.5rem;
}

.footer-column a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .floating-card {
        display: none;
    }

    .security-content,
    .enterprise-content {
        grid-template-columns: 1fr;
    }

    .security-text .section-header,
    .security-text .section-title,
    .security-text .section-subtitle {
        text-align: center;
    }

    .pricing-comparison {
        grid-template-columns: 1fr;
    }

    .pricing-card.featured {
        transform: scale(1);
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hamburger {
        display: flex;
    }

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

    .section-title {
        font-size: 2rem;
    }

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

    .cta-form {
        flex-direction: column;
    }

    .cta-form input {
        width: 100%;
    }

    .cta-content h2 {
        font-size: 2rem;
    }
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}

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

.feature-card,
.security-item,
.comparison-item {
    animation: fadeInUp 0.6s ease-out;
}

/* Footer Address Section */
.footer-address-section {
    width: 100%;
    padding: 2rem 0;
    margin-top: 1rem;
}

.footer-contact-address {
    display: flex;
    flex-direction: row;
    gap: 4rem;
    flex-wrap: wrap;
    align-items: flex-start;
}

.contact-item {
    color: rgba(255, 255, 255, 0.7);
    flex: 0 0 auto;
    min-width: 250px;
}

.contact-item strong {
    display: block;
    color: white;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.contact-item p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.6;
}

.contact-item a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
}

.contact-item a:hover {
    color: white;
}

.footer-address {
    display: flex;
    flex-direction: row;
    gap: 4rem;
    flex-wrap: wrap;
    flex: 1;
}

.address-item {
    color: rgba(255, 255, 255, 0.7);
    flex: 1;
    min-width: 300px;
}

.address-item strong {
    display: block;
    color: white;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.address-item p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.7);
}

.footer-logo-icon {
    width: 40px;
    height: 40px;
    margin-bottom: 1rem;
}