:root {
    --primary-color: #10b981; /* Emerald */
    --primary-hover: #059669;
    --text-main: #1f2937;
    --text-muted: #4b5563;
    --bg-main: #ffffff;
    --bg-secondary: #f3f4f6;
    --card-bg: #ffffff;
    --border-color: #e5e7eb;
    --font-family: 'Inter', sans-serif;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--text-main);
    background-color: var(--bg-main);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navbar */
.navbar {
    background-color: var(--bg-main);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover, .nav-links a.active {
    color: var(--primary-color);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background-color: var(--text-main);
    transition: var(--transition);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(16, 185, 129, 0.2);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 8px -1px rgba(16, 185, 129, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--text-main);
    background-color: var(--bg-secondary);
}

/* Hero Section */
.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, rgba(255, 255, 255, 0) 100%);
}

.hero-container {
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-content {
    flex: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--text-main);
    letter-spacing: -1px;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 540px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.mockup-placeholder {
    width: 300px;
    height: 600px;
    background-color: var(--bg-main);
    border: 12px solid #111;
    border-radius: 40px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.mockup-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 24px;
    background-color: #111;
    border-bottom-left-radius: 12px;
    border-bottom-right-radius: 12px;
}

.mockup-content {
    text-align: center;
    color: var(--primary-color);
}

.mockup-content h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

/* Features */
.features {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    font-size: 2.25rem;
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    background-color: var(--card-bg);
    padding: 40px 32px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-muted);
}

/* Pages Layout */
.page-header {
    background-color: var(--bg-secondary);
    padding: 60px 0;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.page-header p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.content-section {
    padding: 60px 0;
    flex: 1;
}

.document-container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--card-bg);
    padding: 48px;
    border-radius: 16px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
}

.document-container h2 {
    font-size: 1.75rem;
    margin-top: 40px;
    margin-bottom: 16px;
    color: var(--text-main);
    border-bottom: 2px solid var(--bg-secondary);
    padding-bottom: 8px;
}

.document-container h2:first-child {
    margin-top: 0;
}

.document-container h3 {
    font-size: 1.25rem;
    margin-top: 24px;
    margin-bottom: 12px;
}

.document-container p {
    margin-bottom: 16px;
    color: var(--text-muted);
}

.document-container ul, .document-container ol {
    margin-bottom: 16px;
    padding-left: 24px;
    color: var(--text-muted);
}

.document-container li {
    margin-bottom: 8px;
}

.document-container a {
    color: var(--primary-color);
    text-decoration: none;
}

.document-container a:hover {
    text-decoration: underline;
}

.alert-box {
    background-color: rgba(16, 185, 129, 0.1);
    border-left: 4px solid var(--primary-color);
    padding: 16px 20px;
    margin-bottom: 24px;
    border-radius: 0 8px 8px 0;
}

.alert-box h4 {
    color: var(--primary-hover);
    margin-bottom: 8px;
}

.alert-box p {
    margin-bottom: 0;
    color: var(--text-main);
}

.alert-box.danger {
    background-color: rgba(239, 68, 68, 0.1);
    border-left-color: #ef4444;
}

.alert-box.danger h4 {
    color: #dc2626;
}

/* Footer */
footer {
    background-color: var(--bg-main);
    border-top: 1px solid var(--border-color);
    padding: 40px 0 24px;
    margin-top: auto;
}

.footer-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
}

.footer-brand h3 {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
}

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

.footer-copyright {
    width: 100%;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--bg-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background-color: var(--bg-main);
        flex-direction: column;
        padding: 24px;
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-links.show {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        margin: 0 auto 32px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .mockup-placeholder {
        width: 260px;
        height: 520px;
    }
    
    .document-container {
        padding: 24px;
    }
    
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 12px;
    }
}