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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #1f2937;
    background-color: #ffffff;
}

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

/* Color System */
:root {
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --secondary-500: #0891b2;
    --secondary-600: #0e7490;
    --accent-500: #ea580c;
    --accent-600: #dc2626;
    --success-500: #10b981;
    --warning-500: #f59e0b;
    --error-500: #ef4444;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
}

/* Typography */
h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 40px;
    text-align: center;
    color: var(--gray-900);
    letter-spacing: -0.025em;
}

h2 {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 32px;
    color: var(--primary-600);
    position: relative;
    padding-bottom: 16px;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-600), var(--primary-400));
    border-radius: 2px;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 20px;
    color: var(--gray-900);
}

h4 {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 16px;
    color: var(--gray-900);
}

p {
    font-size: 1.125rem;
    line-height: 1.7;
    margin-bottom: 24px;
    color: var(--gray-600);
}

/* Header */
.header {
    background-color: #ffffff;
    border-bottom: 1px solid var(--gray-200);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

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

.logo-section {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 40px;
    height: 40px;
    transition: transform 0.2s ease;
}

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

.brand-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    text-decoration: none;
    transition: color 0.2s ease;
}

.brand-name:hover {
    color: var(--primary-600);
}

/* Main Content */
.main-content {
    padding: 80px 0 100px;
    min-height: 70vh;
}

.content-section {
    margin-bottom: 60px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.content-section:last-child {
    margin-bottom: 0;
}

/* About page specific styles */
.svg-illustration {
    display: flex;
    justify-content: center;
    margin: 40px 0;
    padding: 40px;
    background: var(--gray-50);
    border-radius: 16px;
}

.svg-illustration svg {
    max-width: 100%;
    height: auto;
}

.content-image {
    width: 100%;
    max-width: 600px;
    height: 350px;
    object-fit: cover;
    border-radius: 16px;
    margin: 40px auto;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    display: block;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.content-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.last-updated {
    font-style: italic;
    color: var(--gray-500);
    margin-bottom: 40px;
    text-align: center;
    font-size: 1rem;
    background: var(--gray-50);
    padding: 16px 24px;
    border-radius: 8px;
    border-left: 4px solid var(--primary-600);
}

/* Footer */
.footer {
    background-color: var(--gray-900);
    color: #ffffff;
    padding: 60px 0 30px;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section:first-child {
    max-width: 350px;
}

.footer-section h4 {
    color: #ffffff;
    margin-bottom: 20px;
    font-size: 1.125rem;
    font-weight: 600;
}

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

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section a {
    color: var(--gray-300);
    text-decoration: none;
    transition: color 0.2s ease;
    font-size: 1rem;
}

.footer-section a:hover {
    color: #ffffff;
}

.footer-section p {
    color: var(--gray-300);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: 30px;
    text-align: center;
    color: var(--gray-400);
}

.footer .logo-section .brand-name {
    color: #ffffff;
}

.footer .logo-section {
    margin-bottom: 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .main-content {
        padding: 60px 0 80px;
    }
    
    .content-section {
        margin-bottom: 50px;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .content-image {
        height: 300px;
        margin: 30px auto;
    }
    
    .svg-illustration {
        padding: 30px 20px;
        margin: 30px 0;
    }
}

@media (max-width: 480px) {
    .logo-section {
        gap: 8px;
    }
    
    .brand-name {
        font-size: 1.25rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .main-content {
        padding: 40px 0 60px;
    }
    
    .content-section {
        margin-bottom: 40px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .content-image {
        height: 250px;
        margin: 24px auto;
    }
    
    .svg-illustration {
        padding: 20px 15px;
        margin: 20px 0;
    }
    
    .last-updated {
        padding: 12px 16px;
        font-size: 0.9rem;
    }
}