@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #0f172a;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #334155;
    --text-heading: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 1px 3px 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-hover: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--bg-color);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-heading);
    font-weight: 700;
    line-height: 1.3;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
header {
    background: var(--card-bg);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    flex-direction: column;
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--primary);
    margin-bottom: -4px;
}

.logo p {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: var(--text-heading);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.5rem 0;
    position: relative;
}

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

nav a:hover::after {
    width: 100%;
}

/* Ad Container */
.ad-container {
    background: var(--border-color);
    padding: 1rem;
    text-align: center;
    margin: 2.5rem auto;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    max-width: fit-content;
    border: 1px dashed #cbd5e1;
}

.ad-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #94a3b8;
    margin-bottom: 0.5rem;
}

.ad-content {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f1f5f9;
    border-radius: var(--radius-sm);
}

/* Main Content */
main {
    min-height: 60vh;
    padding: 2rem 0 4rem;
}

/* Page Title */
.page-title {
    text-align: center;
    margin: 2rem 0 3rem;
    padding: 3rem 2rem;
    background: var(--secondary);
    color: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.page-title h2 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.page-title p {
    color: #cbd5e1;
    font-size: 1.1rem;
}

/* Button */
.btn-primary {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 30px;
    font-weight: 600;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.39);
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

/* Footer */
footer {
    background: var(--secondary);
    color: #f1f5f9;
    padding: 4rem 0 2rem;
}

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

.footer-section h4 {
    color: white;
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.75rem;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary);
}

.footer-logo {
    font-size: 1.75rem;
    font-weight: 800;
    color: white;
    margin-bottom: 1rem;
    display: block;
}

.footer-section p {
    color: #94a3b8;
    font-size: 0.95rem;
    max-width: 300px;
}

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

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: #94a3b8;
    transition: var(--transition);
}

.footer-section a:hover {
    color: white;
    padding-left: 4px;
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #334155;
    color: #64748b;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 992px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        height: auto;
        padding: 1rem 0;
        gap: 1rem;
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }

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