/* Main CSS - Optimized for Performance & SEO */
:root {
    --primary: #2a5298;
    --primary-light: #3b6bc9;
    --secondary: #38a169;
    --accent: #ed8936;
    --dark: #1a202c;
    --light: #f7fafc;
    --gray-100: #f8f9fa;
    --gray-300: #e2e8f0;
    --gray-500: #a0aec0;
    --gray-700: #4a5568;
    --success: #38a169;
    --warning: #ed8936;
    --danger: #e53e3e;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--light);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--dark);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2rem;
    margin-top: 2.5rem;
}

h3 {
    font-size: 1.5rem;
    margin-top: 2rem;
}

/* Header & Navigation */
.main-header {
    background: white;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo a {
    text-decoration: none;
    color: var(--dark);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.logo-domain {
    font-size: 0.9rem;
    color: var(--gray-500);
}

.tagline {
    font-size: 0.85rem;
    color: var(--secondary);
    margin-top: 0.25rem;
}

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

.nav-list a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    transition: color 0.3s;
    padding: 0.5rem 0;
    position: relative;
}

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

.nav-list a.active:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary);
}

.new-badge {
    background: var(--secondary);
    color: white !important;
    padding: 0.25rem 0.75rem !important;
    border-radius: 20px;
    font-size: 0.8rem;
}

.apply-btn {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white !important;
    padding: 0.75rem 1.5rem !important;
    border-radius: var(--radius);
    transition: all 0.3s;
}

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

/* Article Content */
.article-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius);
    text-align: center;
    border: 2px solid var(--gray-300);
    transition: all 0.3s;
}

.stat-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--gray-700);
    font-size: 0.9rem;
}

/* CTA Boxes */
.cta-box {
    background: linear-gradient(135deg, #f0fff4, #e6fffa);
    border: 2px solid var(--secondary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin: 3rem 0;
    text-align: center;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    margin: 1rem 0;
    transition: all 0.3s;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.affiliate-tag {
    background: var(--accent);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    margin-left: 0.5rem;
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    box-shadow: var(--shadow);
}

.data-table th {
    background: var(--primary);
    color: white;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--gray-300);
}

.data-table tr:hover {
    background: var(--gray-100);
}

/* Forms */
.referral-form {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    margin: 2rem 0;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
}

/* Footer */
.site-footer {
    background: var(--dark);
    color: white;
    padding: 3rem 0;
    margin-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: var(--gray-300);
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: 2rem;
    text-align: center;
    color: var(--gray-300);
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    .nav-list {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow-lg);
    }
    
    .nav-list.active {
        display: flex;
    }
    
    .mobile-toggle {
        display: block;
        background: none;
        border: none;
        cursor: pointer;
    }
    
    .mobile-toggle span {
        display: block;
        width: 25px;
        height: 3px;
        background: var(--dark);
        margin: 5px 0;
        transition: 0.3s;
    }
}

/* Print Styles */
@media print {
    .announcement,
    .main-nav,
    .cta-box,
    .site-footer {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    a {
        color: var(--dark);
        text-decoration: none;
    }
    
    .article-content {
        max-width: none;
        padding: 0;
    }
}