:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --bg-light: #f8f9fa;
    --text-main: #333;
    --text-muted: #666;
    --border-color: #e0e0e0;
    --white: #ffffff;
    --max-width: 1100px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--white);
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Layout */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Top Bar */
.top-bar {
    background-color: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
    padding: 8px 0;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: center;
}

/* Header & Nav */
header {
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
    background: var(--white);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 25px;
}

.nav-links a {
    color: var(--secondary-color);
    font-weight: 500;
    font-size: 0.95rem;
}

.nav-links a:hover {
    color: var(--accent-color);
}

/* Hero Section */
.hero {
    padding: 80px 0;
    background: linear-gradient(to bottom right, #ffffff, #f0f4f8);
}

.hero-split {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.btn-group {
    display: flex;
    gap: 15px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

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

.btn-outline {
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
}

.btn-outline:hover {
    background-color: var(--accent-color);
    color: var(--white);
}

.summary-card {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    border: 1px solid var(--border-color);
}

.summary-card h3 {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--primary-color);
    border-bottom: 2px solid var(--accent-color);
    display: inline-block;
    padding-bottom: 5px;
}

.summary-list {
    list-style: none;
}

.summary-list li {
    padding: 10px 0;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    align-items: center;
    font-size: 0.95rem;
}

.summary-list li:last-child {
    border-bottom: none;
}

.summary-list li::before {
    content: "✓";
    color: var(--accent-color);
    margin-right: 10px;
    font-weight: bold;
}

/* Sections */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

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

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 30px;
}

.card {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.card h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.card p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Reference Section */
.reference-section {
    background-color: var(--bg-light);
    text-align: center;
}

.reference-box {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px;
    background: var(--white);
    border-left: 4px solid var(--accent-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.03);
}

/* Process Steps */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--accent-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-weight: bold;
}

/* Content Pages */
.page-header {
    padding: 60px 0;
    background: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 60px;
}

.content-area {
    max-width: 800px;
    margin: 0 auto;
    padding-bottom: 80px;
}

.content-area h2 {
    margin: 40px 0 20px;
    color: var(--primary-color);
}

.content-area p {
    margin-bottom: 20px;
}

.content-area ul {
    margin-bottom: 20px;
    padding-left: 20px;
}

.content-area li {
    margin-bottom: 10px;
}

.last-updated {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 40px;
    font-style: italic;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: #ecf0f1;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--white);
}

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

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #bdc3c7;
    font-size: 0.9rem;
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    font-size: 0.85rem;
    color: #95a5a6;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-split {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .btn-group {
        justify-content: center;
    }
    
    .nav-links {
        display: none; /* Simple mobile menu would go here */
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
}