:root {
    --primary-color: #2563eb;
    --secondary-color: #6366f1;
    --light-primary: #dbeafe;
    --dark-text: #1f2937;
    --light-text: #6b7280;
    --white: #ffffff;
    --light-gray: #f8fafc;
    --border-color: #e5e7eb;
}

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


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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.header-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.logo {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.header h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.header p {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Hero Stats */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    padding-top: 3rem;
    border-top: 1px solid rgba(255,255,255,0.2);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Navigation */
.nav-section {
    background: var(--light-gray);
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
}

.nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.nav-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    cursor: pointer;
}

.nav-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border-color: var(--primary-color);
}

.nav-icon {
    width: 50px;
    height: 50px;
    background: var(--light-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.nav-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark-text);
}

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

.use-cases-hero {
padding: 8rem 2rem 4rem;
background: linear-gradient(to bottom, var(--bg-light), white);
text-align: center;
}

.use-cases-hero-content {
max-width: 800px;
margin: 0 auto;
}

.use-cases-hero h1 {
font-size: 3rem;
font-weight: 800;
margin-bottom: 1.5rem;
}

.use-cases-hero p {
font-size: 1.25rem;
color: var(--text);
margin-bottom: 2rem;
max-width: 600px;
margin-left: auto;
margin-right: auto;
}

/* Main Content */
.main-content {
    padding: 4rem 0;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 4rem;
    margin-bottom: 4rem;
}

.content-section {
    margin-bottom: 3rem;
}

.content-section h2 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--dark-text);
    position: relative;
}

.content-section h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.content-section h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin: 2rem 0 1rem 0;
    color: var(--primary-color);
}

.content-section p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--dark-text);
    margin-bottom: 1.5rem;
}

.benefit-list {
    list-style: none;
    margin: 2rem 0;
}

.benefit-list li {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

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

.benefit-icon {
    width: 24px;
    height: 24px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.8rem;
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.benefit-content h4 {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark-text);
}

.benefit-content p {
    font-size: 0.95rem;
    color: var(--light-text);
    margin: 0;
}

/* Sidebar */
.sidebar {
    position: sticky;
    top: 6rem;
    height: fit-content;
}

.sidebar-card {
    background: var(--light-primary);
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.sidebar-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--dark-text);
}

.roi-highlight {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 2px solid var(--primary-color);
    margin-bottom: 2rem;
}

.roi-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    display: block;
}

.roi-text {
    font-size: 0.9rem;
    color: var(--light-text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Campaign Types */
.campaign-types {
    background: var(--light-gray);
    padding: 4rem 0;
    margin-top: 4rem;
}

.campaign-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.campaign-card {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.campaign-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.campaign-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.campaign-icon {
    width: 60px;
    height: 60px;
    background: var(--light-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

.campaign-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-text);
}

.campaign-card p {
    color: var(--light-text);
    margin-bottom: 1.5rem;
}

.campaign-features {
    list-style: none;
}

.campaign-features li {
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--light-text);
}

.campaign-features li::before {
    content: '✓';
    color: var(--primary-color);
    font-weight: bold;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--dark-text), #374151);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .header h1 {
        font-size: 2.5rem;
    }

    .content-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .campaign-grid {
        grid-template-columns: 1fr;
    }

    .nav-grid {
        grid-template-columns: 1fr;
    }
}