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

:root {
    --color-primary: #1e3a5f;
    --color-primary-dark: #152a45;
    --color-primary-light: #2d5a8a;
    --color-accent: #3b82a0;
    --color-text: #1a1a2e;
    --color-text-secondary: #4a5568;
    --color-text-light: #718096;
    --color-background: #ffffff;
    --color-background-alt: #f8fafc;
    --color-border: #e2e8f0;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --container-max: 1120px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.6;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4 {
    line-height: 1.25;
    font-weight: 600;
    color: var(--color-primary);
}

h1 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2rem;
    letter-spacing: -0.01em;
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: 1.25rem;
    color: var(--color-text);
}

p {
    color: var(--color-text-secondary);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Header */
.header {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-background);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

/* Hero Section */
.hero {
    padding: var(--spacing-3xl) 0;
    text-align: center;
    background: linear-gradient(180deg, var(--color-background) 0%, var(--color-background-alt) 100%);
}

.hero h1 {
    margin-bottom: var(--spacing-md);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle {
    font-size: 1.25rem;
    max-width: 680px;
    margin: 0 auto var(--spacing-xl);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* CTA Button */
.cta-button {
    display: inline-block;
    background: var(--color-primary);
    color: white;
    padding: 1rem 2rem;
    border-radius: 6px;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    background: var(--color-primary-dark);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(30, 58, 95, 0.2);
}

/* Problem Section */
.problem {
    padding: var(--spacing-3xl) 0;
    background: var(--color-background);
}

.problem h2 {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.problem-card {
    padding: var(--spacing-lg);
    background: var(--color-background-alt);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.problem-icon {
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: white;
}

.problem-card h3 {
    margin-bottom: var(--spacing-sm);
}

.problem-card p {
    font-size: 0.95rem;
    line-height: 1.65;
}

/* How It Works Section */
.how-it-works {
    padding: var(--spacing-3xl) 0;
    background: var(--color-background-alt);
}

.how-it-works h2 {
    text-align: center;
}

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
    color: var(--color-text-secondary);
}

.steps {
    max-width: 720px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    align-items: flex-start;
}

.step:last-child {
    margin-bottom: 0;
}

.step-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.125rem;
}

.step-content h3 {
    margin-bottom: var(--spacing-xs);
}

.step-content p {
    font-size: 0.95rem;
    line-height: 1.65;
}

/* Who It's For Section */
.who-its-for {
    padding: var(--spacing-3xl) 0;
    background: var(--color-background);
}

.who-its-for h2 {
    text-align: center;
}

.audience-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.audience-card {
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-background);
    transition: border-color 0.2s ease;
}

.audience-card:hover {
    border-color: var(--color-primary-light);
}

.audience-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.audience-card p {
    font-size: 0.95rem;
    line-height: 1.65;
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-primary);
    text-align: center;
}

.cta-section h2 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.cta-section p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-section .cta-button {
    background: white;
    color: var(--color-primary);
}

.cta-section .cta-button:hover {
    background: var(--color-background-alt);
    color: var(--color-primary-dark);
}

/* Footer */
.footer {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    background: var(--color-background-alt);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

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

.footer-contact a {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

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

.footer-bottom {
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* Mobile Responsive Styles */
@media (max-width: 900px) {
    .problem-grid,
    .audience-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    h1 {
        font-size: 2.25rem;
    }

    h2 {
        font-size: 1.75rem;
    }
}

@media (max-width: 640px) {
    :root {
        --spacing-3xl: 4rem;
        --spacing-2xl: 3rem;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .step {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .cta-button {
        padding: 0.875rem 1.5rem;
        width: 100%;
        text-align: center;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .problem-card,
    .audience-card {
        padding: var(--spacing-md);
    }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    .cta-button {
        transition: none;
    }

    .cta-button:hover {
        transform: none;
    }
}