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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #64748b;
    --text-dark: #0f172a;
    --text-light: #475569;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border: #e2e8f0;
    --success: #10b981;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--text-dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

/* Navigation */
.nav {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

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

.nav-brand a {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Buttons */
.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.2);
}

.btn-secondary {
    background: transparent;
    color: var(--text-dark);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 0 8rem;
    text-align: center;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-tagline {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    opacity: 0.85;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.8;
    opacity: 0.95;
    margin-bottom: 2.5rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.hero-cta .btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
}

.hero-cta .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: white;
}

.hero-note {
    font-size: 0.875rem;
    opacity: 0.85;
}

/* Section Styles */
.section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-header p {
    font-size: 1.25rem;
    color: var(--text-light);
}

/* Features Section */
.features {
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* Comparison Section */
.comparison {
    background: var(--bg-white);
}

.comparison-table {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border: 1px solid var(--border);
    border-radius: 1rem;
    overflow: hidden;
}

.comparison-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
}

.comparison-row:last-child {
    border-bottom: none;
}

.comparison-row.header {
    background: var(--bg-light);
    font-weight: 700;
}

.comparison-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.comparison-cell:first-child {
    justify-content: flex-start;
    text-align: left;
    font-weight: 500;
}

.comparison-cell.highlight {
    color: var(--primary);
    font-weight: 600;
}

/* Pricing Section */
.pricing {
    background: var(--bg-light);
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto 3rem;
}

.pricing-card {
    background: white;
    border: 2px solid var(--border);
    border-radius: 1rem;
    padding: 2.5rem;
    position: relative;
    transition: transform 0.2s, box-shadow 0.2s;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.2);
}

.pricing-badge {
    position: absolute;
    top: -1rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin-bottom: 0.5rem;
}

.currency {
    font-size: 1.5rem;
    font-weight: 600;
}

.amount {
    font-size: 3.5rem;
    font-weight: 800;
    margin: 0 0.25rem;
}

.period {
    font-size: 1.25rem;
    color: var(--text-light);
}

.price-note {
    font-size: 0.875rem;
    color: var(--text-light);
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-dark);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-footer {
    text-align: center;
    color: var(--text-light);
}

/* Mission Section */
.mission {
    background: var(--bg-white);
}

.mission-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.mission-lead {
    text-align: center;
    font-size: 1.25rem;
    max-width: 800px;
    margin: 0 auto 3rem;
    color: var(--text-light);
    line-height: 1.8;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.mission-item h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.mission-item p {
    color: var(--text-light);
    line-height: 1.7;
}

.mission-transparency {
    background: var(--bg-light);
    padding: 2.5rem;
    border-radius: 1rem;
    text-align: center;
}

.mission-transparency h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.mission-transparency p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

/* Impact Section */
.impact {
    background: var(--bg-light);
}

.impact-example {
    background: white;
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    margin-bottom: 3rem;
}

.impact-example h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
}

.impact-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-light);
    font-weight: 500;
}

.impact-breakdown {
    margin-bottom: 3rem;
}

.impact-breakdown h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.impact-breakdown ul {
    list-style: none;
}

.impact-breakdown li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-dark);
}

.impact-breakdown li:last-child {
    border-bottom: none;
}

.testimonials {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 0.75rem;
    border-left: 4px solid var(--primary);
}

.testimonial-text {
    font-style: italic;
    color: var(--text-dark);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.testimonial-author {
    font-weight: 600;
    color: var(--text-light);
    font-size: 0.875rem;
}

.impact-cta {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.impact-cta p {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.impact-cta p:last-child {
    color: var(--text-light);
    font-size: 1rem;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 5rem 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.25rem;
    opacity: 0.95;
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta-note {
    font-size: 0.875rem;
    opacity: 0.85;
    margin-top: 1rem;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1.5rem;
}

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

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.tagline {
    opacity: 0.7;
    font-style: italic;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    opacity: 0.7;
}

.footer-column a {
    display: block;
    color: white;
    text-decoration: none;
    margin-bottom: 0.75rem;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.footer-column a:hover {
    opacity: 1;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    opacity: 0.7;
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .nav-links {
        display: none;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .section-header p {
        font-size: 1.125rem;
    }

    .comparison-row {
        grid-template-columns: 1.5fr 1fr 1fr;
        font-size: 0.875rem;
        padding: 1rem;
    }

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

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

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .hero {
        padding: 4rem 0 6rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section {
        padding: 3rem 0;
    }

    .features-grid,
    .pricing-cards,
    .mission-grid {
        grid-template-columns: 1fr;
    }
}

/* Early Access Banner */
.early-access-banner {
    background: linear-gradient(135deg, #d97706, #b45309);
    color: #fff;
    text-align: center;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    line-height: 1.5;
}

.early-access-banner strong {
    font-weight: 700;
}

.early-access-banner a {
    color: #fef3c7;
    font-weight: 700;
    text-decoration: underline;
    white-space: nowrap;
}

.early-access-banner a:hover {
    color: #fff;
}

/* MVP / Early Access Notice */
.mvp-notice {
    background: #fffbeb;
    border: 1px solid #fcd34d;
    border-radius: 8px;
    padding: 1rem 1.25rem;
    margin-top: 1.75rem;
    font-size: 0.9rem;
    color: #78350f;
    line-height: 1.6;
}

.mvp-notice strong {
    font-weight: 700;
    color: #92400e;
}

.mvp-notice a {
    color: #92400e;
    font-weight: 700;
}

/* Features — See All Link */
.features-see-all {
    text-align: center;
    margin-top: 2.5rem;
}

.features-see-all a {
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    font-size: 1rem;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s;
}

.features-see-all a:hover {
    border-bottom-color: var(--primary);
}

/* Giving Tier Card */
.giving-tier-card {
    max-width: 400px;
    margin: 0 auto 3rem;
    background: var(--bg-white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    text-align: center;
}

.giving-tier-card h3 {
    margin-bottom: 0.5rem;
}

.giving-tier-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
}

.giving-tier-label {
    color: var(--text-light);
    margin-top: 0.5rem;
}

.impact-tiers-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.impact-example .mission-transparency {
    margin-top: 2rem;
}

/* 404 Page */
.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.error-page h1 {
    font-size: 6rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 1rem;
}

.error-page h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.error-page p {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}