/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-accent: #f1f5f9;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --max-width: 1200px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    font-size: 16px;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.9);
}

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

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-link {
    text-decoration: none;
    color: inherit;
}

.logo-link:hover h1 {
    color: var(--primary-dark);
}

.footer-brand-link {
    text-decoration: none;
    color: var(--primary-color);
}

.footer-brand-link:hover {
    color: var(--primary-dark);
}

.footer-meta {
    margin-bottom: 0.35rem;
}

.footer-link {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer-link:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

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

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.2s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.2s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 0 3rem;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-color);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Main Content */
.main {
    background-color: var(--bg-primary);
}

.content {
    padding: 3rem 0;
}

.section {
    margin-bottom: 3rem;
    scroll-margin-top: 100px;
}

.section-title {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}

.section-content {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.section-content p {
    margin-bottom: 1.5rem;
}

.section-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

.section-content a:not(.contact-email) {
    color: var(--primary-color);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.section-content a:not(.contact-email):hover {
    color: var(--primary-dark);
}

/* Info Cards */
.info-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin: 1.5rem 0;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
}

.info-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.info-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.info-card p {
    margin-bottom: 0;
    color: var(--text-secondary);
}

/* Feature List */
.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    background-color: var(--bg-accent);
    border-left: 4px solid var(--primary-color);
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    transition: all 0.2s ease;
}

.feature-list li:hover {
    background-color: var(--bg-secondary);
    transform: translateX(4px);
}

.feature-list li strong {
    display: block;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* Contact Info */
.contact-info {
    background-color: var(--bg-accent);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    margin-top: 1.5rem;
}

.contact-email {
    display: inline-block;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    background-color: var(--bg-primary);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.contact-email:hover {
    background-color: var(--primary-color);
    color: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 2.5rem 0;
    margin-top: 4rem;
}

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

.footer-left h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.footer-left p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.footer-right p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.footer-right {
    text-align: right;
}

.page-home .footer-right p:last-child {
    margin-top: 0.25rem;
}

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

    .nav {
        flex-direction: column;
        gap: 1rem;
        padding: 1.5rem 0;
    }

    .nav-links {
        gap: 1.5rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero {
        padding: 2.5rem 0 2rem;
    }

    .hero-title {
        font-size: 2.25rem;
    }

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

    .section-title {
        font-size: 1.75rem;
    }

    .section-content {
        font-size: 1rem;
    }

    .info-card {
        padding: 1.5rem;
    }

    .feature-list li {
        padding: 1.25rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .contact-email {
        font-size: 1.125rem;
        padding: 0.625rem 1.25rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .info-card {
        padding: 1.25rem;
    }

    .feature-list li {
        padding: 1rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .nav-link {
        font-size: 0.9rem;
    }

    .home-hero {
        padding: 3rem 0 2.5rem;
    }

    .home-hero-actions {
        flex-direction: column;
    }

    .home-hero-actions .btn {
        width: 100%;
        max-width: 20rem;
    }
}

/* Smooth animations */
@media (prefers-reduced-motion: no-preference) {
    .info-card,
    .feature-list li,
    .contact-email,
    .nav-link {
        transition: all 0.2s ease;
    }
}

/* Focus styles for accessibility */
.nav-link:focus,
.contact-email:focus,
.logo-link:focus-visible,
.btn:focus-visible,
.footer-link:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Home page */
.home-hero {
    padding: 4.5rem 0 4rem;
}

.home-badge {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.08);
    border: 1px solid rgba(37, 99, 235, 0.2);
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    margin-bottom: 1.25rem;
}

.home-hero-title {
    font-size: clamp(2.25rem, 5vw, 3.25rem);
    line-height: 1.15;
    max-width: 18ch;
    margin-left: auto;
    margin-right: auto;
}

.text-accent {
    color: var(--primary-color);
}

.home-hero-lead {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 36rem;
    margin: 0 auto 2rem;
    line-height: 1.65;
}

.home-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    align-items: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-ghost {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-ghost:hover {
    background: rgba(37, 99, 235, 0.06);
}

.home-content .section-lead {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 42rem;
    margin: -0.5rem 0 2rem;
    line-height: 1.65;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.home-feature {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.home-feature:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.home-feature-icon {
    font-size: 1.75rem;
    line-height: 1;
    margin-bottom: 0.75rem;
}

.home-feature-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.home-feature-text {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.home-cta {
    background: linear-gradient(180deg, var(--bg-accent) 0%, var(--bg-secondary) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    text-align: center;
    margin: 2.5rem 0 3rem;
}

.home-cta-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.home-cta-text {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    max-width: 40rem;
    margin: 0 auto;
    line-height: 1.65;
}

.page-home .section-content a:not(.contact-email) {
    color: var(--primary-color);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.page-home .section-content a:not(.contact-email):hover {
    color: var(--primary-dark);
}

/* Print styles */
@media print {
    .header,
    .footer,
    .nav-links {
        display: none;
    }
    
    .hero {
        background: none;
        border: none;
        padding: 1rem 0;
    }
    
    .info-card {
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
}