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

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-alt: #f3f4f6;
    --border-color: #e5e7eb;
    --max-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 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 var(--spacing-sm);
}

/* Header */
header {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

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

nav ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-md);
}

nav a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem;
}

nav a:hover,
nav a:focus {
    color: var(--primary-color);
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

nav a[aria-current="page"] {
    color: var(--primary-color);
}

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

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.hero .lead {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto;
    opacity: 0.95;
}

/* Page Header */
.page-header {
    background-color: var(--bg-secondary);
    padding: var(--spacing-lg) 0;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.page-header .lead {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Notice Section */
.notice {
    background-color: #fef3c7;
    border-left: 4px solid #f59e0b;
    padding: var(--spacing-sm) 0;
}

.notice-text {
    font-size: 0.9rem;
    color: #92400e;
    font-style: italic;
}

/* Content Sections */
.content-section {
    padding: var(--spacing-xl) 0;
}

.content-section.alt {
    background-color: var(--bg-secondary);
}

.intro-text {
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-align: center;
}

/* Grid Layout */
.grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.text-content h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.text-content p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    line-height: 1.8;
}

.image-content img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.feature-card {
    background-color: var(--bg-primary);
    padding: var(--spacing-md);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: box-shadow 0.3s ease;
}

.content-section.alt .feature-card {
    background-color: var(--bg-secondary);
}

.feature-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--primary-color);
}

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

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.contact-info h2,
.contact-form-wrapper h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
    color: var(--primary-color);
}

.contact-item p {
    color: var(--text-secondary);
    margin: 0;
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.btn-submit {
    padding: 0.875rem 2rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
    align-self: flex-start;
}

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

.btn-submit:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Legal Content */
.legal-content {
    max-width: 800px;
    margin: 0 auto;
}

.legal-content h2 {
    font-size: 1.75rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.legal-content h2:first-child {
    margin-top: 0;
}

.legal-content p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    line-height: 1.8;
}

.legal-content ul {
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-md);
    color: var(--text-secondary);
}

.legal-content li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.8;
}

/* Footer */
footer {
    background-color: var(--text-primary);
    color: white;
    padding: var(--spacing-lg) 0 var(--spacing-sm);
    margin-top: var(--spacing-xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-brand .logo {
    color: white;
    margin-bottom: var(--spacing-xs);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover,
.footer-links a:focus {
    color: white;
    outline: 2px solid white;
    outline-offset: 2px;
}

.footer-bottom {
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (min-width: 768px) {
    .grid {
        grid-template-columns: 1fr 1fr;
    }

    .grid.reverse {
        direction: rtl;
    }

    .grid.reverse > * {
        direction: ltr;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .hero h1 {
        font-size: 3rem;
    }

    .page-header h1 {
        font-size: 3rem;
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 767px) {
    nav ul {
        gap: var(--spacing-sm);
    }

    nav a {
        font-size: 0.9rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

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

    .page-header h1 {
        font-size: 2rem;
    }

    .text-content h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    header .container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero {
        padding: var(--spacing-lg) 0;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}