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

:root {
    --primary-black: #000000;
    --primary-white: #ffffff;
    --gray-light: #f5f5f5;
    --gray-medium: #e0e0e0;
    --gray-dark: #666666;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--primary-black);
    background-color: var(--primary-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--gray-medium);
    background-color: var(--primary-white);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    justify-content: center;
}

.logo {
    width: 60px;
    height: auto;
    display: block;
    object-fit: contain;
}

.logo-text {
    font-size: 2rem;
    font-weight: 400;
    letter-spacing: -0.02em;
    color: var(--primary-black);
    margin: 0;
    font-family: 'Inter', sans-serif;
}

.logo-text::first-letter {
    text-transform: lowercase;
}

/* Hero Section */
.hero {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background: linear-gradient(to bottom, var(--primary-white) 0%, var(--gray-light) 100%);
}

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

.hero-title {
    font-size: 3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--primary-black);
    letter-spacing: -0.03em;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--gray-dark);
    line-height: 1.8;
    font-weight: 400;
}

/* Section Styles */
section {
    padding: var(--spacing-xl) 0;
}

.section-content {
    text-align: center;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-black);
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray-dark);
    margin-bottom: var(--spacing-lg);
}

/* About Section */
.about {
    background-color: var(--primary-white);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.about-card {
    padding: var(--spacing-md);
    border: 1px solid var(--gray-medium);
    border-radius: var(--border-radius);
    background-color: var(--primary-white);
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-black);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.about-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-black);
}

.about-card p {
    color: var(--gray-dark);
    line-height: 1.7;
}

/* Registration Section */
.registration {
    background-color: var(--gray-light);
    text-align: center;
}

.registration-content {
    max-width: 600px;
    margin: 0 auto;
}

.registration-text {
    font-size: 1.5rem;
    color: var(--gray-dark);
    margin-bottom: var(--spacing-md);
    font-weight: 400;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 1rem 2.5rem;
    background-color: var(--primary-black);
    color: var(--primary-white);
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 2px solid var(--primary-black);
}

.cta-button:hover {
    background-color: var(--primary-white);
    color: var(--primary-black);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.button-arrow {
    transition: var(--transition);
}

.cta-button:hover .button-arrow {
    transform: translateX(4px);
}

/* Facebook Posts Section */
.facebook-posts {
    background-color: var(--primary-white);
}

.posts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    min-height: 200px;
}

.posts-container iframe {
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.loading-spinner {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    color: var(--gray-dark);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-medium);
    border-top-color: var(--primary-black);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-sm);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.facebook-post {
    border: 1px solid var(--gray-medium);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    background-color: var(--primary-white);
    transition: var(--transition);
    text-align: left;
}

.facebook-post:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-black);
}

.post-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.post-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--gray-medium);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.post-author {
    font-weight: 600;
    color: var(--primary-black);
}

.post-date {
    font-size: 0.875rem;
    color: var(--gray-dark);
    margin-left: auto;
}

.post-content {
    color: var(--gray-dark);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.post-image {
    width: 100%;
    border-radius: var(--border-radius);
    margin: var(--spacing-sm) 0;
    background-color: var(--gray-light);
    aspect-ratio: 16/9;
    object-fit: cover;
}

.post-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary-black);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    margin-top: var(--spacing-sm);
    transition: var(--transition);
}

.post-link:hover {
    text-decoration: underline;
}

.facebook-link {
    margin-top: var(--spacing-lg);
}

.facebook-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.875rem 2rem;
    background-color: #1877F2;
    color: var(--primary-white);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.facebook-button:hover {
    background-color: #166FE5;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(24, 119, 242, 0.3);
}

.facebook-button svg {
    width: 24px;
    height: 24px;
}

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

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

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.logo-small {
    width: 40px;
    height: auto;
    object-fit: contain;
    filter: invert(1); /* Inverts colors to make logo white on black background */
}

.logo-text-small {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--primary-white);
}

.footer-text {
    color: var(--gray-medium);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

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

.footer-links a {
    color: var(--primary-white);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
}

.footer-links a:hover {
    text-decoration: underline;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

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

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

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

    .posts-container {
        grid-template-columns: 1fr;
    }

    .logo {
        width: 50px;
        height: 50px;
    }

    .logo-text {
        font-size: 1.5rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }

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

    .registration-text {
        font-size: 1.25rem;
    }

    .cta-button {
        padding: 0.875rem 2rem;
        font-size: 1rem;
    }
}