/* VATIE Site - Main Stylesheet */

/* CSS Custom Properties */
:root {
    --site-accent: #90cfff;
}

/* Base Styles */
body {
    background-color: #ffffff;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: #000000;
}

/* Navigation Styles */
.navbar {
    background-color: #ffffff;
    border-bottom: 2px solid #000000;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.5rem;
    color: #000000;
    text-decoration: none;
}

.navbar-brand:hover {
    color: #000000;
}

.navbar-nav .nav-link {
    color: #000000;
    font-weight: 500;
    font-size: 1.1rem;
    margin: 0 1rem;
    text-decoration: none;
    transition: background-color 0.2s;
    padding: 0.5rem 1rem;
}

.navbar-nav .nav-link:hover {
    background-color: var(--site-accent);
    color: #000000;
}

.navbar-nav .nav-link.active {
    background-color: var(--site-accent);
    color: #000000;
}

.dropdown-menu {
    border: 2px solid #000000;
    border-radius: 0;
    box-shadow: none;
    background-color: #ffffff;
}

.dropdown-item {
    color: #000000;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    transition: background-color 0.2s;
}

.dropdown-item:hover {
    background-color: var(--site-accent);
    color: #000000;
}

.dropdown-divider {
    border-color: #000000;
    margin: 0.5rem 0;
}

.btn-register {
    background-color: var(--site-accent);
    color: #000000;
    border: 2px solid #000000;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: background-color 0.2s;
}

.btn-register:hover {
    background-color: #000000;
    color: var(--site-accent);
}

.navbar-toggler {
    border: 1px solid #000000;
    padding: 0.25rem 0.5rem;
}

.navbar-toggler:focus {
    box-shadow: none;
    border-color: #000000;
}

.navbar-toggler-icon {
    background-image: url('data:image/svg+xml,%3csvg xmlns=%27http://www.w3.org/2000/svg%27 viewBox=%270 0 30 30%27%3e%3cpath stroke=%27rgba%280, 0, 0, 1%29%27 stroke-linecap=%27round%27 stroke-miterlimit=%2710%27 stroke-width=%272%27 d=%27M4 7h22M4 15h22M4 23h22%27/%3e%3c/svg%3e');
    width: 1.5em;
    height: 1.5em;
}

/* Footer Styles */
.footer {
    background-color: #000000;
    color: var(--site-accent);
    padding: 3rem 0 2rem 0;
    margin-top: 4rem;
}

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

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

.footer-section h5 {
    color: var(--site-accent);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-section p,
.footer-section li {
    color: #ffffff;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-link {
    color: #ffffff;
    text-decoration: none;
    transition: color 0.2s;
}

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

.footer-bottom {
    border-top: 1px solid var(--site-accent);
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    color: #ffffff;
    font-size: 0.9rem;
    margin: 0;
}

/* Common Layout Styles */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

body {
    margin: 0;
    padding: 0;
}

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

.page-title {
    font-size: 3rem;
    font-weight: 300;
    color: #000000;
    margin-bottom: 1rem;
}

.page-subtitle {
    font-size: 1.3rem;
    color: #000000;
}

/* Link Styles */
.description-link {
    color: #0000EE;
    text-decoration: underline;
}

.description-link:hover {
    color: #551A8B;
}

.icon-link {
    color: #0000EE;
    text-decoration: underline;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.icon-link:hover {
    color: #551A8B;
}

.icon-link svg {
    width: 1em;
    height: 1em;
    fill: currentColor;
}

/* Newsletter Sidebar Styles */
.newsletter-signup {
    background-color: var(--site-accent);
    border: 2px solid #000000;
    padding: 2rem;
    margin-bottom: 2rem;
}

.newsletter-signup h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #000000;
    margin-bottom: 1rem;
}

.newsletter-signup p {
    font-size: 1rem;
    color: #000000;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.signup-form {
    width: 100%;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    font-weight: 600;
    color: #000000;
    margin-bottom: 0.5rem;
    display: block;
    font-size: 0.9rem;
}

.form-control {
    border: 2px solid #000000;
    border-radius: 0;
    padding: 0.75rem;
    font-size: 1rem;
    background-color: #ffffff;
    color: #000000;
    width: 100%;
}

.form-control:focus {
    border-color: #000000;
    box-shadow: none;
    background-color: #ffffff;
}

.btn-newsletter {
    background-color: #000000;
    color: var(--site-accent);
    border: 2px solid #000000;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 0;
    transition: all 0.2s;
    width: 100%;
}

.btn-newsletter:hover {
    background-color: #ffffff;
    color: #000000;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    border: 2px solid #000000;
    background-color: #ffffff;
    margin-top: 2px;
    flex-shrink: 0;
}

.checkbox-group label {
    font-size: 0.9rem;
    margin-bottom: 0;
    line-height: 1.4;
}

.sidebar-widget {
    background-color: #ffffff;
    border: 2px solid #000000;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.sidebar-widget h4 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #000000;
    margin-bottom: 1rem;
}

.sidebar-widget ul {
    list-style: none;
    padding: 0;
}

.sidebar-widget li {
    margin-bottom: 0.75rem;
}

.sidebar-widget a {
    color: #000000;
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.sidebar-widget a:hover {
    color: #0000EE;
    text-decoration: underline;
}

/* Home Page Styles */
.hero-section {
    text-align: center;
    margin-bottom: 4rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 300;
    color: #000000;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #000000;
    margin-bottom: 2rem;
}

.hero-cta {
    background-color: var(--site-accent);
    color: #000000;
    border: 2px solid #000000;
    padding: 1rem 2rem;
    font-weight: 600;
    font-size: 1.2rem;
    text-decoration: none;
    transition: all 0.2s;
    display: inline-block;
}

.hero-cta:hover {
    background-color: #000000;
    color: var(--site-accent);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.info-card {
    background-color: #ffffff;
    border: 2px solid #000000;
    padding: 2rem;
}

.info-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #000000;
    margin-bottom: 1rem;
}

.info-card p {
    font-size: 1.1rem;
    color: #000000;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.stats-section {
    background-color: var(--site-accent);
    border: 2px solid #000000;
    padding: 3rem 2rem;
    margin-bottom: 4rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item h4 {
    font-size: 3rem;
    font-weight: 700;
    color: #000000;
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-size: 1.2rem;
    color: #000000;
    font-weight: 500;
}

/* Newsletter/Blog Styles */
.blog-layout {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 3rem;
    margin-top: 2rem;
}

.blog-main {
    min-width: 0;
}

.blog-sidebar {
    position: sticky;
    top: 2rem;
    height: fit-content;
}

.blog-post {
    background-color: #ffffff;
    border: 2px solid #000000;
    padding: 2.5rem;
    margin-bottom: 3rem;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.post-date {
    background-color: var(--site-accent);
    border: 1px solid #000000;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    color: #000000;
    font-weight: 600;
}

.post-category {
    background-color: #ffffff;
    border: 1px solid #000000;
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    color: #000000;
    font-weight: 500;
}

.post-title {
    font-size: 2.2rem;
    font-weight: 300;
    color: #000000;
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.post-excerpt {
    font-size: 1.1rem;
    color: #000000;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.post-content {
    margin-bottom: 2rem;
}

.post-highlights {
    background-color: #f8f9fa;
    border-left: 4px solid var(--site-accent);
    padding: 1.5rem;
    margin: 2rem 0;
}

.post-highlights h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #000000;
    margin-bottom: 1rem;
}

.post-highlights ul {
    margin-bottom: 0;
}

.post-highlights li {
    font-size: 1rem;
    color: #000000;
    margin-bottom: 0.5rem;
    line-height: 1.5;
}

.post-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
    padding-top: 1.5rem;
    border-top: 1px solid #e9ecef;
    flex-wrap: wrap;
}

.btn-read {
    background-color: #ffffff;
    color: #000000;
    border: 2px solid #000000;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 1rem;
}

.btn-read:hover {
    background-color: var(--site-accent);
    color: #000000;
}

.btn-download {
    background-color: #000000;
    color: #ffffff;
    border: 2px solid #000000;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 1rem;
}

.btn-download:hover {
    background-color: var(--site-accent);
    color: #000000;
}

/* Schedule/Conference Styles */
.schedule-container {
    width: 100%;
    margin: 1rem 0 2rem 0;
    padding: 0;
}

.schedule-header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 0 2rem;
}

.schedule-title {
    font-weight: 300;
    font-size: 3.5rem;
    color: #000000;
    margin-bottom: 0.5rem;
}

.search-container {
    margin-bottom: 2rem;
    padding: 0 2rem;
}

.search-input {
    border-radius: 0;
    border: 1px solid #000000;
    padding: 1rem 2rem;
    font-size: 1.2rem;
    background-color: #ffffff;
    color: #000000;
}

.schedule-table {
    background: #ffffff;
    border-radius: 0;
    overflow: hidden;
    border: 1px solid #000000;
}

.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table {
    margin-bottom: 0;
    min-width: 800px;
}

.table thead th {
    background-color: #ffffff;
    border-bottom: 2px solid #000000;
    font-weight: 600;
    color: #000000;
    padding: 1.5rem 1.5rem;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    transition: background-color 0.2s;
    white-space: nowrap;
    min-width: fit-content;
    font-size: 1.2rem;
}

.table thead th:hover {
    background-color: var(--site-accent);
}

.table tbody td {
    padding: 1.5rem 1.5rem;
    vertical-align: middle;
    border-top: 1px solid #000000;
    font-size: 1.1rem;
    color: #000000;
}

.time-column {
    font-weight: 600;
    font-size: 1.3rem;
    color: #000000;
    width: 220px;
}

.date-time {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.date {
    font-size: 1.1rem;
    color: #000000;
    font-weight: 400;
}

.time {
    font-size: 1.3rem;
    font-weight: 600;
    color: #000000;
}

.category-badge {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    border-radius: 0;
    font-size: 1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background-color: var(--site-accent);
    color: #000000;
    border: 1px solid #000000;
}

.location {
    font-weight: 500;
    color: #000000;
    font-size: 1.1rem;
}

.description {
    color: #000000;
    line-height: 1.5;
    font-size: 1.1rem;
}

.sort-icon {
    margin-left: 0.5rem;
    opacity: 0.5;
    transition: opacity 0.2s;
    color: #000000;
}

.sort-active .sort-icon {
    opacity: 1;
}

.no-results {
    text-align: center;
    padding: 3rem;
    color: #000000;
    font-style: italic;
}

/* Mobile Responsive Styles */
@media (max-width: 768px) {
    .navbar {
        padding: 0.75rem 0;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .navbar-nav .nav-link {
        margin: 0.25rem 0;
        padding: 0.5rem 1rem;
    }
    
    .btn-register {
        margin-top: 1rem;
        padding: 0.6rem 1.25rem;
        font-size: 0.9rem;
    }
    
    .main-container {
        padding: 2rem 1rem;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .blog-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .blog-sidebar {
        order: -1;
        position: static;
    }
    
    .blog-post {
        padding: 1.5rem;
    }
    
    .schedule-title {
        font-size: 2.5rem;
    }
    
    .footer {
        padding: 2rem 0 1.5rem 0;
    }
    
    .footer-content {
        padding: 0 1rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .schedule-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .stats-section {
        padding: 2rem 1rem;
    }
    
    .stat-item h4 {
        font-size: 2rem;
    }
}