/* CSS Variables with improved contrast ratios */
:root {
    --night-sky: #1a1f2c;
    --moonlight: #ffffff; /* Increased contrast */
    --pine-dark: #2d3639;
    --pine-light: #3c4b44;
    --moss-glow: #8fb48d; /* Adjusted for better contrast */
    --accent: #f7931a;
    --focus-outline: #4a9eff;
}

/* Accessibility - Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent);
    color: var(--night-sky);
    padding: 8px;
    z-index: 100;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0;
}

/* Base styles with improved accessibility */
body {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--night-sky);
    color: var(--moonlight);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header and Logo styles */
header {
    text-align: center;
    padding: 20px;
    background-color: var(--pine-dark);
    margin-bottom: 40px;
    border-bottom: 2px solid var(--moss-glow);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.logo-container {
    max-width: 800px;
    margin: 0 auto 2rem;
}

.logo {
    max-width: 400px;
    margin: 0 auto;
}

.logo img {
    width: 100%;
    height: auto;
    display: block;
}

/* Improved focus styles for interactive elements */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 3px solid var(--focus-outline);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Navigation Styles with improved accessibility */
.city-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.nav-link {
    padding: 12px 20px;
    background-color: var(--pine-light);
    border-radius: 16px;
    color: var(--moonlight);
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid var(--moss-glow);
    font-size: 1rem;
    min-height: 44px;
    min-width: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.nav-link:hover,
.nav-link:focus {
    background-color: var(--moss-glow);
    color: var(--night-sky);
    text-decoration: none;
}

/* Intro section styles */
.intro {
    min-height: 50vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-bottom: 2rem;
    text-align: center;
}

.intro p {
    max-width: 800px;
    margin: 1rem auto;
    line-height: 2;
    text-align: center;
    font-size: 1.1rem;
    color: var(--moonlight);
}

.intro h2 {
    margin-bottom: 2rem;
    color: var(--moss-glow);
}

/* Conference section styles */
.conference-section {
    margin: 2rem 0 4rem;
    padding: 2rem 0;
    border-top: 2px solid var(--moss-glow);
    border-bottom: 2px solid var(--moss-glow);
}

.conference-section h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--moss-glow);
}

.conference-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    padding: 20px 0;
}

.conference-card {
    background-color: var(--pine-dark);
    border-radius: 12px;
    padding: 25px;
    border: 2px solid var(--moss-glow);
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.conference-card .meetup-details {
    text-align: center;
}

.conference-card .meetup-details p {
    text-align: center;
    margin: 10px auto;
}

.conference-card .location-link {
    display: inline-block;
}

.conference-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.conference-card h3 {
    color: var(--accent);
    margin-top: 0;
    text-align: center;
    font-size: 1.4rem;
}

.conference-date {
    background-color: var(--accent);
    color: var(--night-sky);
    padding: 8px 16px;
    border-radius: 20px;
    display: block;
    width: fit-content;
    margin: 10px auto;
    font-weight: bold;
    text-align: center;
}

/* Meetup Grid Layout with improved spacing */
.meetup-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    padding: 20px 0;
}

/* Meetup Card Styles with better contrast */
.meetup-card {
    background-color: var(--pine-dark);
    border-radius: 12px;
    padding: 25px;
    border: 2px solid var(--moss-glow);
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Add these specific styles to your CSS file */
.city-section h2,
.section-title {
    text-align: center !important;
    width: 100%;
    display: block;
}

.meetup-grid {
    text-align: center;
}

.meetup-link {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    margin-top: 1rem;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

.meetup-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.meetup-card h3 {
    color: var(--accent);
    margin-top: 0;
    text-align: center;
    font-size: 1.4rem;
}

.meetup-details {
    background-color: var(--pine-light);
    border-radius: 8px;
    padding: 20px;
    margin: 15px 0;
    color: var(--moonlight);
}

.meetup-details p {
    margin: 10px 0;
    line-height: 1.8;
}

.meetup-details strong {
    color: var(--moss-glow);
    margin-right: 0.5rem;
}

.meetup-details ul {
    list-style-type: none;
    padding-left: 0;
    margin: 10px 0;
}

.meetup-details ul li {
    margin: 8px 0;
    padding-left: 20px;
    position: relative;
}

.meetup-details ul li:before {
    content: "•";
    color: var(--accent);
    position: absolute;
    left: 0;
}

/* Button and Link Styles */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    background-color: var(--pine-light);
    border-radius: 12px;
    color: var(--moonlight);
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    font-size: 1.1rem;
    margin-top: 20px;
    min-height: 44px;
    min-width: 44px;
}

.button:hover,
.button:focus {
    background-color: var(--accent);
    transform: translateY(-2px);
    text-decoration: none;
    color: var(--night-sky);
}

/* Contact Icon Styles */
.contact-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
    min-height: 44px;
    min-width: 44px;
}

.contact-icon img {
    width: 50px;
    height: 50px;
    display: block;
}

.contact-icon:hover,
.contact-icon:focus {
    transform: translateY(-2px);
    background-color: var(--pine-light);
}

/* Footer Styles */
footer {
    background-color: var(--pine-dark);
    padding: 30px 0;
    margin-top: 60px;
    border-top: 2px solid var(--moss-glow);
}

footer .container {
    text-align: center;
    padding: 0 20px;
}

footer p {
    margin: 0;
    color: var(--moonlight);
    font-size: 1rem;
}

footer a {
    color: var(--accent);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    padding: 2px 4px;
}

footer a:hover,
footer a:focus {
    color: var(--moss-glow);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--pine-dark);
    color: var(--moonlight);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    text-decoration: none;
    border: 2px solid var(--moss-glow);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover,
.back-to-top:focus {
    background-color: var(--moss-glow);
    color: var(--night-sky);
    text-decoration: none;
    transform: translateY(-2px);
}

/* Location link styles */
.location-link {
    color: var(--moonlight);
    text-decoration: none;
    transition: all 0.2s ease;
    border-bottom: 1px dashed var(--moss-glow);
    padding-bottom: 2px;
}

.location-link:hover,
.location-link:focus {
    color: var(--accent);
    border-bottom-style: solid;
}

/* Notice banner styles */
.meetup-notice {
    background-color: var(--pine-light);
    border-left: 4px solid var(--accent);
    padding: 15px 20px;
    margin: 0 auto 30px;
    border-radius: 8px;
    text-align: center;
    max-width: 800px;
}

.meetup-notice p {
    margin: 0;
    color: var(--moonlight);
}

.meetup-notice a {
    color: var(--accent);
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 2px 4px;
}

.meetup-notice a:hover,
.meetup-notice a:focus {
    color: var(--moss-glow);
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .meetup-grid {
        grid-template-columns: 1fr;
    }
    
    .logo {
        max-width: 150px;
    }
    
    .logo-container {
        max-width: 150px;
        margin: 0 auto 1rem;
    }
    
    .intro {
        min-height: 50px;
    }
    
    .city-nav {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    
    .nav-link {
        width: 100%;
        max-width: 300px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .meetup-card:hover {
        transform: none;
    }
    
    .back-to-top {
        transition: none;
    }
    
    .button:hover,
    .contact-icon:hover {
        transform: none;
    }
}

/* High Contrast Mode Support */
@media (forced-colors: active) {
    .nav-link,
    .button,
    .meetup-card {
        border: 2px solid currentColor;
    }
    
    .meetup-card:hover {
        border-color: currentColor;
    }
}