:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --text-color: #1f2937;
    --light-text: #6b7280;
    --background: #ffffff;
    --light-background: #f3f4f6;
    --border-color: #e5e7eb;
    --implications-bg: #4f46e5;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header & Navigation */
header {
    background: var(--background);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.main-nav {
    padding: 1rem 0;
}

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

.nav-brand a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    width: 40px;
    height: 40px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    -webkit-tap-highlight-color: transparent;
}

.mobile-menu-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background-color: var(--text-color);
    transition: all 0.3s ease;
}

/* Admin Resource Management */
.icon-button {
    background: none;
    border: none;
    font-size: 1.2rem;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    color: var(--primary-color);
    transition: color 0.2s;
}

.icon-button:hover {
    color: var(--secondary-color);
}

.icon-button:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

/* Resources Page */
.resources {
    padding: 1rem 0;
}

.resources h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.resources .lead {
    font-size: 1.2rem;
    color: var(--light-text);
    margin-bottom: 1rem;
}

.resource-section {
    margin-bottom: 1rem;
    padding: 1rem;
    position: relative;
}

.resource-section:nth-of-type(1) {
    background-color: #f0f5ff;
}

.resource-section:nth-of-type(2) {
    background-color: #f0f7ff;
}

.resource-section:nth-of-type(3) {
    background-color: #f0faff;
}

.resource-section:nth-of-type(4) {
    background-color: #f0fcff;
}

.resource-section h2 {
    font-size: 1.6rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.resource-section h2::before {
    content: '';
    width: 24px;
    height: 24px;
    background-size: contain;
    background-repeat: no-repeat;
}

.resource-section[data-type="newsletter"] h2::before {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" fill="%232563eb" viewBox="0 0 24 24"><path d="M20 4H4c-1.1 0-2 .9-2 2v12c0 1.1.9 2 2 2h16c1.1 0 2-.9 2-2V6c0-1.1-.9-2-2-2zm0 4l-8 5-8-5V6l8 5 8-5v2z"/></svg>');
}

.resource-section[data-type="website"] h2::before {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" fill="%232563eb" viewBox="0 0 24 24"><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zm-1 17.93c-3.95-.49-7-3.85-7-7.93 0-.62.08-1.21.21-1.79L9 15v1c0 1.1.9 2 2 2v1.93zm6.9-2.54c-.26-.81-1-1.39-1.9-1.39h-1v-3c0-.55-.45-1-1-1H8v-2h2c.55 0 1-.45 1-1V7h2c1.1 0 2-.9 2-2v-.41c2.93 1.19 5 4.06 5 7.41 0 2.08-.8 3.97-2.1 5.39z"/></svg>');
}

.resource-section[data-type="youtube"] h2::before {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" fill="%232563eb" viewBox="0 0 24 24"><path d="M12 2C6.48 2 2 6.48 2 12s4.48 10 10 10 10-4.48 10-10S17.52 2 12 2zM10 16.5v-9l6 4.5-6 4.5z"/></svg>');
}

.resource-section[data-type="twitter"] h2::before {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" fill="%232563eb" viewBox="0 0 24 24"><path d="M22.46 6c-.77.35-1.6.58-2.46.69.88-.53 1.56-1.37 1.88-2.38-.83.5-1.75.85-2.72 1.05C18.37 4.5 17.26 4 16 4c-2.35 0-4.27 1.92-4.27 4.29 0 .34.04.67.11.98C8.28 9.09 5.11 7.38 3 4.79c-.37.63-.58 1.37-.58 2.15 0 1.49.75 2.81 1.91 3.56-.71 0-1.37-.2-1.95-.5v.03c0 2.08 1.48 3.82 3.44 4.21a4.22 4.22 0 0 1-1.93.07 4.28 4.28 0 0 0 4 2.98 8.521 8.521 0 0 1-5.33 1.84c-.34 0-.68-.02-1.02-.06C3.44 20.29 5.7 21 8.12 21 16 21 20.33 14.46 20.33 8.79c0-.19 0-.37-.01-.56.84-.6 1.56-1.36 2.14-2.23z"/></svg>');
}

.resource-section[data-type="course"] h2::before {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" fill="%232563eb" viewBox="0 0 24 24"><path d="M12 3L1 9l4 2.18v6L12 21l7-3.82v-6l2-1.09V17h2V9L12 3zm6.82 6L12 12.72 5.18 9 12 5.28 18.82 9zM17 15.99l-5 2.73-5-2.73v-3.72L12 15l5-2.73v3.72z"/></svg>');
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.resource-card {
    background: var(--background);
    border-radius: 6px;
    padding: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.resource-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.resource-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.resource-card p {
    color: var(--light-text);
    margin-bottom: 0.75rem;
    flex-grow: 1;
}

.resource-card .button {
    align-self: flex-start;
    padding: 0.5rem 1.25rem;
    border-radius: 6px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    background: var(--primary-color);
    color: white;
}

.resource-card .button:hover {
    background: var(--secondary-color);
}

@media (max-width: 768px) {
    .resources-grid {
        grid-template-columns: 1fr;
    }
    
    .resource-card {
        margin-bottom: 1rem;
    }
}

/* Hero Section */
.hero {
    position: relative;
    color: white;
    text-align: center;
    padding: 100px 0 60px;
    background: url('/images/AI-Futures-meetup_clean_518055850-banner.jpg') center center;
    background-size: cover;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
}

.hero-content .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero p {
    font-size: 1.6rem;
    line-height: 1.6;
    margin: 0;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
    max-width: 1100px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1.4rem;
    }
}

/* Featured Video */
.featured-video {
    padding: 4rem 0;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    max-width: 800px;
    margin: 2rem auto;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* YouTube Section */
.youtube-section {
    padding: 2rem 0 4rem;
    background: var(--primary-color);
    color: white;
}

.youtube-section h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: white;
}

.youtube-content {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 3rem;
}

.youtube-text {
    flex: 1;
    text-align: left;
}

.youtube-text p {
    font-size: 1.2rem;
    margin: 0 0 1.5rem;
    color: rgba(255, 255, 255, 0.9);
}

.youtube-video {
    flex: 1;
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 8px;
}

.youtube-link {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
    transition: transform 0.2s, box-shadow 0.2s;
}

.youtube-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

@media (max-width: 768px) {
    .youtube-content {
        flex-direction: column-reverse;
        gap: 2rem;
    }
    
    .youtube-text {
        text-align: center;
    }
}

/* Meetup Group */
.meetup-group {
    padding: 2rem 0 4rem;
    background: var(--light-background);
}

.meetup-group h2 {
    text-align: center;
    margin-bottom: 2rem;
}

.meetup-content {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 3rem;
}

.meetup-text {
    flex: 1;
    text-align: left;
}

.meetup-text p {
    font-size: 1.2rem;
    margin: 0;
    color: var(--text-color);
}

.meetup-link {
    flex: 1;
    display: block;
    transition: transform 0.2s;
}

.meetup-link:hover {
    transform: translateY(-2px);
}

.meetup-image {
    max-width: 100%;
}

.responsive-img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    .meetup-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .meetup-text {
        text-align: center;
    }
}

/* Implications Section */
.implications-section {
    padding: 2rem 0 0;
    background: var(--implications-bg);
    color: white;
    margin-bottom: 0;
}

.implications-section h2 {
    text-align: center;
    margin-bottom: 1rem;
    color: white;
}

.implications-content {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 3rem;
    min-height: 380px;
    padding-bottom: 2rem;
}

.implications-text {
    flex: 1;
    text-align: left;
    padding: 2rem 0;
}

.implications-text p {
    font-size: 1.1rem;
    line-height: 1.7;
    margin: 0;
    color: rgba(255, 255, 255, 0.9);
    white-space: pre-line;
}

.implications-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.implications-image img {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.2));
}

@media (max-width: 768px) {
    .implications-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .implications-text {
        text-align: left;
    }
    
    .implications-image {
        order: -1;
    }
}

/* Resources Grid */
.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.resource-card {
    background: var(--background);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Login Form */
.login-section {
    padding: 4rem 0;
    background: var(--light-background);
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
}

.login-box {
    background: var(--background);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    max-width: 400px;
    margin: 0 auto;
}

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

.login-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.login-form input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    position: relative;
    background-color: #fff;
    margin: 10% auto;
    padding: 20px;
    border-radius: 8px;
    max-width: 800px;
    width: 90%;
}

/* Footer */
footer {
    background: var(--light-background);
    padding: 3rem 0 1rem;
    margin-top: 0;
}

footer h3 {
    color: var(--text-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

footer p {
    color: var(--text-color);
    line-height: 1.5;
}

footer a {
    color: var(--light-text);
    text-decoration: none;
    transition: color 0.2s;
}

footer a:hover {
    color: var(--primary-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

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

.footer-bottom p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--light-text);
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-section {
        margin-bottom: 2rem;
    }
}

/* Buttons */
.button {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s;
}

.button:hover {
    background: var(--secondary-color);
}

/* Utilities */
.error-message {
    color: #dc2626;
    background: #fee2e2;
    padding: 0.5rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-color);
    margin: 5px 0;
    transition: 0.3s;
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--background);
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        display: flex;
    }
}