:root {
    --primary-color: #007bff;
    --background-color: #f8f9fa;
    --card-background: #ffffff;
    --text-color: #2c3e50;
    --text-muted: #6c757d;
    --border-color: #e1e5ea;
    --hero-overlay-color: rgba(0, 0, 0, 0.5);
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    line-height: 1.6;
}

/* Header */
.main-header {
    background-color: var(--card-background);
    padding: 15px 5%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    height: 70vh;
    padding: 0 20px;
    position: relative;
    background-image: url('https://images.unsplash.com/photo-1505373877841-8d25f7d46678?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1712&q=80');
    background-size: cover;
    background-position: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--hero-overlay-color);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero h1 {
    font-size: 3.5em;
    font-weight: 700;
    margin-bottom: 0.5em;
}

.hero p {
    font-size: 1.2em;
    margin-bottom: 1.5em;
    font-weight: 300;
}

.cta-button {
    background-color: var(--primary-color);
    color: white;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1em;
    transition: background-color 0.3s ease, transform 0.3s ease;
    display: inline-block;
}

.cta-button:hover {
    background-color: #0056b3;
    transform: translateY(-3px);
}

/* Events Showcase */
.events-showcase {
    padding: 60px 5%;
    text-align: center;
}

.section-title {
    font-size: 2.5em;
    margin-bottom: 40px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.event-promo-card {
    background-color: var(--card-background);
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    overflow: hidden;
    text-align: left;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.event-promo-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.card-image-tech, .card-image-music, .card-image-art {
    height: 180px;
    background-size: cover;
    background-position: center;
}
.card-image-tech { background-image: url('https://images.unsplash.com/photo-1526628953301-3e589a6a8b74?auto=format&fit=crop&w=800&q=60'); }
.card-image-music { background-image: url('https://images.unsplash.com/photo-1514525253161-7a46d19cd819?auto=format&fit=crop&w=800&q=60'); }
.card-image-art { background-image: url('https://images.unsplash.com/photo-1501426026826-31c667bdf23d?auto=format&fit=crop&w=800&q=60'); }


.card-content {
    padding: 20px;
}

.card-content h3 {
    margin-top: 0;
    font-size: 1.4em;
    color: var(--primary-color);
}

.card-content .details {
    color: var(--text-muted);
    margin: 5px 0;
    display: flex;
    align-items: center;
}
.card-content .icon {
    margin-right: 8px;
}
.card-content .description {
    font-size: 0.95em;
    margin-top: 15px;
}

/* Footer */
.main-footer {
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    background-color: #e9ecef;
    color: var(--text-muted);
}


/* Animations */
.fade-in {
    animation: fadeIn 1s ease-out forwards;
}
.fade-in-delay {
    animation: fadeIn 1s 0.3s ease-out forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.5em; }
    .hero p { font-size: 1em; }
}