:root {
    --primary: #00ffcc;
    --bg: #0a0a0a;
    --card-bg: #161616;
    --text: #ffffff;
    --accent: #ff0055;
}

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

header {
    height: 30vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://images.unsplash.com/photo-1514525253361-bee871870472?auto=format&fit=crop&w=1600&q=80');
    background-size: cover;
    background-position: center;
    text-align: center;
    border-bottom: 2px solid var(--primary);
}

h1 { 
    font-size: 3rem; 
    text-transform: uppercase; 
    letter-spacing: 4px; 
    margin-bottom: 10px; 
}

.subtitle { 
    color: var(--primary); 
    font-weight: bold; 
    text-transform: uppercase; 
}

.container {
    max-width: 1100px;
    margin: 10px auto 50px;
    padding: 0 20px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
}

.card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 12px;
    border-left: 4px solid var(--primary);
    transition: transform 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    background: #1f1f1f;
}

.card:focus {
    outline: 2px solid var(--primary);
    transform: translateY(-5px);
}

.date {
    font-size: 0.9rem;
    color: var(--accent);
    font-weight: bold;
    display: block;
    margin-bottom: 8px;
}

h3 { 
    margin: 10px 0; 
    font-size: 1.4rem; 
    color: #fff; 
}

.location {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 15px;
    display: block;
}

p { 
    font-size: 0.95rem; 
    color: #ccc; 
    margin-bottom: 0; 
}

.category-tag {
    display: inline-block;
    padding: 4px 10px;
    background: rgba(0, 255, 204, 0.1);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.75rem;
    margin-top: 15px;
}

.sold-out-sticker {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, #ff0055, #ff4488);
    color: #fff;
    padding: 8px 12px;
    border-radius: 6px;
    font-weight: bold;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 10px rgba(255, 0, 85, 0.4);
    z-index: 10;
}

footer {
    text-align: center;
    padding: 40px;
    border-top: 1px solid #333;
    color: #555;
}