/* EPIC Presentations - Minimal, Fast CSS */

:root {
    --primary: #3182ce;
    --primary-dark: #2c5282;
    --text: #2d3748;
    --text-light: #718096;
    --bg: #ffffff;
    --bg-light: #f7fafc;
    --border: #e2e8f0;
    --live: #48bb78;
    --archived: #9f7aea;
}

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

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

/* Header */
header {
    background: var(--bg-light);
    padding: 2rem 0;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header p {
    color: var(--text-light);
    font-size: 1.1rem;
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

.year-section, .archive-section {
    margin-bottom: 4rem;
}

.year-section h2, .archive-section h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary);
}

/* Presentation Cards */
.presentations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.presentation-card {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    position: relative;
    transition: box-shadow 0.2s;
}

.presentation-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* Status Badges */
.status-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    color: white;
}

.status-badge.live {
    background: var(--live);
}

.status-badge.archived {
    background: var(--archived);
}

/* Card Content */
.presentation-card h3 {
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
    line-height: 1.4;
}

.presentation-card .meta {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.presentation-card .presenter {
    font-weight: 500;
    margin-bottom: 1rem;
}

/* Buttons */
.actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

.btn {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s;
    text-align: center;
}

.btn.primary {
    background: var(--primary);
    color: white;
}

.btn.primary:hover {
    background: var(--primary-dark);
}

.btn.secondary {
    background: white;
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn.secondary:hover {
    background: var(--bg-light);
}

/* Empty State */
.no-content {
    color: var(--text-light);
    font-style: italic;
    padding: 2rem;
    text-align: center;
}

/* Footer */
footer {
    background: var(--bg-light);
    border-top: 1px solid var(--border);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-light);
}

footer a {
    color: var(--primary);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    
    .presentations-grid {
        grid-template-columns: 1fr;
    }
    
    .actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}