:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --bg-light: #f9fafb;
    --border-color: #e5e7eb;
    --radius: 8px;
}

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

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

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    color: white;
    padding: 60px 0;
    text-align: center;
    margin-bottom: 40px;
}

.badge {
    background-color: rgba(255, 255, 255, 0.2);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero h1 {
    font-size: 2.25rem;
    margin: 15px 0 10px;
    font-weight: 700;
}

.hero-date {
    font-size: 1.05rem;
    opacity: 0.9;
}

/* Cards */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-bottom: 60px;
}

.card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.card h2 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: #111827;
}

/* Proceedings Box Styling */
.proceedings-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

.year-selector {
    display: flex;
    gap: 15px;
    align-items: center;
}

.active-year {
    font-weight: 600;
    color: var(--primary);
}

.archive-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
}

.archive-link:hover {
    text-decoration: underline;
}

.pdf-download-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    gap: 20px;
    flex-wrap: wrap;
}

.pdf-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.pdf-icon {
    width: 40px;
    height: 40px;
    color: #dc2626; /* PDF Red */
    flex-shrink: 0;
}

.pdf-info h3 {
    font-size: 1rem;
    margin-bottom: 2px;
}

.text-sm {
    font-size: 0.85rem;
}

.text-muted {
    color: var(--text-muted);
}

/* Buttons */
.button-group {
    display: flex;
    gap: 10px;
}

.btn {
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.2s;
}

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

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

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

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

/* Footer */
.footer {
    text-align: center;
    padding: 40px 0;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
}

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