/* Conference Schedule Page Styles */
:root {
    --sobie-primary: #2563eb;
    --sobie-secondary: #1e40af;
    --sobie-accent: #3b82f6;
    --sobie-light: #f8fafc;
    --sobie-dark: #1e293b;
    --sobie-gradient: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--sobie-light);
    color: var(--sobie-dark);
    line-height: 1.6;
}

.header {
    background: var(--sobie-gradient);
    padding: 1rem 0;
    color: white;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.schedule-container {
    max-width: 1200px;
    margin: 2rem auto;
}

.day-header {
    background: var(--sobie-gradient);
    color: white;
    padding: 1.5rem;
    border-radius: 15px 15px 0 0;
    text-align: center;
    margin-bottom: 0;
}

.day-content {
    background: white;
    border-radius: 0 0 15px 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    margin-bottom: 2rem;
}

.event-item {
    border-left: 4px solid #e2e8f0;
    padding: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    position: relative;
}

.event-item:last-child {
    border-bottom: none;
}

.event-item:hover {
    background: rgba(37, 99, 235, 0.02);
    border-left-color: var(--sobie-primary);
}

.event-time {
    font-weight: 600;
    color: var(--sobie-primary);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.event-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--sobie-dark);
}

.event-details {
    color: #6b7280;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
    margin-bottom: 0.5rem;
}

.event-location {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.event-speaker {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-style: italic;
}

.event-description {
    margin-top: 0.5rem;
    color: #4b5563;
}

.track-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.event-type-keynote {
    border-left-color: #dc2626;
    background: linear-gradient(90deg, rgba(220, 38, 38, 0.05) 0%, transparent 100%);
}

.event-type-session {
    border-left-color: #059669;
    background: linear-gradient(90deg, rgba(5, 150, 105, 0.05) 0%, transparent 100%);
}

.event-type-workshop {
    border-left-color: #7c3aed;
    background: linear-gradient(90deg, rgba(124, 58, 237, 0.05) 0%, transparent 100%);
}

.event-type-social {
    border-left-color: #ea580c;
    background: linear-gradient(90deg, rgba(234, 88, 12, 0.05) 0%, transparent 100%);
}

.event-type-meal {
    border-left-color: #10b981;
    background: linear-gradient(90deg, rgba(16, 185, 129, 0.05) 0%, transparent 100%);
}

.event-type-break {
    border-left-color: #6b7280;
    background: linear-gradient(90deg, rgba(107, 114, 128, 0.05) 0%, transparent 100%);
}

.papers-list {
    margin-top: 1rem;
    padding-left: 1rem;
}

.papers-list li {
    margin-bottom: 0.5rem;
    color: #4b5563;
}

.filter-controls {
    background: white;
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    margin-bottom: 2rem;
}

.track-filter {
    cursor: pointer;
    transition: all 0.3s ease;
}

.track-filter.active {
    transform: scale(1.05);
}

.schedule-tabs {
    border-bottom: 2px solid #e2e8f0;
    margin-bottom: 2rem;
}

.schedule-tab {
    background: transparent;
    border: none;
    padding: 1rem 2rem;
    font-weight: 600;
    color: #6b7280;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.schedule-tab.active {
    color: var(--sobie-primary);
    border-bottom-color: var(--sobie-primary);
}

.schedule-tab:hover {
    color: var(--sobie-accent);
}

.legend {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.legend-color {
    width: 16px;
    height: 4px;
    border-radius: 2px;
}

.nav-link {
    color: var(--sobie-primary);
    text-decoration: none;
}

.nav-link:hover {
    color: var(--sobie-secondary);
}

@media (max-width: 768px) {
    .event-details {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .filter-controls {
        text-align: center;
    }
    
    .legend {
        justify-content: center;
    }
}