:root {
    --primary-color: #2c5aa0;
    --secondary-color: #2c5aa0;
    --accent-color: #ff9f43;
    --bg-soft: #f8f9fa;
    --text-dark: #2d3436;
    --text-muted: #636e72;
    --glass-bg: rgba(255, 255, 255, 0.95);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

a:hover {
    color: #fff;
    text-decoration: none;
}

/* Section Header */
.scientific-sessions-header h2 {
    font-weight: 800;
    /* color: var(--primary-color); */
    background: #2c5aa0 !important;
    letter-spacing: -1px;
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
}

.scientific-sessions-header h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--secondary-color);
    border-radius: 2px;
}

/* Accordion Wrapper */
.panel-group .panel {
    border: none;
    box-shadow: var(--shadow-sm);
    margin-bottom: 20px;
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
    background: var(--glass-bg);
}

.panel-group .panel:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* Accordion Heading */
.panel-heading {
    padding: 0 !important;
    background: #2c5aa0 !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05) !important;
}

.panel-title a {
    display: block;
    padding: 20px 25px;
    font-size: 1.25rem;
    font-weight: 700;
    color: white !important;
    text-decoration: none;
    position: relative;
    transition: var(--transition);
}

.panel-title a:after {
    content: '\f107';
    font-family: 'FontAwesome';
    position: absolute;
    right: 25px;
    top: 50%;
    transform: translateY(-50%);
    transition: var(--transition);
    opacity: 0.5;
}

.panel-title a[aria-expanded="true"] {
    background: #2c5aa0 !important;
    color: white;
}

.panel-title a[aria-expanded="true"]:after {
    transform: translateY(-50%) rotate(180deg);
    opacity: 1;
}

/* Table Design */
.table-responsive {
    border: none;
    padding: 20px;
}

.table {
    border-collapse: separate;
    border-spacing: 0 10px;
    background: transparent;
}

.table thead th {
    background: var(--bg-soft);
    color: var(--primary-color);
    border: none !important;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
    padding: 15px 20px;
    font-weight: 700;
}

.table tbody tr {
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
    transition: var(--transition);
    border-radius: 8px;
}

.table tbody tr:hover {
    background: var(--bg-soft);
    transform: scale(1.005);
}

.table tbody td {
    border: none !important;
    padding: 20px;
    vertical-align: middle;
    color: #000000;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Specific Column Styling */
.table td:first-child {
    font-weight: 700;
    color: #000000;
    border-radius: 8px 0 0 8px;
}

.table td:last-child {
    border-radius: 0 8px 8px 0;
}

/* Sub-session Table */
.sub-session-table {
    margin: 0;
    width: 100%;
    border-spacing: 0;
}

.sub-session-table tbody tr {
    background: rgba(44, 90, 160, 0.03);
    box-shadow: none;
    margin-bottom: 5px;
}

.sub-session-table tbody tr:hover {
    background: rgba(44, 90, 160, 0.05);
}

.sub-session-table td {
    padding: 12px 15px !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.03) !important;
    color: #000000 !important;
}

/* Special Tags / Sessions */
.session-tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 5px;
}

.tag-break {
    background: #feeaa7;
    color: #d35400;
}

.tag-plenary {
    background: #dff9fb;
    color: #130f40;
}

.tag-parallel {
    background: #f1f2f6;
    color: #2f3542;
}

/* Micro-animations */
@keyframes fadeInSlide {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.panel-collapse.in {
    animation: fadeInSlide 0.4s ease-out;
}

/* Responsive Tweaks */
@media (max-width: 768px) {
    .table thead {
        display: none;
    }

    .table tbody tr {
        display: block;
        margin-bottom: 20px;
        padding: 15px;
    }

    .table tbody td {
        display: block;
        width: 100% !important;
        padding: 10px 0;
    }

    .table td:first-child {
        color: var(--secondary-color);
        font-size: 1.1rem;
    }
}