:root {
    --primary: #3A5EA6;
    --primary-dark: #2d4a85;
    --accent: #54A8DC;
    --accent-light: #e8f4f9;
    --accent-lighter: #f5fafd;
    --text-primary: #1a2940;
    --text-secondary: #4a5a6e;
    --text-light: #7a8a9e;
    --bg: #f8fbfd;
    --card-bg: #ffffff;
    --border: #e3edf5;
    --hover: #f0f7fb;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    font-size: 14px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 24px;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border);
}

/* Shared Session Banner */
.shared-session-banner {
    background: linear-gradient(135deg, var(--accent-lighter) 0%, #ffffff 100%);
    border: 2px solid var(--accent);
    border-radius: 12px;
    padding: 16px 20px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    box-shadow: 0 2px 8px rgba(84, 168, 220, 0.15);
    animation: slideDown 0.3s ease;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.shared-session-banner.fade-out {
    opacity: 0;
    transform: translateY(-10px);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.shared-session-banner-content {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.shared-session-banner-content svg {
    width: 24px;
    height: 24px;
    color: var(--accent);
    flex-shrink: 0;
}

.shared-session-banner-content span {
    font-weight: 600;
    color: var(--primary);
    font-size: 0.9375rem;
}

.shared-session-banner-close {
    background: transparent;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all 0.2s;
    flex-shrink: 0;
}

.shared-session-banner-close:hover {
    background: var(--hover);
    color: var(--text-primary);
}

.shared-session-banner-close svg {
    width: 20px;
    height: 20px;
}

.conference-title {
    font-family: 'Inter', serif;
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--primary);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.conference-dates {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* Day Navigation */
.day-nav {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    overflow-x: auto;
    padding-bottom: 8px;
    padding-top: 4px;
}

.day-btn {
    flex: 1;
    min-width: 140px;
    padding: 16px 24px;
    background: var(--card-bg);
    border: 2px solid var(--border);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: inherit;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.day-btn:hover {
    border-color: var(--accent);
    background: var(--hover);
    transform: translateY(-2px);
}

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

.day-btn-label {
    display: block;
    font-size: 0.85rem;
    opacity: 0.8;
    margin-top: 4px;
    font-weight: 400;
}

.day-btn-label {
    display: block;
    font-size: 0.85rem;
    opacity: 0.8;
    margin-top: 4px;
    font-weight: 400;
}

/* Search and Filter Bar */
.search-filter-bar {
    background: var(--card-bg);
    border: 2px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.search-input-wrapper {
    position: relative;
    flex: 1;
}

.search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-light);
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: 14px 48px 14px 48px;
    border: 2px solid var(--border);
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--bg);
    transition: all 0.3s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
    background: white;
    box-shadow: 0 0 0 4px rgba(84, 168, 220, 0.1);
}

.search-input::placeholder {
    color: var(--text-light);
}

.clear-search-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all 0.2s;
}

.clear-search-btn:hover {
    background: var(--hover);
    color: var(--text-primary);
}

.clear-search-btn svg {
    width: 18px;
    height: 18px;
}

.filter-controls {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: center;
}

.filter-dropdown {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 200px;
}

.filter-dropdown label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    white-space: nowrap;
}

.filter-select {
    flex: 1;
    padding: 10px 16px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-family: inherit;
    font-size: 0.9375rem;
    color: var(--text-primary);
    background: white;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(84, 168, 220, 0.1);
}

.filter-select:hover {
    border-color: var(--accent);
}

.reset-filters-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--hover);
    border: 2px solid var(--border);
    border-radius: 10px;
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.reset-filters-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.reset-filters-btn svg {
    width: 18px;
    height: 18px;
}

.search-results-info {
    background: var(--accent-lighter);
    border: 2px solid var(--accent);
    border-radius: 12px;
    padding: 16px 20px;
    margin-bottom: 20px;
    color: var(--primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
}

.search-results-info svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* Highlight matching text */
.highlight {
    background: linear-gradient(120deg, #fff9c4 0%, #fff59d 100%);
    padding: 2px 4px;
    border-radius: 3px;
    font-weight: 600;
}

/* Mobile responsiveness for search/filter */
@media (max-width: 768px) {
    .search-filter-bar {
        padding: 16px;
    }
    
    .filter-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-dropdown {
        flex-direction: column;
        align-items: stretch;
        min-width: 100%;
    }
    
    .filter-dropdown label {
        font-size: 0.875rem;
    }
    
    .reset-filters-btn {
        width: 100%;
        justify-content: center;
    }
}

/* Timeline */
.schedule-timeline {
    position: relative;
    margin-bottom: 80px;
}

.day-title {
    font-family: 'Inter', serif;
    font-size: 1.5rem;
    margin-bottom: 32px;
    color: var(--primary);
}

/* Event Card */
.event-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.event-card:hover {
    box-shadow: 0 8px 30px rgba(84, 168, 220, 0.12);
    transform: translateY(-2px);
}

.event-header {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px 28px;
    border-bottom: 1px solid var(--border);
}

.event-time {
    min-width: 140px;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.event-time-range {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-light);
    font-weight: 400;
    margin-top: 2px;
}

.event-main {
    flex: 1;
}

.event-type-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.badge-registration { background: #e3f2fd; color: #1565c0; }
.badge-session { background: #e8f4f9; color: #3A5EA6; }
.badge-meal { background: #fff3e0; color: #e65100; }
.badge-break { background: #f3e5f5; color: #6a1b9a; }
.badge-networking { background: #fce4ec; color: #c2185b; }
.badge-expo { background: #e0f2f1; color: #00695c; }
.badge-special_event { background: #fff9c4; color: #f57f17; }

.event-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 4px;
}

.event-location {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: 0.8125rem;
}

.event-location svg {
    width: 16px;
    height: 16px;
}

/* Simple Event Content */
.simple-event-content {
    padding: 24px 28px;
}

.simple-event-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

.sponsor-banner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px 28px;
    background: linear-gradient(135deg, var(--accent-lighter) 0%, #ffffff 100%);
    border-bottom: 2px solid var(--accent);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.sponsor-banner::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.sponsor-logo {
    height: 120px;
    max-width: 240px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.sponsor-presents {
    font-size: 0.6875rem;
    color: var(--text-light);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sponsor-presents::before,
.sponsor-presents::after {
    content: '';
    height: 1px;
    width: 30px;
    background: var(--text-light);
    opacity: 0.3;
}

.sponsor-name {
    font-size: 1rem;
    color: var(--primary);
    font-weight: 700;
    letter-spacing: 0.02em;
}

/* Sponsored event card styling */
.event-card.sponsored {
    border: 2px solid var(--accent);
    box-shadow: 0 2px 8px rgba(84, 168, 220, 0.1);
}

/* Session Block Content */
.session-block-content {
    padding: 28px;
}

.sessions-grid {
    display: grid;
    gap: 32px;
}

.session-card {
    background: var(--accent-lighter);
    border: 2px solid var(--border);
    border-left: 4px solid var(--accent);
    border-radius: 12px;
    padding: 24px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.session-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.session-card:hover {
    background: white;
    box-shadow: 0 4px 12px rgba(84, 168, 220, 0.08);
    border-left-color: var(--primary);
    transform: translateX(4px);
}

.session-card:hover::before {
    opacity: 1;
}

.session-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.session-track {
    padding: 4px 10px;
    background: var(--primary);
    color: white;
    border-radius: 4px;
    font-size: 0.6875rem;
    font-weight: 600;
}

.session-type {
    padding: 4px 10px;
    background: var(--accent);
    color: white;
    border-radius: 4px;
    font-size: 0.6875rem;
    font-weight: 600;
}

.session-type-badge {
    padding: 4px 10px;
    background: #e8f4f9;
    color: #3A5EA6;
    border-radius: 4px;
    font-size: 0.6875rem;
    font-weight: 600;
}

.session-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.session-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
    font-size: 0.875rem;
}

.session-details {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.session-detail {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: 0.8125rem;
}

.session-detail svg {
    width: 16px;
    height: 16px;
}

/* Speakers */
.session-speakers {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.speaker {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    align-items: center;
}

.speaker:hover {
    background: var(--hover);
}

.speaker:last-child {
    margin-bottom: 0;
}

.speaker-avatar {
    flex-shrink: 0;
}

.speaker-avatar-img {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border);
}

.speaker-avatar-placeholder {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 1rem;
    border: 2px solid var(--border);
}

.speaker-info {
    flex: 1;
    min-width: 0;
}

.speaker-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9375rem;
    margin-bottom: 2px;
}

.speaker-title {
    color: var(--text-secondary);
    font-size: 0.8125rem;
    margin-bottom: 2px;
}

.speaker-company {
    color: var(--text-light);
    font-size: 0.8125rem;
    margin-bottom: 8px;
}

.speaker-role-badge {
    flex-shrink: 0;
    padding: 6px 12px;
    background: var(--primary);
    color: white;
    border-radius: 6px;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.speaker-bio {
    color: var(--text-secondary);
    font-size: 0.8125rem;
    line-height: 1.6;
    margin-bottom: 8px;
}

.speaker-linkedin {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent);
    font-size: 0.75rem;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.speaker-linkedin:hover {
    color: var(--primary);
}

.speaker-linkedin svg {
    width: 16px;
    height: 16px;
}

/* Loading State */
.loading-state {
    text-align: center;
    padding: 80px 20px;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-state p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Error State */
.error-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 24px 16px;
    }
    
    .shared-session-banner {
        padding: 12px 16px;
        margin-bottom: 20px;
    }
    
    .shared-session-banner-content span {
        font-size: 0.875rem;
    }
    
    .shared-session-banner-content svg {
        width: 20px;
        height: 20px;
    }
    
    .header {
        margin-bottom: 40px;
        padding-bottom: 32px;
    }
    
    .conference-title {
        font-size: 1.75rem;
    }
    
    .day-nav {
        gap: 8px;
    }
    
    .day-btn {
        min-width: 120px;
        padding: 12px 16px;
        font-size: 0.75rem;
    }
    
    .event-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .event-time {
        min-width: auto;
    }
    
    .session-details {
        flex-direction: column;
        gap: 12px;
    }
    
    .speaker {
        flex-wrap: wrap;
        gap: 12px;
    }
    
    .speaker-role-badge {
        width: 100%;
        text-align: center;
        order: 3;
    }
    
    .sponsor-banner {
        padding: 16px 20px;
    }
    
    .sponsor-logo {
        max-width: 160px;
        height: 36px;
    }
}

/* Speaker Modal */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 41, 64, 0.8);
    z-index: 1000;
    backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease;
}

.modal-overlay.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal {
    background: var(--card-bg);
    border-radius: 16px;
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 32px 32px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.2s;
    margin-left: 16px;
    flex-shrink: 0;
}

.modal-close:hover {
    background: var(--hover);
    color: var(--text-primary);
}

.modal-close svg {
    width: 24px;
    height: 24px;
}

.modal-speaker-header {
    display: flex;
    gap: 20px;
    flex: 1;
}

.modal-speaker-avatar {
    flex-shrink: 0;
}

.modal-speaker-avatar-img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--border);
}

.modal-speaker-avatar-placeholder {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 2rem;
    border: 3px solid var(--border);
}

.modal-speaker-info {
    flex: 1;
    min-width: 0;
}

.modal-speaker-name {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
    line-height: 1.3;
}

.modal-speaker-title {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.modal-speaker-company {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 16px;
}

.modal-body {
    padding: 32px;
}

.modal-speaker-bio {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.9375rem;
    margin-bottom: 24px;
}

.modal-speaker-linkedin {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: white;
    background: var(--primary);
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all 0.2s;
}

.modal-speaker-linkedin:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(58, 94, 166, 0.3);
}

.modal-speaker-linkedin svg {
    width: 20px;
    height: 20px;
}

@media (max-width: 768px) {
    .modal {
        max-height: 95vh;
        margin: 10px;
    }
    
    .modal-header {
        padding: 24px 24px 20px;
    }
    
    .modal-speaker-header {
        flex-direction: column;
    }
    
    .modal-speaker-avatar-img,
    .modal-speaker-avatar-placeholder {
        width: 80px;
        height: 80px;
    }
    
    .modal-speaker-name {
        font-size: 1.25rem;
    }
    
    .modal-body {
        padding: 24px;
    }
}

/* Session Share Button */
.session-share-btn {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    font-weight: 600;
    cursor: pointer;
    padding: 8px;
    margin-bottom: 18px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
}

.session-share-btn:hover {
    border-color: var(--primary);
    background: var(--hover);
    color: var(--primary);
    transform: scale(1.05);
}

.session-share-btn svg {
    width: 18px;
    height: 18px;
}

/* Event Sign-up Button */
.event-signup-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--primary);
    color: white;
    border: none;
    padding: 14px 24px;
    border-radius: 10px;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    margin: 16px 20px 20px;
}

.event-signup-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(58, 94, 166, 0.3);
}

.event-signup-btn svg {
    width: 20px;
    height: 20px;
}

/* Share Feedback Toast */
.share-feedback {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--primary);
    color: white;
    padding: 16px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.9375rem;
    box-shadow: 0 8px 24px rgba(58, 94, 166, 0.4);
    z-index: 10000;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 10px;
}

.share-feedback svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.share-feedback.show {
    transform: translateX(-50%) translateY(0);
}

/* Session Modal Specific Styles */
.session-modal {
    max-width: 900px;
}

.modal-session-title {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 16px;
    line-height: 1.3;
}

.modal-session-details {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    margin-top: 12px;
}

.modal-session-detail {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.modal-session-detail svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.modal-session-description {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1rem;
    margin-bottom: 32px;
}

.modal-section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border);
}

/* Collapsible Speaker */
.modal-speakers-section {
    margin-bottom: 32px;
}

.collapsible-speaker {
    background: var(--accent-lighter);
    border: 2px solid var(--border);
    border-radius: 12px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.collapsible-speaker:hover {
    border-color: var(--accent);
}

.collapsible-speaker.expanded {
    background: white;
    border-color: var(--primary);
}

.collapsible-speaker-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    transition: background 0.2s;
}

.collapsible-speaker-header:hover {
    background: var(--hover);
}

.expand-icon {
    margin-left: auto;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: white;
    border: 2px solid var(--border);
    transition: all 0.3s ease;
}

.expand-icon svg {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
    transition: transform 0.3s ease;
}

.collapsible-speaker.expanded .expand-icon {
    background: var(--primary);
    border-color: var(--primary);
}

.collapsible-speaker.expanded .expand-icon svg {
    color: white;
    transform: rotate(180deg);
}

.collapsible-speaker-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.collapsible-speaker.expanded .collapsible-speaker-content {
    max-height: 500px;
    padding: 0 20px 20px;
}

.collapsible-speaker .speaker-bio {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: 16px;
}

.collapsible-speaker .speaker-linkedin {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: white;
    background: var(--primary);
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.collapsible-speaker .speaker-linkedin:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(58, 94, 166, 0.3);
}

.collapsible-speaker .speaker-linkedin svg {
    width: 18px;
    height: 18px;
}

/* Modal Share Section */
.modal-share-section {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 2px solid var(--border);
    text-align: center;
}

.modal-share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: var(--accent);
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.modal-share-btn:hover {
    background: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(58, 94, 166, 0.3);
}

.modal-share-btn svg {
    width: 20px;
    height: 20px;
}

@media (max-width: 768px) {
    .session-modal {
        max-width: 100%;
    }
    
    .modal-session-title {
        font-size: 1.5rem;
    }
    
    .modal-session-details {
        flex-direction: column;
        gap: 12px;
    }
    
    .collapsible-speaker-header {
        flex-wrap: wrap;
    }
    
    .expand-icon {
        order: -1;
        margin-left: 0;
    }
    
    .speaker-role-badge {
        width: 100%;
        text-align: center;
    }
}