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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

/* ============ LOGIN PAGE ============ */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-box h1 {
    color: #333;
    margin-bottom: 10px;
    font-size: 28px;
    text-align: center;
}

.subtitle {
    text-align: center;
    color: #999;
    margin-bottom: 30px;
    font-size: 14px;
}

.error-message {
    background-color: #fee;
    color: #c33;
    padding: 12px;
    border-radius: 5px;
    margin-bottom: 20px;
    border-left: 4px solid #c33;
    font-size: 14px;
}

.login-form {
    display: flex;
    flex-direction: column;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 5px rgba(102, 126, 234, 0.3);
}

.login-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.login-btn:active {
    transform: translateY(0);
}

.footer-text {
    text-align: center;
    margin-top: 20px;
    color: #999;
    font-size: 12px;
}

/* ============ DASHBOARD PAGE ============ */
.dashboard-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background-color: #f5f5f5;
}

.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.navbar-title {
    font-size: 24px;
    font-weight: 700;
    margin: 0;
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-greeting {
    font-size: 14px;
    opacity: 0.9;
}

.logout-btn {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 8px 16px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 5px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.logout-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
}

.dashboard-content {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 30px;
    width: 100%;
}

.dashboard-header {
    margin-bottom: 40px;
}

.dashboard-header h1 {
    color: #333;
    font-size: 32px;
    margin-bottom: 10px;
}

.dashboard-subtitle {
    color: #999;
    font-size: 16px;
}

.dashboard-body {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.welcome-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-left: 4px solid #667eea;
}

.welcome-card h2 {
    color: #333;
    margin-bottom: 15px;
    font-size: 20px;
}

.welcome-card p {
    color: #666;
    line-height: 1.6;
    font-size: 14px;
}

.menu-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-left: 4px solid #764ba2;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.menu-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.menu-icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.menu-card h3 {
    color: #333;
    margin-bottom: 10px;
    font-size: 18px;
}

.menu-card p {
    color: #666;
    margin-bottom: 20px;
    font-size: 14px;
}

.menu-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
}

.menu-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
    .login-box {
        padding: 30px 20px;
    }
    
    .navbar-content {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .navbar-user {
        width: 100%;
        justify-content: space-between;
    }
    
    .dashboard-content {
        padding: 20px 15px;
    }
    
    .dashboard-header h1 {
        font-size: 24px;
    }
}

/* ============ PARTICIPANT LOGIN PAGE ============ */
.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 28px;
    color: #333;
    margin-bottom: 8px;
}

.login-info {
    background-color: #f0f8ff;
    border-left: 4px solid #667eea;
    padding: 15px;
    border-radius: 5px;
    margin-top: 25px;
    font-size: 14px;
    color: #666;
    line-height: 1.5;
}

.admin-link {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.admin-login-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.3s ease;
}

.admin-login-link:hover {
    color: #764ba2;
    text-decoration: underline;
}

/* ============ PARTICIPANT DASHBOARD PAGE ============ */
.participant-dashboard-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.participant-navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.dashboard-content {
    flex: 1;
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 30px;
    width: 100%;
}

.dashboard-header {
    margin-bottom: 40px;
}

.dashboard-header h1 {
    color: #333;
    font-size: 32px;
    margin-bottom: 10px;
}

.dashboard-subtitle {
    color: #999;
    font-size: 16px;
}

/* ============ PARTICIPANT CARDS ============ */
.card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    margin-bottom: 25px;
    border-top: 4px solid #667eea;
}

.card h2 {
    color: #333;
    margin-bottom: 25px;
    font-size: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f0f0f0;
}

/* ============ IDENTITY CARD ============ */
.identity-card {
    border-top-color: #667eea;
}

.identity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 25px;
}

.identity-item {
    padding-bottom: 15px;
}

.identity-item label {
    display: block;
    color: #999;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    font-weight: 600;
}

.identity-value {
    color: #333;
    font-size: 18px;
    font-weight: 600;
    margin: 0;
}

.photo-section {
    padding-top: 20px;
    border-top: 2px solid #f0f0f0;
}

.photo-section label {
    display: block;
    color: #999;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 15px;
    font-weight: 600;
}

.photo-container {
    display: flex;
    justify-content: center;
    padding: 15px;
    background-color: #f9f9f9;
    border-radius: 8px;
}

.identity-photo {
    max-width: 250px;
    max-height: 300px;
    border-radius: 8px;
    object-fit: cover;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* ============ EXAM CARD ============ */
.exam-card {
    border-top-color: #764ba2;
}

.exam-section {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #f0f0f0;
}

.exam-section:last-child {
    border-bottom: none;
}

.exam-section label {
    display: block;
    color: #999;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
    font-weight: 600;
}

.exam-value {
    color: #333;
    font-size: 16px;
    font-weight: 500;
    margin: 0;
}

.schedule-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.schedule-item {
    padding: 15px;
    background-color: #f9f9f9;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.schedule-item label {
    display: block;
    color: #666;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 10px;
    text-transform: none;
    letter-spacing: normal;
}

/* ============ STATUS BADGE ============ */
.status-section {
    margin-bottom: 20px;
}

.status-badge {
    display: inline-block;
    padding: 12px 20px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    width: 100%;
    text-align: center;
}

.status-badge.pending {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffc107;
}

.status-badge.active {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #28a745;
    animation: pulse 2s infinite;
}

.status-badge.completed {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #17a2b8;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.7);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(40, 167, 69, 0);
    }
}

/* ============ EXAM ACTION ============ */
.exam-action {
    margin-top: 25px;
    text-align: center;
}

.start-exam-btn {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    padding: 16px 40px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    font-size: 16px;
    display: inline-block;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
}

.start-exam-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.5);
}

.exam-info-box {
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
    text-align: center;
    font-size: 15px;
    line-height: 1.6;
}

.pending-info {
    background-color: #fff3cd;
    color: #856404;
    border-left: 4px solid #ffc107;
}

.completed-info {
    background-color: #d4edda;
    color: #155724;
    border-left: 4px solid #28a745;
}

/* ============ INFO CARD ============ */
.info-card {
    border-top-color: #17a2b8;
    margin-top: 30px;
}

.instructions-list {
    list-style: none;
    padding: 0;
}

.instructions-list li {
    padding: 12px 0;
    padding-left: 30px;
    position: relative;
    color: #666;
    font-size: 14px;
    line-height: 1.6;
    border-bottom: 1px solid #f0f0f0;
}

.instructions-list li:last-child {
    border-bottom: none;
}

.instructions-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
    font-size: 16px;
}

/* ============ EMPTY STATE ============ */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: #999;
}

.empty-state p {
    font-size: 16px;
    margin: 0;
}

.empty-state a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

.empty-state a:hover {
    text-decoration: underline;
}

.empty-session-card {
    background-color: #fff3cd;
    border-left: 4px solid #ffc107;
    padding: 25px;
}

.empty-session-card p {
    color: #856404;
    font-size: 15px;
    line-height: 1.6;
    margin: 0;
}

/* ============ PARTICIPANT RESPONSIVE ============ */
/* ============ MONITORING STATUS ============ */
.monitoring-section {
    background-color: #e8f4f8;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid #17a2b8;
}

.monitoring-status {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: #0c5460;
    font-weight: 500;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.status-indicator.monitoring-active {
    background-color: #28a745;
    animation: monitoring-pulse 1.5s infinite;
}

@keyframes monitoring-pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

.exam-warning {
    background-color: #fff3cd;
    color: #856404;
    padding: 12px;
    border-radius: 5px;
    margin-top: 15px;
    font-size: 13px;
    border-left: 4px solid #ffc107;
    margin: 15px 0 0 0;
}

/* ============ MONITORING ALERTS ============ */
.monitoring-alert {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    border: 2px solid #dc3545;
    border-radius: 8px;
    padding: 15px;
    max-width: 300px;
    box-shadow: 0 4px 20px rgba(220, 53, 69, 0.3);
    z-index: 9999;
    animation: slideInRight 0.3s ease-out;
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.monitoring-alert.success {
    border-color: #28a745;
    background-color: #d4edda;
}

.monitoring-alert.warning {
    border-color: #ffc107;
    background-color: #fff3cd;
}

.monitoring-alert.danger {
    border-color: #dc3545;
    background-color: #f8d7da;
}

/* ============ CUSTOM ALERT MODAL ============ */
.exam-alert-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeIn 0.3s ease-out;
}

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

.exam-alert-box {
    background: white;
    border-radius: 12px;
    padding: 30px;
    max-width: 400px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    text-align: center;
    animation: popIn 0.3s ease-out;
    border-top: 4px solid #dc3545;
}

@keyframes popIn {
    from {
        transform: scale(0.95) translateY(-20px);
        opacity: 0;
    }
    to {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

.exam-alert-box h2 {
    color: #dc3545;
    margin-bottom: 15px;
    font-size: 20px;
}

.exam-alert-box p {
    color: #333;
    margin-bottom: 20px;
    font-size: 14px;
    line-height: 1.5;
}

.exam-alert-btn {
    background-color: #dc3545;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.exam-alert-btn:hover {
    background-color: #c82333;
}

.exam-alert-btn:active {
    transform: scale(0.98);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
    .exam-alert-box {
        margin: 20px;
        max-width: 90%;
    }
    
    .monitoring-alert {
        top: auto;
        bottom: 20px;
        right: 10px;
        left: 10px;
        max-width: none;
    }
}

/* ============ ADMIN SESSION PAGE ============ */
.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.back-btn {
    background-color: #666;
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.back-btn:hover {
    background-color: #555;
}

.form-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
}

.form-card h2 {
    color: #333;
    margin-bottom: 25px;
    font-size: 20px;
}

.session-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    color: #333;
    font-weight: 500;
    margin-bottom: 8px;
    font-size: 14px;
}

.form-group input {
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 5px rgba(102, 126, 234, 0.3);
}

.submit-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    align-self: flex-start;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.cancel-btn {
    background-color: #999;
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.cancel-btn:hover {
    background-color: #777;
    transform: translateY(-2px);
}

/* ============ SELECT STYLING ============ */
select {
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
    transition: all 0.3s ease;
}

select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 5px rgba(102, 126, 234, 0.3);
}

/* ============ FILE INPUT STYLING ============ */
input[type="file"] {
    padding: 10px;
    border: 2px dashed #ddd;
    border-radius: 5px;
    font-size: 14px;
    transition: all 0.3s ease;
    cursor: pointer;
}

input[type="file"]:hover {
    border-color: #667eea;
    background-color: #fafafa;
}

input[type="file"]::file-selector-button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    margin-right: 10px;
}

input[type="file"]::file-selector-button:hover {
    transform: translateY(-2px);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: #999;
    font-size: 12px;
}

/* ============ PARTICIPANT PAGE ============ */
.participants-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.participants-card h2 {
    color: #333;
    margin-bottom: 25px;
    font-size: 20px;
}

.participants-table {
    overflow-x: auto;
}

.participants-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.participants-table th {
    background-color: #f5f5f5;
    padding: 15px;
    text-align: left;
    color: #333;
    font-weight: 600;
    border-bottom: 2px solid #ddd;
}

.participants-table td {
    padding: 15px;
    border-bottom: 1px solid #eee;
    color: #666;
}

.participants-table tr:hover {
    background-color: #fafafa;
}

.photo-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.photo-link:hover {
    color: #764ba2;
    text-decoration: underline;
}

.no-photo {
    color: #999;
    font-style: italic;
}

.current-photo {
    margin: 10px 0;
    padding: 10px;
    background-color: #f9f9f9;
    border-radius: 5px;
}

.current-photo img {
    display: inline-block;
}

/* ============ PARTICIPANT FORM ============ */
.participant-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

@media (max-width: 768px) {
    .participants-table {
        font-size: 12px;
    }
    
    .participants-table th,
    .participants-table td {
        padding: 10px;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .edit-btn,
    .delete-btn {
        width: 100%;
        text-align: center;
    }
}

.sessions-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.sessions-card h2 {
    color: #333;
    margin-bottom: 25px;
    font-size: 20px;
}

.sessions-table {
    overflow-x: auto;
}

.sessions-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.sessions-table th {
    background-color: #f5f5f5;
    padding: 15px;
    text-align: left;
    color: #333;
    font-weight: 600;
    border-bottom: 2px solid #ddd;
}

.sessions-table td {
    padding: 15px;
    border-bottom: 1px solid #eee;
    color: #666;
}

.sessions-table tr:hover {
    background-color: #fafafa;
}

.url-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.url-link:hover {
    color: #764ba2;
    text-decoration: underline;
}

.delete-form {
    display: inline;
}

.delete-btn {
    background-color: #dc3545;
    color: white;
    padding: 6px 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.delete-btn:hover {
    background-color: #c82333;
}

.action-buttons {
    display: flex;
    gap: 8px;
    align-items: center;
}

.edit-btn {
    background-color: #007bff;
    color: white;
    padding: 6px 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s ease;
}

.edit-btn:hover {
    background-color: #0056b3;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: #999;
    font-size: 16px;
}

.error-message {
    background-color: #fee;
    color: #c33;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 30px;
    border-left: 4px solid #c33;
    font-size: 14px;
}

@media (max-width: 768px) {
    .header-top {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .sessions-table {
        font-size: 12px;
    }
    
    .sessions-table th,
    .sessions-table td {
        padding: 10px;
    }
}