:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

.footer {
    margin-top: auto;
}

.card {
    border: none;
    border-radius: 10px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15) !important;
}

.card-header {
    border-radius: 10px 10px 0 0 !important;
    background-color: #f8f9fa;
    border-bottom: 2px solid #dee2e6;
}

.btn {
    border-radius: 8px;
    transition: all 0.3s;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.table {
    border-radius: 8px;
    overflow: hidden;
}

.badge {
    padding: 0.5em 0.75em;
    border-radius: 6px;
}

/* Dashboard specific */
#currentTime {
    font-weight: 300;
    color: var(--primary-color);
}

#runningTime {
    font-weight: 600;
    color: var(--success-color);
}

.progress {
    border-radius: 10px;
}

/* Chat messages */
#chatMessages {
    background-color: #f8f9fa;
    font-size: 0.9rem;
}

#chatMessages pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    background-color: white;
    padding: 8px;
    border-radius: 4px;
    border-left: 3px solid var(--info-color);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    animation: fadeIn 0.3s ease-in;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1rem;
    }
    
    #currentTime {
        font-size: 2rem;
    }
    
    .card-body {
        padding: 1rem;
    }
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0a58ca;
}

/* Time threshold colors */
.time-normal {
    color: var(--success-color);
}

.time-warning {
    color: var(--warning-color);
}

.time-danger {
    color: var(--danger-color);
}