/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    z-index: 9999;
    justify-content: center;
    align-items: center;
}

.loading-spinner {
    text-align: center;
}

/* Improved Empty States */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background: #f8f9fa;
    border-radius: 0.5rem;
    border: 2px dashed #dee2e6;
}

.empty-state-icon {
    font-size: 4rem;
    color: #6c757d;
    margin-bottom: 1rem;
}

.empty-state-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #343a40;
    margin-bottom: 0.5rem;
}

.empty-state-description {
    color: #6c757d;
    margin-bottom: 1.5rem;
}

.empty-state-action {
    margin-top: 1rem;
}

/* Success/Error Messages */
.alert-dismissible {
    padding-right: 3rem;
}

.alert {
    border-radius: 0.375rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.alert-success {
    background-color: #d1e7dd;
    border-color: #badbcc;
    color: #0f5132;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c2c7;
    color: #842029;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffecb5;
    color: #664d03;
}

.alert-info {
    background-color: #cfe2ff;
    border-color: #b6d4fe;
    color: #084298;
}

/* Tooltips */
.tooltip {
    font-size: 0.875rem;
}

.tooltip-inner {
    max-width: 300px;
    padding: 0.5rem 0.75rem;
    background-color: #343a40;
}

/* Button Loading States */
button:disabled {
    cursor: not-allowed;
    opacity: 0.65;
}

.btn-loading {
    pointer-events: none;
}

/* Skeleton Loaders */
.skeleton {
    animation: skeleton-loading 1s linear infinite alternate;
}

@keyframes skeleton-loading {
    0% {
        background-color: hsl(200, 20%, 80%);
    }
    100% {
        background-color: hsl(200, 20%, 95%);
    }
}

.skeleton-text {
    width: 100%;
    height: 0.875rem;
    margin-bottom: 0.5rem;
    border-radius: 0.25rem;
}

.skeleton-text:last-child {
    width: 80%;
}

/* Smooth Transitions */
.card {
    transition: box-shadow 0.3s ease-in-out;
}

.card:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
}

.btn {
    transition: all 0.2s ease-in-out;
}

/* Improved Focus States */
.form-control:focus,
.form-select:focus {
    border-color: #86b7fe;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

/* Status Badges Enhancement */
.badge {
    font-weight: 500;
    padding: 0.35rem 0.65rem;
}

/* Table Enhancements */
.table > :not(caption) > * > * {
    padding: 0.75rem;
}

.table-hover tbody tr:hover {
    background-color: rgba(0, 0, 0, 0.02);
    cursor: pointer;
}

/* Card Enhancements */
.card {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    border: 1px solid rgba(0, 0, 0, 0.125);
}

.card-header {
    background-color: rgba(0, 0, 0, 0.03);
    border-bottom: 1px solid rgba(0, 0, 0, 0.125);
    font-weight: 600;
}

/* Progress Indicators */
.progress-ring {
    display: inline-block;
    position: relative;
}

.progress-ring-circle {
    transition: stroke-dashoffset 0.35s;
    transform: rotate(-90deg);
    transform-origin: 50% 50%;
}

/* Action Icons Enhancement */
.action-icon {
    transition: transform 0.2s ease-in-out;
    cursor: pointer;
}

.action-icon:hover {
    transform: scale(1.1);
}

/* Notification Badge Enhancement */
.notification-badge {
    position: relative;
}

.notification-badge .badge {
    position: absolute;
    top: -5px;
    right: -5px;
    padding: 0.25rem 0.5rem;
    font-size: 0.7rem;
}

/* Loading Dots */
.loading-dots::after {
    content: '.';
    animation: loading-dots 1.5s infinite;
}

@keyframes loading-dots {
    0%, 20% {
        content: '.';
    }
    40% {
        content: '..';
    }
    60%, 100% {
        content: '...';
    }
}

/* Avatar Circle Enhancement */
.avatar-circle {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.875rem;
}

/* Responsive Improvements */
@media (max-width: 768px) {
    .empty-state {
        padding: 3rem 1rem;
    }
    
    .empty-state-icon {
        font-size: 3rem;
    }
    
    .empty-state-title {
        font-size: 1.25rem;
    }
}