/* Loading States & Form Enhancements */

/* Loading Spinner */
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.btn-loading::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* Form Validation Styles */
.form-control.is-invalid {
    border-color: #dc3545;
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.form-control.is-valid {
    border-color: #28a745;
    padding-right: calc(1.5em + 0.75rem);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2328a745' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.invalid-feedback {
    display: none;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875em;
    color: #dc3545;
}

.form-control.is-invalid~.invalid-feedback {
    display: block;
}

/* Empty State Styles */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #6c757d;
}

.empty-state-icon {
    font-size: 64px;
    margin-bottom: 20px;
    opacity: 0.3;
}

.empty-state-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 10px;
    color: #2c3e50;
}

.empty-state-description {
    font-size: 16px;
    margin-bottom: 30px;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.empty-state-action {
    margin-top: 20px;
}

/* Tooltip Styles */
.tooltip-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #6c757d;
    color: white;
    font-size: 12px;
    font-weight: bold;
    cursor: help;
    margin-left: 5px;
}

/* Confirmation Modal */
.modal-confirm .modal-header {
    background: linear-gradient(135deg, #dc3545 0%, #c82333 100%);
    color: white;
}

.modal-confirm .modal-body {
    padding: 30px;
    text-align: center;
}

.modal-confirm .modal-icon {
    font-size: 48px;
    color: #dc3545;
    margin-bottom: 20px;
}

/* Success/Error Alerts with Icons */
.alert-with-icon {
    display: flex;
    align-items: center;
    gap: 15px;
}

.alert-with-icon i {
    font-size: 24px;
}

/* Loading Skeleton */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

.skeleton-text {
    height: 16px;
    border-radius: 4px;
    margin-bottom: 10px;
}

.skeleton-card {
    height: 120px;
    border-radius: 8px;
}

/* Improved Button States */
.btn:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.btn:focus {
    box-shadow: 0 0 0 0.2rem rgba(42, 82, 152, 0.25);
}

/* Dark Mode Adjustments */
[data-theme="dark"] .empty-state-title {
    color: var(--text-primary);
}

[data-theme="dark"] .skeleton {
    background: linear-gradient(90deg, #2a2a2a 25%, #3a3a3a 50%, #2a2a2a 75%);
    background-size: 200% 100%;
}

[data-theme="dark"] .tooltip-icon {
    background: #495057;
}