.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 20px;
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(-50px);
    transition: transform 0.3s ease;
}

.modal.show .modal-content {
    transform: translateY(0);
}

.modal-header {
    padding: 24px 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
    display: flex;
    align-items: center;
    gap: 8px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #6b7280;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: #f3f4f6;
    color: #374151;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 0 24px 24px;
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

.modal-footer-links {
    margin-top: 16px;
    text-align: center;
    border-top: 1px solid #e5e7eb;
    padding-top: 16px;
}

.modal-footer-links a {
    color: #3b82f6;
    text-decoration: none;
    font-size: 0.875rem;
    display: block;
    margin: 4px 0;
}

.modal-footer-links a:hover {
    text-decoration: underline;
}

.form-group {
    margin-bottom: 16px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: #374151;
    font-size: 0.875rem;
}

.form-input {
    width: 100%;
    padding: 12px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.form-input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input:invalid {
    border-color: #ef4444;
}

.form-group small {
    display: block;
    margin-top: 4px;
    color: #6b7280;
    font-size: 0.75rem;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    line-height: 1.4;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
    flex-shrink: 0;
    margin-top: 2px;
}

.form-actions {
    margin-top: 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.875rem;
    line-height: 1;
}

.btn-primary {
    background: #3b82f6;
    color: white;
}

.btn-primary:hover {
    background: #2563eb;
}

.btn-outline {
    background: transparent;
    color: #3b82f6;
    border: 1px solid #3b82f6;
}

.btn-outline:hover {
    background: #3b82f6;
    color: white;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.btn-sm {
    padding: 8px 12px;
    font-size: 0.75rem;
}

.btn-large {
    padding: 16px 24px;
    font-size: 1rem;
}

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 400px;
}

.toast {
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-left: 4px solid;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast.hide {
    opacity: 0;
    transform: translateX(100%);
}

.toast-success {
    border-left-color: #10b981;
}

.toast-error {
    border-left-color: #ef4444;
}

.toast-warning {
    border-left-color: #f59e0b;
}

.toast-info {
    border-left-color: #3b82f6;
}

.toast-content {
    padding: 16px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.toast-content i {
    flex-shrink: 0;
    margin-top: 2px;
}

.toast-success .toast-content i {
    color: #10b981;
}

.toast-error .toast-content i {
    color: #ef4444;
}

.toast-warning .toast-content i {
    color: #f59e0b;
}

.toast-info .toast-content i {
    color: #3b82f6;
}

.toast-message {
    flex: 1;
    font-size: 0.875rem;
    color: #374151;
    line-height: 1.4;
}

.toast-close {
    background: none;
    border: none;
    color: #6b7280;
    cursor: pointer;
    padding: 2px;
    border-radius: 4px;
    font-size: 0.75rem;
    flex-shrink: 0;
}

.toast-close:hover {
    background: #f3f4f6;
    color: #374151;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    z-index: 1200;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.loading-overlay.show {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    text-align: center;
    color: #6b7280;
}

.loading-spinner i {
    font-size: 2rem;
    margin-bottom: 12px;
    color: #3b82f6;
}

.loading-spinner p {
    margin: 0;
    font-size: 0.875rem;
}

body.modal-open {
    overflow: hidden;
}

@media (max-width: 768px) {
    .modal {
        padding: 10px;
    }
    
    .modal-content {
        max-height: 95vh;
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding-left: 16px;
        padding-right: 16px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .toast-container {
        left: 10px;
        right: 10px;
        top: 10px;
        max-width: none;
    }
}