:root {
    --primary-color: #1a5f7a;
    --secondary-color: #457b9d;
    --success-color: #2d6a4f;
    --danger-color: #9b2c2c;
    --warning-color: #c05621;
    --info-color: #2c5282;
    --background-color: #ffffff;
    --text-color: #2d3748;
    --border-color: #e2e8f0;
}

.modal-open {
    overflow: hidden;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1050;
    display: none;
    width: 100%;
    height: 100%;
    overflow: hidden;
    outline: 0;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-dialog {
    position: relative;
    width: auto;
    margin: 1.75rem auto;
    max-width: 500px;
    pointer-events: none;
}

.modal.show .modal-dialog {
    transform: none;
}

.modal.fade .modal-dialog {
    transition: transform 0.3s ease-out;
    transform: translate(0, -50px);
}

.modal-content {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    pointer-events: auto;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header.bg-success {
    background-color: var(--success-color) !important;
}

.modal-header.bg-danger {
    background-color: var(--danger-color) !important;
}

.modal-title {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: #ffffff;
}

.modal-body {
    position: relative;
    flex: 1 1 auto;
    padding: 1.5rem;
    color: var(--text-color);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    padding: 1.25rem;
    border-top: 1px solid var(--border-color);
    gap: 0.5rem;
}

.btn-close {
    padding: 0.5rem;
    background: transparent;
    border: none;
    color: #ffffff;
    opacity: 0.8;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-close:hover {
    opacity: 1;
}

.btn {
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-success {
    background-color: var(--success-color);
    color: #ffffff;
}

.btn-success:hover {
    background-color: #1a4731;
}

.btn-danger {
    background-color: var(--danger-color);
    color: #ffffff;
}

.btn-danger:hover {
    background-color: #7b1d1d;
}

.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 0.375rem;
}

.alert-info {
    background-color: #ebf8ff;
    border-color: var(--info-color);
    color: var(--info-color);
}

.alert-danger {
    background-color: #fff5f5;
    border-color: var(--danger-color);
    color: var(--danger-color);
}

.alert-warning {
    background-color: #fffaf0;
    border-color: var(--warning-color);
    color: var(--warning-color);
}

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1040;
    width: 100vw;
    height: 100vh;
    background-color: #000;
}

.modal-backdrop.fade {
    opacity: 0;
}

.modal-backdrop.show {
    opacity: 0.5;
}

@media (max-width: 576px) {
    .modal-dialog {
        margin: 0.5rem;
    }
}