/* ==========================================================================
   Concrator Design System — Shared Components
   ========================================================================== */

/* ---------- Buttons ---------------------------------------------------- */

.btn {
    display: inline-block;
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-weight: 500;
    font-family: var(--font-sans);
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background-color 0.15s;
    margin-right: 0.5rem;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--color-primary-hover);
}

.btn-secondary {
    background: var(--color-surface-hover);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-border);
}

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

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

.btn-small {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 0.25rem;
    font-size: 1rem;
    line-height: 1;
}

.btn-icon:hover {
    color: var(--color-danger);
}

.btn-link {
    background: none;
    border: none;
    color: var(--color-primary);
    cursor: pointer;
    padding: 0;
    font-size: 0.875rem;
    text-decoration: underline;
    display: inline;
    font-family: inherit;
}

.btn-link:hover {
    opacity: 0.8;
}

/* ---------- Forms ------------------------------------------------------ */

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.375rem;
    color: var(--color-text-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    max-width: 500px;
    padding: 0.625rem 0.75rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    font-size: 0.9375rem;
    font-family: var(--font-sans);
    transition: border-color 0.15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-group input:disabled {
    opacity: 0.5;
}

.form-check label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    cursor: pointer;
}

.form-check input[type="checkbox"] {
    width: auto;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
    color: var(--color-text);
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
}

.search-bar {
    display: flex;
    gap: 0.5rem;
    align-items: end;
    margin-bottom: 1rem;
}

.search-bar input {
    max-width: 400px;
}

.inline-form {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin: 1rem 0;
}

/* ---------- Alerts ----------------------------------------------------- */

.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #86efac;
}

.alert code {
    background: rgba(0, 0, 0, 0.3);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
}

.field-error {
    display: block;
    font-size: 0.8125rem;
    color: #fca5a5;
    margin-top: 0.25rem;
}

.form-hint {
    display: block;
    margin-top: 0.375rem;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.form-hint code {
    background: var(--color-surface-hover);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.85em;
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

/* ---------- Tables ----------------------------------------------------- */

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.data-table thead tr,
.data-table tbody tr {
    border-bottom: 1px solid var(--color-border);
}

.data-table th,
.data-table td {
    padding: 0.625rem 0.75rem;
    text-align: left;
    font-size: 0.875rem;
}

.data-table th {
    color: var(--color-text-muted);
    font-weight: 500;
}

.data-table code {
    background: var(--color-bg);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
}

.data-table td.table-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.data-table .table-actions-form {
    display: inline;
    margin: 0;
    padding: 0;
    background: none;
    border: none;
}

.data-table .col-actions {
    white-space: nowrap;
    text-align: right;
    width: 1%;
}

.data-table .col-actions > * {
    vertical-align: middle;
}

.data-table .col-check {
    width: 40px;
    text-align: center;
}

.data-table .col-check input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

/* ---------- Badges ----------------------------------------------------- */

.badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-success {
    background: rgba(34, 197, 94, 0.15);
    color: #86efac;
}

.badge-danger {
    background: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
}

.badge-warning {
    background: rgba(251, 191, 36, 0.15);
    color: #fcd34d;
}

.badge-muted {
    background: rgba(148, 163, 184, 0.1);
    color: #64748b;
}

.badge-primary {
    background: rgba(99, 102, 241, 0.15);
    color: #818cf8;
}

/* ---------- Dashboard Cards -------------------------------------------- */

.dashboard-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.dashboard-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
}

.dashboard-card-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
}

.dashboard-card-label {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* ---------- Detail Card ------------------------------------------------ */

.detail-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.detail-card dl {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 0.75rem;
}

.detail-card dt {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.detail-card dd input,
.detail-card dd textarea {
    width: 100%;
    max-width: 400px;
    padding: 0.5rem 0.75rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    font-size: 0.875rem;
    font-family: var(--font-sans);
}

/* ---------- Section Header --------------------------------------------- */

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.section-header h1,
.section-header h2 {
    margin: 0;
}

/* ---------- Action Bar ------------------------------------------------- */

.action-bar {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

.action-bar .selection-count {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-left: auto;
}

/* ---------- Modals ----------------------------------------------------- */

.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    padding: 0;
}

.modal-close:hover {
    color: var(--color-text);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--color-border);
}

.modal-option {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    margin-right: auto;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    cursor: pointer;
}

.modal-option input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

.modal-lg {
    max-width: 720px;
}

.modal-xl {
    max-width: 900px;
}

/* ---------- Tabs ------------------------------------------------------- */

.tab-nav {
    display: flex;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 1rem;
}

.tab-nav button {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 0.625rem 1.25rem;
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    font-family: var(--font-sans);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
}

.tab-nav button:hover {
    color: var(--color-text);
}

.tab-nav button.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* ---------- Pager ------------------------------------------------------ */

.pager {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.pager-info {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.pager-total {
    font-size: 0.8125rem;
    opacity: 0.7;
}

.pager button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ---------- Split Layout ----------------------------------------------- */

.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .split-layout {
        grid-template-columns: 1fr;
    }
}

/* ---------- Nested List ------------------------------------------------ */

.nested-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.nested-parent {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}

.nested-parent-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--color-surface-hover);
    border-bottom: 1px solid var(--color-border);
}

.nested-parent-row input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
    cursor: pointer;
    flex-shrink: 0;
}

.nested-label {
    flex: 1;
    font-size: 0.875rem;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nested-children {
    display: flex;
    flex-direction: column;
}

.nested-child-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem 0.5rem 2.5rem;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.8125rem;
    transition: opacity 0.15s;
}

.nested-child-row:last-child {
    border-bottom: none;
}

.nested-child-name {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nested-child-version {
    color: var(--color-text-muted);
    font-size: 0.75rem;
    flex-shrink: 0;
}

.nested-child-row input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--color-danger);
    cursor: pointer;
    flex-shrink: 0;
}

.nested-deleted {
    opacity: 0.4;
    text-decoration: line-through;
}

/* ---------- Sub-row (expandable table rows) ---------------------------- */

.btn-packages-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 0.25rem 0.625rem;
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-packages-toggle:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(99, 102, 241, 0.06);
}

.btn-packages-toggle.active {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(99, 102, 241, 0.08);
}

.btn-packages-toggle:disabled {
    opacity: 0.3;
    cursor: default;
    pointer-events: none;
}

.btn-packages-toggle .toggle-chevron {
    display: inline-block;
    transition: transform 0.25s ease;
    font-size: 0.5rem;
    line-height: 1;
}

.btn-packages-toggle.active .toggle-chevron {
    transform: rotate(180deg);
}

.sub-row td {
    padding: 0;
    border-bottom: none;
}

.sub-row + tr td,
.sub-row:last-child td {
    border-top: 1px solid var(--color-border);
}

tr:has(+ .sub-row) td {
    border-bottom: none;
    padding-bottom: 0.375rem;
}

.sub-row-wrapper {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.3s ease;
}

.sub-row-wrapper.open {
    grid-template-rows: 1fr;
}

.sub-row-inner {
    overflow: hidden;
}

.sub-row-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    padding: 0.25rem 0 0.625rem;
    opacity: 0;
    transform: translateY(-0.5rem);
    transition: opacity 0.25s ease 0.05s, transform 0.25s ease 0.05s;
}

.sub-row-wrapper.open .sub-row-list {
    opacity: 1;
    transform: translateY(0);
}

.sub-row-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    background: var(--color-surface-hover);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    transition: border-color 0.15s;
    white-space: nowrap;
    flex-shrink: 0;
}

.sub-row-chip:hover {
    border-color: var(--color-primary);
}

.sub-row-chip code {
    color: var(--color-text);
    background: none;
    padding: 0;
    font-size: 0.75rem;
}

.sub-row-chip .sub-row-version {
    color: var(--color-text-muted);
    font-size: 0.6875rem;
    opacity: 0.7;
}

/* ---------- Loading ---------------------------------------------------- */

.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    color: var(--color-text-muted);
    font-style: italic;
    font-size: 0.9375rem;
}

/* ---------- Empty State ------------------------------------------------ */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem 1.5rem;
    text-align: center;
    color: var(--color-text-muted);
}

.empty-state .empty-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    opacity: 0.6;
}

.empty-state p {
    margin: 0 0 0.25rem 0;
    font-size: 0.9375rem;
}

.empty-state .hint {
    font-size: 0.8125rem;
    opacity: 0.7;
}

/* ---------- Confirm Modal ---------------------------------------------- */

.confirm-modal {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    width: 100%;
    max-width: 440px;
    overflow: hidden;
}

.confirm-modal-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.confirm-modal-header .confirm-icon {
    font-size: 1.5rem;
}

.confirm-modal-header h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.confirm-modal-body {
    padding: 1.25rem 1.5rem;
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.confirm-modal-body .item-name {
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 0.5rem 0;
}

.confirm-modal-details {
    margin-top: 0.75rem;
    padding: 0.75rem 1rem;
    background: rgba(239, 68, 68, 0.06);
    border: 1px solid rgba(239, 68, 68, 0.15);
    border-radius: var(--radius);
    font-size: 0.875rem;
}

.delete-impact-list {
    list-style: none;
    padding: 0;
}

.delete-impact-list li {
    padding: 0.25rem 0;
}

.delete-impact-list li::before {
    content: "• ";
    color: var(--color-danger);
}

.confirm-modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--color-border);
}

/* ---------- Error / Success Messages ---------------------------------- */

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
    padding: 1rem;
    border-radius: var(--radius);
    text-align: center;
    font-size: 0.9375rem;
}

.success-message {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #86efac;
    padding: 1rem;
    border-radius: var(--radius);
    text-align: center;
    font-size: 0.9375rem;
}

.warning-text {
    color: var(--color-warning);
    font-size: 0.875rem;
}

/* ---------- Version Tag ------------------------------------------------ */

.version-tag {
    display: inline-block;
    background: var(--color-bg);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    margin-right: 0.25rem;
    margin-bottom: 0.125rem;
}