.settings-shell {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    overflow: hidden;
    padding: 0 20px 16px;
}

.settings-tabs-bar {
    padding: 0;
    background: transparent;
    backdrop-filter: none;
}

.settings-mobile-back {
    display: none;
}

.settings-tabs {
    display: flex;
    flex-wrap: nowrap;
    gap: 10px;
    overflow-x: auto;
    padding: 8px 0 12px;
    scrollbar-width: none;
}

.settings-tabs::-webkit-scrollbar {
    display: none;
}

.settings-tab {
    flex: 0 0 auto;
    white-space: nowrap;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    border-radius: 999px;
    padding: 9px 16px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}

.settings-tab:hover,
.settings-tab.active {
    color: var(--text-primary);
    border-color: rgba(232, 93, 111, 0.4);
    background: rgba(232, 93, 111, 0.12);
}

.settings-scroll {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 18px;
    padding: 4px 2px 18px;
}

.settings-panel {
    display: none;
    flex-direction: column;
    gap: 18px;
}

.settings-panel.active {
    display: flex;
}

.settings-section-copy {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.6;
    max-width: 900px;
}

.settings-shell .form-section {
    margin-bottom: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 18px;
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.03);
}

.settings-shell .form-section.compact {
    margin-top: 0;
}

.settings-shell .form-section.danger {
    border-color: rgba(220, 38, 38, 0.18);
    background: rgba(239, 68, 68, 0.05);
}

.settings-shell .form-section h3 {
    margin-bottom: 0;
}

.settings-provider-card {
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.03);
    overflow: hidden;
}

.settings-provider-card summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 18px;
}

.settings-provider-card summary::-webkit-details-marker {
    display: none;
}

.settings-provider-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    color: var(--text-primary);
}

.settings-provider-icon {
    width: 22px;
    height: 22px;
    object-fit: contain;
}

.settings-provider-hint {
    color: var(--text-muted);
    font-size: 12px;
    text-align: right;
}

.settings-provider-body {
    padding: 0 18px 18px;
}

.settings-extension-sections {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.settings-extension-section {
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.03);
    border-radius: 14px;
    padding: 12px 14px;
}

.settings-extension-section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 6px;
}

.settings-extension-components,
.settings-extension-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.settings-extension-checkbox {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 13px;
}

.settings-shell .form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 14px;
    margin-bottom: 0;
}

.settings-shell .form-grid {
    display: grid;
    gap: 14px;
}

.settings-shell .form-grid.two {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.settings-shell .form-grid.four {
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}

.settings-shell .form-field {
    min-width: 0;
    gap: 8px;
}

.settings-shell .form-field label {
    font-size: 12px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.68);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.settings-shell .form-field input,
.settings-shell .form-field select {
    width: 100%;
    min-width: 0;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(26, 21, 32, 0.88);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.settings-shell .form-field input::placeholder,
.secret-input::placeholder {
    color: rgba(255, 255, 255, 0.24);
}

.settings-shell .form-field input:focus,
.settings-shell .form-field select:focus {
    border-color: rgba(232, 93, 111, 0.4);
    box-shadow: 0 0 0 3px rgba(232, 93, 111, 0.10);
}

.settings-shell .form-field select {
    appearance: none;
    padding-right: 36px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 14 14'%3E%3Cpath d='M3 5l4 4 4-4' fill='none' stroke='%23e2e8f0' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
}

.settings-inline-note {
    margin-top: 2px;
    color: var(--text-muted);
    font-size: 12px;
    line-height: 1.55;
}

.settings-inline-status {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.45;
}

/* Utility: hide elements that start as hidden and are revealed via JS */
.local-model-hidden {
    display: none !important;
}

/* Local model download progress bar */
.local-model-progress-wrap {
    margin-top: 8px;
    height: 6px;
    border-radius: var(--radius-xs);
    background: rgba(255, 255, 255, 0.08);
    overflow: hidden;
}

.local-model-progress-bar {
    height: 100%;
    border-radius: var(--radius-xs);
    background: var(--accent);
    width: 0%;
    transition: width 0.4s ease;
}

/* Install Local Runtime button */
.local-model-install-btn {
    margin-top: 10px;
}

.settings-inline-status[data-tone="ok"],
.settings-test-result[data-tone="ok"] {
    color: var(--green);
}

.settings-inline-status[data-tone="warn"],
.settings-test-result[data-tone="warn"] {
    color: var(--amber);
}

.settings-inline-status[data-tone="error"],
.settings-test-result[data-tone="error"] {
    color: var(--red);
}

.settings-unsaved-indicator {
    color: var(--amber);
    font-weight: 600;
    min-width: 126px;
    opacity: 0;
    visibility: hidden;
    text-align: right;
}

.settings-unsaved-indicator.is-visible {
    opacity: 1;
    visibility: visible;
}

.settings-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.settings-footer {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 14px 2px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    background: linear-gradient(180deg, rgba(13, 11, 15, 0), rgba(13, 11, 15, 0.92) 55%);
}

.settings-footer-actions,
.settings-footer-status {
    display: flex;
    align-items: center;
    gap: 10px;
}

.settings-footer-actions {
    flex: 0 0 auto;
}

.settings-footer-status {
    flex: 1 1 auto;
    justify-content: flex-end;
    min-width: 0;
}

.settings-footer-status #settings-status {
    min-width: 220px;
    max-width: 52ch;
    text-align: right;
}

.secret-input-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 10px;
    align-items: stretch;
}

.secret-input-row input {
    min-width: 0;
}

.settings-ghost-btn {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    border-radius: 12px;
    padding: 0 14px;
    min-height: 42px;
    cursor: pointer;
    font-size: 13px;
}

.settings-ghost-btn:hover {
    color: var(--text-primary);
    border-color: rgba(232, 93, 111, 0.35);
}

.settings-model-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.settings-model-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.025);
    min-width: 0;
}

.settings-model-header {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: flex-start;
}

.settings-model-header h4 {
    font-size: 15px;
    margin: 0 0 4px;
}

.settings-model-header p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 12px;
    line-height: 1.45;
}

.model-picker {
    position: relative;
}

.model-picker input {
    width: 100%;
    min-width: 0;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(26, 21, 32, 0.88);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.model-picker input:focus {
    border-color: rgba(232, 93, 111, 0.4);
    box-shadow: 0 0 0 3px rgba(232, 93, 111, 0.10);
}

.model-picker input::placeholder {
    color: rgba(255, 255, 255, 0.24);
}

.model-picker-results {
    position: absolute;
    z-index: 5;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    max-height: 260px;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 8px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(18, 20, 26, 0.98);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.32);
}

.model-picker-item {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 2px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    text-align: left;
    padding: 10px 12px;
    border-radius: 12px;
    cursor: pointer;
}

.model-picker-item:hover {
    background: rgba(255, 255, 255, 0.06);
}

.model-picker-item-value {
    font-size: 13px;
    font-weight: 600;
}

.model-picker-item-label {
    color: var(--text-secondary);
    font-size: 11px;
}

.settings-effort-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.settings-effort-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 16px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.025);
}

.settings-effort-card label {
    font-size: 12px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.68);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.settings-effort-group {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
}

.settings-effort-btn {
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    border-radius: 12px;
    padding: 10px 12px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
}

.settings-effort-btn.active,
.settings-effort-btn:hover {
    color: var(--text-primary);
    border-color: rgba(232, 93, 111, 0.35);
    background: rgba(232, 93, 111, 0.12);
}

/* Review enforcement toggle: 2 columns, advisory = amber, blocking = crimson */
[data-enforcement-group].settings-effort-group {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

/* Phase 2 runtime-mode toggle (Light/Advanced/Pro): 3 columns. Without
   this override the 3 buttons would fall through to the default 4-column
   layout of .settings-effort-group and leave an empty fourth column. */
[data-runtime-mode-group].settings-effort-group {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

/* Generic disabled segmented-button style. Runtime mode is interactive in
   desktop builds, but other segmented controls may still disable buttons. */
.settings-effort-btn:disabled {
    cursor: not-allowed;
    opacity: 0.55;
}
.settings-effort-btn:disabled:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
    transform: none;
}


[data-enforcement-group] .settings-effort-btn[data-effort-value="advisory"].active,
[data-enforcement-group] .settings-effort-btn[data-effort-value="advisory"]:hover {
    color: var(--amber);
    border-color: rgba(245, 158, 11, 0.4);
    background: rgba(245, 158, 11, 0.12);
}

[data-enforcement-group] .settings-effort-btn[data-effort-value="blocking"].active,
[data-enforcement-group] .settings-effort-btn[data-effort-value="blocking"]:hover {
    color: var(--text-primary);
    border-color: rgba(232, 93, 111, 0.5);
    background: rgba(201, 53, 69, 0.18);
}

.local-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
}

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

.local-toggle[data-warning="1"] {
    color: var(--amber);
}

.settings-test-result {
    display: none;
    margin-top: 4px;
    color: var(--text-muted);
    font-size: 12px;
}

@media (max-width: 980px) {
    .settings-shell {
        padding: 0 14px 14px;
    }

    .settings-model-grid,
    .settings-effort-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 760px) {
    .settings-provider-card summary,
    .settings-footer {
        align-items: stretch;
        flex-direction: column;
    }

    .settings-footer-actions,
    .settings-footer-status {
        justify-content: flex-start;
        align-items: stretch;
    }

    .settings-footer-status #settings-status,
    .settings-unsaved-indicator {
        text-align: left;
    }

    .settings-provider-hint {
        text-align: left;
    }

    .secret-input-row {
        grid-template-columns: 1fr;
    }

    .settings-effort-group {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    /* v5.7.0: revert the v5.6.0 drill-down/back-button accordion. On
       phones the tab strip stays horizontal-scroll pills (the pre-rc.8
       shape) so all sub-tabs are reachable in one tap, no back-out
       round-trip. The .settings-mobile-back element stays in the DOM
       hidden so the JS in bindSettingsTabs (still present for back-
       compat) does not error if it queries it. */
    .settings-shell {
        padding: 0 10px 10px;
    }

    .settings-tabs-bar {
        padding: 0;
    }

    .settings-tabs {
        flex-wrap: nowrap;
        gap: 8px;
        padding: 8px 2px 10px;
        overflow-x: auto;
    }

    .settings-tab {
        flex: 0 0 auto;
        min-height: 38px;
        padding: 8px 14px;
        font-size: 13px;
        white-space: nowrap;
        border-radius: 999px;
    }

    .settings-mobile-back {
        display: none !important;
    }

    .settings-shell .form-section {
        padding: 14px;
    }

    .settings-provider-card summary {
        padding: 14px 14px;
    }

    .settings-provider-body {
        padding: 0 14px 14px;
    }
}