/* Godswood palette (GBE Frontend Design Guide). The --gw-* tokens are the
   shared family colours, matching Constraint Summary; the shorter names below
   them are what this stylesheet's rules use. Data colours (--green, --cyan,
   --amber, --red and the heat scale in common.js) are separate and do not
   follow the UI accent. */
:root {
    --gw-bg-canvas: #0B1420;
    --gw-bg-surface: #111B26;
    --gw-bg-elevated: #1A2836;
    --gw-bg-hover: #213245;
    --gw-border-subtle: #263544;
    --gw-border-strong: #405264;
    --gw-text-primary: #F2F5F8;
    --gw-text-secondary: #B6C2CF;
    --gw-text-muted: #91A1B3;
    --gw-accent: #E7BF1F;
    --gw-accent-hover: #F3D25A;
    --gw-accent-text: #E7BF1F;
    --gw-on-accent: #0B1420;
    --gw-focus: #E7BF1F;
    --gw-selected: #343424;
    --gw-selected-hover: #3F3D26;
    --gw-selected-border: #776628;
    --gw-danger-fill: #9F2F2A;
    --gw-danger-text: #F08A80;
    --gw-overlay: rgba(11, 20, 32, .55);
    --gw-shadow: rgba(0, 0, 0, .45);
    /* App identity colour: favicon, login mark and login card edge only.
       Each Godswood app has its own (Constraint Summary yellow, Live Power
       orange); interaction accents stay GBE Yellow. Each page sets it from
       its module's 'brand' in modules/pages.py. */
    --app-brand: #6AA84F;
    --font-ui: Manrope, "Segoe UI", sans-serif;
    --font-mono: "DM Mono", Consolas, monospace;

    --bg-app: var(--gw-bg-canvas);
    --ribbon: var(--gw-bg-surface);
    --ribbon-2: var(--gw-bg-elevated);
    --ribbon-border: var(--gw-border-subtle);
    --ribbon-text: var(--gw-text-primary);
    --panel: var(--gw-bg-surface);
    --panel-2: var(--gw-bg-surface);
    --line: var(--gw-border-subtle);
    --line-strong: var(--gw-border-strong);
    --ink: var(--gw-text-primary);
    --muted: var(--gw-text-muted);
    --green: #6aa84f;
    --cyan: #27a8b5;
    --amber: #d8a21b;
    --red: #cc3e35;
    --grid: var(--gw-bg-canvas);
    --grid-2: var(--gw-bg-surface);
    --grid-line: var(--gw-border-subtle);
    --grid-border-soft: var(--gw-bg-elevated);
    --grid-head: var(--gw-bg-elevated);
    --grid-text: var(--gw-text-primary);
    --grid-muted: var(--gw-text-secondary);
    --grid-hover: var(--gw-bg-hover);
    --grid-pin-bg: var(--gw-bg-surface);
    --grid-pin-head-bg: var(--gw-bg-hover);
    --grid-pin-text: var(--gw-text-primary);
    --grid-null: #3A4A5A;
    --focus: var(--gw-focus);
    --surface: var(--gw-bg-surface);
    --surface-2: var(--gw-bg-elevated);
    --surface-border: var(--gw-border-strong);
    --input-bg: var(--gw-bg-elevated);
    --btn-bg: var(--gw-bg-elevated);
    --btn-hover: var(--gw-bg-hover);
    --accent-soft-bg: var(--gw-selected);
    --accent-soft-border: var(--gw-selected-border);
    --accent-soft-text: var(--gw-accent-text);
    --accent-soft-hover: var(--gw-selected-hover);
    --dot-border: var(--gw-border-strong);
    --left-panel: 330px;
    --right-panel: 318px;
    --ribbon-h: 38px;
    color-scheme: dark;
}

/* Light mode: same GBE yellow for fills; darker gold where yellow is text. */
:root[data-theme="light"] {
    --gw-bg-canvas: #F4F6F9;
    --gw-bg-surface: #FFFFFF;
    --gw-bg-elevated: #EDF1F5;
    --gw-bg-hover: #E3E9EF;
    --gw-border-subtle: #DCE3EA;
    --gw-border-strong: #B5C1CD;
    --gw-text-primary: #0B1420;
    --gw-text-secondary: #3B4A5A;
    --gw-text-muted: #5E6E7F;
    --gw-accent: #E7BF1F;
    --gw-accent-hover: #D3AC15;
    --gw-accent-text: #8A6A00;
    --gw-focus: #9C7A00;
    --gw-selected: #FBF0C4;
    --gw-selected-hover: #F7E6A6;
    --gw-selected-border: #D9C36A;
    --gw-danger-fill: #B42318;
    --gw-danger-text: #B42318;
    --gw-overlay: rgba(244, 246, 249, .6);
    --gw-shadow: rgba(11, 20, 32, .14);
    --green: #4f8a3d;
    --cyan: #128a97;
    --amber: #a97a10;
    --red: #b23227;
    --grid-null: #B5C1CD;
    color-scheme: light;
}

* {
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
}

body {
    overflow: hidden;
    background: var(--bg-app);
    color: var(--ink);
    font-family: var(--font-ui);
    letter-spacing: 0;
    transition: background-color .16s ease, color .16s ease;
}

button,
input,
select {
    font: inherit;
}

button {
    cursor: pointer;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

.app-shell {
    height: 100vh;
    display: grid;
    grid-template-rows: var(--ribbon-h) minmax(0, 1fr);
}

/* Shared Godswood top bar: panel toggle, logo (links to the Godswood start
   page), app name, current scope; theme and filter toggles at the right. */
.ribbon {
    position: relative;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
    padding: 0 16px;
    background: var(--ribbon);
    color: var(--ribbon-text);
    border-bottom: 1px solid var(--ribbon-border);
}

.ribbon-button {
    width: 36px;
    height: 36px;
    flex: 0 0 auto;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: var(--gw-text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.ribbon-button:hover {
    background: var(--gw-bg-elevated);
    color: var(--gw-text-primary);
}

.theme-toggle:hover {
    color: var(--gw-accent-text);
}

:root[data-theme="light"] .theme-icon-dark,
:root:not([data-theme="light"]) .theme-icon-light {
    display: none;
}

.brand-link {
    display: inline-flex;
    align-items: center;
    flex: 0 0 auto;
    text-decoration: none;
}

.ribbon-logo {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.brand-divider {
    width: 1px;
    height: 20px;
    flex: 0 0 auto;
    background: var(--gw-border-strong);
}

.app-identity {
    flex: 0 0 auto;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
}

.ribbon-button svg,
.icon-button svg,
.tool-button svg {
    width: 16px;
    height: 16px;
    stroke-width: 2;
}

/* Current scope: node, dates, ISO. */
.module-title {
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font: 12px/1.4 var(--font-mono);
    color: var(--gw-text-secondary);
}

.ribbon-spacer {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: 12px;
}

.workspace {
    min-height: 0;
    display: grid;
    grid-template-columns: var(--left-panel) minmax(0, 1fr) var(--right-panel);
    background: var(--panel);
}

.workspace.no-left-panel {
    grid-template-columns: minmax(0, 1fr) var(--right-panel);
}

.workspace.no-right-panel {
    grid-template-columns: var(--left-panel) minmax(0, 1fr);
}

.workspace.no-left-panel.no-right-panel {
    grid-template-columns: minmax(0, 1fr);
}

.side-panel {
    min-height: 0;
    overflow: auto;
    background: var(--panel);
    border-right: 1px solid var(--line);
}

.side-panel.right {
    border-right: 0;
    border-left: 1px solid var(--line);
    background: var(--panel-2);
}

.field {
    padding: 7px 10px;
    border-bottom: 1px solid var(--line);
}

.field.compact {
    padding-top: 6px;
    padding-bottom: 6px;
}

.field label,
.field-title {
    display: block;
    margin: 0 0 4px;
    color: var(--ink);
    font-size: 11px;
    font-weight: 700;
}

.select,
.input {
    width: 100%;
    height: 26px;
    border: 1px solid var(--gw-border-subtle);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--ink);
    padding: 0 8px;
    outline: none;
    font-size: 12px;
}

.select:focus,
.input:focus {
    border-color: var(--gw-border-strong);
}

.select:focus-visible,
.input:focus-visible {
    outline: 2px solid var(--gw-focus);
    outline-offset: 1px;
}

.input::placeholder {
    color: var(--gw-text-muted);
}

/* Multi-select list (gas hubs): yellow selection, not the browser's blue. */
select[multiple].select option:checked {
    background: var(--gw-selected) linear-gradient(var(--gw-selected), var(--gw-selected));
    color: var(--gw-accent-text);
}

.input-row {
    display: flex;
    gap: 6px;
    align-items: center;
}

.input-row > * {
    min-width: 0;
    flex: 1 1 0;
}

.date-range-control {
    display: grid;
    grid-template-columns: 26px minmax(0, 1fr) 26px;
    gap: 6px;
    align-items: stretch;
}

.date-inputs {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 6px;
    min-width: 0;
}

.date-input-group {
    min-width: 0;
    height: 26px;
    display: flex;
    align-items: center;
    gap: 4px;
    border: 0;
    border-radius: 6px;
    background: var(--input-bg);
    padding-inline: 6px;
}

.date-input-group:focus-within {
    outline: 2px solid var(--gw-focus);
    outline-offset: 1px;
}

.date-input-group svg {
    width: 12px;
    height: 12px;
    flex: 0 0 auto;
    color: var(--muted);
}

.date-input-group .input {
    min-width: 0;
    flex: 1 1 auto;
    height: 100%;
    border: 0;
    background: transparent;
    padding: 0;
    font-size: 11px;
    font-family: var(--font-mono);
}

.date-input-group .input:focus-visible {
    outline: none;
}

/* Secondary buttons: neutral fill, subtle border. */
.step-button,
.inline-button {
    height: 26px;
    flex: 0 0 auto;
    border: 1px solid var(--surface-border);
    border-radius: 6px;
    background: var(--btn-bg);
    color: var(--gw-text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 0 8px;
    font-size: 12px;
    font-weight: 600;
}

.date-range-control .step-button {
    width: 26px;
    height: 26px;
    padding: 0;
}

.date-range-control .step-button svg {
    width: 14px;
    height: 14px;
}

.inline-button:hover,
.step-button:hover {
    background: var(--btn-hover);
    color: var(--gw-text-primary);
}

.radio-row input,
.driver-popup input {
    accent-color: var(--gw-accent);
}

.radio-row {
    display: flex;
    flex-wrap: wrap;
    gap: 7px 10px;
    align-items: center;
}

.radio-row label {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin: 0;
    font-size: 12px;
    font-weight: 600;
    color: var(--ink);
    white-space: nowrap;
}

.check-grid {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 5px;
    user-select: none;
}

.check-grid.hours {
    grid-template-columns: repeat(8, minmax(0, 1fr));
}

.check-grid.months {
    grid-template-columns: repeat(6, minmax(0, 1fr));
}

.check-box {
    justify-content: center;
    align-items: center;
    display: flex;
    border: 1px solid var(--surface-border);
    background: var(--btn-bg);
    color: var(--gw-text-muted);
    height: 26px;
    border-radius: 0;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    -webkit-user-select: none;
    user-select: none;
}

.check-box:hover {
    background: var(--btn-hover);
    color: var(--gw-text-primary);
}

.check-box.selected {
    border-color: var(--accent-soft-border);
    background: var(--accent-soft-bg);
    color: var(--accent-soft-text);
}

.check-box.selected:hover {
    background: var(--accent-soft-hover);
}

.button-stack {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 5px;
    margin-bottom: 7px;
}

.preset-button {
    border-radius: 0;
}

.preset-button:hover {
    border-color: var(--gw-accent);
}

.main-panel {
    min-width: 0;
    min-height: 0;
    display: grid;
    grid-template-rows: auto auto minmax(0, 1fr);
    background: var(--surface);
}

.tabs-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-width: 0;
    padding: 7px 10px 6px;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
}

.tabs {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.tab-button {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    border: 1px solid transparent;
    border-radius: 6px;
    background: transparent;
    color: var(--gw-text-secondary);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 12px;
}

.tab-button:hover {
    background: var(--gw-bg-elevated);
    color: var(--gw-text-primary);
}

.tab-button.active {
    color: var(--gw-text-primary);
}

.tab-button.active::after {
    content: '';
    position: absolute;
    left: 12px;
    right: 12px;
    bottom: -1px;
    height: 2px;
    background: var(--gw-accent);
}

.extras {
    display: flex;
    align-items: center;
    gap: 4px;
}

.tool-button,
.icon-button {
    height: 28px;
    min-width: 30px;
    border: 1px solid var(--surface-border);
    background: var(--btn-bg);
    color: var(--gw-text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 0 8px;
    border-radius: 0;
    font-size: 12px;
    font-weight: 600;
}

.tool-button:hover,
.icon-button:hover {
    background: var(--btn-hover);
    color: var(--gw-text-primary);
}

.grid-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-width: 0;
    padding: 7px 10px;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    gap: 12px;
}

.quick-filter {
    width: min(320px, 46vw);
}

.summary {
    color: var(--gw-text-secondary);
    font: 12px var(--font-mono);
    white-space: nowrap;
}

.tab-view {
    min-height: 0;
    display: none;
}

.tab-view.active {
    display: block;
    height: 100%;
    overflow: hidden;
}

.grid-wrap {
    height: 100%;
    overflow: auto;
    background: var(--grid);
}

table.price-grid {
    width: max-content;
    min-width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    table-layout: fixed;
    color: var(--grid-text);
    font-size: 12px;
    font-variant-numeric: tabular-nums;
}

.price-grid th,
.price-grid td {
    height: 28px;
    min-width: 104px;
    max-width: 148px;
    padding: 0 6px;
    border-right: 1px solid var(--grid-line);
    border-bottom: 1px solid var(--grid-border-soft);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    text-align: center;
}

.price-grid th {
    position: sticky;
    top: 0;
    z-index: 4;
    height: 36px;
    background: var(--grid-head);
    color: var(--grid-text);
    font-weight: 600;
    white-space: normal;
    line-height: 1.1;
}

.price-grid tbody tr:nth-child(even) td {
    background-color: var(--grid-2);
}

.price-grid tbody tr:hover td {
    background-color: var(--grid-hover);
}

.price-grid .pin {
    position: sticky;
    left: 0;
    z-index: 3;
    min-width: 132px;
    max-width: 132px;
    text-align: left;
    background: var(--grid-pin-bg);
}

.price-grid th.pin {
    z-index: 5;
    background: var(--grid-pin-head-bg);
}

.price-grid td.pin {
    color: var(--grid-pin-text);
    font-weight: 600;
}

.num-pos,
.num-neg {
    color: var(--grid-text);
}

.plain-cell {
    color: var(--grid-muted);
}

.driver-popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 60;
    width: 400px;
    max-height: 76vh;
    display: flex;
    flex-direction: column;
    background: var(--gw-bg-surface);
    border: 1px solid var(--gw-border-strong);
    border-radius: 6px;
    box-shadow: 0 12px 40px var(--gw-shadow);
    color: var(--gw-text-primary);
    font-size: 12px;
}

.driver-popup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    background: var(--gw-bg-elevated);
    border-bottom: 1px solid var(--gw-border-subtle);
    border-radius: 6px 6px 0 0;
    flex: 0 0 auto;
}

.driver-popup-header span {
    font-weight: 700;
    font-size: 13px;
}

.driver-popup-body {
    overflow-y: auto;
    padding: 12px 14px;
    flex: 1 1 auto;
}

.driver-popup-section {
    margin-bottom: 14px;
}

.driver-popup-section-title {
    font-size: 11px;
    font-weight: 700;
    color: var(--gw-text-secondary);
    margin-bottom: 7px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--gw-border-subtle);
}

.driver-popup label {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 3px 0;
    cursor: pointer;
    color: var(--gw-text-secondary);
}

.driver-popup label:hover { color: var(--gw-text-primary); }

.driver-popup label.group-label {
    color: var(--gw-text-secondary);
    font-weight: 600;
    margin-top: 4px;
}

.driver-popup label.sub-label {
    padding-left: 18px;
    font-size: 11px;
    color: var(--gw-text-muted);
}

.driver-backdrop {
    position: fixed;
    inset: 0;
    z-index: 59;
    background: var(--gw-overlay);
}

.driver-popup .close-btn {
    background: none;
    border: none;
    color: var(--gw-text-muted);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    padding: 0 2px;
}

.driver-popup .close-btn:hover { color: var(--gw-text-primary); }

.price-grid th.sortable {
    cursor: pointer;
    user-select: none;
}

.price-grid th.sortable:hover {
    background: var(--grid-pin-head-bg);
}

.sort-arrow {
    display: inline-block;
    margin-left: 4px;
    opacity: 0.7;
    font-size: 10px;
}

.empty-state,
.chart-empty {
    height: 100%;
    display: grid;
    place-items: center;
    color: var(--grid-text);
    background: var(--grid);
    font-weight: 700;
}

.chart-stage {
    height: 100%;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    background: var(--gw-bg-canvas);
    color: var(--gw-text-primary);
    padding: 10px;
    gap: 10px;
}

.chart-controls {
    display: flex;
    gap: 8px;
    align-items: center;
}

.chart-controls .select {
    width: 220px;
    height: 30px;
}

.chart-canvas {
    min-height: 0;
    background: var(--gw-bg-surface);
    border: 1px solid var(--gw-border-subtle);
    border-radius: 6px;
    padding: 10px;
}

.chart-canvas canvas {
    width: 100% !important;
    height: 100% !important;
}

.status-line {
    color: var(--gw-text-secondary);
    font: 12px var(--font-mono);
}

.loading {
    position: fixed;
    inset: var(--ribbon-h) 0 0;
    display: none;
    place-items: center;
    z-index: 20;
    background: var(--gw-overlay);
}

.loading.active {
    display: grid;
}

.loading-box {
    width: 210px;
    height: 78px;
    display: grid;
    place-items: center;
    background: var(--gw-bg-surface);
    color: var(--gw-text-primary);
    border: 1px solid var(--gw-border-strong);
    border-radius: 6px;
    font-weight: 600;
}

.message {
    position: fixed;
    right: 14px;
    bottom: 14px;
    max-width: min(520px, calc(100vw - 28px));
    padding: 10px 12px;
    display: none;
    color: #fff;
    background: var(--gw-danger-fill);
    border-radius: 6px;
    z-index: 30;
    font-size: 13px;
    font-weight: 700;
}

.message.active {
    display: block;
}

/* ── Spread Analysis tab ────────────────────────────── */
.sa-wrap {
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: var(--gw-bg-canvas);
}

.sa-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 8px;
    background: var(--gw-bg-surface);
    border: 1px solid var(--gw-border-subtle);
    border-radius: 6px;
    flex: 0 0 auto;
}

.sa-toolbar label {
    font-size: 11px;
    color: var(--grid-muted);
    white-space: nowrap;
}

.sa-toolbar .select { max-width: 200px; }

.sa-card {
    background: var(--grid-2);
    border: 1px solid var(--grid-line);
    border-radius: 6px;
    padding: 10px 12px;
}

.sa-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.sa-card-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--grid-muted);
}

.sa-two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

/* heatmap */
.sa-heatmap-scroll { overflow-x: auto; }

.sa-heatmap {
    border-collapse: collapse;
    font-size: 10px;
    color: var(--grid-text);
    width: 100%;
}

.sa-heatmap th {
    background: var(--grid-head);
    color: var(--grid-muted);
    font-weight: 500;
    padding: 3px 5px;
    text-align: center;
    white-space: nowrap;
    border: 1px solid var(--grid-line);
}

.sa-heatmap td {
    padding: 2px 3px;
    text-align: center;
    border: 1px solid var(--grid-border-soft);
    min-width: 44px;
    font-variant-numeric: tabular-nums;
}

.sa-heatmap td.row-label {
    background: var(--grid-head);
    color: var(--grid-muted);
    font-weight: 500;
    text-align: right;
    padding-right: 8px;
    min-width: 36px;
}

/* TB toggle buttons */
.sa-btn-group { display: flex; gap: 3px; }

.sa-toggle {
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 600;
    border: 1px solid var(--surface-border);
    background: transparent;
    color: var(--grid-muted);
    border-radius: 0;
    cursor: pointer;
}

.sa-toggle.active {
    background: var(--gw-selected);
    border-color: var(--gw-selected-border);
    color: var(--gw-accent-text);
}

/* TB stats bar */
.tb-stat-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 10px;
}

.tb-stat {
    background: var(--grid);
    border: 1px solid var(--grid-line);
    border-radius: 6px;
    padding: 7px 10px;
}

.tb-stat-val {
    font: 500 18px var(--font-mono);
    font-weight: 700;
    color: var(--grid-text);
}

.tb-stat-lbl {
    font-size: 10px;
    color: var(--grid-muted);
    margin-top: 1px;
}

/* Top/Bottom 100 tables */
.sa-rank-table {
    border-collapse: collapse;
    font-size: 11px;
    font-variant-numeric: tabular-nums;
    width: 100%;
    color: var(--grid-text);
}

.sa-rank-table th {
    background: var(--grid-head);
    color: var(--grid-muted);
    font-weight: 500;
    padding: 4px 8px;
    text-align: left;
    border-bottom: 1px solid var(--grid-line);
    position: sticky;
    top: 0;
}

.sa-rank-table td {
    padding: 3px 8px;
    border-bottom: 1px solid var(--grid-border-soft);
}

.sa-rank-table tr:hover td { background: var(--grid-hover); }

.sa-table-scroll { max-height: 260px; overflow-y: auto; }

@media (max-width: 1100px) {
    .workspace {
        grid-template-columns: minmax(240px, 34vw) minmax(0, 1fr);
    }

    .side-panel.right {
        display: none;
    }
}

@media (max-width: 760px) {
    body {
        overflow: auto;
    }

    .app-shell {
        min-height: 100vh;
        height: auto;
    }

    .ribbon {
        position: sticky;
        top: 0;
        z-index: 10;
    }

    .workspace {
        display: block;
    }

    .side-panel,
    .main-panel {
        min-height: auto;
    }

    .side-panel {
        max-height: none;
    }

    .main-panel {
        height: 72vh;
    }

    .module-title {
        font-size: 11px;
    }
}

/* Phones: taller bar and 44px touch targets. */
@media (max-width: 599px) {
    :root {
        --ribbon-h: 56px;
    }

    .ribbon {
        gap: 6px;
        padding: 0 8px;
    }

    .ribbon-spacer {
        gap: 6px;
    }

    .ribbon-button {
        width: 44px;
        height: 44px;
    }

    .brand-divider {
        display: none;
    }

    .app-identity {
        font-size: 12px;
        white-space: normal;
        line-height: 1.2;
    }
}

/* ── Custom dropdowns (static/js/picker.js) ─────────────────────────────
   The native <select> stays in the page, hidden, and keeps its value and
   change events; the trigger below shows and sets it. */
.select-native {
    display: none !important;
}

.picker-button {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    text-align: left;
    cursor: pointer;
}

.picker-button > .picker-label {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.picker-button:hover,
.picker-button[aria-expanded="true"] {
    border-color: var(--gw-accent);
}

.picker-button:disabled {
    cursor: not-allowed;
    opacity: .55;
}

.control-chevron {
    width: 14px;
    height: 14px;
    flex: 0 0 auto;
    color: var(--gw-accent-text);
    transition: transform 180ms ease;
}

.picker-button[aria-expanded="true"] .control-chevron {
    transform: rotate(180deg);
}

.picker-menu {
    position: fixed;
    z-index: 1000;
    padding: 4px;
    overflow-y: auto;
    background: var(--gw-bg-surface);
    border: 1px solid color-mix(in srgb, var(--gw-accent) 24%, transparent);
    border-radius: 8px;
    box-shadow: 0 16px 40px var(--gw-shadow);
    animation: picker-enter 160ms ease-out;
}

.picker-option {
    padding: 6px 8px;
    border-radius: 6px;
    color: var(--gw-text-primary);
    cursor: pointer;
    font: 500 12px/18px var(--font-ui);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.picker-option.active {
    background: color-mix(in srgb, var(--gw-accent) 10%, transparent);
}

.picker-option.selected {
    background: color-mix(in srgb, var(--gw-accent) 28%, transparent);
    color: var(--picker-selected-text);
}

.picker-option.selected.active {
    background: color-mix(in srgb, var(--gw-accent) 34%, transparent);
}

:root {
    --picker-selected-text: color-mix(in srgb, var(--gw-accent) 72%, white);
}

:root[data-theme="light"] {
    --picker-selected-text: var(--gw-accent-text);
}

@keyframes picker-enter {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 599px) {
    .picker-option {
        min-height: 44px;
        display: flex;
        align-items: center;
    }
}

/* ── Shared interaction rules ──────────────────────────────────────────── */
button,
a,
input,
select,
.check-box {
    transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

:is(button, a, input, select, [tabindex]):focus-visible {
    outline: 2px solid var(--gw-focus);
    outline-offset: 2px;
}

/* Yellow thumbs on navy tracks, everywhere that scrolls. */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--gw-accent) var(--gw-bg-surface);
}

*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-track { background: var(--gw-bg-surface); }
*::-webkit-scrollbar-thumb { background: var(--gw-accent); border: 2px solid var(--gw-bg-surface); border-radius: 6px; }
*::-webkit-scrollbar-thumb:hover { background: var(--gw-accent-hover); }
*::-webkit-scrollbar-corner { background: var(--gw-bg-surface); }
*::-webkit-scrollbar-button { display: none; width: 0; height: 0; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation: none !important;
        transition: none !important;
    }
}

/* ── Signed-in user (top bar) ──────────────────────────────────────────── */
.ribbon-user {
    display: flex;
    align-items: center;
    gap: 8px;
    font: 12px var(--font-mono);
    color: var(--gw-text-secondary);
    white-space: nowrap;
}

.ribbon-signout {
    font: 600 12px var(--font-ui);
    color: var(--gw-text-secondary);
    background: transparent;
    padding: 3px 8px;
    border: 1px solid var(--gw-border-strong);
    border-radius: 6px;
}

.ribbon-signout:hover {
    color: var(--gw-accent-text);
    border-color: var(--gw-accent);
}

@media (max-width: 899px) {
    .ribbon-user > span {
        display: none;
    }
}

/* ── Login card ────────────────────────────────────────────────────────── */
body.login {
    height: 100%;
    display: grid;
    place-items: center;
    padding: 24px;
    background: var(--gw-bg-canvas);
}

.login-theme {
    position: fixed;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    border: 1px solid var(--gw-border-strong);
    background: var(--gw-bg-surface);
}

.login-card {
    width: min(400px, 100%);
    padding: 32px 28px 28px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background: var(--gw-bg-surface);
    border: 1px solid var(--gw-border-subtle);
    border-top: 2px solid var(--app-brand);
    border-radius: 8px;
    box-shadow: 0 8px 24px var(--gw-shadow);
    animation: login-enter 180ms ease-out;
}

@keyframes login-enter {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: none; }
}

.login-mark {
    width: 64px;
    height: 64px;
    display: grid;
    place-items: center;
    margin-bottom: 16px;
    border-radius: 12px;
    background: var(--app-brand);
    color: var(--gw-on-accent);
    font: 700 26px/1 var(--font-ui);
    letter-spacing: -0.5px;
}

.login-title {
    margin: 0;
    font: 600 20px/1.3 var(--font-ui);
    color: var(--gw-text-primary);
}

.login-sub {
    margin: 6px 0 0;
    font: 12px/1.5 var(--font-mono);
    color: var(--gw-text-secondary);
}

.login-button {
    margin-top: 24px;
    min-height: 44px;
    display: grid;
    place-items: center;
}

/* Google's button is an iframe; a dark color-scheme makes the browser paint an opaque white backdrop behind it. */
.login-button > div {
    color-scheme: normal;
}

.login-busy {
    font-size: 13px;
    color: var(--gw-text-secondary);
}

.login-error {
    margin-top: 12px;
    font-size: 13px;
    color: var(--gw-danger-text);
}

.login-error:empty {
    display: none;
}