/* ElevenX design foundation 1.2. Source: elevenx-app-platform/packages/product-shell.
   Generated consumer copies must be updated with sync:design, not edited locally.
   CSS only: this stylesheet never selects or persists an appearance preference. */
:root {
  color-scheme: dark;
  --elevenx-canvas: #101012;
  --elevenx-surface: #1c1c1e;
  --elevenx-surface-raised: #2c2c2e;
  --elevenx-surface-soft: #161618;
  --elevenx-foreground: #f5f5f7;
  --elevenx-muted: #aeaeb3;
  --elevenx-faint: #939399;
  --elevenx-fill: rgba(120, 120, 128, 0.2);
  --elevenx-fill-strong: rgba(120, 120, 128, 0.32);
  --elevenx-segment-thumb: #636366;
  --elevenx-select-chevron: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23aeaeb3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  --elevenx-primary: #64adff;
  --elevenx-primary-hover: #8ac1ff;
  --elevenx-on-primary: #061b33;
  --elevenx-control: #161618;
  --elevenx-border: #74747a;
  --elevenx-border-soft: #343436;
  --elevenx-focus: #64adff;
  --elevenx-success: #63d883;
  --elevenx-success-soft: #63d88318;
  --elevenx-warning: #ffd36a;
  --elevenx-warning-soft: #ffd36a18;
  --elevenx-danger: #ff8a80;
  --elevenx-danger-soft: #ff8a8018;
  --elevenx-data-1: #9ba9b9;
  --elevenx-data-2: #a8c8b3;
  --elevenx-data-3: #c9b7c5;
  --elevenx-data-4: #b9c5dc;
  --elevenx-data-5: #d5d8df;
  --elevenx-chrome-bg: #101012;
  --elevenx-chrome-overlay: rgba(28, 28, 30, 0.78);
  --elevenx-chrome-surface: #1c1c1e;
  --elevenx-chrome-surface-raised: #2c2c2e;
  --elevenx-chrome-text: #f5f5f7;
  --elevenx-chrome-muted: #b0b0b5;
  --elevenx-chrome-faint: #a1a1a8;
  --elevenx-chrome-primary: #64adff;
  --elevenx-chrome-border: #74747a;
  --elevenx-chrome-border-soft: #343436;
  --elevenx-chrome-danger: #ff8a80;
  --elevenx-chrome-hairline: rgba(255, 255, 255, 0.08);
  --elevenx-chrome-fill: rgba(255, 255, 255, 0.06);
  --elevenx-chrome-scheme: dark;
  --elevenx-canvas-glow: transparent;
  --elevenx-action: #0071e3;
  --elevenx-action-hover: #0064ca;
  --elevenx-on-action: #ffffff;
  --elevenx-selection: rgba(10, 132, 255, 0.16);
  --elevenx-glass: rgba(44, 44, 46, 0.78);
  --elevenx-glass-edge: rgba(255, 255, 255, 0.16);
  --elevenx-glass-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.07);
  --elevenx-font: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Segoe UI", "Noto Sans JP", Meiryo, sans-serif;
  --elevenx-font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --elevenx-font-caption: 0.75rem;
  --elevenx-font-label: 0.8125rem;
  --elevenx-font-body: 0.9375rem;
  --elevenx-font-heading: 1.125rem;
  --elevenx-font-title: 2rem;
  --elevenx-font-large-title: 2rem;
  --elevenx-font-title-1: 1.625rem;
  --elevenx-font-title-2: 1.375rem;
  --elevenx-font-title-3: 1.125rem;
  --elevenx-font-headline: 0.9375rem;
  --elevenx-font-callout: 0.875rem;
  --elevenx-font-subheadline: 0.8125rem;
  --elevenx-font-footnote: 0.75rem;
  --elevenx-weight-regular: 400;
  --elevenx-weight-medium: 500;
  --elevenx-weight-semibold: 600;
  --elevenx-leading-body: 1.6;
  --elevenx-leading-label: 1.4;
  --elevenx-leading-heading: 1.25;
  --elevenx-icon-stroke: 1.75;
  --elevenx-icon-small: 16px;
  --elevenx-icon-medium: 20px;
  --elevenx-icon-large: 24px;
  --elevenx-space-1: 4px;
  --elevenx-space-2: 8px;
  --elevenx-space-3: 12px;
  --elevenx-space-4: 16px;
  --elevenx-space-5: 20px;
  --elevenx-space-6: 24px;
  --elevenx-space-8: 32px;
  --elevenx-space-12: 48px;
  --elevenx-radius-sm: 8px;
  --elevenx-radius-control: 12px;
  --elevenx-radius-pill: 999px;
  --elevenx-radius: 20px;
  --elevenx-radius-lg: 28px;
  --elevenx-control-height: 40px;
  --elevenx-control-height-touch: 44px;
  --elevenx-shadow: 0 16px 48px rgba(0, 0, 0, 0.24);
  --elevenx-shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.12);
  --elevenx-duration: 160ms;
  --elevenx-ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* Existing adaptive consumers retain their saved appearance. Dark-only products
   do not install the theme runtime just to use this foundation. */
:root[data-theme="light"] {
  color-scheme: light;
  --elevenx-canvas: #f5f5f7;
  --elevenx-surface: #ffffff;
  --elevenx-surface-raised: #e9e9ed;
  --elevenx-surface-soft: #f0f0f3;
  --elevenx-foreground: #1d1d1f;
  --elevenx-muted: #56565b;
  --elevenx-faint: #68686d;
  --elevenx-fill: rgba(120, 120, 128, 0.12);
  --elevenx-fill-strong: rgba(120, 120, 128, 0.2);
  --elevenx-segment-thumb: #ffffff;
  --elevenx-select-chevron: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2356565b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  --elevenx-primary: #0062c4;
  --elevenx-primary-hover: #004f9e;
  --elevenx-on-primary: #ffffff;
  --elevenx-control: #ffffff;
  --elevenx-action: #0071e3;
  --elevenx-action-hover: #0064ca;
  --elevenx-on-action: #ffffff;
  --elevenx-selection: rgba(0, 113, 227, 0.09);
  --elevenx-glass: rgba(245, 245, 247, 0.82);
  --elevenx-glass-edge: rgba(0, 0, 0, 0.1);
  --elevenx-glass-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.8);
  --elevenx-border: #808086;
  --elevenx-border-soft: #d9d9de;
  --elevenx-focus: #0062c4;
  --elevenx-success: #286c4a;
  --elevenx-success-soft: #286c4a12;
  --elevenx-warning: #805a20;
  --elevenx-warning-soft: #805a2012;
  --elevenx-danger: #a63f35;
  --elevenx-danger-soft: #a63f3512;
  --elevenx-data-1: #52677f;
  --elevenx-data-2: #39705a;
  --elevenx-data-3: #775e72;
  --elevenx-data-4: #586b8a;
  --elevenx-data-5: #4f5b68;
  --elevenx-chrome-bg: #f5f5f7;
  --elevenx-chrome-overlay: rgba(245, 245, 247, 0.82);
  --elevenx-chrome-surface: #ffffff;
  --elevenx-chrome-surface-raised: #e9e9ed;
  --elevenx-chrome-text: #1d1d1f;
  --elevenx-chrome-muted: #56565b;
  --elevenx-chrome-faint: #68686d;
  --elevenx-chrome-primary: #0062c4;
  --elevenx-chrome-border: #808086;
  --elevenx-chrome-border-soft: #d9d9de;
  --elevenx-chrome-danger: #a63f35;
  --elevenx-chrome-hairline: rgba(0, 0, 0, 0.1);
  --elevenx-chrome-fill: rgba(0, 0, 0, 0.05);
  --elevenx-chrome-scheme: light;
  --elevenx-shadow: 0 16px 48px rgba(25, 35, 48, 0.1);
  --elevenx-shadow-soft: 0 2px 8px rgba(25, 35, 48, 0.06);
}

/* Opt-in primitives for new products; no global button/table/canvas reset. */
.elevenx-page { background: var(--elevenx-canvas); color: var(--elevenx-foreground); font: var(--elevenx-font-body)/1.6 var(--elevenx-font); }
.elevenx-surface { background: var(--elevenx-surface); border: 1px solid transparent; border-radius: var(--elevenx-radius); }
.elevenx-title { margin: 0; font-size: var(--elevenx-font-title); line-height: var(--elevenx-leading-heading); font-weight: var(--elevenx-weight-semibold); letter-spacing: -0.025em; }
.elevenx-button, .elevenx-field {
  box-sizing: border-box;
  min-height: var(--elevenx-control-height);
  border: 1px solid var(--elevenx-border);
  border-radius: var(--elevenx-radius-control);
  padding: 8px 14px;
  background: var(--elevenx-control);
  color: var(--elevenx-foreground);
  font: 500 var(--elevenx-font-label)/1.4 var(--elevenx-font);
}
.elevenx-button { border-color: transparent; border-radius: var(--elevenx-radius-pill); padding-inline: 20px; background: var(--elevenx-surface-raised); display: inline-flex; align-items: center; justify-content: center; gap: 8px; text-decoration: none; cursor: pointer; transition: background var(--elevenx-duration) var(--elevenx-ease), opacity var(--elevenx-duration) var(--elevenx-ease), transform var(--elevenx-duration) var(--elevenx-ease); }
.elevenx-button:hover:not(:disabled) { background: color-mix(in srgb, var(--elevenx-surface-raised) 86%, var(--elevenx-foreground)); }
.elevenx-button:active:not(:disabled) { transform: scale(0.97); opacity: 0.82; }
.elevenx-button-primary { background: var(--elevenx-action); color: var(--elevenx-on-action); border-color: transparent; font-weight: var(--elevenx-weight-semibold); }
.elevenx-button-primary:hover:not(:disabled) { background: var(--elevenx-action-hover); }
.elevenx-button:disabled { opacity: 0.5; cursor: not-allowed; }
.elevenx-field::placeholder { color: var(--elevenx-faint); }
.elevenx-button:focus-visible, .elevenx-field:focus-visible { outline: 2px solid var(--elevenx-focus); outline-offset: 3px; }

/* UI symbols share an optical grid; product logos and data SVGs opt out. */
.elevenx-icon {
  display: inline-block;
  flex: none;
  width: var(--elevenx-icon-medium);
  height: var(--elevenx-icon-medium);
  vertical-align: middle;
  fill: none;
  stroke: currentColor;
  stroke-width: var(--elevenx-icon-stroke);
  stroke-linecap: round;
  stroke-linejoin: round;
}
.elevenx-icon-small { width: var(--elevenx-icon-small); height: var(--elevenx-icon-small); }
.elevenx-icon-large { width: var(--elevenx-icon-large); height: var(--elevenx-icon-large); }
.elevenx-page, .elevenx-product-header, .elevenx-auth-screen { font-optical-sizing: auto; }
.elevenx-field { font-size: var(--elevenx-font-body); font-weight: var(--elevenx-weight-regular); }
.elevenx-auth-card h1 { font-weight: var(--elevenx-weight-semibold); }
.elevenx-auth-card .elevenx-auth-eyebrow { font-weight: var(--elevenx-weight-medium); letter-spacing: normal; text-transform: none; }

/* Navigation floats above content; grouped content stays opaque. */
.elevenx-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 6px; border: 1px solid var(--elevenx-glass-edge); border-radius: var(--elevenx-radius-pill); background: var(--elevenx-surface-raised); box-shadow: var(--elevenx-glass-highlight), var(--elevenx-shadow-soft); }
@supports (backdrop-filter: blur(24px)) { .elevenx-toolbar { background: var(--elevenx-glass); backdrop-filter: blur(24px) saturate(160%); } }
.elevenx-toolbar .elevenx-button { background: transparent; }
.elevenx-toolbar .elevenx-button[aria-pressed="true"] { background: color-mix(in srgb, var(--elevenx-foreground) 12%, transparent); }
.elevenx-group { overflow: hidden; background: var(--elevenx-surface); border-radius: var(--elevenx-radius); }
.elevenx-group-row { display: flex; align-items: center; gap: 16px; min-height: 64px; padding: 16px 20px; }
.elevenx-group-row + .elevenx-group-row { border-top: 1px solid var(--elevenx-border-soft); }
.elevenx-group-row > :first-child { flex: 1; min-width: 0; }
@media (prefers-reduced-transparency: reduce), (prefers-contrast: more) { .elevenx-toolbar { background: var(--elevenx-surface-raised); backdrop-filter: none; } }

/* Foundation 1.2: type ramp. Existing --elevenx-font-* aliases keep their values. */
.elevenx-text-large-title { font-size: var(--elevenx-font-large-title); font-weight: 600; line-height: 1.2; letter-spacing: -0.022em; }
.elevenx-text-title-1 { font-size: var(--elevenx-font-title-1); font-weight: 600; line-height: 1.25; letter-spacing: -0.02em; }
.elevenx-text-title-2 { font-size: var(--elevenx-font-title-2); font-weight: 600; line-height: 1.27; letter-spacing: -0.016em; }
.elevenx-text-title-3 { font-size: var(--elevenx-font-title-3); font-weight: 600; line-height: 1.33; }
.elevenx-text-headline { font-size: var(--elevenx-font-headline); font-weight: 600; line-height: 1.47; }
.elevenx-text-body { font-size: var(--elevenx-font-body); font-weight: 400; line-height: 1.6; }
.elevenx-text-callout { font-size: var(--elevenx-font-callout); font-weight: 400; line-height: 1.5; }
.elevenx-text-subheadline { font-size: var(--elevenx-font-subheadline); font-weight: 400; line-height: 1.4; }
.elevenx-text-footnote { font-size: var(--elevenx-font-footnote); font-weight: 400; line-height: 1.4; }
.elevenx-numeric { font-variant-numeric: tabular-nums; }
.elevenx-page :is(strong, b, h1, h2, h3, h4, h5, h6) { font-weight: var(--elevenx-weight-semibold); }

/* Buttons: variants of .elevenx-button. */
.elevenx-button-plain { background: transparent; color: var(--elevenx-primary); padding-inline: 12px; }
.elevenx-button-plain:where(:hover:not(:disabled)) { background: var(--elevenx-fill); }
.elevenx-button-destructive { color: var(--elevenx-danger); }
.elevenx-button-small { min-height: 32px; padding: 6px 14px; font-size: var(--elevenx-font-subheadline); }
.elevenx-icon-button {
  box-sizing: border-box; display: inline-grid; place-items: center; flex: none;
  width: 32px; height: 32px; padding: 0; border: 0; border-radius: 50%;
  background: transparent; color: var(--elevenx-muted); cursor: pointer;
  transition: background var(--elevenx-duration) var(--elevenx-ease), color var(--elevenx-duration) var(--elevenx-ease);
}
.elevenx-icon-button:where(:hover:not(:disabled)) { background: var(--elevenx-fill); color: var(--elevenx-foreground); }
.elevenx-icon-button:disabled { opacity: 0.4; cursor: not-allowed; }

/* Segmented control: restyles an existing group of buttons, links or labels. */
.elevenx-segmented { box-sizing: border-box; display: inline-flex; align-items: stretch; gap: 2px; padding: 2px; border-radius: 9px; background: var(--elevenx-fill); }
.elevenx-segmented > :is(button, a, label) {
  box-sizing: border-box; flex: 1 1 0; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 28px; padding: 4px 12px; border: 0; border-radius: 7px; background: transparent;
  color: var(--elevenx-foreground); font: 500 var(--elevenx-font-subheadline)/1.4 var(--elevenx-font);
  white-space: nowrap; text-decoration: none; cursor: pointer;
  transition: background var(--elevenx-duration) var(--elevenx-ease), box-shadow var(--elevenx-duration) var(--elevenx-ease);
}
.elevenx-segmented > :is(button, a, label):where(:hover) { background: var(--elevenx-fill); }
.elevenx-segmented > :is(button, a, label):is([aria-pressed="true"], [aria-selected="true"], [aria-current="page"], [aria-current="true"], .active, :has(input:checked)) {
  background: var(--elevenx-segment-thumb); box-shadow: 0 1px 3px rgba(0, 0, 0, 0.18), 0 0 0 0.5px rgba(0, 0, 0, 0.06);
}
.elevenx-segmented > :is(button, a, label):disabled, .elevenx-segmented > [aria-disabled="true"] { opacity: 0.4; cursor: not-allowed; }
.elevenx-segmented > :is(button, a, label):focus-visible { outline: 2px solid var(--elevenx-focus); outline-offset: 2px; }

/* Inset grouped list. */
.elevenx-list { box-sizing: border-box; margin: 0; padding: 0; list-style: none; overflow: hidden; border-radius: var(--elevenx-radius-control); background: var(--elevenx-surface); }
.elevenx-list-row {
  box-sizing: border-box; position: relative; display: flex; align-items: center; gap: 12px; width: 100%;
  min-height: 44px; padding: 10px 16px; border: 0; background: transparent; color: var(--elevenx-foreground);
  font: inherit; text-align: left; text-decoration: none;
}
.elevenx-list-row + .elevenx-list-row::before { content: ""; position: absolute; top: 0; left: 16px; right: 0; border-top: 1px solid var(--elevenx-border-soft); }
.elevenx-list-row-action { cursor: pointer; transition: background var(--elevenx-duration) var(--elevenx-ease); }
.elevenx-list-row-action:where(:hover) { background: var(--elevenx-fill); }
.elevenx-list-row:is([aria-selected="true"], [aria-current="page"], [aria-current="true"], .active) { background: var(--elevenx-fill-strong); }
.elevenx-list-row-detail { margin-left: auto; color: var(--elevenx-muted); font-size: var(--elevenx-font-subheadline); white-space: nowrap; }
.elevenx-list-row:focus-visible { outline: 2px solid var(--elevenx-focus); outline-offset: -2px; }

/* Sidebar source list item. */
.elevenx-sidebar-item {
  box-sizing: border-box; display: flex; align-items: center; gap: 10px; width: 100%; min-height: 36px; padding: 7px 10px;
  border: 0; border-radius: var(--elevenx-radius-sm); background: transparent; color: var(--elevenx-foreground);
  font: 400 var(--elevenx-font-callout)/1.4 var(--elevenx-font); text-align: left; text-decoration: none; cursor: pointer;
}
.elevenx-sidebar-item:where(:hover:not(:disabled)) { background: var(--elevenx-fill); }
.elevenx-sidebar-item:is([aria-current="page"], [aria-current="true"], [aria-selected="true"], [aria-pressed="true"], .active) { background: var(--elevenx-fill-strong); font-weight: 500; }
.elevenx-sidebar-item > svg { width: 18px; height: 18px; flex: none; color: var(--elevenx-muted); }
.elevenx-sidebar-item:focus-visible { outline: 2px solid var(--elevenx-focus); outline-offset: 2px; }

.elevenx-section-header { margin: 0 0 8px; color: var(--elevenx-muted); font: 600 var(--elevenx-font-subheadline)/1.4 var(--elevenx-font); letter-spacing: 0; text-transform: none; }

.elevenx-badge {
  box-sizing: border-box; display: inline-flex; align-items: center; gap: 4px; min-height: 20px; padding: 1px 8px;
  border: 0; border-radius: var(--elevenx-radius-pill); background: var(--elevenx-fill); color: var(--elevenx-muted);
  font: 500 var(--elevenx-font-footnote)/1.4 var(--elevenx-font); white-space: nowrap;
}
.elevenx-badge-success { background: var(--elevenx-success-soft); color: var(--elevenx-success); }
.elevenx-badge-warning { background: var(--elevenx-warning-soft); color: var(--elevenx-warning); }
.elevenx-badge-danger { background: var(--elevenx-danger-soft); color: var(--elevenx-danger); }

.elevenx-empty { box-sizing: border-box; display: grid; justify-items: center; gap: 8px; max-width: 420px; margin: 0 auto; padding: 48px 24px; color: var(--elevenx-muted); text-align: center; font: 400 var(--elevenx-font-callout)/1.5 var(--elevenx-font); }
.elevenx-empty > svg { width: 40px; height: 40px; margin-bottom: 4px; color: var(--elevenx-faint); }
.elevenx-empty-title { margin: 0; color: var(--elevenx-foreground); font: 600 var(--elevenx-font-title-3)/1.33 var(--elevenx-font); }
.elevenx-empty p { margin: 0; }

.elevenx-toast {
  box-sizing: border-box; max-width: min(480px, calc(100vw - 32px)); padding: 12px 16px;
  border: 1px solid var(--elevenx-glass-edge); border-radius: 14px; background: var(--elevenx-surface-raised);
  color: var(--elevenx-foreground); box-shadow: var(--elevenx-shadow); font: 500 var(--elevenx-font-subheadline)/1.4 var(--elevenx-font);
}
@supports (backdrop-filter: blur(20px)) { .elevenx-toast { background: var(--elevenx-glass); backdrop-filter: blur(24px) saturate(160%); } }

.elevenx-check { width: 18px; height: 18px; margin: 0; flex: none; accent-color: var(--elevenx-action); cursor: pointer; }
.elevenx-select { appearance: none; -webkit-appearance: none; padding-right: 36px; background-image: var(--elevenx-select-chevron); background-repeat: no-repeat; background-position: right 12px center; background-size: 14px; }
.elevenx-file { color: var(--elevenx-muted); font: 400 var(--elevenx-font-subheadline)/1.4 var(--elevenx-font); }
.elevenx-file::file-selector-button {
  margin-right: 12px; min-height: 32px; padding: 6px 14px; border: 0; border-radius: var(--elevenx-radius-pill);
  background: var(--elevenx-surface-raised); color: var(--elevenx-foreground); font: 500 var(--elevenx-font-subheadline)/1.4 var(--elevenx-font); cursor: pointer;
}

.elevenx-stat { display: grid; gap: 2px; }
.elevenx-stat-value { color: var(--elevenx-foreground); font: 600 var(--elevenx-font-title-2)/1.2 var(--elevenx-font); letter-spacing: -0.016em; font-variant-numeric: tabular-nums; }
.elevenx-stat-label { color: var(--elevenx-muted); font: 400 var(--elevenx-font-footnote)/1.4 var(--elevenx-font); }

.elevenx-disclosure {
  display: inline-flex; align-items: center; gap: 6px; padding: 4px 8px 4px 4px; border: 0; border-radius: var(--elevenx-radius-sm);
  background: transparent; color: var(--elevenx-muted); font: 500 var(--elevenx-font-subheadline)/1.4 var(--elevenx-font); list-style: none; cursor: pointer;
}
.elevenx-disclosure::-webkit-details-marker { display: none; }
.elevenx-disclosure:where(:hover) { background: var(--elevenx-fill); color: var(--elevenx-foreground); }
.elevenx-disclosure-chevron { width: 14px; height: 14px; flex: none; transition: transform var(--elevenx-duration) var(--elevenx-ease); }
.elevenx-disclosure[aria-expanded="true"] .elevenx-disclosure-chevron, details[open] > .elevenx-disclosure .elevenx-disclosure-chevron { transform: rotate(90deg); }
.elevenx-disclosure:focus-visible { outline: 2px solid var(--elevenx-focus); outline-offset: 2px; }

.elevenx-table { width: 100%; border-collapse: collapse; font-size: var(--elevenx-font-callout); font-variant-numeric: tabular-nums; }
.elevenx-table th { padding: 8px 12px; border-bottom: 1px solid var(--elevenx-border-soft); color: var(--elevenx-muted); font: 500 var(--elevenx-font-footnote)/1.4 var(--elevenx-font); text-align: left; white-space: nowrap; }
.elevenx-table td { height: 44px; padding: 8px 12px; border-bottom: 1px solid var(--elevenx-border-soft); }
.elevenx-table tr:last-child td { border-bottom: 0; }

/* Shared shell refinements also cover legacy consumers using the shell classes. */
.elevenx-product-header {
  box-sizing: border-box;
  min-height: 56px;
  gap: 16px;
  padding: 8px clamp(16px, 3vw, 32px);
  background: var(--elevenx-chrome-bg);
  border-bottom: 1px solid var(--elevenx-chrome-hairline);
  color: var(--elevenx-chrome-text);
  font: var(--elevenx-font-subheadline)/1.4 var(--elevenx-font);
  color-scheme: var(--elevenx-chrome-scheme);
}
@supports (backdrop-filter: blur(20px)) {
  .elevenx-product-header { background: var(--elevenx-chrome-overlay); backdrop-filter: blur(24px) saturate(160%); }
}
.elevenx-product-session { gap: 8px; min-width: 0; flex-wrap: wrap; justify-content: flex-end; }
.elevenx-product-identity { font-size: var(--elevenx-font-footnote); line-height: 1.35; color: var(--elevenx-chrome-muted); }
.elevenx-product-identity strong { color: var(--elevenx-chrome-text); font-size: var(--elevenx-font-subheadline); font-weight: 600; }
.elevenx-product-identity small { font-size: var(--elevenx-font-footnote); color: var(--elevenx-chrome-muted); }
.elevenx-product-session-button {
  box-sizing: border-box; display: inline-flex; align-items: center; justify-content: center;
  min-height: 32px; padding: 6px 12px; border: 1px solid transparent; border-radius: var(--elevenx-radius-pill);
  background: var(--elevenx-chrome-fill); color: var(--elevenx-chrome-text);
  font-size: var(--elevenx-font-subheadline); font-weight: 500; line-height: 1.4; text-decoration: none; cursor: pointer;
}
.elevenx-product-session-button:where(:hover:not(:disabled)) { background: var(--elevenx-chrome-surface-raised); border-color: transparent; }
.elevenx-product-brand:focus-visible, .elevenx-product-session-button:focus-visible,
.elevenx-appearance-picker select:focus-visible { outline: 2px solid var(--elevenx-chrome-primary); outline-offset: 3px; }
.elevenx-appearance-picker { font-size: var(--elevenx-font-caption); }
.elevenx-appearance-picker > span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.elevenx-appearance-picker select {
  min-height: 32px; padding: 4px 30px 4px 12px; border: 1px solid transparent; border-radius: var(--elevenx-radius-pill);
  background: var(--elevenx-chrome-fill) var(--elevenx-select-chevron) no-repeat right 10px center / 12px;
  color: var(--elevenx-chrome-text); font-size: var(--elevenx-font-subheadline); font-weight: 500;
  appearance: none; -webkit-appearance: none; color-scheme: var(--elevenx-chrome-scheme);
}
.elevenx-auth-screen { box-sizing: border-box; background: var(--elevenx-canvas); }
.elevenx-auth-card { box-sizing: border-box; max-width: 100%; border-color: var(--elevenx-border-soft); border-radius: var(--elevenx-radius-lg); padding: 36px; gap: 16px; }
.elevenx-auth-card h1 { font-size: var(--elevenx-font-title); line-height: 1.3; letter-spacing: -0.025em; }
.elevenx-auth-card p { font-size: var(--elevenx-font-body); line-height: 1.6; }
.elevenx-auth-card .elevenx-auth-eyebrow { font-size: var(--elevenx-font-caption); }
.elevenx-auth-actions { flex-wrap: wrap; }

@media (max-width: 760px) {
  .elevenx-product-header { min-height: 52px; flex-wrap: wrap; gap: 10px; padding: 8px 16px; }
  .elevenx-product-session { flex-wrap: wrap; gap: 8px; }
  .elevenx-product-identity { display: none; }
  .elevenx-product-brand img { max-width: 180px; }
}
@media (pointer: coarse) {
  .elevenx-button, .elevenx-field, .elevenx-product-session-button,
  .elevenx-appearance-picker select { min-height: var(--elevenx-control-height-touch); }
  .elevenx-segmented > :is(button, a, label) { min-height: 40px; }
  .elevenx-icon-button, .elevenx-sidebar-item { min-height: 44px; }
  .elevenx-icon-button { width: 44px; height: 44px; }
}
@media (prefers-reduced-transparency: reduce) {
  .elevenx-product-header { background: var(--elevenx-chrome-bg); backdrop-filter: none; }
}
@media (prefers-reduced-motion: reduce) {
  .elevenx-button { transition: none; }
  .elevenx-segmented > :is(button, a, label), .elevenx-icon-button, .elevenx-list-row-action, .elevenx-disclosure-chevron { transition: none; }
  .elevenx-button:active:not(:disabled) { transform: none; }
  .elevenx-auth-spinner, .elevenx-restoring-progress::after { animation: none; }
  .elevenx-restoring-progress::after { left: 0; width: 100%; opacity: 0.6; }
}
@media (prefers-contrast: more) {
  :root, :root[data-theme="light"] { --elevenx-border-soft: var(--elevenx-border); --elevenx-faint: var(--elevenx-foreground); }
  .elevenx-product-header { background: var(--elevenx-chrome-bg); backdrop-filter: none; border-bottom-color: var(--elevenx-chrome-border); }
}
@media (forced-colors: active) {
  .elevenx-segmented > :is(button, a, label):is([aria-pressed="true"], [aria-selected="true"], [aria-current="page"], [aria-current="true"], .active),
  .elevenx-sidebar-item:is([aria-current="page"], [aria-current="true"], [aria-selected="true"], [aria-pressed="true"], .active),
  .elevenx-list-row:is([aria-selected="true"], [aria-current="page"], [aria-current="true"], .active) { outline: 2px solid Highlight; outline-offset: -2px; }
}
@media print {
  :root, :root[data-theme="light"] {
    color-scheme: light;
    --elevenx-canvas: #ffffff;
    --elevenx-surface: #ffffff;
    --elevenx-surface-raised: #f0f0f3;
    --elevenx-surface-soft: #ffffff;
    --elevenx-foreground: #1d1d1f;
    --elevenx-muted: #56565b;
    --elevenx-faint: #68686d;
    --elevenx-primary: #0062c4;
    --elevenx-on-primary: #ffffff;
    --elevenx-control: #ffffff;
    --elevenx-border: #808086;
    --elevenx-border-soft: #d9d9de;
    --elevenx-success: #286c4a;
    --elevenx-warning: #805a20;
    --elevenx-danger: #a63f35;
    --elevenx-shadow: none;
    --elevenx-shadow-soft: none;
  }
}