/* ==========================================================================
   app.css — component stylesheet for the "Kerf" design system
   Hand-written, dependency-free, mobile-first. Uses only tokens.css values.
   Load order:  tokens.css  →  app.css

   Breakpoints (min-width):  48rem (768)  ·  64rem (1024)  ·  80rem (1280)
   State hooks:  [data-open="true"]  [aria-selected]  [aria-current]  [aria-busy]
                 [aria-invalid]  [data-snap="peek|half|full"]  :disabled
   Contents
     1 Base            6 Cards            11 Table          16 Marketing blocks
     2 Layout          7 Badges, chips    12 Empty, skeleton, progress
     3 Brand, nav      8 Tabs             13 Workspace
     4 Buttons         9 Modal, sheet     14 Assistant
     5 Forms          10 Toast, callout   15 Utilities
   ========================================================================== */

/* 1 ── Base ─────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--nav-h) + var(--space-4)); }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  font-stretch: var(--font-width-text);
  line-height: var(--leading-body);
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg, video, canvas { display: block; max-width: 100%; }
img { height: auto; }
h1, h2, h3, h4, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
ul[class], ol[class] { padding: 0; list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; letter-spacing: inherit; }
button { cursor: pointer; }
a { color: var(--color-primary-text); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }
::selection { background: var(--color-selection); color: var(--color-text); }
:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; border-radius: var(--radius-sm); }
[hidden] { display: none !important; }
hr, .divider { border: 0; border-top: var(--border-w) solid var(--color-border); margin: 0; }

/* Type roles */
.display, .h1, .h2, .h3, h1, h2, h3 { font-weight: var(--weight-bold); line-height: var(--leading-heading); letter-spacing: var(--tracking-heading); font-stretch: var(--font-width-heading); text-wrap: balance; }
.display { font-size: var(--text-display); font-weight: var(--weight-black); line-height: var(--leading-display); letter-spacing: var(--tracking-display); font-stretch: var(--font-width-display); }
h1, .h1 { font-size: var(--text-h1); font-stretch: var(--font-width-display); }
h2, .h2 { font-size: var(--text-h2); }
h3, .h3 { font-size: var(--text-h3); font-weight: var(--weight-semibold); }
.title { font-size: var(--text-title); font-weight: var(--weight-semibold); line-height: var(--leading-snug); font-stretch: var(--font-width-heading); }
.lead { font-size: var(--text-body-lg); color: var(--color-text-muted); max-width: 38em; text-wrap: pretty; }
.small { font-size: var(--text-body-sm); }
.caption { font-size: var(--text-caption); line-height: var(--leading-snug); color: var(--color-text-subtle); }
.muted { color: var(--color-text-muted); }
.subtle { color: var(--color-text-subtle); }
/* Overline: the "part number" voice — mono, caps, tracked. */
.overline { font-family: var(--font-mono); font-size: var(--text-overline); font-weight: var(--weight-medium); line-height: 1.4; letter-spacing: var(--tracking-overline); text-transform: uppercase; color: var(--color-text-subtle); }
.overline--primary { color: var(--color-primary-text); }
.overline--accent { color: var(--color-accent-text); }
/* Data: every dimension, count, price and id is mono with tabular figures. */
.data, code, kbd, samp { font-family: var(--font-mono); font-size: var(--text-data); font-weight: var(--weight-medium); font-variant-numeric: tabular-nums; font-feature-settings: "zero" 1; letter-spacing: 0; }
code { font-size: 0.875em; padding: 0.1em 0.35em; background: var(--color-surface-sunken); border: var(--border-w) solid var(--color-border); border-radius: var(--radius-sm); }
.unit { color: var(--color-text-subtle); margin-left: 0.2em; }

/* 2 ── Layout ───────────────────────────────────────────────────────────── */
.container { width: 100%; max-width: calc(var(--container) + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter); }
.container--narrow { max-width: calc(var(--container-narrow) + 2 * var(--gutter)); }
.section { padding-block: var(--section-y); }
.section--band { background: var(--color-bg-subtle); border-block: var(--border-w) solid var(--color-border); }
.section__head { display: grid; gap: var(--space-3); margin-bottom: var(--space-6); max-width: 44rem; }

.stack { display: flex; flex-direction: column; gap: var(--stack-gap, var(--space-4)); }
.stack--1 { --stack-gap: var(--space-1); } .stack--2 { --stack-gap: var(--space-2); } .stack--3 { --stack-gap: var(--space-3); }
.stack--5 { --stack-gap: var(--space-5); } .stack--6 { --stack-gap: var(--space-6); } .stack--7 { --stack-gap: var(--space-7); }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: var(--cluster-gap, var(--space-3)); }
.cluster--between { justify-content: space-between; }
.cluster--tight { --cluster-gap: var(--space-2); }
/* Auto grid: as many columns as fit, never narrower than --grid-min. */
.grid { display: grid; gap: var(--grid-gap, var(--space-4)); grid-template-columns: repeat(auto-fill, minmax(min(var(--grid-min, 16rem), 100%), 1fr)); }
.grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
.split { display: grid; gap: var(--space-6); }
@media (min-width: 48rem) {
  :root { --gutter: var(--space-5); }
  .grid { --grid-gap: var(--space-5); }
  .grid--2, .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .split { grid-template-columns: 1fr 1fr; align-items: center; gap: var(--space-7); }
}
@media (min-width: 64rem) {
  :root { --gutter: var(--space-6); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

/* The rib motif: a strip of evenly pitched vertical ribs. Decorative only. */
.ribs { height: var(--ribs-h, 12px); background: repeating-linear-gradient(90deg, var(--ribs-color, var(--color-rib)) 0 var(--rib-w), transparent var(--rib-w) calc(var(--rib-w) + var(--rib-gap))); }
.ribs--primary { --ribs-color: var(--color-primary); }
/* Registration ticks on the four corners of a frame (viewport, hero media, figures). */
.ticks { position: relative; }
.ticks::before, .ticks::after { content: ""; position: absolute; inset: var(--space-3); pointer-events: none; z-index: 1;
  --t: var(--ticks-color, var(--color-text-subtle));
  background:
    linear-gradient(var(--t), var(--t)) left top / 12px 1px no-repeat, linear-gradient(var(--t), var(--t)) left top / 1px 12px no-repeat,
    linear-gradient(var(--t), var(--t)) right bottom / 12px 1px no-repeat, linear-gradient(var(--t), var(--t)) right bottom / 1px 12px no-repeat; }
.ticks::after { transform: scaleX(-1); }

/* 3 ── Brand, top nav, mobile drawer ───────────────────────────────────── */
/* The brand is two swappable parts: any 1:1 mark + live text from configuration. */
.brand { display: inline-flex; align-items: center; gap: 0.6em; color: var(--color-text); text-decoration: none; font-size: 1.125rem; line-height: 1; }
.brand__mark { height: var(--brand-logo-height); width: auto; flex: none; fill: currentColor; stroke: var(--color-primary); }
/* Sprite marks (<use href="#mark">) take colour from these two inherited properties: ribs = fill, toolpath = stroke. */
.brand__name { font-weight: 760; font-stretch: var(--font-width-display); letter-spacing: -0.01em; white-space: nowrap; }
.brand__name > span { font-weight: var(--weight-regular); }

.nav { position: sticky; top: 0; z-index: var(--z-nav); height: var(--nav-h); background: color-mix(in srgb, var(--color-bg) 86%, transparent); -webkit-backdrop-filter: saturate(1.4) blur(14px); backdrop-filter: saturate(1.4) blur(14px); border-bottom: var(--border-w) solid var(--color-border); }
.nav__inner { height: 100%; display: flex; align-items: center; gap: var(--space-4); }
.nav__links { display: none; align-items: center; gap: var(--space-1); margin-inline: var(--space-4) auto; }
.nav__link { display: inline-flex; align-items: center; height: var(--control-h-sm); padding-inline: var(--space-3); border-radius: var(--radius-md); color: var(--color-text-muted); font-size: var(--text-body-sm); font-weight: var(--weight-medium); text-decoration: none; transition: color var(--dur-fast), background-color var(--dur-fast); }
.nav__link:hover { color: var(--color-text); background: var(--color-bg-subtle); }
.nav__link[aria-current="page"] { color: var(--color-text); box-shadow: inset 0 -2px 0 var(--color-primary); border-radius: 0; }
.nav__actions { display: flex; align-items: center; gap: var(--space-2); margin-left: auto; }
.nav__actions .nav__desktop { display: none; }
@media (min-width: 64rem) {
  .nav__links { display: flex; }
  .nav__actions { margin-left: 0; }
  .nav__actions .nav__desktop { display: inline-flex; }
  .nav__toggle { display: none !important; }
}

.scrim { position: fixed; inset: 0; z-index: var(--z-drawer); background: var(--color-overlay); opacity: 0; visibility: hidden; transition: opacity var(--dur-base) var(--ease-out), visibility 0s var(--dur-base); }
.scrim[data-open="true"] { opacity: 1; visibility: visible; transition-delay: 0s; }
.drawer { position: fixed; inset: 0 0 0 auto; z-index: calc(var(--z-drawer) + 1); width: min(22rem, 88vw); display: flex; flex-direction: column; background: var(--color-surface); border-left: var(--border-w) solid var(--color-border); box-shadow: var(--shadow-lg); transform: translateX(100%); visibility: hidden; transition: transform var(--dur-slow) var(--ease-sheet), visibility 0s var(--dur-slow); padding-bottom: env(safe-area-inset-bottom); }
.drawer[data-open="true"] { transform: none; visibility: visible; transition-delay: 0s; }
.drawer__head { display: flex; align-items: center; justify-content: space-between; height: var(--nav-h); padding-inline: var(--space-4); border-bottom: var(--border-w) solid var(--color-border); flex: none; }
.drawer__body { flex: 1; overflow-y: auto; padding: var(--space-3); display: flex; flex-direction: column; gap: var(--space-1); }
.drawer__link { display: flex; align-items: center; gap: var(--space-3); min-height: var(--control-h-lg); padding-inline: var(--space-3); border-radius: var(--radius-md); color: var(--color-text); font-size: var(--text-body-lg); font-weight: var(--weight-semibold); font-stretch: var(--font-width-heading); text-decoration: none; }
.drawer__link:hover, .drawer__link[aria-current="page"] { background: var(--color-bg-subtle); }
.drawer__link[aria-current="page"] { box-shadow: inset 3px 0 0 var(--color-primary); }
.drawer__foot { padding: var(--space-4); border-top: var(--border-w) solid var(--color-border); display: grid; gap: var(--space-2); }

/* 4 ── Buttons ─────────────────────────────────────────────────────────── */
.btn {
  --btn-bg: var(--color-surface-raised); --btn-fg: var(--color-text); --btn-bd: var(--color-border-control);
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: var(--control-h); padding: 0 var(--space-4);
  background: var(--btn-bg); color: var(--btn-fg); border: var(--border-w) solid var(--btn-bd); border-radius: var(--radius-md);
  font-size: var(--text-body-sm); font-weight: var(--weight-semibold); font-stretch: var(--font-width-heading); letter-spacing: var(--tracking-label); line-height: 1.2; text-decoration: none; white-space: nowrap;
  cursor: pointer; user-select: none; -webkit-tap-highlight-color: transparent;
  transition: background-color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out), transform var(--dur-instant) var(--ease-out);
}
.btn:hover { --btn-bg: var(--color-bg-subtle); --btn-bd: var(--color-text); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { border-radius: var(--radius-md); }
.btn--primary { --btn-bg: var(--color-primary); --btn-fg: var(--color-on-primary); --btn-bd: transparent; }
.btn--primary:hover { --btn-bg: var(--color-primary-hover); --btn-bd: transparent; }
.btn--primary:active { --btn-bg: var(--color-primary-active); }
.btn--inverse { --btn-bg: var(--color-surface-inverse); --btn-fg: var(--color-text-inverse); --btn-bd: transparent; }
.btn--inverse:hover { --btn-bg: var(--color-surface-inverse); --btn-bd: transparent; opacity: 0.88; }
.btn--accent { --btn-bg: var(--color-accent-soft); --btn-fg: var(--color-on-accent-soft); --btn-bd: transparent; }
.btn--accent:hover { --btn-bg: var(--color-accent-soft); --btn-bd: var(--color-accent-text); }
.btn--ghost { --btn-bg: transparent; --btn-bd: transparent; }
.btn--ghost:hover { --btn-bg: var(--color-bg-subtle); --btn-bd: transparent; }
.btn--danger { --btn-bg: var(--color-danger); --btn-fg: var(--color-on-danger); --btn-bd: transparent; }
.btn--danger:hover { --btn-bg: var(--color-danger); --btn-bd: transparent; opacity: 0.9; }
.btn--sm { min-height: var(--control-h-sm); padding-inline: var(--space-3); font-size: var(--text-label); }
.btn--lg { min-height: var(--control-h-lg); padding-inline: var(--space-5); font-size: var(--text-body); }
.btn--block { display: flex; width: 100%; }
.btn--icon { width: var(--control-h); padding: 0; flex: none; }
.btn--icon.btn--sm { width: var(--control-h-sm); }
.btn:disabled, .btn[aria-disabled="true"] { --btn-bg: var(--color-bg-subtle); --btn-fg: var(--color-text-disabled); --btn-bd: var(--color-border); cursor: not-allowed; transform: none; opacity: 1; }
.btn[aria-busy="true"] { pointer-events: none; }
.btn[aria-busy="true"]::before { content: ""; width: 14px; height: 14px; flex: none; background: repeating-linear-gradient(90deg, currentColor 0 2px, transparent 2px 4px); animation: rib-load 0.7s steps(4) infinite; }
@keyframes rib-load { to { background-position: 16px 0; } }
/* Small touch targets grow an invisible hit area so they still measure 44 px. */
.btn--sm, .chip, .tab, .segmented__option { position: relative; }
@media (pointer: coarse) { .btn--sm::after { content: ""; position: absolute; inset: -4px 0; } }
.icon { width: 1.25em; height: 1.25em; flex: none; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.icon--lg { width: 1.75rem; height: 1.75rem; stroke-width: 1.5; }

/* 5 ── Forms ───────────────────────────────────────────────────────────── */
.field { display: grid; gap: var(--space-2); }
.label { font-size: var(--text-label); font-weight: var(--weight-semibold); letter-spacing: var(--tracking-label); color: var(--color-text); display: flex; justify-content: space-between; align-items: baseline; gap: var(--space-3); }
.label__opt { font-weight: var(--weight-regular); color: var(--color-text-subtle); }
.hint { font-size: var(--text-caption); color: var(--color-text-subtle); line-height: var(--leading-snug); }
.error { font-size: var(--text-caption); color: var(--color-danger-text); font-weight: var(--weight-medium); line-height: var(--leading-snug); display: flex; gap: var(--space-1); align-items: center; }

.input, .select, .textarea {
  width: 100%; min-height: var(--control-h); padding: 0 var(--space-3);
  background: var(--color-surface-raised); color: var(--color-text);
  border: var(--border-w) solid var(--color-border-control); border-radius: var(--radius-md);
  font-size: var(--text-body); /* 16 px: prevents iOS zoom on focus */
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
  appearance: none; -webkit-appearance: none;
}
.textarea { padding-block: var(--space-3); min-height: 6rem; line-height: var(--leading-snug); resize: vertical; }
.input::placeholder, .textarea::placeholder { color: var(--color-text-subtle); opacity: 1; }
.input:hover, .select:hover, .textarea:hover { border-color: var(--color-text); }
.input:focus-visible, .select:focus-visible, .textarea:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 1px; border-color: var(--color-focus); border-radius: var(--radius-md); }
.input[aria-invalid="true"], .select[aria-invalid="true"], .textarea[aria-invalid="true"] { border-color: var(--color-danger-text); box-shadow: inset 0 0 0 1px var(--color-danger-text); }
.input:disabled, .select:disabled, .textarea:disabled { background: var(--color-bg-subtle); color: var(--color-text-disabled); border-color: var(--color-border); cursor: not-allowed; }
.input--data { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: var(--text-body-sm); font-weight: var(--weight-medium); }
.select { padding-right: 2.5rem; cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, currentColor 50%), linear-gradient(-45deg, transparent 50%, currentColor 50%);
  background-size: 6px 6px, 6px 6px; background-position: right 1.1rem center, right calc(1.1rem - 6px) center; background-repeat: no-repeat; }
/* Input with a unit or prefix: "2400 | mm" */
.affix { display: flex; align-items: stretch; min-height: var(--control-h); background: var(--color-surface-raised); border: var(--border-w) solid var(--color-border-control); border-radius: var(--radius-md); transition: border-color var(--dur-fast); }
.affix:hover { border-color: var(--color-text); }
.affix:focus-within { outline: 2px solid var(--color-focus); outline-offset: 1px; border-color: var(--color-focus); }
.affix > .input { border: 0; background: transparent; min-height: 0; min-width: 0; outline: 0 !important; }
.affix__unit { display: flex; align-items: center; padding-inline: var(--space-3); border-left: var(--border-w) solid var(--color-border); color: var(--color-text-subtle); font-family: var(--font-mono); font-size: var(--text-caption); font-weight: var(--weight-medium); }

.check { display: flex; align-items: flex-start; gap: var(--space-3); min-height: var(--control-h); padding-block: 0.6rem; cursor: pointer; font-size: var(--text-body-sm); line-height: var(--leading-snug); }
.check input { appearance: none; -webkit-appearance: none; flex: none; width: 1.25rem; height: 1.25rem; margin: 0; background: var(--color-surface-raised); border: var(--border-w-strong) solid var(--color-border-control); border-radius: var(--radius-sm); display: grid; place-content: center; cursor: pointer; transition: background-color var(--dur-fast), border-color var(--dur-fast); }
.check input[type="radio"] { border-radius: 50%; }
.check input::before { content: ""; width: 0.7rem; height: 0.7rem; transform: scale(0); transition: transform var(--dur-fast) var(--ease-out); background: var(--color-on-primary); clip-path: polygon(14% 52%, 0 66%, 38% 100%, 100% 22%, 86% 10%, 37% 70%); }
.check input[type="radio"]::before { clip-path: none; border-radius: 50%; width: 0.5rem; height: 0.5rem; }
.check input:checked { background: var(--color-primary); border-color: var(--color-primary); }
.check input:checked::before { transform: scale(1); }
.check input:disabled { background: var(--color-bg-subtle); border-color: var(--color-border); cursor: not-allowed; }

.toggle { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); min-height: var(--control-h); cursor: pointer; font-size: var(--text-body-sm); font-weight: var(--weight-medium); }
.toggle input { appearance: none; -webkit-appearance: none; flex: none; position: relative; width: 2.75rem; height: 1.625rem; margin: 0; background: var(--color-surface-sunken); border: var(--border-w-strong) solid var(--color-border-control); border-radius: var(--radius-full); cursor: pointer; transition: background-color var(--dur-base) var(--ease-out), border-color var(--dur-base); }
.toggle input::before { content: ""; position: absolute; top: 50%; left: 3px; width: 1rem; height: 1rem; border-radius: 50%; background: var(--color-border-control); transform: translateY(-50%); transition: transform var(--dur-base) var(--ease-out), background-color var(--dur-base); }
.toggle input:checked { background: var(--color-primary); border-color: var(--color-primary); }
.toggle input:checked::before { transform: translate(1.1rem, -50%); background: var(--color-on-primary); }
.toggle input:disabled { opacity: 0.5; cursor: not-allowed; }

/* Range: a rib for a thumb, the filled track in the action colour. Set --range-pct (0–100 %) from script. */
.range { appearance: none; -webkit-appearance: none; width: 100%; height: var(--control-h); margin: 0; background: transparent; cursor: pointer; touch-action: pan-y; }
.range::-webkit-slider-runnable-track { height: 4px; border-radius: 2px; background: linear-gradient(90deg, var(--color-primary) var(--range-pct, 50%), var(--color-border-strong) var(--range-pct, 50%)); }
.range::-moz-range-track { height: 4px; border-radius: 2px; background: var(--color-border-strong); }
.range::-moz-range-progress { height: 4px; border-radius: 2px; background: var(--color-primary); }
.range::-webkit-slider-thumb { -webkit-appearance: none; width: 12px; height: 26px; margin-top: -11px; background: var(--color-text); border: 0; border-radius: 3px; box-shadow: 0 0 0 3px var(--range-halo, var(--color-surface)); transition: transform var(--dur-fast) var(--ease-out), background-color var(--dur-fast); }
.range::-moz-range-thumb { width: 12px; height: 26px; background: var(--color-text); border: 0; border-radius: 3px; box-shadow: 0 0 0 3px var(--range-halo, var(--color-surface)); }
.range:hover::-webkit-slider-thumb, .range:active::-webkit-slider-thumb { background: var(--color-primary); }
.range:active::-webkit-slider-thumb { transform: scaleY(1.12); }
.range:focus-visible { outline: 0; }
.range:focus-visible::-webkit-slider-thumb { outline: 2px solid var(--color-focus); outline-offset: 3px; }
.range:focus-visible::-moz-range-thumb { outline: 2px solid var(--color-focus); outline-offset: 3px; }
.range:disabled { opacity: 0.45; cursor: not-allowed; }

/* Parameter row: label left, live mono value right, slider beneath. */
.param { display: grid; grid-template-columns: 1fr auto; align-items: baseline; column-gap: var(--space-3); }
.param__label { font-size: var(--text-label); font-weight: var(--weight-semibold); letter-spacing: var(--tracking-label); }
.param__value { font-family: var(--font-mono); font-size: var(--text-label); font-weight: var(--weight-medium); font-variant-numeric: tabular-nums; color: var(--color-text); }
.param .range { grid-column: 1 / -1; }

.segmented { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; padding: 3px; gap: 2px; background: var(--color-surface-sunken); border: var(--border-w) solid var(--color-border); border-radius: var(--radius-md); }
.segmented__option { display: flex; }
.segmented__option input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.segmented__option span { flex: 1; display: flex; align-items: center; justify-content: center; gap: var(--space-2); min-height: calc(var(--control-h) - 8px); padding-inline: var(--space-3); border-radius: var(--radius-sm); font-size: var(--text-label); font-weight: var(--weight-semibold); letter-spacing: var(--tracking-label); color: var(--color-text-muted); white-space: nowrap; transition: background-color var(--dur-fast), color var(--dur-fast); }
.segmented__option input:checked + span { background: var(--color-surface-raised); color: var(--color-text); box-shadow: var(--shadow-sm), inset 0 0 0 1px var(--color-border-strong); }
.segmented__option input:focus-visible + span { outline: 2px solid var(--color-focus); outline-offset: 1px; }
.segmented__option:hover span { color: var(--color-text); }

/* 6 ── Cards ───────────────────────────────────────────────────────────── */
.card { display: flex; flex-direction: column; background: var(--color-surface); border: var(--border-w) solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; }
.card__body { padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-3); flex: 1; }
.card__foot { padding: var(--space-3) var(--space-4); border-top: var(--border-w) solid var(--color-border); display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.card--interactive { position: relative; transition: border-color var(--dur-fast) var(--ease-out), transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out); }
.card--interactive:hover { border-color: var(--color-border-control); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card--interactive:focus-within { border-color: var(--color-focus); }
.card__link { color: inherit; text-decoration: none; }
.card__link::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.card__link:focus-visible { outline: 0; }
.card--interactive:has(.card__link:focus-visible) { outline: 2px solid var(--color-focus); outline-offset: 2px; }

/* Design card: preview on top, facts in mono beneath. */
.design-card__media { position: relative; aspect-ratio: 4 / 3; background: var(--color-surface-sunken); overflow: hidden; }
.design-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-slow) var(--ease-out); }
.design-card:hover .design-card__media img { transform: scale(1.03); }
.design-card__badges { position: absolute; top: var(--space-3); left: var(--space-3); display: flex; gap: var(--space-1); z-index: 2; }
.design-card__fav { position: absolute; top: var(--space-2); right: var(--space-2); z-index: 2; }
.design-card__meta { display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-3); font-family: var(--font-mono); font-size: var(--text-caption); font-weight: var(--weight-medium); color: var(--color-text-subtle); font-variant-numeric: tabular-nums; }

/* Machine card: a nameplate. */
.machine-card__head { display: flex; align-items: flex-start; gap: var(--space-3); }
.machine-card__icon { flex: none; width: 2.75rem; height: 2.75rem; display: grid; place-items: center; background: var(--color-surface-sunken); border: var(--border-w) solid var(--color-border); border-radius: var(--radius-md); color: var(--color-text); }
.spec { display: grid; grid-template-columns: auto 1fr; gap: var(--space-1) var(--space-4); margin: 0; font-size: var(--text-body-sm); }
.spec dt { color: var(--color-text-subtle); }
.spec dd { margin: 0; text-align: right; font-family: var(--font-mono); font-size: var(--text-label); font-weight: var(--weight-medium); font-variant-numeric: tabular-nums; }
.status { display: inline-flex; align-items: center; gap: 0.45em; font-size: var(--text-caption); font-weight: var(--weight-medium); color: var(--color-text-muted); }
.status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--color-text-disabled); }
.status--ok { color: var(--color-success-text); } .status--ok::before { background: currentColor; }
.status--busy { color: var(--color-primary-text); } .status--busy::before { background: currentColor; animation: pulse 1.6s var(--ease-in-out) infinite; }
.status--warn { color: var(--color-warning-text); } .status--warn::before { background: currentColor; border-radius: 1px; }
@keyframes pulse { 50% { opacity: 0.35; } }

/* Plan card */
.plan-card { position: relative; }
.plan-card .card__body { padding: var(--space-5); gap: var(--space-4); }
.plan-card__price { display: flex; align-items: baseline; gap: var(--space-2); }
.plan-card__amount { font-size: clamp(2.5rem, 2rem + 2vw, 3.25rem); font-weight: var(--weight-black); font-stretch: var(--font-width-display); letter-spacing: var(--tracking-display); line-height: 1; font-variant-numeric: tabular-nums; }
.plan-card__period { font-family: var(--font-mono); font-size: var(--text-caption); color: var(--color-text-subtle); }
.plan-card__features { display: grid; gap: var(--space-2); font-size: var(--text-body-sm); }
.plan-card__features li { display: grid; grid-template-columns: 1.25rem 1fr; gap: var(--space-2); align-items: start; }
.plan-card__features li::before { content: ""; width: 0.8rem; height: 0.8rem; margin-top: 0.3em; background: var(--color-primary-text); clip-path: polygon(14% 52%, 0 66%, 38% 100%, 100% 22%, 86% 10%, 37% 70%); }
.plan-card__features li[data-off]::before { background: var(--color-text-disabled); clip-path: polygon(0 42%, 100% 42%, 100% 58%, 0 58%); }
.plan-card__features li[data-off] { color: var(--color-text-subtle); }
.plan-card--featured { border-color: var(--color-primary); box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-md); }
.plan-card--featured::before { content: ""; height: 10px; flex: none; background: repeating-linear-gradient(90deg, var(--color-primary) 0 var(--rib-w), transparent var(--rib-w) calc(var(--rib-w) + var(--rib-gap))); background-color: var(--color-primary-soft); }

/* 7 ── Badges, chips, avatar ───────────────────────────────────────────── */
.badge { display: inline-flex; align-items: center; gap: 0.4em; height: 1.375rem; padding-inline: 0.5rem; background: var(--color-bg-subtle); color: var(--color-text-muted); border: var(--border-w) solid var(--color-border); border-radius: var(--radius-sm); font-family: var(--font-mono); font-size: var(--text-overline); font-weight: var(--weight-semibold); letter-spacing: 0.06em; text-transform: uppercase; white-space: nowrap; line-height: 1; }
.badge--primary { background: var(--color-primary-soft); color: var(--color-on-primary-soft); border-color: transparent; }
.badge--accent { background: var(--color-accent-soft); color: var(--color-on-accent-soft); border-color: transparent; }
.badge--success { background: var(--color-success-soft); color: var(--color-on-success-soft); border-color: transparent; }
.badge--warning { background: var(--color-warning-soft); color: var(--color-on-warning-soft); border-color: transparent; }
.badge--danger { background: var(--color-danger-soft); color: var(--color-on-danger-soft); border-color: transparent; }
.badge--solid { background: var(--color-surface-inverse); color: var(--color-text-inverse); border-color: transparent; }
.badge--dot::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

.chip { display: inline-flex; align-items: center; gap: var(--space-2); min-height: var(--control-h-sm); padding-inline: var(--space-3); background: var(--color-surface); color: var(--color-text-muted); border: var(--border-w) solid var(--color-border-strong); border-radius: var(--radius-full); font-size: var(--text-label); font-weight: var(--weight-medium); cursor: pointer; white-space: nowrap; transition: border-color var(--dur-fast), color var(--dur-fast), background-color var(--dur-fast); }
.chip:hover { color: var(--color-text); border-color: var(--color-text); }
.chip[aria-pressed="true"] { background: var(--color-surface-inverse); color: var(--color-text-inverse); border-color: transparent; }
.avatar { width: 2.25rem; height: 2.25rem; flex: none; display: grid; place-items: center; background: var(--color-surface-inverse); color: var(--color-text-inverse); border-radius: var(--radius-md); font-size: var(--text-label); font-weight: var(--weight-bold); font-stretch: var(--font-width-display); }

/* 8 ── Tabs ────────────────────────────────────────────────────────────── */
.tabs { display: flex; gap: var(--space-1); overflow-x: auto; scrollbar-width: none; border-bottom: var(--border-w) solid var(--color-border); -webkit-overflow-scrolling: touch; }
.tabs::-webkit-scrollbar { display: none; }
.tab { flex: none; display: inline-flex; align-items: center; gap: var(--space-2); min-height: var(--control-h); padding-inline: var(--space-3); background: none; border: 0; border-bottom: 2px solid transparent; margin-bottom: -1px; color: var(--color-text-muted); font-size: var(--text-body-sm); font-weight: var(--weight-semibold); font-stretch: var(--font-width-heading); white-space: nowrap; transition: color var(--dur-fast), border-color var(--dur-fast); }
.tab:hover { color: var(--color-text); }
.tab[aria-selected="true"] { color: var(--color-text); border-bottom-color: var(--color-primary); }
.tab__count { font-family: var(--font-mono); font-size: var(--text-overline); color: var(--color-text-subtle); font-weight: var(--weight-medium); }

/* 9 ── Modal (bottom sheet on phones) ──────────────────────────────────── */
.modal { position: fixed; inset: 0; z-index: var(--z-modal); display: flex; align-items: flex-end; justify-content: center; visibility: hidden; transition: visibility 0s var(--dur-slow); }
.modal[data-open="true"] { visibility: visible; transition-delay: 0s; }
.modal__scrim { position: absolute; inset: 0; background: var(--color-overlay); opacity: 0; transition: opacity var(--dur-base) var(--ease-out); }
.modal[data-open="true"] .modal__scrim { opacity: 1; }
.modal__dialog { position: relative; width: 100%; max-height: 92dvh; display: flex; flex-direction: column; background: var(--color-surface); border: var(--border-w) solid var(--color-border); border-bottom: 0; border-radius: var(--radius-xl) var(--radius-xl) 0 0; box-shadow: var(--shadow-lg); transform: translateY(100%); transition: transform var(--dur-slow) var(--ease-sheet); padding-bottom: env(safe-area-inset-bottom); }
.modal[data-open="true"] .modal__dialog { transform: none; }
.modal__dialog::before { content: ""; align-self: center; width: 36px; height: 4px; margin-top: var(--space-2); border-radius: 2px; background: var(--color-border-strong); flex: none; }
.modal__head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding: var(--space-3) var(--space-4) var(--space-3) var(--space-5); }
.modal__body { padding: var(--space-2) var(--space-5) var(--space-5); overflow-y: auto; display: grid; gap: var(--space-4); }
.modal__foot { display: grid; gap: var(--space-2); padding: var(--space-4) var(--space-5); border-top: var(--border-w) solid var(--color-border); }
@media (min-width: 48rem) {
  .modal { align-items: center; padding: var(--space-5); }
  .modal__dialog { width: min(32rem, 100%); border: var(--border-w) solid var(--color-border); border-radius: var(--radius-xl); transform: translateY(12px) scale(0.98); opacity: 0; transition: transform var(--dur-base) var(--ease-out), opacity var(--dur-base) var(--ease-out); }
  .modal[data-open="true"] .modal__dialog { opacity: 1; }
  .modal__dialog::before { display: none; }
  .modal__head { padding-top: var(--space-4); }
  .modal__foot { display: flex; justify-content: flex-end; }
}
/* Static presentation for documentation pages */
.modal--static { position: relative; visibility: visible; inset: auto; z-index: auto; padding: 0; }
.modal--static .modal__dialog { transform: none; opacity: 1; box-shadow: var(--shadow-md); }

/* 10 ── Toast, callout ─────────────────────────────────────────────────── */
.toast-region { position: fixed; z-index: var(--z-toast); left: var(--space-3); right: var(--space-3); bottom: calc(var(--space-3) + env(safe-area-inset-bottom)); display: grid; gap: var(--space-2); pointer-events: none; }
@media (min-width: 48rem) { .toast-region { left: auto; right: var(--space-5); bottom: var(--space-5); width: 24rem; } }
.toast { pointer-events: auto; display: grid; grid-template-columns: auto 1fr auto; align-items: start; gap: var(--space-3); padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4); background: var(--color-surface-raised); color: var(--color-text); border: var(--border-w) solid var(--color-border-strong); border-left: 3px solid var(--toast-accent, var(--color-border-control)); border-radius: var(--radius-md); box-shadow: var(--shadow-lg); font-size: var(--text-body-sm); line-height: var(--leading-snug); animation: toast-in var(--dur-slow) var(--ease-sheet) both; }
.toast__icon { width: 1.25rem; height: 1.25rem; margin-top: 0.1em; color: var(--toast-accent, var(--color-text-muted)); }
.toast__title { font-weight: var(--weight-semibold); }
.toast__text { color: var(--color-text-muted); }
.toast--success { --toast-accent: var(--color-success-text); } .toast--danger { --toast-accent: var(--color-danger-text); } .toast--info { --toast-accent: var(--color-accent-text); }
.toast--static { animation: none; }
@keyframes toast-in { from { opacity: 0; transform: translateY(16px); } }

.callout { display: grid; grid-template-columns: auto 1fr; gap: var(--space-3); padding: var(--space-4); background: var(--color-surface); border: var(--border-w) solid var(--color-border); border-left: 3px solid var(--color-border-control); border-radius: var(--radius-md); font-size: var(--text-body-sm); }
.callout--accent { background: var(--color-accent-soft); color: var(--color-on-accent-soft); border-color: transparent; border-left-color: var(--color-accent-text); }
.callout--warning { background: var(--color-warning-soft); color: var(--color-on-warning-soft); border-color: transparent; border-left-color: var(--color-warning-text); }
.callout--danger { background: var(--color-danger-soft); color: var(--color-on-danger-soft); border-color: transparent; border-left-color: var(--color-danger-text); }

/* 11 ── Table (collapses to cards below 48rem) ─────────────────────────── */
.table-wrap { border: var(--border-w) solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface); overflow: hidden; }
.table { width: 100%; border-collapse: collapse; font-size: var(--text-body-sm); }
.table th { text-align: left; padding: var(--space-3) var(--space-4); font-family: var(--font-mono); font-size: var(--text-overline); font-weight: var(--weight-medium); letter-spacing: var(--tracking-overline); text-transform: uppercase; color: var(--color-text-subtle); background: var(--color-bg-subtle); border-bottom: var(--border-w) solid var(--color-border); white-space: nowrap; }
.table td { padding: var(--space-3) var(--space-4); border-bottom: var(--border-w) solid var(--color-border); vertical-align: middle; }
.table tr:last-child td { border-bottom: 0; }
.table td[data-primary] { min-width: 11rem; font-weight: var(--weight-semibold); }
.table tbody tr:hover { background: var(--color-bg-subtle); }
.table .num { text-align: right; font-family: var(--font-mono); font-size: var(--text-label); font-weight: var(--weight-medium); font-variant-numeric: tabular-nums; white-space: nowrap; }
@media (max-width: 47.99rem) {
  .table-wrap { border: 0; background: none; border-radius: 0; overflow: visible; }
  .table--stack thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .table--stack, .table--stack tbody, .table--stack tr, .table--stack td { display: block; width: 100%; }
  .table--stack tr { background: var(--color-surface); border: var(--border-w) solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-2) var(--space-4); margin-bottom: var(--space-3); }
  .table--stack td { display: flex; justify-content: space-between; align-items: center; gap: var(--space-4); padding: var(--space-2) 0; border-bottom: var(--border-w) solid var(--color-border); text-align: right; min-height: 2.5rem; }
  .table--stack td:last-child { border-bottom: 0; }
  .table--stack td::before { content: attr(data-label); flex: none; font-family: var(--font-mono); font-size: var(--text-overline); letter-spacing: var(--tracking-overline); text-transform: uppercase; color: var(--color-text-subtle); text-align: left; }
  .table--stack td[data-primary] { font-weight: var(--weight-semibold); font-size: var(--text-body); text-align: left; justify-content: flex-start; }
  .table--stack td[data-primary]::before { display: none; }
  .table--stack tbody tr:hover { background: var(--color-surface); }
}

/* 12 ── Empty state, skeleton, progress ────────────────────────────────── */
.empty { display: grid; justify-items: center; text-align: center; gap: var(--space-3); padding: var(--space-7) var(--space-5); border: var(--border-w) dashed var(--color-border-strong); border-radius: var(--radius-lg); background: var(--color-surface); }
.empty__art { width: 96px; height: 56px; margin-bottom: var(--space-2); background: repeating-linear-gradient(90deg, var(--color-border-strong) 0 6px, transparent 6px 12px); -webkit-mask: radial-gradient(ellipse 50% 60% at 50% 100%, transparent 98%, #000) , linear-gradient(#000, #000); -webkit-mask-composite: source-in; mask: radial-gradient(ellipse 50% 60% at 50% 100%, transparent 98%, #000); border-radius: 2px; }
.empty__text { max-width: 26rem; color: var(--color-text-muted); font-size: var(--text-body-sm); }

.skeleton { display: block; border-radius: var(--radius-sm); background-color: var(--color-bg-subtle); background-image: linear-gradient(100deg, transparent 30%, color-mix(in srgb, var(--color-surface-raised) 70%, transparent) 50%, transparent 70%); background-size: 200% 100%; animation: shimmer 1.4s linear infinite; color: transparent !important; user-select: none; }
.skeleton--text { height: 0.8em; margin-block: 0.35em; }
.skeleton--media { aspect-ratio: 4 / 3; border-radius: 0; }
@keyframes shimmer { from { background-position: 150% 0; } to { background-position: -50% 0; } }

.progress { height: 10px; background: repeating-linear-gradient(90deg, var(--color-border-strong) 0 var(--rib-w), transparent var(--rib-w) calc(var(--rib-w) + var(--rib-gap))); position: relative; overflow: hidden; }
.progress__bar { position: absolute; inset: 0; width: var(--progress, 0%); background: repeating-linear-gradient(90deg, var(--color-primary) 0 var(--rib-w), var(--color-bg) var(--rib-w) calc(var(--rib-w) + var(--rib-gap))); transition: width var(--dur-slow) var(--ease-out); }

/* 13 ── Generator workspace ────────────────────────────────────────────── */
/* Phone:   viewport pinned on top, parameters in a draggable bottom sheet.
   Desktop: viewport left, parameter panel right (fixed width).              */
.workspace { --sheet-peek: 5.5rem; position: relative; height: calc(100dvh - var(--nav-h)); min-height: 30rem; overflow: hidden; background: var(--color-viewport-bg); }
.workspace__viewport { position: absolute; inset: 0 0 var(--sheet-peek) 0; overflow: hidden;
  background-color: var(--color-viewport-bg);
  background-image: linear-gradient(var(--color-viewport-grid) 1px, transparent 1px), linear-gradient(90deg, var(--color-viewport-grid) 1px, transparent 1px);
  background-size: 32px 32px; background-position: center; }
.workspace__viewport canvas, .workspace__viewport > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }
.workspace__bar { position: absolute; z-index: 2; top: var(--space-3); left: var(--space-3); right: var(--space-3); display: flex; justify-content: space-between; align-items: flex-start; gap: var(--space-2); pointer-events: none; }
.workspace__bar > * { pointer-events: auto; }
.workspace__hud { position: absolute; z-index: 2; left: var(--space-3); bottom: var(--space-3); display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-3); font-family: var(--font-mono); font-size: var(--text-overline); font-weight: var(--weight-medium); color: var(--color-text-muted); font-variant-numeric: tabular-nums; }
.workspace__hud b { color: var(--color-text); font-weight: var(--weight-semibold); }
.toolbar { display: inline-flex; padding: 3px; gap: 2px; background: color-mix(in srgb, var(--color-surface) 88%, transparent); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); border: var(--border-w) solid var(--color-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.toolbar .btn { border-radius: var(--radius-md); }
.toolbar .btn[aria-pressed="true"] { --btn-bg: var(--color-surface-inverse); --btn-fg: var(--color-text-inverse); }

.workspace__panel { position: absolute; z-index: var(--z-sheet); left: 0; right: 0; bottom: 0; height: var(--sheet-h, 52%); max-height: calc(100% - var(--space-6)); display: flex; flex-direction: column; background: var(--color-surface); border-top: var(--border-w) solid var(--color-border); border-radius: var(--radius-xl) var(--radius-xl) 0 0; box-shadow: var(--shadow-sheet); transition: height var(--dur-slow) var(--ease-sheet); }
.workspace__panel[data-snap="peek"] { --sheet-h: var(--sheet-peek); }
.workspace__panel[data-snap="half"] { --sheet-h: 52%; }
.workspace__panel[data-snap="full"] { --sheet-h: 100%; }
.workspace__panel[data-dragging="true"] { transition: none; }
.sheet__handle { flex: none; display: grid; place-items: center; width: 100%; height: 1.75rem; padding: 0; background: none; border: 0; cursor: grab; touch-action: none; }
.sheet__handle::before { content: ""; width: 40px; height: 4px; border-radius: 2px; background: var(--color-border-control); }
.sheet__handle:active { cursor: grabbing; }
.panel__head { flex: none; display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding: 0 var(--space-4) var(--space-3); }
.panel__body { flex: 1; overflow-y: auto; overscroll-behavior: contain; padding: 0 var(--space-4) var(--space-4); display: flex; flex-direction: column; gap: var(--space-5); }
.panel__group { display: flex; flex-direction: column; gap: var(--space-3); padding-top: var(--space-4); border-top: var(--border-w) solid var(--color-border); }
.panel__group:first-child { border-top: 0; padding-top: 0; }
.panel__foot { flex: none; display: grid; grid-template-columns: 1fr auto; gap: var(--space-3); align-items: center; padding: var(--space-3) var(--space-4) calc(var(--space-3) + env(safe-area-inset-bottom)); border-top: var(--border-w) solid var(--color-border); background: var(--color-surface); }
@media (min-width: 64rem) {
  .workspace { display: grid; grid-template-columns: minmax(0, 1fr) var(--panel-w); }
  .workspace__viewport { position: relative; inset: auto; }
  .workspace__bar, .workspace__hud { top: var(--space-4); left: var(--space-4); right: var(--space-4); }
  .workspace__hud { top: auto; bottom: var(--space-4); font-size: var(--text-caption); }
  .workspace__panel, .workspace__panel[data-snap] { position: relative; height: auto; max-height: none; border-radius: 0; border-top: 0; border-left: var(--border-w) solid var(--color-border); box-shadow: none; min-height: 0; }
  .sheet__handle { display: none; }
  .panel__head { padding: var(--space-4) var(--space-5) var(--space-3); }
  .panel__body { padding: 0 var(--space-5) var(--space-5); }
  .panel__foot { padding: var(--space-4) var(--space-5); }
}

/* 14 ── Assistant ──────────────────────────────────────────────────────── */
/* Teal ("coolant") marks everything the assistant says or does. */
.assistant { display: flex; flex-direction: column; background: var(--color-surface); border: var(--border-w) solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; min-height: 24rem; }
.assistant--docked { position: fixed; z-index: var(--z-modal); inset: auto 0 0 0; height: 86dvh; border-radius: var(--radius-xl) var(--radius-xl) 0 0; box-shadow: var(--shadow-lg); transform: translateY(105%); transition: transform var(--dur-slow) var(--ease-sheet); }
.assistant--docked[data-open="true"] { transform: none; }
@media (min-width: 48rem) { .assistant--docked { inset: auto var(--space-5) var(--space-5) auto; width: var(--assistant-w); height: min(40rem, calc(100dvh - var(--nav-h) - var(--space-7))); border-radius: var(--radius-xl); } }
.assistant__head { flex: none; display: flex; align-items: center; gap: var(--space-3); padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4); border-bottom: var(--border-w) solid var(--color-border); }
.assistant__glyph { flex: none; width: 2rem; height: 2rem; display: grid; place-items: center; background: var(--color-accent-soft); color: var(--color-on-accent-soft); border-radius: var(--radius-md); }
.assistant__log { flex: 1; overflow-y: auto; padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-4); overscroll-behavior: contain; }
.msg { max-width: 88%; font-size: var(--text-body-sm); line-height: var(--leading-body); }
.msg--user { align-self: flex-end; padding: var(--space-2) var(--space-3); background: var(--color-bg-subtle); border: var(--border-w) solid var(--color-border); border-radius: var(--radius-lg) var(--radius-lg) var(--radius-xs) var(--radius-lg); }
.msg--ai { align-self: flex-start; max-width: 100%; padding-left: var(--space-3); border-left: 2px solid var(--color-accent); display: grid; gap: var(--space-2); }
/* A tool call: what the assistant actually did to the site, in the open. */
.msg__tool { display: flex; align-items: center; gap: var(--space-2); padding: var(--space-2) var(--space-3); background: var(--color-surface-sunken); border: var(--border-w) solid var(--color-border); border-radius: var(--radius-md); font-family: var(--font-mono); font-size: var(--text-caption); font-weight: var(--weight-medium); color: var(--color-text-muted); overflow-wrap: anywhere; }
.msg__tool .icon { color: var(--color-accent-text); width: 1rem; height: 1rem; }
.msg__tool b { color: var(--color-text); font-weight: var(--weight-semibold); }
.msg__typing { display: inline-flex; gap: 3px; align-items: flex-end; height: 1rem; }
.msg__typing i { width: 3px; height: 100%; background: var(--color-accent); animation: typing 0.9s var(--ease-in-out) infinite; transform-origin: bottom; }
.msg__typing i:nth-child(2) { animation-delay: 0.12s; } .msg__typing i:nth-child(3) { animation-delay: 0.24s; } .msg__typing i:nth-child(4) { animation-delay: 0.36s; }
@keyframes typing { 0%, 100% { transform: scaleY(0.3); } 50% { transform: scaleY(1); } }
.assistant__suggest { flex: none; display: flex; gap: var(--space-2); padding: 0 var(--space-4) var(--space-3); overflow-x: auto; scrollbar-width: none; }
.assistant__suggest::-webkit-scrollbar { display: none; }
.assistant__composer { flex: none; display: flex; align-items: flex-end; gap: var(--space-2); padding: var(--space-3); border-top: var(--border-w) solid var(--color-border); padding-bottom: calc(var(--space-3) + env(safe-area-inset-bottom)); }
.assistant__composer .textarea { min-height: var(--control-h); height: var(--control-h); max-height: 8rem; padding-block: 0.6rem; line-height: 1.4; resize: none; overflow-y: auto; }
.assistant__composer .textarea::placeholder { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.assistant-fab { position: fixed; z-index: var(--z-sticky); right: var(--space-4); bottom: calc(var(--space-4) + env(safe-area-inset-bottom)); height: var(--control-h-lg); padding-inline: var(--space-4); display: inline-flex; align-items: center; gap: var(--space-2); background: var(--color-surface-inverse); color: var(--color-text-inverse); border: 0; border-radius: var(--radius-full); box-shadow: var(--shadow-lg); font-size: var(--text-body-sm); font-weight: var(--weight-semibold); }
.assistant-fab .icon { color: var(--color-accent-on-inverse); }
.assistant-fab--static { position: static; }

/* 15 ── Utilities ──────────────────────────────────────────────────────── */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: var(--space-3); top: -4rem; z-index: 999; padding: var(--space-2) var(--space-4); background: var(--color-surface-inverse); color: var(--color-text-inverse); border-radius: var(--radius-md); font-weight: var(--weight-semibold); }
.skip-link:focus { top: var(--space-3); }
.grow { flex: 1; min-width: 0; }
.center { text-align: center; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@media (max-width: 47.99rem) { .hide-mobile { display: none !important; } }
@media (min-width: 48rem) { .hide-desktop { display: none !important; } }

/* 16 ── Marketing blocks ───────────────────────────────────────────────── */
/* Hero and category cards sit on photography, so they always carry data-theme="dark" on the element. */
.hero { position: relative; isolation: isolate; display: grid; align-items: end; min-height: min(46rem, calc(100svh - var(--nav-h))); padding-block: var(--space-7) var(--space-6); background: var(--color-bg); color: var(--color-text); overflow: hidden; }
.hero__media { position: absolute; inset: 0; z-index: -2; width: 100%; height: 100%; object-fit: cover; object-position: 72% center; }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, var(--photo-scrim-mid) 0%, var(--photo-scrim-strong) 40%); }
.hero__content { display: grid; gap: var(--space-5); max-width: 40rem; }
/* Text over photography uses the full text colour only: it is the one colour that still
   clears 4.5:1 over a pure-white pixel under the scrim (see DESIGN.md › Accessibility). */
.hero .lead, .hero .overline { color: var(--color-text); }
.hero .overline { display: flex; align-items: center; gap: var(--space-3); }
.hero .overline::before { content: ""; flex: none; width: 23px; height: 12px; background: repeating-linear-gradient(90deg, var(--color-primary) 0 var(--rib-w), transparent var(--rib-w) calc(var(--rib-w) + var(--rib-gap))); }
.hero__spec { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3) var(--space-5); margin: 0; padding-top: var(--space-4); border-top: var(--border-w) solid var(--photo-rule); font-family: var(--font-mono); font-size: var(--text-caption); color: var(--color-text-muted); font-variant-numeric: tabular-nums; }
.hero__spec dd { margin: 0; }
.hero__spec b { display: block; color: var(--color-text); font-size: var(--text-body-sm); font-weight: var(--weight-semibold); }
@media (min-width: 48rem) { .hero__spec { display: flex; flex-wrap: wrap; } }
@media (min-width: 64rem) {
  .hero { align-items: center; padding-block: var(--space-8); }
  .hero::before { background: linear-gradient(90deg, var(--photo-scrim-strong) 0%, var(--photo-scrim-strong) 28%, var(--photo-scrim-mid) 55%, var(--photo-scrim-none) 85%); }
}
.category-card { position: relative; isolation: isolate; display: flex; align-items: flex-end; aspect-ratio: 4 / 3; padding: var(--space-4); border-radius: var(--radius-lg); overflow: hidden; color: var(--color-text); text-decoration: none; background: var(--color-surface); }
.category-card img { position: absolute; inset: 0; z-index: -2; width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-slow) var(--ease-out); }
.category-card::before { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, var(--photo-scrim-none) 35%, var(--photo-scrim-strong) 100%); }
.category-card:hover img { transform: scale(1.04); }
.category-card .overline { color: var(--color-text-muted); }
.stat__value { font-size: var(--text-h1); font-weight: var(--weight-black); font-stretch: var(--font-width-display); letter-spacing: var(--tracking-display); line-height: 1; font-variant-numeric: tabular-nums; }
.footer { padding-block: var(--space-6); border-top: var(--border-w) solid var(--color-border); font-size: var(--text-body-sm); color: var(--color-text-muted); }

/* ── Reduced motion: no travel, no loops. State changes become instant. ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
  .skeleton { background-image: none; }
  .card--interactive:hover, .btn:active { transform: none; }
  .design-card:hover .design-card__media img, .category-card:hover img { transform: none; }
}