/* INSTROFINE brand tokens — v1.3, final for build (2 October 2026). Source of truth: BRAND-SYSTEM.md. Older versions are in archive/.
   This file is the base of the site-wide brand stylesheet: tokens on :root, components inside .if-brand (on the Elementor page
   wrapper and the footer template, not <body>: the live header shares some if- class names).
   Opt-in: the component examples only apply inside .if-brand; nothing here targets WooCommerce or theme selectors.
   Fonts are NOT loaded here: self-host IBM Plex WOFF2 (see the @font-face example at the end). */
:root {
  /* ---- Colour: approved palette ---- */
  --if-graphite-900: #1D2226;   /* text, primary action, dark fields, footer */
  --if-steel-700: #4A535B;      /* secondary text, primary hover */
  --if-steel-600: #5C656D;      /* muted text, placeholder */
  --if-border-control: #7E878F; /* outlines of inputs, checkboxes, chips (3.65:1 on White) */
  --if-border-decorative: #D5D9DC; /* hairlines, card borders; never the only control boundary */
  --if-steel-100: #ECEEEF;      /* subtle/selected/disabled fill; muted text on Graphite */
  --if-paper: #F7F6F2;          /* alternate section ground, category tiles */
  --if-white: #FFFFFF;          /* page ground, product-photo ground, cards */
  --if-vermilion-500: #E4572E;  /* the Marker, focus ring, small graphic accents; never text */
  --if-vermilion-700: #A93A16;  /* short accent text on White/Paper only; never on Graphite (2.5:1) */
  /* ---- Colour: functional (status only; always with a word and an icon) ---- */
  --if-success-700: #1E6B45; --if-success-100: #E6F2EC;
  --if-warning-700: #8A5300; --if-warning-100: #FBF1DE;
  --if-error-700: #B3261E;   --if-error-100: #FBEAE8;
  --if-info-700: #1F5A8A;    --if-info-100: #E7EFF6;
  /* ---- Colour: semantic roles ---- */
  --if-text: var(--if-graphite-900);
  --if-text-secondary: var(--if-steel-700);
  --if-text-muted: var(--if-steel-600);
  --if-text-inverse: var(--if-white);
  --if-text-inverse-secondary: var(--if-border-decorative); /* 11.3:1 on Graphite */
  --if-text-inverse-muted: var(--if-steel-100);             /* 13.8:1 on Graphite */
  --if-surface: var(--if-white);
  --if-surface-alt: var(--if-paper);
  --if-surface-subtle: var(--if-steel-100);
  --if-surface-inverse: var(--if-graphite-900);
  --if-link: var(--if-graphite-900);
  --if-link-inverse: var(--if-white);
  --if-accent-label: var(--if-vermilion-700);
  --if-accent-label-inverse: var(--if-steel-100);
  --if-action-primary-bg: var(--if-graphite-900);
  --if-action-primary-fg: var(--if-white);
  --if-action-primary-bg-hover: var(--if-steel-700);
  --if-action-secondary-fg: var(--if-graphite-900);
  --if-action-secondary-border: var(--if-graphite-900);
  --if-action-secondary-bg-hover: var(--if-graphite-900);
  --if-action-secondary-fg-hover: var(--if-white);
  --if-action-disabled-bg: var(--if-steel-100);
  --if-action-disabled-fg: var(--if-steel-600);
  --if-action-disabled-border: var(--if-border-decorative);
  --if-control-bg: var(--if-white);
  --if-control-border: var(--if-border-control);
  --if-control-border-hover: var(--if-steel-700);
  --if-control-border-error: var(--if-error-700);
  --if-control-placeholder: var(--if-steel-600);
  --if-selected-border: var(--if-graphite-900);
  --if-selected-bg: var(--if-steel-100);
  --if-focus-ring: var(--if-vermilion-500);
  --if-mark: var(--if-vermilion-500);

  /* ---- Type ---- */
  --if-font-sans: "IBM Plex Sans", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --if-font-mono: "IBM Plex Mono", Consolas, "Roboto Mono", Menlo, monospace;
  --if-fs-display-xl: clamp(40px, 17.14px + 2.976vw, 60px); --if-lh-display-xl: calc(var(--if-fs-display-xl) + 4px);              /* 60/64 → 40/44 → 34/38 */
  --if-fs-display: clamp(34px, 18px + 2.083vw, 48px);        --if-lh-display: calc(var(--if-fs-display) * 1.142857 + 1.143px);   /* 48/56 → 34/40 */
  --if-fs-h1: 28px; --if-lh-h1: 34px;   /* 36/44 from 768 px */
  --if-fs-h2: 22px; --if-lh-h2: 28px;   /* 28/36 from 768 px */
  --if-fs-h3: 19px; --if-lh-h3: 26px;   /* 22/30 from 768 px */
  --if-fs-lede: 17px; --if-lh-lede: 26px; /* 18/28 from 768 px */
  --if-fs-body: 16px; --if-lh-body: 26px;
  --if-fs-detail: 14px; --if-lh-detail: 22px;
  --if-fs-label: 16px; --if-lh-label: 22px;
  --if-fs-label-sm: 12px; --if-lh-label-sm: 16px;
  --if-track-display: -0.02em; --if-track-h1: -0.01em; --if-track-caps: 0.06em;

  /* ---- Space and layout ---- */
  --if-space-1: 4px; --if-space-2: 8px; --if-space-3: 12px; --if-space-4: 16px; --if-space-5: 24px;
  --if-space-6: 32px; --if-space-7: 48px; --if-space-8: 64px; --if-space-9: 96px; --if-space-10: 128px;
  --if-container: 1200px;
  --if-gutter: 20px;      /* 24 from 768, 32 from 1024 */
  --if-grid-gap: 12px;    /* 16 from 768, 24 from 1024 */
  --if-section-y: 64px;   /* 80 from 768, 96 from 1024 */
  --if-block-gap: 24px;   /* heading block → content; 32 from 768 */
  --if-measure: 70ch;
  /* Breakpoints (for reference; CSS variables can't be used in media queries): 360, 768, 1024, 1200, 1440 */

  /* ---- Shape, lines, depth ---- */
  --if-radius: 2px;       /* things that hold content: cards, tiles, images, inputs, tables, notices, tags */
  --if-radius-pill: 999px;/* things you press: buttons, search, chips, pagination, steppers */
  --if-line: 1px solid var(--if-border-decorative);
  --if-shadow-float: 0 8px 24px rgba(29, 34, 38, .12); /* floating layers only */
  --if-scrim: rgba(29, 34, 38, .48);
  --if-focus-width: 2px; --if-focus-offset: 3px;
  --if-tap: 44px;
  --if-marker: 8px;

  /* ---- Fixed sizes (v1.2) ---- */
  --if-header-h: 64px;        /* 72 from 1024 */
  --if-logo-w: 180px;         /* 150 below 360 and in the logo strip */
  --if-thumb: 64px;           /* gallery thumbnails; 72 from 768 */
  --if-cart-img: 72px;        /* cart line image; 96 from 768 */
  --if-drawer-w: 400px;
  --if-dialog-w: 560px;
  --if-z-header: 100; --if-z-drawer: 200; --if-z-dialog: 300; --if-z-toast: 400;

  /* ---- Motion ---- */
  --if-dur-fast: 120ms; --if-dur-base: 200ms; --if-dur-slow: 300ms;
  --if-ease: cubic-bezier(.2, 0, 0, 1);
}
@media (min-width: 768px) {
  :root {
    --if-fs-h1: 36px; --if-lh-h1: 44px; --if-fs-h2: 28px; --if-lh-h2: 36px; --if-fs-h3: 22px; --if-lh-h3: 30px;
    --if-fs-lede: 18px; --if-lh-lede: 28px;
    --if-gutter: 24px; --if-grid-gap: 16px; --if-section-y: 80px; --if-block-gap: 32px;
  }
}
@media (min-width: 768px) {
  :root { --if-thumb: 72px; --if-cart-img: 96px; }
}
@media (min-width: 1024px) {
  :root { --if-gutter: 32px; --if-grid-gap: 24px; --if-section-y: 96px; --if-header-h: 72px; }
}
@media (max-width: 359px) {
  :root { --if-logo-w: 150px; }
}
@media (max-width: 359px) {
  :root { --if-fs-display-xl: 34px; }
}

/* ===== Opt-in component examples (.if-brand) ===== */
.if-brand { color: var(--if-text); background: var(--if-surface); font: 400 var(--if-fs-body)/var(--if-lh-body) var(--if-font-sans); }
.if-brand .if-display-xl { font: 600 var(--if-fs-display-xl)/var(--if-lh-display-xl) var(--if-font-sans); letter-spacing: var(--if-track-display); }
.if-brand .if-display    { font: 600 var(--if-fs-display)/var(--if-lh-display) var(--if-font-sans); letter-spacing: var(--if-track-display); }
.if-brand .if-h1, .if-brand .if-title { font: 600 var(--if-fs-h1)/var(--if-lh-h1) var(--if-font-sans); letter-spacing: var(--if-track-h1); } /* .if-title = v1.0 name */
.if-brand .if-h2, .if-brand .if-section { font: 600 var(--if-fs-h2)/var(--if-lh-h2) var(--if-font-sans); }                                  /* .if-section = v1.0 name */
.if-brand .if-h3, .if-brand .if-product-title { font: 600 var(--if-fs-h3)/var(--if-lh-h3) var(--if-font-sans); }                            /* v1.0 name; product page title is now .if-h2 */
.if-brand .if-lede { font: 400 var(--if-fs-lede)/var(--if-lh-lede) var(--if-font-sans); max-width: 60ch; }
.if-brand .if-body { max-width: var(--if-measure); }
.if-brand .if-detail { font: 400 var(--if-fs-detail)/var(--if-lh-detail) var(--if-font-sans); color: var(--if-text-muted); }
.if-brand .if-label { font: 500 var(--if-fs-label-sm)/var(--if-lh-label-sm) var(--if-font-sans); letter-spacing: var(--if-track-caps); text-transform: uppercase; color: var(--if-text-muted); }
.if-brand .if-eyebrow { display: inline-flex; align-items: center; gap: 8px; font: 500 var(--if-fs-label-sm)/var(--if-lh-label-sm) var(--if-font-sans); letter-spacing: var(--if-track-caps); text-transform: uppercase; color: var(--if-accent-label); }
.if-brand .if-eyebrow::before { content: ""; width: var(--if-marker); height: var(--if-marker); background: var(--if-mark); flex: none; } /* the Marker */
.if-brand .if-price { font: 600 16px/22px var(--if-font-sans); font-variant-numeric: tabular-nums; }
.if-brand .if-price--lg { font-size: 24px; line-height: 32px; }
.if-brand .if-price del { margin-left: 8px; font-weight: 400; color: var(--if-text-muted); }
/* Codes: Plex Mono's default zero is dotted — do NOT enable ss04 on Mono (it removes the dot). */
.if-brand .if-ref { font: 500 14px/22px var(--if-font-mono); }
.if-brand .if-ref--sm { font-size: 12px; line-height: 16px; color: var(--if-text-muted); }
/* If a code must be set in Plex Sans, ss04 gives Sans a dotted zero matching Mono. */
.if-brand .if-ref-sans { font-feature-settings: "ss04" 1; }
.if-brand .if-numeric { font-variant-numeric: tabular-nums; }
.if-brand .if-link { color: var(--if-link); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: .18em; transition: text-decoration-thickness var(--if-dur-fast) var(--if-ease); }
.if-brand .if-link:hover { text-decoration-thickness: 2px; }

/* Buttons: pill = you can press it. Medium 48 is the default; --lg 56 (hero, Add to cart); --sm 44 (header, filters). */
.if-brand .if-button { display: inline-flex; justify-content: center; align-items: center; gap: 8px; min-height: 48px; padding: 0 24px; box-sizing: border-box;
  border: 1px solid var(--if-action-primary-bg); border-radius: var(--if-radius-pill); background: var(--if-action-primary-bg); color: var(--if-action-primary-fg);
  font: 500 var(--if-fs-label)/var(--if-lh-label) var(--if-font-sans); text-decoration: none; cursor: pointer;
  transition: background-color var(--if-dur-fast) var(--if-ease), border-color var(--if-dur-fast) var(--if-ease), color var(--if-dur-fast) var(--if-ease); }
.if-brand .if-button--lg { min-height: 56px; padding: 0 32px; }
.if-brand .if-button--sm { min-height: 44px; padding: 0 16px; }
.if-brand .if-button:hover:not(:disabled) { background: var(--if-action-primary-bg-hover); border-color: var(--if-action-primary-bg-hover); }
.if-brand .if-button--secondary { background: transparent; color: var(--if-action-secondary-fg); border-color: var(--if-action-secondary-border); }
.if-brand .if-button--secondary:hover:not(:disabled) { background: var(--if-action-secondary-bg-hover); border-color: var(--if-action-secondary-border); color: var(--if-action-secondary-fg-hover); }
.if-brand .if-button:disabled { background: var(--if-action-disabled-bg); color: var(--if-action-disabled-fg); border-color: var(--if-action-disabled-border); cursor: not-allowed; }
.if-brand .if-icon-button { display: inline-grid; place-items: center; width: var(--if-tap); height: var(--if-tap); border: 0; border-radius: 50%; background: transparent; color: var(--if-text); cursor: pointer; }

/* Fields: 2 px corners = it holds content. Search is the pill exception (owner preference). */
.if-brand .if-field-label { display: block; margin-bottom: 8px; font: 500 var(--if-fs-label)/var(--if-lh-label) var(--if-font-sans); }
.if-brand .if-input { width: 100%; min-height: 48px; box-sizing: border-box; padding: 12px 16px; color: var(--if-graphite-900); background: var(--if-control-bg);
  border: 1px solid var(--if-control-border); border-radius: var(--if-radius); font: 400 var(--if-fs-body)/22px var(--if-font-sans); }
.if-brand .if-input:hover { border-color: var(--if-control-border-hover); }
.if-brand .if-input::placeholder { color: var(--if-control-placeholder); opacity: 1; }
.if-brand .if-input[aria-invalid="true"] { border: 2px solid var(--if-control-border-error); padding: 11px 15px; } /* pair with "Error: …" text and an icon */
.if-brand .if-search { border-radius: var(--if-radius-pill); padding-left: 44px; }
.if-brand .if-help { margin-top: 8px; font: 400 var(--if-fs-detail)/var(--if-lh-detail) var(--if-font-sans); color: var(--if-text-muted); }
.if-brand .if-field { display: grid; max-width: 420px; }
.if-brand .if-field-error { display: flex; gap: 8px; align-items: flex-start; margin-top: 8px; font: 400 var(--if-fs-detail)/var(--if-lh-detail) var(--if-font-sans); color: var(--if-error-700); }
.if-brand .if-search-wrap { position: relative; }
.if-brand .if-search-wrap .if-ico { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: var(--if-steel-600); pointer-events: none; }

/* Chips (press) and status tags (hold content). */
.if-brand .if-chip { display: inline-flex; align-items: center; gap: 6px; min-height: 40px; padding: 0 16px; border: 1px solid var(--if-control-border); border-radius: var(--if-radius-pill);
  background: var(--if-surface); color: var(--if-text); font: 500 14px/20px var(--if-font-sans); cursor: pointer; }
.if-brand .if-chip--size { font: 500 13px/20px var(--if-font-mono); }
.if-brand .if-chip[aria-pressed="true"], .if-brand .if-chip[aria-checked="true"] { border: 2px solid var(--if-selected-border); background: var(--if-selected-bg); padding: 0 15px; color: var(--if-graphite-900); } /* add a check icon */
.if-brand .if-chip[aria-disabled="true"] { color: var(--if-steel-600); text-decoration: line-through; }
.if-brand .if-tag { display: inline-flex; align-items: center; padding: 4px 8px; border-radius: var(--if-radius); font: 500 var(--if-fs-label-sm)/var(--if-lh-label-sm) var(--if-font-sans); letter-spacing: var(--if-track-caps); text-transform: uppercase; }
.if-brand .if-tag--in-stock { color: var(--if-success-700); background: var(--if-success-100); }
.if-brand .if-tag--low-stock { color: var(--if-warning-700); background: var(--if-warning-100); }
.if-brand .if-tag--out-of-stock { color: var(--if-steel-700); background: var(--if-steel-100); }

/* Cards: one link each; equal heights in a row. */
.if-brand .if-tile, .if-brand .if-card { display: flex; flex-direction: column; height: 100%; box-sizing: border-box; border: var(--if-line); border-radius: var(--if-radius);
  color: var(--if-text); text-decoration: none; transition: border-color var(--if-dur-fast) var(--if-ease); }
.if-brand .if-tile { padding: 12px 12px 16px; background: var(--if-paper); }
.if-brand .if-card { padding: 16px; background: var(--if-white); }
.if-brand .if-tile__media { aspect-ratio: 4 / 3; } .if-brand .if-card__media { aspect-ratio: 1 / 1; }
.if-brand .if-tile__media img, .if-brand .if-card__media img { width: 100%; height: 100%; object-fit: contain; }
.if-brand .if-tile__media img { mix-blend-mode: multiply; } /* white photo ground blends into Paper */
.if-brand .if-tile:hover, .if-brand .if-card:hover { border-color: var(--if-graphite-900); }
.if-brand .if-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--if-grid-gap); margin: 0; padding: 0; list-style: none; }
.if-brand .if-tile__name, .if-brand .if-card__name { margin-top: 12px; font: 500 var(--if-fs-label)/var(--if-lh-label) var(--if-font-sans); text-underline-offset: 4px; }
.if-brand .if-card__name { flex: 1 0 auto; }
.if-brand .if-tile__count { margin-top: 4px; font: 400 var(--if-fs-detail)/var(--if-lh-detail) var(--if-font-sans); color: var(--if-steel-600); }
.if-brand .if-card .if-eyebrow { margin-top: 12px; } .if-brand .if-card .if-eyebrow + .if-card__name { margin-top: 4px; }
.if-brand .if-card .if-ref--sm { margin-top: 4px; } .if-brand .if-card .if-price { margin-top: 8px; }
.if-brand .if-tile:hover .if-tile__name, .if-brand .if-card:hover .if-card__name { text-decoration: underline; }
.if-brand .if-head { margin-bottom: var(--if-block-gap); }
.if-brand .if-head--center { text-align: center; } .if-brand .if-head--center .if-lede { margin-left: auto; margin-right: auto; }
.if-brand .if-head--split { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: var(--if-space-5); }
.if-brand .if-head .if-eyebrow { margin-bottom: 12px; } .if-brand .if-head .if-lede { margin-top: 12px; }
.if-brand .if-strip { display: flex; align-items: center; height: 44px; overflow: hidden; border-bottom: var(--if-line); background: var(--if-white); }
.if-brand .if-strip img { width: 150px; height: auto; margin: 0 28px; flex: none; }
.if-brand .if-inverse .if-card:hover { border-color: var(--if-border-decorative); outline: 1px solid var(--if-white); outline-offset: 3px; }

/* Spec table, notices, accordion rows. */
.if-brand .if-spec { width: 100%; border-collapse: collapse; }
.if-brand .if-spec th, .if-brand .if-spec td { padding: 12px 0; border-bottom: var(--if-line); text-align: left; vertical-align: top; }
.if-brand .if-spec th { width: 40%; font: 400 var(--if-fs-detail)/var(--if-lh-detail) var(--if-font-sans); color: var(--if-text-secondary); }
.if-brand .if-notice { display: flex; gap: 12px; align-items: flex-start; border-left: 4px solid currentColor; border-radius: 0; padding: 12px 16px; font: 400 var(--if-fs-body)/var(--if-lh-body) var(--if-font-sans); } /* always start with a word: Success / Warning / Error / Info */
.if-brand .if-notice > :not(.if-ico) { margin: 0; color: var(--if-graphite-900); }
.if-brand .if-notice .if-ico { margin-top: 3px; } /* the icon keeps the status colour */
.if-brand .if-notice--success { color: var(--if-success-700); background: var(--if-success-100); }
.if-brand .if-notice--warning { color: var(--if-warning-700); background: var(--if-warning-100); }
.if-brand .if-notice--error { color: var(--if-error-700); background: var(--if-error-100); }
.if-brand .if-notice--info { color: var(--if-info-700); background: var(--if-info-100); }
.if-brand .if-accordion { border-top: var(--if-line); max-width: 760px; }
.if-brand .if-accordion details { border-bottom: var(--if-line); }
.if-brand .if-accordion summary { display: flex; justify-content: space-between; align-items: center; gap: var(--if-space-4); padding: 20px 0; list-style: none; cursor: pointer; font: 500 18px/28px var(--if-font-sans); color: var(--if-text); }
.if-brand .if-accordion summary::-webkit-details-marker { display: none; }
.if-brand .if-accordion .if-ico--minus, .if-brand .if-accordion details[open] .if-ico--plus { display: none; }
.if-brand .if-accordion details[open] .if-ico--minus { display: block; }
.if-brand .if-accordion__a { margin: 0 0 20px; max-width: var(--if-measure); color: var(--if-text-secondary); }


/* ===== v1.2 components ===== */
/* Layout helpers */
.if-brand .if-container { width: 100%; max-width: calc(var(--if-container) + 2 * var(--if-gutter)); margin: 0 auto; padding: 0 var(--if-gutter); box-sizing: border-box; }
.if-brand .if-band { padding: var(--if-section-y) 0; }            /* a page section (.if-section is the v1.0 name of Heading 2) */
.if-brand .if-band--alt { background: var(--if-surface-alt); }
.if-brand .if-ico { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.if-brand .if-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Select, checkbox, radio */
.if-brand .if-select { position: relative; }
.if-brand .if-select select { appearance: none; width: 100%; min-height: 48px; padding: 12px 44px 12px 16px; border: 1px solid var(--if-control-border); border-radius: var(--if-radius);
  background: var(--if-white); color: var(--if-graphite-900); font: 400 var(--if-fs-body)/22px var(--if-font-sans); cursor: pointer; }
.if-brand .if-select .if-ico { position: absolute; right: 14px; top: 14px; pointer-events: none; }
.if-brand .if-choice { display: flex; align-items: center; gap: 12px; min-height: var(--if-tap); cursor: pointer; font: 400 var(--if-fs-body)/var(--if-lh-body) var(--if-font-sans); }
.if-brand .if-choice input { appearance: none; width: 20px; height: 20px; margin: 0; flex: none; border: 1px solid var(--if-control-border); border-radius: var(--if-radius); background: var(--if-white); display: grid; place-items: center; cursor: pointer; }
.if-brand .if-choice input[type="radio"] { border-radius: 50%; }
.if-brand .if-choice input:checked { background: var(--if-graphite-900); border-color: var(--if-graphite-900); }
.if-brand .if-choice input[type="checkbox"]:checked::after { content: ""; width: 10px; height: 6px; border: 2px solid var(--if-white); border-top: 0; border-right: 0; transform: translateY(-1px) rotate(-45deg); }
.if-brand .if-choice input[type="radio"]:checked::after { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--if-white); }

/* Quantity stepper */
.if-brand .if-stepper { display: inline-flex; align-items: center; height: 48px; padding: 0 2px; border: 1px solid var(--if-control-border); border-radius: var(--if-radius-pill); background: var(--if-white); }
.if-brand .if-stepper button { display: grid; place-items: center; width: var(--if-tap); height: var(--if-tap); border: 0; border-radius: 50%; background: transparent; color: var(--if-graphite-900); cursor: pointer; }
.if-brand .if-stepper button:disabled { color: var(--if-steel-600); cursor: not-allowed; opacity: .6; }
.if-brand .if-stepper input { width: 48px; border: 0; background: transparent; text-align: center; color: var(--if-graphite-900); font: 500 var(--if-fs-label)/var(--if-lh-label) var(--if-font-sans); font-variant-numeric: tabular-nums; }

/* Header */
.if-brand .if-header { position: sticky; top: 0; z-index: var(--if-z-header); background: var(--if-white); border-bottom: var(--if-line); transition: box-shadow var(--if-dur-base) var(--if-ease); }
.if-brand .if-header.is-scrolled { box-shadow: var(--if-shadow-float); }
.if-brand .if-header__bar { display: flex; flex-wrap: wrap; align-items: center; column-gap: var(--if-space-4); min-height: var(--if-header-h); }
/* Below 1024: logo + menu/account/cart icons on the first row, the search pill full width on a second row, nav in the menu drawer. */
.if-brand .if-header__search { order: 3; flex: 1 0 100%; padding-bottom: var(--if-space-3); }
.if-brand .if-header__search .if-input { min-height: 44px; }
.if-brand .if-nav { display: none; }
@media (max-width: 359px) { .if-brand .if-header__account { display: none; } }
@media (min-width: 1024px) {
  .if-brand .if-header__bar { flex-wrap: nowrap; column-gap: var(--if-space-6); height: var(--if-header-h); }
  .if-brand .if-nav { display: flex; }
  .if-brand .if-header__search { order: 0; flex: 0 1 420px; min-width: 320px; margin-left: auto; padding: 0; }
  .if-brand .if-header__tools { margin-left: 0; }
  .if-brand .if-header__menu { display: none; }
}
.if-brand .if-header__logo img { display: block; width: var(--if-logo-w); height: auto; }
.if-brand .if-nav { gap: var(--if-space-6); margin: 0; padding: 0; list-style: none; }
.if-brand .if-nav a { position: relative; display: block; padding: 0 0 0 16px; color: var(--if-graphite-900); text-decoration: none; font: 500 var(--if-fs-label)/var(--if-lh-label) var(--if-font-sans); }
.if-brand .if-nav a:hover { text-decoration: underline; text-underline-offset: .18em; }
.if-brand .if-nav a[aria-current="page"]::before { content: ""; position: absolute; left: 0; top: 7px; width: var(--if-marker); height: var(--if-marker); background: var(--if-mark); } /* the Marker */
.if-brand .if-header__tools { display: flex; align-items: center; gap: var(--if-space-2); margin-left: auto; }
.if-brand .if-badge-count { position: absolute; top: 2px; right: 0; min-width: 20px; height: 20px; padding: 0 5px; border-radius: 10px; background: var(--if-graphite-900); color: var(--if-white);
  font: 500 12px/20px var(--if-font-sans); font-variant-numeric: tabular-nums; text-align: center; box-sizing: border-box; }
.if-brand .if-header .if-icon-button { position: relative; }

/* Footer (inside .if-inverse) */
.if-brand .if-footer { padding-top: 48px; padding-bottom: 24px; } /* top/bottom only: it shares the element with .if-container, whose side padding is the gutter */
.if-brand .if-footer__cols { display: grid; grid-template-columns: 1fr; gap: var(--if-space-6); margin-top: var(--if-space-6); }
.if-brand .if-footer h3 { margin: 0 0 var(--if-space-3); font: 600 var(--if-fs-h3)/var(--if-lh-h3) var(--if-font-sans); color: var(--if-text); }
.if-brand .if-footer ul { margin: 0; padding: 0; list-style: none; display: grid; gap: var(--if-space-2); }
.if-brand .if-footer a { color: var(--if-text-muted); text-decoration: none; font: 400 var(--if-fs-body)/var(--if-lh-body) var(--if-font-sans); }
.if-brand .if-footer a:hover, .if-brand .if-footer a:focus-visible { text-decoration: underline; text-underline-offset: .18em; }
.if-brand .if-footer__bottom { display: flex; flex-wrap: wrap; gap: var(--if-space-4); margin-top: var(--if-space-7); padding-top: var(--if-space-4); border-top: 1px solid var(--if-steel-700);
  font: 400 var(--if-fs-detail)/var(--if-lh-detail) var(--if-font-sans); color: var(--if-text-muted); }

/* Breadcrumbs, pagination */
.if-brand .if-crumbs { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; font: 400 var(--if-fs-detail)/var(--if-lh-detail) var(--if-font-sans); color: var(--if-steel-700); }
.if-brand .if-crumbs li + li::before { content: "/"; margin-right: 8px; color: var(--if-steel-600); }
.if-brand .if-crumbs a { color: var(--if-steel-700); }
.if-brand .if-crumbs [aria-current="page"] { color: var(--if-graphite-900); }
.if-brand .if-pages { display: flex; align-items: center; gap: var(--if-space-1); margin: 0; padding: 0; list-style: none; }
.if-brand .if-pages a, .if-brand .if-pages span { display: grid; place-items: center; width: var(--if-tap); height: var(--if-tap); border-radius: 50%; color: var(--if-graphite-900); text-decoration: none;
  font: 500 var(--if-fs-label)/var(--if-lh-label) var(--if-font-sans); font-variant-numeric: tabular-nums; }
.if-brand .if-pages a:hover { background: var(--if-steel-100); }
.if-brand .if-pages [aria-current="page"] { background: var(--if-graphite-900); color: var(--if-white); }

/* Product gallery and buy box */
.if-brand .if-gallery__main { aspect-ratio: 1 / 1; border: var(--if-line); border-radius: var(--if-radius); background: var(--if-white); overflow: hidden; }
.if-brand .if-gallery__main img { width: 100%; height: 100%; object-fit: contain; }
.if-brand .if-gallery__thumbs { display: flex; gap: var(--if-space-2); margin-top: var(--if-space-2); }
.if-brand .if-gallery__thumbs button { width: var(--if-thumb); height: var(--if-thumb); padding: 0; border: var(--if-line); border-radius: var(--if-radius); background: var(--if-white); overflow: hidden; cursor: pointer; }
.if-brand .if-gallery__thumbs button[aria-pressed="true"] { border: 2px solid var(--if-graphite-900); }
.if-brand .if-buybox { display: grid; gap: var(--if-space-4); align-content: start; }
.if-brand .if-buybox__title { margin: 0; font: 600 var(--if-fs-h2)/var(--if-lh-h2) var(--if-font-sans); }
.if-brand .if-buybox__row { display: flex; flex-wrap: wrap; align-items: center; gap: var(--if-space-3); }
.if-brand .if-facts { margin: 0; padding: 0; list-style: none; display: grid; gap: var(--if-space-2); }
.if-brand .if-facts li { display: flex; gap: 12px; align-items: baseline; }
.if-brand .if-facts li::before { content: ""; flex: none; width: var(--if-marker); height: var(--if-marker); background: var(--if-mark); transform: translateY(-1px); } /* Marker bullets */
.if-brand .if-info { display: flex; gap: 12px; align-items: flex-start; padding: var(--if-space-3) 0; border-top: var(--if-line); }
.if-brand .if-info strong { display: block; font: 500 var(--if-fs-label)/var(--if-lh-label) var(--if-font-sans); }
.if-brand .if-info span { font: 400 var(--if-fs-detail)/var(--if-lh-detail) var(--if-font-sans); color: var(--if-text-muted); }
@media (min-width: 1024px) {
  .if-brand .if-product { display: grid; grid-template-columns: 7fr 5fr; gap: var(--if-space-7); align-items: start; }
  .if-brand .if-buybox { position: sticky; top: 96px; }
}

/* Filters, active chips, toolbar */
.if-brand .if-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--if-space-4); }
.if-brand .if-filter-group { padding: var(--if-space-4) 0; border-bottom: var(--if-line); }
.if-brand .if-filter-group h3 { margin: 0 0 var(--if-space-2); font: 500 var(--if-fs-label)/var(--if-lh-label) var(--if-font-sans); }
@media (min-width: 1024px) {
  .if-brand .if-listing { display: grid; grid-template-columns: 3fr 9fr; gap: var(--if-space-6); align-items: start; }
}

/* Cart */
.if-brand .if-line { display: grid; grid-template-columns: var(--if-cart-img) 1fr auto; gap: var(--if-space-4); padding: var(--if-space-5) 0; border-bottom: var(--if-line); align-items: start; }
.if-brand .if-line__img { width: var(--if-cart-img); height: var(--if-cart-img); border: var(--if-line); border-radius: var(--if-radius); background: var(--if-white); object-fit: contain; }
.if-brand .if-summary { padding: var(--if-space-5); border-radius: var(--if-radius); background: var(--if-paper); display: grid; gap: var(--if-space-3); }
.if-brand .if-summary__row { display: flex; justify-content: space-between; gap: var(--if-space-4); font-variant-numeric: tabular-nums; }
.if-brand .if-summary .if-button { width: 100%; }
@media (min-width: 1024px) {
  .if-brand .if-cart { display: grid; grid-template-columns: 8fr 4fr; gap: var(--if-space-6); align-items: start; }
  .if-brand .if-summary { position: sticky; top: 96px; }
}

/* Drawer, dialog, scrim, toast */
.if-brand .if-scrim { position: fixed; inset: 0; z-index: var(--if-z-drawer); background: var(--if-scrim); }
.if-brand .if-drawer { position: fixed; top: 0; bottom: 0; right: 0; z-index: calc(var(--if-z-drawer) + 1); width: min(var(--if-drawer-w), calc(100vw - 48px)); display: flex; flex-direction: column;
  background: var(--if-white); box-shadow: var(--if-shadow-float); transition: transform var(--if-dur-slow) var(--if-ease); }
.if-brand .if-drawer--left { right: auto; left: 0; }
.if-brand .if-drawer__head { display: flex; align-items: center; justify-content: space-between; gap: var(--if-space-4); padding: var(--if-space-3) var(--if-space-3) var(--if-space-3) var(--if-space-5); border-bottom: var(--if-line); }
.if-brand .if-drawer__head h2 { margin: 0; font: 600 var(--if-fs-h3)/var(--if-lh-h3) var(--if-font-sans); }
.if-brand .if-drawer__body { flex: 1; overflow: auto; padding: var(--if-space-5); }
.if-brand .if-drawer__foot { padding: var(--if-space-4) var(--if-space-5); border-top: var(--if-line); display: grid; gap: var(--if-space-2); }
.if-brand .if-dialog { position: fixed; z-index: var(--if-z-dialog); left: 50%; top: 50%; transform: translate(-50%, -50%); width: min(var(--if-dialog-w), calc(100vw - 32px)); padding: var(--if-space-6);
  border-radius: var(--if-radius); background: var(--if-white); box-shadow: var(--if-shadow-float); box-sizing: border-box; }
.if-brand .if-toast { position: fixed; z-index: var(--if-z-toast); left: 50%; bottom: 24px; transform: translateX(-50%); min-height: 48px; max-width: calc(100vw - 32px); display: flex; align-items: center; gap: var(--if-space-3);
  padding: var(--if-space-3) var(--if-space-5); border-radius: var(--if-radius); background: var(--if-graphite-900); color: var(--if-white); font: 400 var(--if-fs-body)/22px var(--if-font-sans); box-sizing: border-box; }

/* Empty and loading states */
.if-brand .if-empty { max-width: 480px; margin: 0 auto; text-align: center; display: grid; gap: var(--if-space-3); justify-items: center; }
.if-brand .if-empty h2 { margin: 0; font: 600 var(--if-fs-h3)/var(--if-lh-h3) var(--if-font-sans); }
.if-brand .if-skeleton { background: var(--if-steel-100); border-radius: var(--if-radius); }

/* Hero and the measurement line */
.if-brand .if-hero { background: var(--if-paper); }
.if-brand .if-hero__copy { display: grid; gap: var(--if-space-3); align-content: center; }
.if-brand .if-hero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--if-space-5); margin-top: var(--if-space-5); }
@media (min-width: 1024px) {
  .if-brand .if-hero__grid { display: grid; grid-template-columns: 5fr 7fr; gap: var(--if-space-6); min-height: 520px; align-items: center; }
}
.if-brand .if-measure { height: 9px; border-bottom: 1px solid var(--if-border-decorative);
  background: repeating-linear-gradient(to right, var(--if-border-decorative) 0 1px, transparent 1px 4px) bottom / 100% 4px no-repeat,
              repeating-linear-gradient(to right, var(--if-border-decorative) 0 1px, transparent 1px 16px) bottom / 100% 8px no-repeat; } /* ticks every 4 px, long tick every 16 px; decorative only */

/* Inverse (Graphite) sections. */
.if-brand .if-inverse {
  --if-text: var(--if-text-inverse); --if-text-secondary: var(--if-text-inverse-secondary); --if-text-muted: var(--if-text-inverse-muted);
  --if-link: var(--if-link-inverse); --if-surface: var(--if-surface-inverse); --if-accent-label: var(--if-accent-label-inverse);
  --if-action-primary-bg: var(--if-white); --if-action-primary-fg: var(--if-graphite-900); --if-action-primary-bg-hover: var(--if-steel-100);
  --if-action-secondary-fg: var(--if-white); --if-action-secondary-border: var(--if-white);
  --if-action-secondary-bg-hover: var(--if-white); --if-action-secondary-fg-hover: var(--if-graphite-900);
  color: var(--if-text); background: var(--if-surface);
}
.if-brand .if-inverse .if-card, .if-brand .if-inverse .if-input { color: var(--if-graphite-900); }

/* Focus: 2 px Vermilion, 3 px outside, on every ground. */
.if-brand :is(a, button, input, select, textarea, [tabindex]):focus-visible { outline: var(--if-focus-width) solid var(--if-focus-ring); outline-offset: var(--if-focus-offset); }
.if-brand :is(a, button, input, select, textarea, [tabindex]):focus:not(:focus-visible) { outline: none; }

@media (min-width: 768px) {
  .if-brand .if-cards { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (min-width: 768px) and (max-width: 1023px) {
  .if-brand .if-card { padding: 12px; }
}
@media (max-width: 767px) {
  .if-brand .if-card { padding: 8px 8px 12px; }
  .if-brand .if-tile { padding: 8px 8px 12px; }
}
@media (forced-colors: active) {
  .if-brand :is(a, button, input, select, textarea, [tabindex]):focus-visible { outline-color: Highlight; }
  .if-brand .if-button, .if-brand .if-input, .if-brand .if-chip { border-color: ButtonText; }
}
@media (min-width: 768px) {
  .if-brand .if-footer { padding-top: 64px; padding-bottom: 32px; }
  .if-brand .if-footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .if-brand .if-footer__cols { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (prefers-reduced-motion: reduce) { .if-brand * { transition: none !important; animation: none !important; } }
/* Example self-hosting (paths are placeholders; keep IBM's LICENSE.txt with the files):
@font-face { font-family: "IBM Plex Sans"; src: url(/fonts/IBMPlexSans-Regular.woff2) format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url(/fonts/IBMPlexSans-Medium.woff2) format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url(/fonts/IBMPlexSans-SemiBold.woff2) format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url(/fonts/IBMPlexMono-Medium.woff2) format("woff2"); font-weight: 500; font-display: swap; }
Source files: npm @ibm/plex-sans 1.1.0 (font v3.005), @ibm/plex-mono 2.5.0 (font v2.005), SIL OFL 1.1. */