Design state

:root {
  /* Surfaces: a warm near-white page, a card one step warmer, never pure white. */
  --background: #fdfcfb;
  --foreground: oklch(0.145 0 0);
  --card: #fefdfb;
  --card-foreground: oklch(0.145 0 0);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0.145 0 0);

  /* The action colour is near-black. Colour is kept for status. */
  --primary: #171717;
  --primary-foreground: oklch(0.985 0 0);
  --secondary: oklch(0.97 0 0);
  --secondary-foreground: oklch(0.205 0 0);
  --muted: oklch(0.97 0 0);
  --muted-foreground: oklch(0.556 0 0);
  --accent: oklch(0.97 0 0);
  --accent-foreground: oklch(0.205 0 0);
  --destructive: oklch(0.577 0.245 27.325);
  --border: oklch(0.922 0 0);
  --input: oklch(0.922 0 0);
  --ring: oklch(0.708 0 0);

  /* 10px at the 15px root; sm, md and xl are derived below. Pills use rounded-full. */
  --radius: 0.625rem;
}

.dark {
  --background: oklch(0.145 0 0);
  --foreground: oklch(0.985 0 0);
  --card: oklch(0.205 0 0);
  --card-foreground: oklch(0.985 0 0);
  --popover: oklch(0.205 0 0);
  --popover-foreground: oklch(0.985 0 0);
  --primary: oklch(0.922 0 0);
  --primary-foreground: oklch(0.205 0 0);
  --secondary: oklch(0.269 0 0);
  --secondary-foreground: oklch(0.985 0 0);
  --muted: oklch(0.269 0 0);
  --muted-foreground: oklch(0.708 0 0);
  --accent: oklch(0.269 0 0);
  --accent-foreground: oklch(0.985 0 0);
  --destructive: oklch(0.704 0.191 22.216);
  --border: oklch(1 0 0 / 10%);
  --input: oklch(1 0 0 / 15%);
  --ring: oklch(0.556 0 0);
}

@theme {
  /*
   * One face for every word of the interface. Inter is a free stand-in: a product
   * names its own face here and nowhere else. `font-mono` rides it too, so figures
   * and labels never switch face; only real code (`code`, `pre`, `kbd`) is monospace.
   */
  --font-sans:
    "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: var(--font-sans);

  /* Shadows on the paper are tinted with ink and carry no border with them; the
     toast, a saturated pill above everything, keeps a neutral one. */
  --shadow-card: 0 2px 14px -6px rgba(11, 17, 16, 0.1);
  --shadow-card-hover: 0 14px 36px -12px rgba(11, 17, 16, 0.2);
  --shadow-popover:
    0 16px 48px -12px rgba(15, 17, 16, 0.14),
    0 6px 16px -8px rgba(15, 17, 16, 0.08);
  --shadow-toast: 0 18px 34px rgba(0, 0, 0, 0.16);

  /* Two measures: `max-w-narrow` (720px) and `max-w-page` (1140px) at the 15px root. */
  --container-narrow: 48rem;
  --container-page: 76rem;
}

@theme inline {
  --color-background: var(--background);
  --color-foreground: var(--foreground);
  --color-card: var(--card);
  --color-card-foreground: var(--card-foreground);
  --color-popover: var(--popover);
  --color-popover-foreground: var(--popover-foreground);
  --color-primary: var(--primary);
  --color-primary-foreground: var(--primary-foreground);
  --color-secondary: var(--secondary);
  --color-secondary-foreground: var(--secondary-foreground);
  --color-muted: var(--muted);
  --color-muted-foreground: var(--muted-foreground);
  --color-accent: var(--accent);
  --color-accent-foreground: var(--accent-foreground);
  --color-destructive: var(--destructive);
  --color-border: var(--border);
  --color-input: var(--input);
  --color-ring: var(--ring);
  --color-status-success: var(--status-success);
  --color-status-success-bg: var(--status-success-bg);
  --color-status-success-solid: var(--status-success-solid);
  --color-status-success-tile: var(--status-success-tile);
  --color-status-warning: var(--status-warning);
  --color-status-warning-bg: var(--status-warning-bg);
  --color-status-warning-solid: var(--status-warning-solid);
  --color-status-warning-tile: var(--status-warning-tile);
  --color-status-danger: var(--status-danger);
  --color-status-danger-bg: var(--status-danger-bg);
  --color-status-danger-solid: var(--status-danger-solid);
  --color-status-danger-tile: var(--status-danger-tile);
  --color-status-info: var(--status-info);
  --color-status-info-bg: var(--status-info-bg);
  --color-status-info-solid: var(--status-info-solid);
  --color-status-info-tile: var(--status-info-tile);
  --radius-sm: calc(var(--radius) - 4px);
  --radius-md: calc(var(--radius) - 2px);
  --radius-lg: var(--radius);
  --radius-xl: calc(var(--radius) + 4px);
}

/*
 * Status colours come from one generator: a hue per status, and four fixed
 * lightness/chroma steps shared by every hue. Change a step and every status moves
 * together; add a status by adding a hue. Measured after clipping to sRGB: text on
 * fill is about 6:1 for all four hues, white on solid at least 8:1, white on tile
 * at least 3.3:1 (icons only, never text).
 */
:root {
  --tint-text: 0.4 0.12; /* text and dot */
  --tint-fill: 0.88 0.08; /* chip fill behind the text */
  --tint-solid: 0.4 0.12; /* a filled surface carrying white text: the toast */
  --tint-tile: 0.62 0.14; /* the icon tile on a solid surface */

  --hue-success: 163;
  --hue-warning: 70;
  --hue-danger: 34;
  --hue-info: 255;
}

.dark {
  /* About 7:1 text on fill. Solid and tile keep their light values. */
  --tint-text: 0.8 0.1;
  --tint-fill: 0.3 0.06;
}

:root,
.dark {
  --status-success: oklch(var(--tint-text) var(--hue-success));
  --status-success-bg: oklch(var(--tint-fill) var(--hue-success));
  --status-success-solid: oklch(var(--tint-solid) var(--hue-success));
  --status-success-tile: oklch(var(--tint-tile) var(--hue-success));
  --status-warning: oklch(var(--tint-text) var(--hue-warning));
  --status-warning-bg: oklch(var(--tint-fill) var(--hue-warning));
  --status-warning-solid: oklch(var(--tint-solid) var(--hue-warning));
  --status-warning-tile: oklch(var(--tint-tile) var(--hue-warning));
  --status-danger: oklch(var(--tint-text) var(--hue-danger));
  --status-danger-bg: oklch(var(--tint-fill) var(--hue-danger));
  --status-danger-solid: oklch(var(--tint-solid) var(--hue-danger));
  --status-danger-tile: oklch(var(--tint-tile) var(--hue-danger));
  --status-info: oklch(var(--tint-text) var(--hue-info));
  --status-info-bg: oklch(var(--tint-fill) var(--hue-info));
  --status-info-solid: oklch(var(--tint-solid) var(--hue-info));
  --status-info-tile: oklch(var(--tint-tile) var(--hue-info));
}

const BG_L = 0.88;
const BG_C = 0.08;
const FG_L = 0.4;
const FG_C = 0.12;
const softTint = (hue: number, bgC = BG_C, fgC = FG_C) => ({
  bg: `oklch(${BG_L} ${bgC} ${hue})`,
  fg: `oklch(${FG_L} ${fgC} ${hue})`,
});

<span className="inline-flex items-center gap-1.5 rounded-full bg-status-success-bg px-2.5 py-0.5 font-medium text-status-success text-xs">
  <span aria-hidden className="size-1.5 rounded-full bg-status-success" />
  Approved
</span>

@layer base {
  html {
    /* The one density knob: the app is rem-based, so this scales type, control
       heights and spacing together. */
    font-size: 15px;
    /* Reserve the scrollbar's width for good, so locking scroll under a dialog or
       a menu never shifts the page sideways. */
    scrollbar-gutter: stable;
  }

  body {
    @apply m-0 bg-background text-foreground antialiased;
  }

  * {
    @apply border-border outline-ring/50;
  }

  code,
  pre,
  kbd {
    font-family:
      ui-monospace, Menlo, Monaco, Consolas, "Courier New", monospace;
  }

  /* Preflight drops the hand cursor from buttons, and role-based controls never
     had it. Restore it on everything clickable. */
  button,
  summary,
  label[for],
  select,
  a[href],
  [role="button"],
  [role="link"],
  [role="tab"],
  [role="menuitem"],
  [role="menuitemradio"],
  [role="menuitemcheckbox"],
  [role="option"],
  [role="switch"],
  input[type="checkbox"],
  input[type="radio"],
  input[type="submit"],
  input[type="button"],
  input[type="reset"],
  input[type="file"] {
    @apply cursor-pointer;
  }

  /* Last, so it wins on equal specificity: a disabled control never looks clickable. */
  button:disabled,
  select:disabled,
  input:disabled,
  [aria-disabled="true"],
  [data-disabled] {
    @apply cursor-not-allowed;
  }
}

<span className="shrink-0 text-muted-foreground text-xs tabular-nums">{progress}%</span>

<div className="rounded-2xl bg-card shadow-card transition-shadow duration-300 hover:shadow-card-hover">

export const PAGE_CONTAINER = "mx-auto w-full max-w-page px-5 sm:px-8 lg:px-12";

const PER_ROW = 4;
const CARD_WIDTH_REM = 15;
const GAP_REM = 1.5; // gap-6

export const cardGridRowMaxWidth = `calc(${PER_ROW * CARD_WIDTH_REM + (PER_ROW - 1) * GAP_REM}rem + 1px)`;

export function CardGrid({ add, children }: { add?: ReactNode; children?: ReactNode }) {
  const tileCount = Children.count(children) + (add ? 1 : 0);
  const emptySlots = (PER_ROW - (tileCount % PER_ROW)) % PER_ROW;
  return (
    <div className="flex flex-wrap justify-start gap-6" style={{ maxWidth: cardGridRowMaxWidth }}>
      {children}
      {add}
      {Array.from({ length: emptySlots }).map((_, i) => (
        <div key={`ghost-${i}`} aria-hidden className="w-60 rounded-2xl bg-foreground/[0.02]" />
      ))}
    </div>
  );
}

const buttonVariants = cva(
  "inline-flex shrink-0 items-center justify-center gap-2 rounded-full text-sm font-medium whitespace-nowrap outline-none focus-visible:border-ring focus-visible:ring-[3px] focus-visible:ring-ring/50 disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4",
  {
    variants: {
      variant: {
        default: "bg-primary text-primary-foreground hover:bg-primary/90",
        destructive: "bg-destructive text-white hover:bg-destructive/90",
        outline: "border bg-background shadow-xs hover:bg-accent hover:text-accent-foreground",
        secondary: "bg-secondary text-secondary-foreground hover:bg-secondary/80",
        ghost: "hover:bg-accent hover:text-accent-foreground",
        link: "text-primary underline-offset-4 hover:underline",
      },
      size: {
        default: "h-9 px-4 py-2 has-[>svg]:px-3",
        xs: "h-6 gap-1 px-2 text-xs has-[>svg]:px-1.5 [&_svg:not([class*='size-'])]:size-3",
        sm: "h-8 gap-1.5 px-3 text-sm has-[>svg]:px-2.5",
        lg: "h-10 px-5 text-base has-[>svg]:px-4",
        icon: "size-9",
        "icon-xs": "size-6 [&_svg:not([class*='size-'])]:size-3",
        "icon-sm": "size-8",
        "icon-lg": "size-10",
      },
    },
    defaultVariants: { variant: "default", size: "default" },
  },
);

// list
"inline-flex h-9 w-fit items-center justify-center gap-2 text-muted-foreground"
// trigger
"inline-flex h-[calc(100%-1px)] flex-1 items-center justify-center gap-1.5 rounded-full border border-transparent bg-transparent px-2 py-1 font-medium text-muted-foreground text-sm transition-[color,background-color,box-shadow,border-color] duration-200 ease-out hover:text-foreground"
// active
"data-[state=active]:border-input data-[state=active]:bg-background data-[state=active]:font-semibold data-[state=active]:text-foreground data-[state=active]:shadow-sm"

function ActionRow({ actions }: { actions: DialogAction[] }) {
  return (
    <>
      {actions.map((action, i) => {
        const isLast = i === actions.length - 1;
        const isSubmit = (action.type ?? (isLast ? "submit" : "button")) === "submit";
        return (
          <Button
            key={i}
            type={isSubmit ? "submit" : "button"}
            variant={action.variant ?? (isLast ? "default" : "ghost")}
            disabled={action.disabled || action.pending}
            onClick={isSubmit ? undefined : action.onClick}
          >
            {action.pending ? (action.pendingLabel ?? action.label) : action.label}
          </Button>
        );
      })}
    </>
  );
}

<Sonner
  position="bottom-right"
  offset={{ right: 32, bottom: 32 }}
  mobileOffset={{ right: 16, bottom: 16, left: 16 }}
  style={{ "--width": "min(42rem, calc(100vw - 2rem))" } as CSSProperties}
  toastOptions={{
    classNames: {
      toast: "group !w-fit max-w-[calc(100vw-2rem)] !border-0 !bg-transparent !p-0 !shadow-none",
    },
  }}
/>

<div className="flex flex-col items-center justify-center rounded-3xl bg-foreground/[0.025] px-6 py-16 text-center">
  <span className="flex size-14 items-center justify-center rounded-2xl bg-primary/10 text-primary [&>svg]:size-7">
    {icon}
  </span>
  <h2 className="mt-5 font-semibold text-xl tracking-tight">{title}</h2>
  <p className="mt-2 max-w-md text-muted-foreground leading-relaxed">{description}</p>
  <div className="mt-6">{action}</div>
</div>

/*
 * Companion to `scrollbar-gutter: stable`. Modal overlays lock scroll with
 * react-remove-scroll, which adds a right margin the width of the scrollbar it
 * hides. The gutter already reserves that width, so the margin counts it twice and
 * the page jumps. Cancel it; the gutter alone keeps the layout still.
 */
body[data-scroll-locked] {
  /* biome-ignore lint/complexity/noImportantStyles: react-remove-scroll sets this margin with `!important`. */
  margin-right: 0 !important;
}

/*
 * Someone who asked the system for less motion gets near-instant animations and
 * transitions everywhere, not only on the entrances gated with `motion-safe:`.
 */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    /* biome-ignore-start lint/complexity/noImportantStyles: the reset must win over every utility and third-party style. */
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
    /* biome-ignore-end lint/complexity/noImportantStyles: end of the reduced-motion reset. */
  }
}