/*! Hardstock v1.2.0. A neo-brutalist design language for agent-native web apps.
 *  MIT licensed. Drop-in, zero dependency, no build step.
 *  Tokens: design/tokens.json  Themes: design/themes.json  Rules: design/rules.json
 *
 *  Usage:
 *    <link rel="stylesheet" href="hardstock.css">
 *    <link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap">
 *    <body data-hs-theme="paper-yellow">
 */

/* ---------------------------------------------------------------- tokens */

:root {
  /* palette */
  --hs-ink: #141111;
  --hs-canvas: #fffaef;
  --hs-surface-raised: #fff8e6;
  --hs-surface-high: #fffdf7;
  --hs-surface-plain: #ffffff;
  --hs-muted: #576574;
  --hs-accent: #ffd440;
  --hs-on-fill: #141111;

  /* categorical */
  --hs-yellow: #ffd440;
  --hs-pink: #fe7da8;
  --hs-lavender: #bbafe6;
  --hs-cyan: #27ccf3;
  --hs-orange: #f8a16f;
  --hs-lime: #a9d877;
  --hs-coral: #f97264;
  --hs-sage: #9dcaaa;

  /* tints */
  --hs-tint-yellow: #fff4a8;
  --hs-tint-cyan: #ddf7ff;
  --hs-tint-lime: #eaf6d9;
  --hs-tint-pink: #ffe4ee;

  /* semantic */
  --hs-success: var(--hs-lime);
  --hs-warning: var(--hs-yellow);
  --hs-danger: var(--hs-pink);
  --hs-info: var(--hs-cyan);

  /* type */
  --hs-font-display: "Space Grotesk", system-ui, sans-serif;
  --hs-font-mono: "Space Mono", ui-monospace, monospace;
  --hs-font-body: ui-sans-serif, system-ui, sans-serif;

  /* structure */
  --hs-border: 2px solid var(--hs-ink);
  --hs-border-thin: 1px solid var(--hs-ink);
  --hs-border-heavy: 4px solid var(--hs-ink);
  --hs-shadow-xs: 1px 1px 0 var(--hs-ink);
  --hs-shadow-sm: 2px 2px 0 var(--hs-ink);
  --hs-shadow-md: 4px 4px 0 var(--hs-ink);
  --hs-shadow-lg: 6px 6px 0 var(--hs-ink);

  /* space */
  --hs-1: 4px;
  --hs-2: 8px;
  --hs-3: 12px;
  --hs-4: 16px;
  --hs-6: 24px;
  --hs-8: 32px;
  --hs-12: 48px;
  --hs-16: 64px;
  --hs-container: 64rem;

  /* motion */
  --hs-ease: cubic-bezier(0.4, 0, 0.2, 1);
  --hs-dur: 0.15s;
  --hs-dur-fast: 0.1s;

  /* Translucent ink for overlays. Never a backdrop blur. */
  --hs-overlay: rgba(20, 17, 17, 0.4);
}

/* ---------------------------------------------------------------- themes */
/* A theme swaps canvas, ink, the surfaces, muted and accent. Nothing else moves.
   Every block restates every value rather than leaning on the :root defaults, so
   one block is a complete theme and a partial block cannot masquerade as one.
   tools/selftest.mjs asserts these stay in sync with design/themes.json. */

[data-hs-theme="paper-yellow"] {
  --hs-canvas: #fffaef;
  --hs-ink: #141111;
  --hs-surface-raised: #fff8e6;
  --hs-surface-high: #fffdf7;
  --hs-surface-plain: #ffffff;
  --hs-muted: #576574;
  --hs-accent: #ffd440;
}

[data-hs-theme="night-yellow"] {
  --hs-canvas: #14110b;
  --hs-ink: #fbf3e0;
  --hs-surface-raised: #211b10;
  --hs-surface-high: #2b2416;
  --hs-surface-plain: #211b10;
  --hs-muted: #a99e86;
  --hs-accent: #ffd440;
  /* Text on a colored fill stays dark, even here. */
  --hs-on-fill: #141111;
}

[data-hs-theme="paper-pink"] {
  --hs-canvas: #fff8f4;
  --hs-ink: #141111;
  --hs-surface-raised: #ffeef2;
  --hs-surface-high: #fffafb;
  --hs-surface-plain: #ffffff;
  --hs-muted: #576574;
  --hs-accent: #fe7da8;
}

[data-hs-theme="paper-orange"] {
  --hs-canvas: #fffaef;
  --hs-ink: #141111;
  --hs-surface-raised: #fff8e6;
  --hs-surface-high: #fffdf7;
  --hs-surface-plain: #ffffff;
  --hs-muted: #576574;
  --hs-accent: #f8a16f;
}

[data-hs-theme="paper-cyan"] {
  --hs-canvas: #fffaef;
  --hs-ink: #141111;
  --hs-surface-raised: #fff8e6;
  --hs-surface-high: #fffdf7;
  --hs-surface-plain: #ffffff;
  --hs-muted: #576574;
  --hs-accent: #27ccf3;
}

[data-hs-theme="paper-lime"] {
  --hs-canvas: #fffaef;
  --hs-ink: #141111;
  --hs-surface-raised: #fff8e6;
  --hs-surface-high: #fffdf7;
  --hs-surface-plain: #ffffff;
  --hs-muted: #576574;
  --hs-accent: #a9d877;
}

[data-hs-theme="cool-lavender"] {
  --hs-canvas: #f4f6fb;
  --hs-ink: #14131a;
  --hs-surface-raised: #ffffff;
  --hs-surface-high: #fbfcfe;
  --hs-surface-plain: #ffffff;
  --hs-muted: #576574;
  --hs-accent: #bbafe6;
}

/* ------------------------------------------------------------ base layer */
/* The six lines nobody remembers to port. Ship them before any component. */

*, *::before, *::after { box-sizing: border-box; margin: 0; border-radius: 0; }
/* Author display rules outrank the UA sheet, so a component that sets display
   would otherwise render while still marked hidden. */
[hidden] { display: none !important; }
html, body { height: 100%; }

body {
  background: var(--hs-canvas);
  color: var(--hs-ink);
  font-family: var(--hs-font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--hs-accent); color: var(--hs-on-fill); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--hs-canvas); }
::-webkit-scrollbar-thumb { background: var(--hs-ink); }

:focus-visible { outline: 2px solid var(--hs-ink); outline-offset: 2px; }

a { color: var(--hs-ink); text-underline-offset: 2px; }

h1, h2, h3, h4 { font-family: var(--hs-font-display); font-weight: 700; }
h1 { font-size: 48px; line-height: 1; }
h2 { font-size: 30px; line-height: 1.2; }
h3 { font-size: 20px; line-height: 1.4; }
mark { background: var(--hs-accent); color: var(--hs-on-fill); padding: 0 6px; }

img, svg, video { max-width: 100%; }
svg { stroke-linecap: round; stroke-linejoin: round; }

@keyframes hs-float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
@keyframes hs-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.55; } }

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

/* ------------------------------------------------------------- utilities */

.hs-container { max-width: var(--hs-container); margin: 0 auto; padding: 0 var(--hs-6); }
.hs-display { font-family: var(--hs-font-display); }
.hs-mono { font-family: var(--hs-font-mono); }
.hs-muted { color: var(--hs-muted); }
.hs-label {
  font-family: var(--hs-font-mono); font-size: 10px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em; line-height: 1;
}
.hs-rule { border: 0; border-top: var(--hs-border); }
.hs-block { padding: var(--hs-12) 0; }
.hs-stack { display: flex; flex-direction: column; gap: var(--hs-4); }
.hs-row { display: flex; align-items: center; gap: var(--hs-3); }

/* --------------------------------------------------------------- button */

.hs-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--hs-2);
  font-family: var(--hs-font-display); font-size: 14px; font-weight: 700;
  padding: var(--hs-3) var(--hs-6);
  background: var(--hs-surface-plain); color: var(--hs-ink);
  border: var(--hs-border); box-shadow: var(--hs-shadow-sm);
  cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: transform var(--hs-dur-fast) var(--hs-ease), box-shadow var(--hs-dur-fast) var(--hs-ease);
}
.hs-btn:hover { transform: translate(2px, 2px); box-shadow: var(--hs-shadow-xs); }
.hs-btn:active { transform: translate(2px, 2px); box-shadow: none; }
.hs-btn[disabled], .hs-btn.is-disabled {
  opacity: 0.5; cursor: not-allowed; box-shadow: none; transform: none;
}
/* Only the colored fills take on-fill. A neutral surface takes ink, otherwise a
   dark theme paints dark text on a dark button. */
.hs-btn--primary { background: var(--hs-accent); color: var(--hs-on-fill); }
.hs-btn--danger { background: var(--hs-danger); color: var(--hs-on-fill); }
.hs-btn--ghost { background: transparent; box-shadow: none; }
.hs-btn--ghost:hover, .hs-btn--ghost:active { box-shadow: none; }
.hs-btn--sm { font-size: 12px; padding: var(--hs-2) var(--hs-3); }

/* ----------------------------------------------------------------- card */

.hs-card {
  background: var(--hs-surface-high); color: var(--hs-ink);
  border: var(--hs-border); box-shadow: var(--hs-shadow-sm);
  padding: var(--hs-6);
}
.hs-card--raised { background: var(--hs-surface-raised); }
.hs-card--link { display: block; text-decoration: none;
  transition: transform var(--hs-dur-fast) var(--hs-ease), box-shadow var(--hs-dur-fast) var(--hs-ease); }
.hs-card--link:hover { transform: translate(-2px, -2px); box-shadow: var(--hs-shadow-md); }
.hs-card__title { font-family: var(--hs-font-display); font-size: 20px; font-weight: 700; }

/* ---------------------------------------------------------------- input */

.hs-field { display: flex; flex-direction: column; gap: var(--hs-2); }
.hs-field > label {
  font-family: var(--hs-font-mono); font-size: 10px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em;
}
.hs-input, .hs-select, textarea.hs-input {
  background: var(--hs-surface-plain); color: var(--hs-ink);
  border: var(--hs-border); padding: var(--hs-3) var(--hs-4);
  font-family: var(--hs-font-body); font-size: 15px; width: 100%;
}
.hs-input::placeholder { color: var(--hs-muted); }
.hs-input[aria-invalid="true"] { border-color: var(--hs-danger); }
.hs-field__error { font-family: var(--hs-font-mono); font-size: 11px; color: var(--hs-ink); }
/* Square chevron for select. Painted, not a pseudo-element, so it survives
   `appearance: none` on every engine. */
.hs-select {
  -webkit-appearance: none; appearance: none; cursor: pointer; padding-right: var(--hs-8);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23141111' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center;
}
[data-hs-theme="night-yellow"] .hs-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23fbf3e0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
}

/* Checkbox and radio are both squares. The checked mark is a painted square,
   again avoiding pseudo-elements on replaced elements. */
.hs-check {
  width: 18px; height: 18px; flex: 0 0 18px; -webkit-appearance: none; appearance: none; cursor: pointer;
  border: var(--hs-border); background-color: var(--hs-surface-plain);
  background-image: linear-gradient(var(--hs-on-fill), var(--hs-on-fill));
  background-repeat: no-repeat; background-position: center; background-size: 0 0;
}
.hs-check:checked { background-color: var(--hs-accent); background-size: 8px 8px; }

/* Rectangular track, square knob, no pill anywhere. */
.hs-toggle {
  width: 44px; height: 24px; flex: 0 0 44px; -webkit-appearance: none; appearance: none; cursor: pointer;
  border: var(--hs-border); background-color: var(--hs-surface-plain);
  background-image: linear-gradient(var(--hs-ink), var(--hs-ink));
  background-repeat: no-repeat; background-size: 16px 16px; background-position: 2px center;
  transition: background-position var(--hs-dur) var(--hs-ease),
              background-color var(--hs-dur) var(--hs-ease);
}
/* The knob takes its color from whatever it currently sits on: the neutral track
   when off, the success fill when on. Pinning it to either one makes it vanish in
   the other state under a dark theme. */
.hs-toggle:checked {
  background-color: var(--hs-success);
  background-image: linear-gradient(var(--hs-on-fill), var(--hs-on-fill));
  background-position: 22px center;
}

/* Windows high contrast strips background-image, which would erase the checked
   state of both controls. */
@media (forced-colors: active) {
  .hs-check:checked, .hs-toggle:checked { forced-color-adjust: none; outline: 2px solid CanvasText; }
}

/* ---------------------------------------------------------------- badge */

.hs-badge {
  display: inline-flex; align-items: center; gap: var(--hs-1);
  border: var(--hs-border); box-shadow: var(--hs-shadow-sm);
  background: var(--hs-surface-plain); color: var(--hs-ink);
  padding: var(--hs-1) var(--hs-2);
  font-family: var(--hs-font-mono); font-size: 10px; font-weight: 700;
  text-transform: uppercase; line-height: 1;
  white-space: nowrap; flex-shrink: 0;
}
.hs-badge--success { background: var(--hs-success); color: var(--hs-on-fill); }
.hs-badge--warning { background: var(--hs-warning); color: var(--hs-on-fill); }
.hs-badge--danger  { background: var(--hs-danger); color: var(--hs-on-fill); }
.hs-badge--info    { background: var(--hs-info); color: var(--hs-on-fill); }

/* --------------------------------------------------------------- avatar */

.hs-avatar {
  width: 40px; height: 40px; flex: 0 0 40px; overflow: hidden;
  border: var(--hs-border); box-shadow: var(--hs-shadow-sm);
  display: flex; align-items: center; justify-content: center;
  background: var(--hs-cyan); color: var(--hs-on-fill);
  font-family: var(--hs-font-display); font-weight: 700;
}
.hs-avatar--float { animation: hs-float 4s var(--hs-ease) infinite; }
.hs-avatar--sm { width: 32px; height: 32px; flex-basis: 32px; font-size: 13px; }

/* ------------------------------------------------------------------ nav */

.hs-nav-item {
  display: flex; align-items: center; gap: var(--hs-2);
  font-family: var(--hs-font-mono); font-size: 14px;
  padding: var(--hs-2) var(--hs-3); cursor: pointer;
  color: var(--hs-ink); text-decoration: none;
  border: 2px solid transparent;
  transition: background var(--hs-dur-fast) var(--hs-ease);
}
.hs-nav-item:hover { background: var(--hs-surface-high); }
.hs-nav-item.is-active {
  background: var(--hs-accent); color: var(--hs-on-fill);
  border: var(--hs-border); box-shadow: var(--hs-shadow-sm);
}

/* ---------------------------------------------------------------- table */

.hs-table { width: 100%; border-collapse: collapse; border: var(--hs-border); }
.hs-table th {
  background: var(--hs-surface-raised); text-align: left;
  font-family: var(--hs-font-mono); font-size: 11px; font-weight: 700; text-transform: uppercase;
  padding: var(--hs-3) var(--hs-4); border-bottom: var(--hs-border);
}
.hs-table td { padding: var(--hs-3) var(--hs-4); border-top: var(--hs-border-thin); }
.hs-table tbody tr:hover { background: var(--hs-surface-high); }

/* ----------------------------------------------------------------- tabs */

.hs-tabs { display: flex; }
.hs-tab {
  font-family: var(--hs-font-display); font-size: 14px; font-weight: 700;
  padding: var(--hs-2) var(--hs-4); background: var(--hs-surface-plain); color: var(--hs-ink);
  border: var(--hs-border); margin-right: -2px; cursor: pointer;
}
.hs-tab[aria-selected="true"] { background: var(--hs-accent); color: var(--hs-on-fill); box-shadow: var(--hs-shadow-sm); }

/* ---------------------------------------------------------------- modal */

.hs-overlay {
  position: fixed; inset: 0; background: var(--hs-overlay);
  display: grid; place-items: center; padding: var(--hs-6); z-index: 50;
}
.hs-modal {
  width: min(640px, 90vw); max-height: 80vh; overflow: auto;
  background: var(--hs-surface-plain); color: var(--hs-ink);
  border: var(--hs-border); box-shadow: var(--hs-shadow-lg);
}
.hs-modal__head {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--hs-lavender); color: var(--hs-on-fill);
  border-bottom: var(--hs-border); padding: var(--hs-3) var(--hs-4);
  font-family: var(--hs-font-display); font-weight: 700;
}
.hs-modal__body { padding: var(--hs-6); }

/* ---------------------------------------------------------- toast/tooltip */

.hs-toast {
  position: fixed; right: var(--hs-6); bottom: var(--hs-6); z-index: 60;
  display: flex; align-items: center; gap: var(--hs-3);
  background: var(--hs-info); color: var(--hs-on-fill);
  border: var(--hs-border); box-shadow: var(--hs-shadow-md);
  padding: var(--hs-3) var(--hs-4); font-size: 14px;
}
.hs-tooltip {
  background: var(--hs-ink); color: var(--hs-canvas);
  font-family: var(--hs-font-mono); font-size: 11px;
  padding: var(--hs-1) var(--hs-2); box-shadow: var(--hs-shadow-xs);
}

/* ------------------------------------------------------------ app states */

.hs-skeleton { background: var(--hs-surface-raised); border: var(--hs-border); height: 16px;
  animation: hs-pulse 1s var(--hs-ease) infinite; }
.hs-empty { display: flex; flex-direction: column; align-items: center; gap: var(--hs-4);
  padding: var(--hs-16) var(--hs-6); text-align: center; }
.hs-empty__title { font-family: var(--hs-font-display); font-size: 20px; font-weight: 700; }

/* ---------------------------------------------------------- block: hero */

.hs-hero { text-align: center; padding: var(--hs-16) 0 var(--hs-12); }
.hs-hero h1 { font-size: 48px; line-height: 1; }
.hs-hero p { color: var(--hs-muted); font-size: 18px; max-width: 560px; margin: var(--hs-6) auto 0; }
.hs-eyebrow {
  display: inline-block; background: var(--hs-lavender); color: var(--hs-on-fill);
  border: var(--hs-border); box-shadow: var(--hs-shadow-sm);
  padding: var(--hs-1) var(--hs-3); margin-bottom: var(--hs-6);
  font-family: var(--hs-font-mono); font-size: 10px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em;
}

/* ---------------------------------------------------- block: stat strip */

.hs-strip {
  border-top: var(--hs-border); border-bottom: var(--hs-border);
  background: var(--hs-surface-raised); padding: var(--hs-8) var(--hs-6);
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--hs-6); text-align: center;
}
.hs-strip__n { font-family: var(--hs-font-display); font-size: 36px; font-weight: 700; line-height: 1; }
.hs-strip__l { font-family: var(--hs-font-mono); font-size: 10px; font-weight: 700;
  text-transform: uppercase; color: var(--hs-muted); margin-top: var(--hs-2); }

/* ----------------------------------------------------------- block: grid */

.hs-grid { display: grid; gap: var(--hs-6); grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.hs-grid--3 { grid-template-columns: repeat(3, 1fr); }

/* ------------------------------------------------------ block: workspace */

.hs-app { display: grid; grid-template-columns: 240px minmax(380px, 1fr); height: 100vh; }
.hs-sidebar { background: var(--hs-surface-raised); border-right: var(--hs-border);
  padding: var(--hs-4); overflow-y: auto; }
.hs-main { display: flex; flex-direction: column; overflow: hidden; }
.hs-topbar { border-bottom: var(--hs-border); background: var(--hs-canvas);
  padding: var(--hs-4) var(--hs-6); display: flex; align-items: center;
  justify-content: space-between; gap: var(--hs-4); }
.hs-feed { flex: 1; min-height: 0; overflow-y: auto; padding: var(--hs-6);
  display: flex; flex-direction: column; gap: var(--hs-6); }
.hs-msg { display: flex; gap: var(--hs-3); }
.hs-msg__name { font-family: var(--hs-font-display); font-weight: 700; font-size: 15px; }
.hs-msg__time { font-family: var(--hs-font-mono); font-size: 10px; color: var(--hs-muted); }
.hs-composer { border-top: var(--hs-border); padding: var(--hs-4) var(--hs-6);
  display: flex; gap: var(--hs-3); }

/* ---------------------------------------------------------- responsive */

@media (max-width: 900px) {
  .hs-app { grid-template-columns: 1fr; height: auto; }
  .hs-sidebar { border-right: 0; border-bottom: var(--hs-border); }
  .hs-grid--3 { grid-template-columns: 1fr; }
  .hs-hero h1 { font-size: 36px; }
}