/* Capsule toolkit v2.0.0 — shared chrome for single-file shrine tools.
   The online tool page loads /toolkit/capsule.css via a link tag marked
   with the data-bundle attribute; bundle-tools.mjs inlines this file in
   place of that tag when producing /downloads/<tool-id>.html.
   Self-contained: no remote fonts, no images, no external requests.

   ────────────────────────────────────────────────────────────
   HOW TO BUILD A NEW TOOL (design contract)
   ────────────────────────────────────────────────────────────
   Copy tools/shared/template.html. The page CSS should normally be
   near-empty: everything below is already styled. Only add rules for
   genuinely page-specific chrome (a unique layout, a bespoke widget).

   Component index — use these classes, do not re-style them:
     Layout    .container  .row (flex, wrap, centered gap)  .spacer (flex:1)
               .field (stacked label+control)  .hero (split header + .badge)
               .table-scroll (overflow-x wrapper)
     Chrome    header/kicker/h1/subtitle, h2, .card, footer.foot
     Controls  input[type=number|text|password|url|email|file], select,
               textarea, checkbox/radio (accent), label, .field label
     Buttons   .btn  .btn--primary  .btn--success  .btn--sm  .btn--ghost
               (:disabled and :focus-visible handled globally)
     Status    .status (.error), .err, .help (.hl brass, .warn violet),
               .ok (term) .warn (amber) .bad (rust) — semantic text colors
     Data      table/th/td, .total (.label .value .detail), .stat-grid .stat,
               .file-list, pre, kbd, .pill, .pill--click, .badge, .tip,
               .progress (track + .progress__fill; indeterminate variant)
     Input     .drop (+.drag) dropzone, details/summary fold
   States     [hidden] always hides; prefers-reduced-motion is globally
              honored; :focus-visible ring uses --cap-focus (page may
              override the token, e.g. text-cipher uses term green).
   Theming    Every color is a --cap-* token; a theme variant is just a
              wrapper that overrides the tokens (e.g. .capsule--light).
   No JS is required to look right; capsule.js helpers are opt-in.
   ──────────────────────────────────────────────────────────── */

:root {
  --cap-void:    #07080b;
  --cap-bg:      #0b0d10;
  --cap-panel:   #10131a;
  --cap-panel-2: #171b24;
  --cap-line:    #232834;
  --cap-line-2:  #37404f;
  --cap-ink:     #d6d3c8;
  --cap-dim:     #8f8c82;
  --cap-faint:   #5c5e66;
  --cap-rust:    #b8432f;
  --cap-rust-2:  #e0603f;
  --cap-rust-d:  #7c2d1f;
  --cap-brass:   #b08d57;
  --cap-term:    #6fc27f;
  --cap-amber:   #e0a95c;
  --cap-violet:  #9b6bb8;
  --cap-focus:   var(--cap-rust);
  --cap-radius:      4px;
  --cap-radius-sm:   3px;
  --cap-font: ui-sans-serif, system-ui, "Segoe UI", "PingFang SC",
              "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --cap-mono: ui-monospace, "Cascadia Mono", "JetBrains Mono", Consolas,
              "Courier New", monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body.capsule {
  color-scheme: dark;
  background: var(--cap-bg);
  color: var(--cap-ink);
  font-family: var(--cap-font);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}

body.capsule::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 40% at 50% -10%, rgba(184, 67, 47, 0.09), transparent 60%),
    linear-gradient(var(--cap-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--cap-line) 1px, transparent 1px);
  background-size: auto, 48px 48px, 48px 48px;
  opacity: 0.45;
}

.capsule ::selection { background: rgba(184, 67, 47, 0.45); }

.capsule a { color: var(--cap-brass); }
.capsule a:hover { color: var(--cap-rust-2); }

/* ── layout ─────────────────────────────────────────── */

.capsule .container {
  max-width: 820px;
  margin: 0 auto;
  padding: 1.6rem 1rem 2.5rem;
}

/* flex row: inputs + labels + buttons on one line, wraps on narrow screens */
.capsule .row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-wrap: wrap;
}
.capsule .row label { white-space: nowrap; }
.capsule .row + .row { margin-top: 0.55rem; }
.capsule .spacer { flex: 1; }

/* stacked field: compact mono uppercase label over a full-width control */
.capsule .field {
  display: grid;
  gap: 0.28rem;
  align-content: start;
  min-width: 0;
}
.capsule .field label {
  font-family: var(--cap-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cap-dim);
}
.capsule .field input,
.capsule .field select,
.capsule .field textarea { width: 100%; }

/* split header: left-aligned title block + right-side chip (see .badge) */
.capsule .hero {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: end;
  text-align: left;
}
.capsule .hero .badge { align-self: center; }

/* scrollable table wrapper for wide tables on small screens */
.capsule .table-scroll { overflow-x: auto; margin: 0.6rem 0; }
.capsule .table-scroll table { margin: 0; }

/* ── header / typography ────────────────────────────── */

.capsule header {
  text-align: center;
  padding: 1.2rem 0 1.1rem;
  border-bottom: 1px solid var(--cap-line);
  margin-bottom: 1.2rem;
  position: relative;
}

.capsule header::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 30%;
  right: 30%;
  height: 1px;
  background: var(--cap-rust);
}

.capsule .kicker {
  font-family: var(--cap-mono);
  font-size: 0.68rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--cap-rust-2);
  margin-bottom: 0.5rem;
}

.capsule h1 {
  font-family: var(--cap-mono);
  font-size: clamp(1.25rem, 4vw, 1.7rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--cap-ink);
}

.capsule .subtitle {
  margin-top: 0.35rem;
  font-size: 0.8rem;
  color: var(--cap-dim);
}

.capsule h2 {
  font-family: var(--cap-mono);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cap-rust);
  margin-bottom: 0.7rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.capsule h2::before { content: "◆"; font-size: 0.5rem; color: var(--cap-rust-d); }

/* ── panels ──────────────────────────────────────────── */

.capsule .card {
  background: var(--cap-panel);
  border: 1px solid var(--cap-line);
  border-radius: var(--cap-radius);
  padding: 1rem 1.15rem;
  margin-bottom: 1rem;
}

/* dropzone: dashed plate; .drag while dragging files over it */
.capsule .drop {
  margin-top: 0.6rem;
  border: 1px dashed var(--cap-line-2);
  border-radius: 6px;
  padding: 1rem;
  background: rgba(224, 169, 92, 0.05);
}
.capsule .drop.drag {
  outline: 3px solid rgba(224, 169, 92, 0.35);
  outline-offset: 2px;
}

/* ── buttons ─────────────────────────────────────────── */

.capsule button {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

.capsule .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  background: transparent;
  border: 1px solid var(--cap-rust-d);
  color: var(--cap-rust-2);
  padding: 0.4rem 1rem;
  min-height: 38px;
  border-radius: var(--cap-radius-sm);
  font-size: 0.78rem;
  font-weight: 700;
  font-family: inherit;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s;
}

.capsule .btn:hover {
  background: var(--cap-rust);
  border-color: var(--cap-rust);
  color: #fff;
}

.capsule .btn--primary {
  background: var(--cap-rust);
  color: #fff;
  border-color: var(--cap-rust);
}

.capsule .btn--primary:hover {
  background: var(--cap-rust-2);
  border-color: var(--cap-rust-2);
}

.capsule .btn--success {
  background: rgba(111, 194, 127, 0.12);
  border-color: var(--cap-term);
  color: var(--cap-term);
}

.capsule .btn--success:hover {
  background: var(--cap-term);
  border-color: var(--cap-term);
  color: var(--cap-void);
}

.capsule .btn--sm {
  font-size: 0.68rem;
  padding: 0.28rem 0.65rem;
  min-height: 32px;
}

.capsule .btn--ghost { border-color: transparent; color: var(--cap-dim); }
.capsule .btn--ghost:hover { color: var(--cap-rust-2); background: transparent; }

.capsule .btn:disabled,
.capsule .btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* ── form controls ───────────────────────────────────── */

.capsule label { font-size: 0.82rem; color: var(--cap-dim); }

.capsule input[type="number"],
.capsule input[type="text"],
.capsule input[type="password"],
.capsule input[type="url"],
.capsule input[type="email"],
.capsule select {
  background: var(--cap-bg);
  border: 1px solid var(--cap-line-2);
  color: var(--cap-ink);
  padding: 0.42rem 0.6rem;
  border-radius: var(--cap-radius-sm);
  font-size: 0.85rem;
  font-family: inherit;
  outline: none;
}

.capsule textarea {
  background: var(--cap-bg);
  border: 1px solid var(--cap-line-2);
  color: var(--cap-ink);
  padding: 0.55rem 0.6rem;
  border-radius: var(--cap-radius-sm);
  font-size: 0.85rem;
  font-family: var(--cap-mono);
  line-height: 1.55;
  resize: vertical;
  min-height: 5rem;
  outline: none;
}

.capsule textarea[readonly] { color: var(--cap-dim); }

.capsule input:focus,
.capsule select:focus,
.capsule textarea:focus {
  border-color: var(--cap-rust);
  box-shadow: 0 0 6px rgba(184, 67, 47, 0.35);
}

.capsule input[type="checkbox"],
.capsule input[type="radio"] {
  accent-color: var(--cap-rust);
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

/* native file picker dressed as a capsule control */
.capsule input[type="file"] {
  width: 100%;
  padding: 0.45rem 0.6rem;
  font-size: 0.85rem;
  color: var(--cap-ink);
  background: var(--cap-bg);
  border: 1px dashed var(--cap-line-2);
  border-radius: var(--cap-radius-sm);
  cursor: pointer;
}
.capsule input[type="file"]::file-selector-button {
  font-family: var(--cap-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cap-rust-2);
  background: transparent;
  border: 1px solid var(--cap-rust-d);
  border-radius: var(--cap-radius-sm);
  padding: 0.3rem 0.7rem;
  margin-right: 0.7rem;
  cursor: pointer;
  transition: all 0.15s;
}
.capsule input[type="file"]::file-selector-button:hover {
  background: var(--cap-rust);
  border-color: var(--cap-rust);
  color: #fff;
}

/* ── status, help, errors, semantic colors ───────────── */

.capsule .status {
  margin-top: 0.9rem;
  padding: 0.65rem 0.8rem;
  min-height: 2.5rem;
  display: flex;
  align-items: center;
  border-left: 4px solid var(--cap-rust);
  background: rgba(184, 67, 47, 0.07);
  font-size: 0.8rem;
  color: var(--cap-ink);
}
.capsule .status.error {
  border-left-color: var(--cap-rust-2);
  background: rgba(184, 67, 47, 0.12);
}

.capsule .help {
  font-size: 0.74rem;
  color: var(--cap-dim);
  margin-top: 0.55rem;
  line-height: 1.55;
}

.capsule .help .hl { color: var(--cap-brass); }
.capsule .help .warn { color: var(--cap-violet); }

.capsule .err {
  color: var(--cap-rust-2);
  font-size: 0.8rem;
  margin-top: 0.45rem;
}

/* semantic text colors for results — ok / warn / bad */
.capsule .ok   { color: var(--cap-term); }
.capsule .warn { color: var(--cap-amber); }
.capsule .bad  { color: var(--cap-rust-2); }

/* ── data displays ───────────────────────────────────── */

.capsule table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.6rem 0;
}

.capsule th {
  font-family: var(--cap-mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cap-dim);
  padding: 0.4rem 0.5rem;
  border-bottom: 1px solid var(--cap-line-2);
  text-align: center;
}

.capsule td {
  padding: 0.45rem 0.5rem;
  text-align: center;
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  border-bottom: 1px solid rgba(35, 40, 52, 0.6);
}

.capsule tr:hover td { background: rgba(184, 67, 47, 0.05); }

.capsule .total {
  margin-top: 0.9rem;
  padding: 0.7rem 1rem;
  background: var(--cap-panel-2);
  border: 1px solid var(--cap-line);
  border-radius: var(--cap-radius-sm);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.8rem;
}

.capsule .total .label {
  font-family: var(--cap-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cap-dim);
}

.capsule .total .value {
  font-family: var(--cap-mono);
  font-size: 1.35rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--cap-rust-2);
}

.capsule .total .detail { font-size: 0.74rem; color: var(--cap-dim); }

/* progress bar: track + fill; fill width set inline (0–100%).
   .progress--indeterminate shows an animated chunk for work with no
   measurable progress (key derivation, network waits). Fill color via
   --cap-progress (defaults to brass). */
.capsule .progress {
  position: relative;
  height: 8px;
  margin-top: 0.8rem;
  border: 1px solid var(--cap-line-2);
  border-radius: 999px;
  background: var(--cap-void);
  overflow: hidden;
}
.capsule .progress__fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0%;
  background: var(--cap-progress, var(--cap-brass));
  border-radius: inherit;
  transition: width 0.3s ease;
}
.capsule .progress--indeterminate .progress__fill {
  width: 40%;
  animation: progress-slide 1.1s ease-in-out infinite alternate;
}
@keyframes progress-slide {
  from { transform: translateX(-20%); }
  to   { transform: translateX(200%); }
}

/* stat chips: label under a big mono number (auto-columns) */
.capsule .stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.65rem;
  margin-top: 0.9rem;
}
.capsule .stat {
  border: 1px solid var(--cap-line);
  border-radius: var(--cap-radius);
  padding: 0.7rem 0.8rem;
  background: var(--cap-panel-2);
  text-align: center;
}
.capsule .stat b {
  display: block;
  font-family: var(--cap-mono);
  font-size: 1.45rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--cap-rust-2);
  line-height: 1.2;
}
.capsule .stat span {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.74rem;
  color: var(--cap-dim);
}

/* file list: name + small detail on one row */
.capsule .file-list { list-style: none; margin: 0.8rem 0 0; }
.capsule .file-list li {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--cap-line);
  padding: 0.5rem 0;
  font-size: 0.82rem;
}
.capsule .file-list small { color: var(--cap-dim); font-size: 0.72rem; }

/* code blocks and keys */
.capsule pre {
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 240px;
  overflow: auto;
  background: var(--cap-void);
  color: var(--cap-ink);
  padding: 0.8rem;
  border: 1px solid var(--cap-line);
  border-radius: var(--cap-radius-sm);
  font-family: var(--cap-mono);
  font-size: 0.78rem;
  line-height: 1.6;
}

.capsule kbd {
  padding: 0.04rem 0.3rem;
  border: 1px solid var(--cap-line-2);
  border-bottom-width: 2px;
  border-radius: var(--cap-radius-sm);
  background: var(--cap-panel);
  color: var(--cap-dim);
  font-family: var(--cap-mono);
  font-size: 0.72rem;
}

/* pills: static chip and clickable example chip */
.capsule .pill {
  display: inline-block;
  padding: 0.08rem 0.45rem;
  border: 1px solid var(--cap-line-2);
  border-radius: 999px;
  font-family: var(--cap-mono);
  font-size: 0.62rem;
  color: var(--cap-dim);
}

.capsule .pill--click {
  cursor: pointer;
  background: var(--cap-panel-2);
  color: var(--cap-brass);
  border-color: var(--cap-line-2);
  transition: color 0.15s, border-color 0.15s;
}
.capsule .pill--click:hover {
  color: var(--cap-rust-2);
  border-color: var(--cap-rust);
}

/* metadata chip for headers / results */
.capsule .badge {
  display: inline-block;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--cap-brass);
  border-radius: 999px;
  color: var(--cap-brass);
  font-family: var(--cap-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

/* inline help marker: circle "?" with a title tooltip */
.capsule .tip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.2rem;
  height: 1.2rem;
  border: 1px solid var(--cap-brass);
  border-radius: 50%;
  color: var(--cap-brass);
  font-size: 0.72rem;
  font-weight: 700;
  cursor: help;
  margin-left: 0.3rem;
  vertical-align: middle;
}

/* ── collapsible fold (details/summary) ──────────────── */

.capsule details { margin-top: 0.6rem; }
.capsule summary {
  cursor: pointer;
  user-select: none;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--cap-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cap-brass);
  padding: 0.3rem 0;
}
.capsule summary::-webkit-details-marker { display: none; }
.capsule summary::before { content: "▸"; color: var(--cap-term); font-size: 0.7rem; }
.capsule details[open] summary::before { content: "▾"; }

/* ── footer ──────────────────────────────────────────── */

.capsule footer.foot {
  margin-top: 1.6rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--cap-line);
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
  flex-wrap: wrap;
  font-family: var(--cap-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  color: var(--cap-faint);
}

/* ── a11y / states ───────────────────────────────────── */

/* everything focusable gets a visible ring; inputs keep their glow instead */
.capsule :focus-visible {
  outline: 2px solid var(--cap-focus);
  outline-offset: 2px;
}
.capsule input:focus-visible,
.capsule select:focus-visible,
.capsule textarea:focus-visible {
  outline: none;
}

.capsule [hidden] { display: none !important; }

@media (prefers-reduced-motion: reduce) {
  .capsule *,
  .capsule *::before,
  .capsule *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 620px) {
  .capsule .hero { grid-template-columns: 1fr; align-items: start; }
}

@media (max-width: 520px) {
  .capsule .container { padding: 1.1rem 0.6rem 2rem; }
}