/* crypto-key-classifier demo — NEWELL Brand System v1.0.0
   Source of truth: e:/vaults/anything.xyz/50_Projects/brand-system/tokens.json
   Tokens applied verbatim — no invented hex, no decorative effects. */

:root {
  /* Color tokens (canonical) */
  --color-primary:    #00FF41;
  --color-accent:     #1AFF72;
  --color-background: #0A0A0A;
  --color-surface:    #0F0F0F;
  --color-text:       #FFFFFF;
  --color-muted:      #A0A0A0;
  --color-border:     #1F1F1F;

  /* Spacing — 8px grid */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Typography */
  --font-display: "Space Grotesk", system-ui, -apple-system, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "Cascadia Mono", "Consolas", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 15px;
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 120ms ease;
}
a:hover { color: var(--color-accent); }

/* ===== Loader ===== */
.loader {
  position: fixed; inset: 0;
  background: var(--color-background);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: var(--space-3);
  z-index: 100;
  transition: opacity 200ms ease;
}
.loader--hidden { opacity: 0; pointer-events: none; }
.loader__spinner {
  width: 24px; height: 24px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  animation: spin 800ms linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loader__text {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-muted);
  letter-spacing: 0.5px;
}
.loader__hint {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-muted);
  opacity: 0.7;
}

/* ===== Masthead ===== */
.masthead {
  display: flex; justify-content: space-between; align-items: center;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}
.masthead__logo {
  display: flex; align-items: center; gap: var(--space-2);
  text-decoration: none;
}
.masthead__logo svg { width: 20px; height: 24px; display: block; }
.masthead__wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--color-text);
}
.masthead__nav { display: flex; gap: var(--space-4); }
.masthead__nav a {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-muted);
  text-transform: lowercase;
}
.masthead__nav a:hover { color: var(--color-primary); }

.masthead__cluster {
  display: flex; align-items: center; gap: var(--space-4);
}
.freshness {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3px;
  color: var(--color-muted);
  white-space: nowrap;
}
.freshness a {
  /* Inside the badge, links are primary green — the canonical "actionable" signal. */
  color: var(--color-primary);
  font-weight: 500;
}
.freshness a:hover { color: var(--color-accent); }

/* ===== Page ===== */
.page {
  max-width: 880px;
  margin: 0 auto;
  padding: var(--space-7) var(--space-6) var(--space-9);
}

/* ===== Hero ===== */
.hero { margin-bottom: var(--space-6); }
.hero__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 40px;
  letter-spacing: -1px;
  line-height: 1.1;
  margin: 0 0 var(--space-3);
  color: var(--color-text);
}
.hero__title .accent { color: var(--color-primary); }
.hero__lede {
  color: var(--color-muted);
  font-size: 16px;
  max-width: 64ch;
  margin: 0;
}
.hero__lede strong {
  color: var(--color-text);
  font-weight: 500;
}

/* ===== Safety banner ===== */
.safety {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-7);
  font-size: 13px;
  display: flex; gap: var(--space-3); align-items: flex-start;
  color: var(--color-muted);
}
.safety__icon {
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 1px;
  padding-top: 1px;
}
.safety__text strong { color: var(--color-text); font-weight: 500; }

/* ===== Input panel ===== */
.input-panel { margin-bottom: var(--space-6); }
.input-panel__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: var(--space-2);
}
.input-panel__textarea {
  width: 100%;
  resize: vertical;
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  word-break: break-all;
  transition: border-color 120ms ease;
}
.input-panel__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}
.input-panel__textarea::placeholder { color: var(--color-muted); opacity: 0.6; }

.input-panel__row {
  display: flex; flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  margin-top: var(--space-4);
}
.input-panel__toggle {
  display: flex; align-items: center; gap: var(--space-2);
  cursor: pointer;
  font-size: 13px;
  color: var(--color-muted);
}
.input-panel__toggle input[type="checkbox"] {
  accent-color: var(--color-primary);
}
.input-panel__toggle input[type="checkbox"]:checked + span { color: var(--color-text); }

.input-panel__example {
  display: flex; align-items: center; gap: var(--space-2);
  font-size: 13px;
  color: var(--color-muted);
}
.input-panel__example select {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-2);
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
}
.input-panel__example select:focus {
  outline: none;
  border-color: var(--color-primary);
}

.input-panel__note {
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-muted);
  font-style: italic;
}

.input-panel__meta {
  display: flex; align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-2);
  min-height: 16px;
}
.bulk-indicator {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-primary);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 1px var(--space-2);
  background: var(--color-surface);
}
.input-panel__hint {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-muted);
  opacity: 0.75;
  font-style: italic;
}

.input-panel__toggle--danger span { color: var(--color-text); }
.input-panel__toggle--danger input[type="checkbox"]:checked + span {
  /* The .input-panel__toggle rule above styles :checked + span muted→text; for the
     danger variant we accent the label green so the ON state reads as "armed." */
  color: var(--color-primary);
}

/* ===== Unmask banner ===== */
.unmask-banner {
  display: flex; align-items: flex-start; gap: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  margin: var(--space-4) 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text);
  letter-spacing: 0.3px;
}
.unmask-banner__glyph {
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
}
.unmask-banner__text strong {
  color: var(--color-primary);
  font-weight: 700;
  letter-spacing: 1px;
}

/* ===== Key groups (bulk mode) ===== */
.key-group {
  margin-bottom: var(--space-5);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(15, 15, 15, 0.4);
}
.key-group__label {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}
.key-group__label-text {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-primary);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  word-break: break-all;
}

/* ===== Buttons ===== */
.btn {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 13px;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 120ms ease;
  letter-spacing: 0.3px;
}
.btn--primary {
  background: var(--color-primary);
  color: var(--color-background);
  border: 1px solid var(--color-primary);
}
.btn--primary:hover:not(:disabled) {
  background: var(--color-accent);
  border-color: var(--color-accent);
}
.btn--ghost {
  background: transparent;
  color: var(--color-muted);
  border: 1px solid var(--color-border);
}
.btn--ghost:hover:not(:disabled) {
  color: var(--color-text);
  border-color: var(--color-muted);
}
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn--sm {
  font-size: 11px;
  padding: 3px var(--space-3);
  letter-spacing: 0.5px;
}

/* ===== History popover ===== */
.input-panel__history {
  position: relative;
  display: inline-block;
}
.history-popover {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  z-index: 20;
  min-width: 320px;
  max-width: 380px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2);
  /* Subtle elevation via solid layering, not blur/glow.
     Surface tokens keep the panel readable on OLED black. */
}
.history-popover__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: 280px;
  overflow-y: auto;
}
.history-popover__item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-2);
  align-items: center;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: transparent;
  border: 1px solid transparent;
  text-align: left;
  width: 100%;
  font-family: var(--font-mono);
  color: var(--color-text);
  transition: border-color 120ms ease, background 120ms ease;
}
.history-popover__item:hover,
.history-popover__item:focus-visible {
  border-color: var(--color-primary);
  background: var(--color-background);
  outline: none;
}
.history-popover__item-value {
  font-size: 12px;
  word-break: break-all;
  color: var(--color-text);
}
.history-popover__item-time {
  font-size: 10px;
  color: var(--color-muted);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.history-popover__empty {
  padding: var(--space-3);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-muted);
  text-align: center;
}
.history-popover__footer {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--space-2);
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-border);
}

/* ===== Keyboard shortcuts overlay ===== */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}
.overlay[hidden] { display: none; }
.overlay__backdrop {
  position: absolute;
  inset: 0;
  background: var(--color-background);
  /* Solid scrim — NO opacity tricks that would tint it; keep it opaque for focus trap legibility. */
}
.overlay__panel {
  position: relative;
  z-index: 1;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  max-width: 480px;
  width: 100%;
}
.overlay__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.5px;
  margin: 0 0 var(--space-4);
  color: var(--color-text);
}
.overlay__list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-2) var(--space-4);
  margin: 0 0 var(--space-5);
  font-family: var(--font-mono);
  font-size: 13px;
}
.overlay__list > dt {
  color: var(--color-text);
  white-space: nowrap;
}
.overlay__list > dd {
  margin: 0;
  color: var(--color-muted);
}

/* kbd — keyboard glyph. NO box-shadow glow; just a bordered chip. */
kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1px var(--space-2);
  letter-spacing: 0.5px;
}

/* ===== Footer hint ===== */
.footer__hint {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-muted);
  letter-spacing: 0.5px;
}

/* ===== Results ===== */
.results:empty::before {
  content: "Results will appear here.";
  display: block;
  padding: var(--space-7);
  text-align: center;
  color: var(--color-muted);
  font-style: italic;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-sm);
}
.results__empty, .results__error {
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  margin: 0;
  font-size: 14px;
}
.results__error {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-surface);
}

.match-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  margin-bottom: var(--space-4);
}
.match-card__head {
  display: flex; align-items: baseline; gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-3);
}
.match-card__chain {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--color-background);
  background: var(--color-primary);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}
.match-card__type {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-text);
}
.match-card__type .sep { color: var(--color-muted); margin: 0 var(--space-1); }
.match-card__conf {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.match-card__bar {
  height: 3px;
  background: var(--color-border);
  border-radius: var(--radius-full, 9999px);
  margin-top: var(--space-2);
  overflow: hidden;
}
.match-card__bar > span {
  display: block;
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-full, 9999px);
}
.match-card__row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--space-2);
  margin-top: var(--space-2);
  font-size: 13px;
  align-items: start;
}
.match-card__row > dt,
.match-card__row > .label,
.match-card__row > span:first-child {
  font-family: var(--font-mono);
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 10px;
  padding-top: 2px;
}
.match-card__row > dd,
.match-card__row > .value {
  margin: 0;
  color: var(--color-text);
  word-break: break-all;
}
.match-card__row > dd { font-family: var(--font-display); }
.match-card__key {
  font-family: var(--font-mono);
  font-size: 13px;
}
.match-card__unmask {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 1px var(--space-2);
  margin-left: var(--space-2);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 120ms ease;
}
.match-card__unmask:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.match-card__section {
  margin-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
}
.match-card__section-title {
  /* Button reset — keep visual parity with the previous <p>. */
  background: transparent;
  border: 0;
  padding: 0;
  margin: 0 0 var(--space-2);
  cursor: pointer;
  font: inherit;
  color: inherit;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  user-select: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}
.match-card__section-title::before {
  content: "[+] ";
  color: var(--color-primary);
}
.match-card__section--open .match-card__section-title::before { content: "[-] "; }
.match-card__section-title-text { display: inline; }
.match-card__section-title:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
.match-card__section-body { font-size: 13px; }
.match-card__section:not(.match-card__section--open) .match-card__section-body { display: none; }

.match-card__alt {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: var(--space-2);
  padding: 2px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  align-items: start;
}
.match-card__alt > code {
  color: var(--color-primary);
  font-family: var(--font-mono);
}
.match-card__alt > span { color: var(--color-text); word-break: break-all; }

.match-card__copy {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: lowercase;
  letter-spacing: 0.5px;
  padding: 1px var(--space-2);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color 120ms ease, border-color 120ms ease;
  align-self: start;
}
.match-card__copy:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.match-card__copy:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}
.match-card__copy--done {
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.match-card__copy-all {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: lowercase;
  letter-spacing: 0.5px;
  color: var(--color-muted);
}

.match-card__trace {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-muted);
  margin: 0;
  white-space: pre-wrap;
  background: var(--color-background);
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-5) var(--space-6);
  display: flex; flex-direction: column;
  align-items: center; gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-muted);
  letter-spacing: 0.3px;
}
.footer__links {
  display: flex; flex-wrap: wrap;
  align-items: center; justify-content: center;
  gap: var(--space-4);
}
.footer__link {
  display: inline-flex; align-items: center; gap: var(--space-1);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: lowercase;
  letter-spacing: 0.5px;
  padding: var(--space-1) 0;
  transition: color 120ms ease;
}
.footer__link:hover { color: var(--color-primary); }
.footer__icon { width: 14px; height: 14px; flex-shrink: 0; }
.footer__count { color: var(--color-primary); font-weight: 500; }
.footer__credit { text-align: center; }
.footer a { color: var(--color-primary); }
.footer .version { color: var(--color-text); }

/* ===== Responsive ===== */
@media (max-width: 600px) {
  .page {
    padding: var(--space-5) var(--space-4) var(--space-7);
  }
  .hero__title { font-size: 30px; }
  .masthead { padding: var(--space-3) var(--space-4); }
  .footer { padding: var(--space-4); }
  .footer__links { gap: var(--space-3); }
  /* Input row collapses to a vertical stack on mobile so long example
     labels don't blow out the viewport width. */
  .input-panel__row {
    flex-direction: column;
    align-items: stretch;
  }
  .input-panel__row > * { width: 100%; }
  .input-panel__example { flex-direction: column; align-items: flex-start; gap: var(--space-1); }
  .input-panel__example select { width: 100%; max-width: 100%; }
  /* The select's intrinsic width comes from long option text; let it shrink
     and show a horizontal scrollbar inside the control instead of forcing
     the whole page wider. */
  #example-select {
    width: 100%;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  /* History popover: anchor to the right edge of the row instead of the
     button so it doesn't get clipped off-screen on narrow viewports. */
  .history-popover {
    left: auto;
    right: 0;
    min-width: unset;
    max-width: calc(100vw - var(--space-8));
  }
  .input-panel__history {
    position: static;
  }
  /* Match-card grid: collapse the label column on mobile. */
  .match-card__row {
    grid-template-columns: 1fr;
    gap: var(--space-1);
  }
  .match-card__alt {
    grid-template-columns: auto 1fr;
  }
  .match-card__alt > .match-card__copy {
    grid-column: 1 / -1;
    justify-self: start;
  }
}