/* tools.css — shared styling for the interactive tool blocks.
 *
 * Companion to js/mini-tone.js. Everything here is written against the
 * site's semantic tokens (--ink / --paper / --amber / --text / --rule), so a
 * page joins in by linking this file after its own <style> block, exactly the
 * way it links theme.css. No literal colours: the tool has to read correctly
 * in both the day and the night palette.
 *
 * Loaded by: binaural-beat-calculator.html, hearing-range-test.html,
 * noise-generator.html, isochronic-tones-generator.html,
 * pure-tone-generator.html.
 */

/* ---- the tone player -------------------------------------------------- */
.mtone {
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  background: var(--ink-2);
  padding: 28px 30px;
  margin: 0 0 28px;
}
.mtone-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 18px;
}
.mtone-eyebrow strong { color: var(--amber); font-weight: 500; }

.mtone-stage {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.mtone-play {
  flex: 0 0 auto;
  min-width: 108px;
  padding: 15px 26px;
  border: 1px solid var(--amber);
  border-radius: 100px;
  background: transparent;
  color: var(--amber);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  letter-spacing: .12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background .25s ease, color .25s ease;
}
.mtone-play:hover:not(:disabled) { background: var(--amber); color: var(--ink); }
.mtone-play:disabled { opacity: .45; cursor: not-allowed; }
.mtone.is-playing .mtone-play { background: var(--amber); color: var(--ink); }

.mtone-readout {
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace;
}
.mtone-readout div { display: flex; flex-direction: column; gap: 3px; }
.mtone-readout span {
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.mtone-readout strong {
  font-size: 21px;
  font-weight: 400;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.mtone-controls { display: grid; gap: 18px; }
.mtone-field { display: grid; gap: 7px; }
.mtone-field label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-dim);
  display: flex;
  justify-content: space-between;
  gap: 12px;
}
.mtone-field label b { color: var(--amber); font-weight: 500; }
.mtone input[type="range"] { width: 100%; accent-color: var(--amber); }

.mtone-modes, .mtone-presets { display: flex; flex-wrap: wrap; gap: 8px; }
.mtone-modes button, .mtone-presets button {
  padding: 9px 15px;
  border: 1px solid var(--rule-strong);
  border-radius: 100px;
  background: transparent;
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color .25s ease, color .25s ease;
}
.mtone-modes button:hover, .mtone-presets button:hover { color: var(--paper); border-color: var(--paper); }
.mtone-modes button[aria-pressed="true"],
.mtone-presets button[aria-pressed="true"] { border-color: var(--amber); color: var(--amber); }

.mtone-status {
  margin: 16px 0 0;
  font-size: 14px;
  color: var(--text-dim);
  min-height: 1.4em;
}
.mtone-note {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-dim);
  padding-top: 14px;
  border-top: 1px solid var(--rule);
}
.mtone-note a { color: var(--amber); }

@media (max-width: 560px) {
  .mtone { padding: 22px 20px; }
  .mtone-stage { gap: 16px; }
  .mtone-readout { gap: 20px; }
  .mtone-readout strong { font-size: 18px; }
}

/* ---- the calculator --------------------------------------------------- */
.calc {
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  background: var(--ink-2);
  padding: 28px 30px;
  margin: 0 0 24px;
}
.calc-tabs { display: flex; gap: 8px; margin-bottom: 22px; flex-wrap: wrap; }
.calc-tabs button {
  padding: 10px 16px;
  border: 1px solid var(--rule-strong);
  border-radius: 100px;
  background: transparent;
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color .25s ease, color .25s ease;
}
.calc-tabs button[aria-selected="true"] { border-color: var(--amber); color: var(--amber); }

/* The panels toggle with the hidden attribute. On this site a bare [hidden]
   loses to any rule that sets display, so the matching rule ships here — the
   trap that made three earlier components silently fail to hide. */
.calc-panel { display: grid; gap: 16px; }
.calc-panel[hidden] { display: none; }

.calc-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 560px) { .calc-row { grid-template-columns: 1fr; } }
.calc-field { display: grid; gap: 6px; }
.calc-field label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.calc-field input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--rule-strong);
  border-radius: 4px;
  background: var(--ink);
  color: var(--paper);
  font-family: 'JetBrains Mono', monospace;
  font-size: 16px;
}
.calc-field input:focus { outline: 2px solid var(--amber); outline-offset: 1px; }
.calc-hint { font-size: 12.5px; color: var(--text-dim); }

.calc-out {
  margin-top: 4px;
  padding: 20px 22px;
  border: 1px solid var(--rule-strong);
  border-left: 3px solid var(--signal);
  border-radius: 4px;
  background: var(--ink);
}
.calc-out-grid { display: flex; flex-wrap: wrap; gap: 28px; font-family: 'JetBrains Mono', monospace; }
.calc-out-grid div { display: flex; flex-direction: column; gap: 3px; }
.calc-out-grid span {
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.calc-out-grid strong {
  font-size: 23px;
  font-weight: 400;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}
.calc-band { margin-top: 16px; font-size: 14.5px; color: var(--text); line-height: 1.6; }
.calc-band .dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 8px; vertical-align: middle; }
.calc-err { color: var(--coral); }
.calc-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.calc-actions .mtone-play { min-width: 0; }
.calc-open {
  display: inline-flex;
  align-items: center;
  padding: 15px 22px;
  border: 1px solid var(--rule-strong);
  border-radius: 100px;
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  transition: border-color .25s ease, color .25s ease;
}
.calc-open:hover { border-color: var(--amber); color: var(--amber); }

@media (max-width: 560px) { .calc { padding: 22px 20px; } }

/* ---- the frequency sweep --------------------------------------------- */
.sweep-scale {
  display: flex;
  justify-content: space-between;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--text-dim);
  margin-top: 6px;
}
.sweep-marks { margin-top: 18px; display: grid; gap: 8px; }
.sweep-mark {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 14px;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--ink);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--text);
}
.sweep-mark b { color: var(--amber); font-weight: 500; }
.sweep-marks:empty { display: none; }

/* ---- the safety block that must never be missed ---------------------- */
.tool-caution {
  border: 1px solid var(--coral);
  border-left: 3px solid var(--coral);
  border-radius: 4px;
  background: color-mix(in srgb, var(--coral) 7%, transparent);
  padding: 20px 24px;
  margin: 0 0 28px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
}
@supports not (background: color-mix(in srgb, red 7%, transparent)) {
  .tool-caution { background: var(--ink-2); }
}
.tool-caution strong { color: var(--paper); }
.tool-caution a { color: var(--amber); }
.tool-caution p { margin: 0 0 10px; }
.tool-caution p:last-child { margin-bottom: 0; }

/* ---- the coloured-noise player --------------------------------------- */
/* Companion to js/noise.js. The four existing noise-colour pages carry their
   own inline copy of this; new pages use the shared file. */
.ngen {
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  background: var(--ink-2);
  padding: 28px 30px;
  margin: 0 0 28px;
}
.ngen-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 18px;
}
.ngen-eyebrow strong { color: var(--amber); font-weight: 500; }

.ngen-colors { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.ngen-color {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px 16px;
  border: 1px solid var(--rule-strong);
  border-radius: 100px;
  background: transparent;
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color .25s ease, color .25s ease;
}
.ngen-color:hover { color: var(--paper); border-color: var(--paper); }
.ngen-color[aria-pressed="true"] { border-color: var(--amber); color: var(--amber); }
.ngen-swatch { width: 10px; height: 10px; border-radius: 50%; flex: 0 0 auto; }

.ngen-stage { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.ngen-play {
  flex: 0 0 auto;
  min-width: 108px;
  padding: 15px 26px;
  border: 1px solid var(--amber);
  border-radius: 100px;
  background: transparent;
  color: var(--amber);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  letter-spacing: .12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background .25s ease, color .25s ease;
}
.ngen-play:hover:not(:disabled) { background: var(--amber); color: var(--ink); }
.ngen-play:disabled { opacity: .45; cursor: not-allowed; }
.ngen.is-playing .ngen-play { background: var(--amber); color: var(--ink); }

.ngen-field { display: grid; gap: 7px; flex: 1 1 200px; }
.ngen-field label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.ngen input[type="range"] { width: 100%; accent-color: var(--amber); }
.ngen select {
  padding: 10px 12px;
  border: 1px solid var(--rule-strong);
  border-radius: 4px;
  background: var(--ink);
  color: var(--paper);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
}
.ngen-status { margin: 18px 0 0; font-size: 14px; color: var(--text-dim); min-height: 1.4em; }
.ngen-note {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-dim);
  padding-top: 14px;
  border-top: 1px solid var(--rule);
}
.ngen-note a { color: var(--amber); }

@media (max-width: 560px) {
  .ngen { padding: 22px 20px; }
  .ngen-stage { gap: 16px; }
}

/* ---- the glossary ------------------------------------------------------ */
.g-jump { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 12px; }
.g-jump a {
  padding: 9px 16px;
  border: 1px solid var(--rule-strong);
  border-radius: 100px;
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  transition: border-color .25s ease, color .25s ease;
}
.g-jump a:hover { border-color: var(--amber); color: var(--amber); }

.glossary {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule-strong);
  border-radius: 4px;
  overflow: hidden;
}
/* scroll-margin so a #term deep link is not hidden under the sticky nav */
.g-item { background: var(--ink-2); padding: 20px 24px; scroll-margin-top: 90px; }
.g-item:target { background: var(--ink-3); box-shadow: inset 3px 0 0 var(--amber); }
.glossary dt {
  font-family: 'Fraunces', serif;
  font-weight: 400;
  font-size: 21px;
  letter-spacing: -.01em;
  color: var(--paper);
  margin-bottom: 8px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
}
.g-alias {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 400;
}
.glossary dd { margin: 0; font-size: 16px; line-height: 1.7; color: var(--text); }
.glossary dd a { color: var(--amber); }
.g-more {
  display: inline-block;
  margin-left: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  white-space: nowrap;
}
@media (max-width: 560px) { .g-item { padding: 18px; } .glossary dt { font-size: 19px; } }