/* /tools: form controls and tool layouts. Tokens come from tokens.css and the
   shared chrome (nav, panels, rows, labels, footer) from site.css. */

[hidden] { display: none !important; }

.tools { padding-top: 88px; }
.tools .wrap { max-width: 1120px; }
.tools .head {
  grid-template-columns: auto 1fr auto;
  grid-template-areas: "title rule idx";
  justify-items: start;
}
.tools .head .rule:first-of-type { grid-area: rule; width: 100%; }
.tools .head .idx { grid-area: idx; }
.tools .head { margin-bottom: 12px; }
.tools .head .title::after { display: none; }
.note {
  margin: 0 0 24px;
  color: var(--mute);
  max-width: 62ch;
}

.tools-grid { display: block; }
.toolrail { display: none; }
@media (min-width: 1024px) {
  .tools-grid {
    display: grid;
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }
  .toolrail {
    position: sticky;
    top: 80px;
    display: grid;
    gap: 2px;
    padding: 12px 0 12px 14px;
    border-left: 1px solid var(--line);
  }
  .toolrail .lbl { margin: 0 0 8px; }
  .toolrail a {
    position: relative;
    display: block;
    padding: 5px 0;
    font: 500 var(--s-11) / 16px var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--mute);
    transition: color var(--t-fast) linear;
  }
  .toolrail a:hover { color: var(--bone); }
  .toolrail a[aria-current="true"] { color: var(--signal); }
  .toolrail a[aria-current="true"]::before {
    content: "";
    position: absolute;
    left: -15px;
    top: 50%;
    width: 9px;
    height: 1px;
    background: var(--signal);
    box-shadow: 0 0 6px var(--signal);
  }
  .tools-main > .toolnav { display: none; }
}
.toolnav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 32px;
}
.toolnav a {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  font: 500 var(--s-11) / 16px var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bone-dim);
  transition: background var(--t-fast) linear, color var(--t-fast) linear, border-color var(--t-fast) linear;
}
.toolnav a:hover {
  background: var(--bone);
  border-color: var(--bone);
  color: var(--void);
}

.tool {
  display: block;
  scroll-margin-top: 72px;
  transform: none;
}
.tool + .tool { margin-top: 24px; }
.tool::after { display: none; }
.tool h3 { margin: 0 0 20px; }
.tool-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}
.controls,
.output {
  display: grid;
  gap: 14px;
  align-content: start;
}

/* fields */
.fld { display: grid; gap: 6px; }
.fld-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
input[type="text"],
input[type="number"],
input[type="search"],
textarea,
select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-control);
  background: var(--well);
  color: var(--bone);
  font: 400 var(--s-13) / 20px var(--font-mono);
  caret-color: var(--signal);
}
textarea { resize: vertical; min-height: 96px; }
textarea[readonly] { color: var(--bone-dim); }
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 0;
  border-color: var(--signal-deep);
}
::placeholder { color: var(--dim); }
select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--mute) 50%),
    linear-gradient(135deg, var(--mute) 50%, transparent 50%);
  background-position: calc(100% - 16px) 50%, calc(100% - 11px) 50%;
  background-size: 5px 5px;
  background-repeat: no-repeat;
  padding-right: 32px;
}

input[type="range"] {
  width: 100%;
  height: 3px;
  appearance: none;
  background: var(--line-2);
  border-radius: 3px;
}
input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bone);
  cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border: 0;
  border-radius: 50%;
  background: var(--bone);
  cursor: pointer;
}
output { font-variant-numeric: tabular-nums; }

.checks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}
.checks label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: 400 var(--s-13) / 20px var(--font-mono);
  color: var(--bone-dim);
  cursor: pointer;
}
input[type="checkbox"] {
  width: 14px;
  height: 14px;
  margin: 0;
  accent-color: var(--signal);
}

/* buttons */
.btn {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--bone);
  border-radius: var(--r-control);
  background: var(--bone);
  color: var(--void);
  cursor: pointer;
  font: 500 var(--s-11) / 16px var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: background var(--t-fast) linear, color var(--t-fast) linear, transform var(--t-press) var(--ease);
}
.btn:hover { background: var(--bone-dim); border-color: var(--bone-dim); }
.btn:active { transform: scale(0.98); }
.btn.quiet {
  background: transparent;
  border-color: var(--line-2);
  color: var(--bone-dim);
}
.btn.quiet:hover {
  border-color: var(--bone-dim);
  color: var(--bone);
  background: transparent;
}
.btn[data-state="done"] {
  border-color: var(--signal);
  color: var(--signal);
  background: transparent;
}
.btn[disabled] { opacity: 0.5; cursor: default; }
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.seg {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-control);
  background: var(--well);
  width: fit-content;
}
.seg-btn {
  padding: 5px 12px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--mute);
  cursor: pointer;
  font: 500 var(--s-11) / 16px var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: background var(--t-fast) linear, color var(--t-fast) linear;
}
.seg-btn[aria-pressed="true"] {
  background: var(--raised);
  color: var(--bone);
}

/* outputs */
.out {
  display: block;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-control);
  background: var(--well);
  font: 400 var(--s-13) / 20px var(--font-mono);
  color: var(--bone);
  overflow-wrap: anywhere;
  min-height: 44px;
}
.out.big-out {
  font-size: var(--s-15);
  line-height: 24px;
}
.out:empty::before {
  content: attr(data-empty);
  color: var(--dim);
}
.hint {
  margin: 0;
  font: 400 var(--s-13) / 20px var(--font-mono);
  color: var(--dim);
}
.hint[data-tone="bad"] { color: #d66b66; }
.hint[data-tone="ok"] { color: var(--verified, #83b98b); }
.kv { display: grid; gap: 0; }
.kv .row { grid-template-columns: 96px minmax(0, 1fr); }
.kv .row:last-child { border-bottom: 1px solid var(--line); }
.kv dd {
  font: 400 var(--s-13) / 20px var(--font-mono);
  color: var(--bone);
  overflow-wrap: anywhere;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}
.kv dd .mini {
  flex: none;
  padding: 2px 8px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-chip);
  background: transparent;
  color: var(--dim);
  cursor: pointer;
  font: 500 var(--s-11) / 16px var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.kv dd .mini:hover { color: var(--bone); border-color: var(--bone-dim); }
.kv dd .mini[data-state="done"] { color: var(--signal); border-color: var(--signal); }
pre.out { margin: 0; white-space: pre-wrap; }
.kv .pre {
  margin: 0;
  font: inherit;
  white-space: pre;
  overflow-x: auto;
}
mark {
  background: var(--signal-deep);
  color: var(--bone);
  border-radius: 2px;
}
.diff span { display: block; }
.diff .da { color: #83b98b; }
.diff .dd { color: #d66b66; }
.diff .dn { color: var(--mute); }
.meter {
  height: 3px;
  border-radius: 3px;
  background: var(--line-2);
  overflow: hidden;
}
.meter-fill {
  height: 100%;
  width: 0;
  background: var(--signal);
  transition: width 900ms linear;
}
.dl-meta {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
}
.dl-meta img {
  width: 96px;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--r-chip);
  background: var(--well);
}
.dl-title {
  font: 500 var(--s-15) / 22px var(--font-sans);
  color: var(--bone);
  overflow-wrap: anywhere;
}
.swatch {
  height: 72px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-control);
  background: transparent;
}

/* QR */
#qr-canvas {
  display: block;
  width: 100%;
  max-width: 320px;
  height: auto;
  border-radius: var(--r-control);
  image-rendering: pixelated;
  background: var(--bone);
}
.drop {
  display: grid;
  place-items: center;
  min-height: 140px;
  padding: 20px;
  border: 1px dashed var(--line-2);
  border-radius: var(--r-control);
  background: var(--well);
  color: var(--mute);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--t-fast) linear, color var(--t-fast) linear;
}
.drop:hover,
.drop[data-over="true"] {
  border-color: var(--bone-dim);
  color: var(--bone);
}
#cam-video {
  width: 100%;
  border-radius: var(--r-control);
  background: var(--well);
}
#read-preview {
  display: block;
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  border-radius: var(--r-control);
  background: var(--well);
}

@media (max-width: 900px) {
  .tool-grid { grid-template-columns: 1fr; gap: 20px; }
}
@media (max-width: 640px) {
  .tools { padding-top: 72px; }
  .fld-row { grid-template-columns: 1fr; }
  .kv .row { grid-template-columns: 1fr; }
}