/* The tool: write and read panels, the frame strip, tokens, callouts, consent.
   Motion only where data moves: a bit travelling, a seal drawing, a frame
   locking. Every transition names its properties; three curves total. */

.tool-grid { display: grid; grid-template-columns: 1fr; gap: 22px; }
@media (min-width: 980px) {
  .tool-grid { grid-template-columns: 280px minmax(0, 1fr) 300px; align-items: start; }
}

/* form column */
.form { display: flex; flex-direction: column; gap: 14px; }
.field label { display: block; font-size: 13px; font-weight: 500; color: var(--ink-2); margin-bottom: 5px; }
.field .hint { font-size: 12px; color: var(--muted); margin-top: 4px; }
.field textarea, .field input[type="text"], .field select {
  width: 100%; border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  background: var(--ground); padding: 9px 11px; transition: border-color var(--t-fast) var(--ease-snap);
}
.field textarea:focus, .field input:focus, .field select:focus { border-color: var(--accent); outline: none; }
.field textarea { min-height: 96px; resize: vertical; }
.seg { display: flex; border: 1px solid var(--line-strong); border-radius: var(--radius-sm); overflow: hidden; }
.seg button { flex: 1; border: 0; background: none; padding: 8px 6px; font-size: 13px; cursor: pointer; color: var(--muted); transition: background-color var(--t-fast) var(--ease-snap), color var(--t-fast) var(--ease-snap); }
.seg button[aria-pressed="true"] { background: var(--accent-soft); color: var(--ink); }
.seg button:hover { color: var(--ink); }
.seg button small { display: block; font-family: var(--font-mono); font-size: 11px; color: var(--muted); }
details.adv summary { cursor: pointer; font-size: 13px; color: var(--muted); }
details.adv .field { margin-top: 10px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid var(--line-strong); background: var(--ground); color: var(--ink);
  border-radius: var(--radius-sm); padding: 10px 14px; cursor: pointer; font-weight: 500;
  transition: background-color var(--t-fast) var(--ease-snap), border-color var(--t-fast) var(--ease-snap), transform var(--t-fast) var(--ease-snap);
}
.btn:hover { background: var(--surface); }
.btn:active { transform: scale(0.98); }
.btn.primary { background: var(--ink); color: var(--ground); border-color: var(--ink); }
.btn.primary:hover { background: var(--ink-2); }
.btn.wide { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }

/* model bar, shared by write and read */
.model-bar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding: 14px 0 0; }
.model-bar label { font-size: 13px; font-weight: 500; color: var(--ink-2); }
.model-bar select { border: 1px solid var(--line-strong); border-radius: var(--radius-sm); background: var(--ground); padding: 7px 10px; min-width: 260px; }
.model-bar .status { font-size: 12px; color: var(--muted); font-family: var(--font-mono); flex: 1 1 300px; }
.model-bar .status.warn { color: var(--warn); }

/* the read box: a textarea until you read, then the annotated words in place.
   white-space normal on the box itself, or the markup's indentation renders as blank lines */
.text[data-box], #read-box { padding: 0; white-space: normal; }
.text[data-box] textarea.paste, #read-box textarea.paste { padding: 20px 22px; min-height: 240px; }
.tokens { white-space: pre-wrap; overflow-wrap: anywhere; }
.text[data-box] .tokens, #read-box #read-text { padding: 20px 22px; min-height: 240px; cursor: text; }
.tok[data-seed] { color: var(--muted); }

/* progress: an expanding line and a number, nothing else */
.progress { display: none; align-items: center; gap: 10px; font-family: var(--font-mono); font-size: 12px; color: var(--muted); }
.progress.on { display: flex; }
.progress .line { flex: 1; height: 2px; background: var(--line); position: relative; overflow: hidden; }
.progress .line > i { position: absolute; inset: 0; background: var(--accent); transform-origin: left; transform: scaleX(0); transition: transform var(--t-move) var(--ease-out); }

/* text column */
.text-col { min-width: 0; }
.text-head { display: flex; align-items: baseline; gap: 12px; font-size: 12px; color: var(--muted); font-family: var(--font-mono); margin-bottom: 8px; min-height: 18px; }
.text-head .meter { margin-left: auto; }
.text {
  position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 22px; min-height: 240px; font-size: 17px; line-height: 1.75; white-space: pre-wrap; overflow-wrap: anywhere;
}
.text.empty::before { content: attr(data-empty); color: var(--muted); font-size: 15px; }
.text textarea.paste { display: block; width: 100%; min-height: 200px; border: 0; background: none; resize: vertical; line-height: inherit; font-size: inherit; font-family: inherit; color: inherit; }
.text textarea.paste:focus { outline: none; }

.tok { display: inline; border-bottom: 2px solid transparent; padding-bottom: 1px; opacity: 0; transition: opacity var(--t-fast) var(--ease-out), border-color var(--t-fast) var(--ease-out); }
.tok.in { opacity: 1; }
.tok.null { border-bottom-color: transparent; }
.tok.bit0, .tok.bit1 { border-bottom-color: var(--seg); background: color-mix(in srgb, var(--seg) 13%, transparent); border-radius: 2px 2px 0 0; }
.tok.bit0 { border-bottom-style: dotted; }        /* hollow: a 0 */
.tok.bit1 { border-bottom-style: solid; }         /* solid: a 1 */
.tok.dead { border-bottom-color: var(--warn); opacity: 0.55; }
.tok:hover { background: var(--accent-soft); }
.tok.pulse { animation: dim 320ms var(--ease-out); }
@keyframes dim { from { color: var(--muted); } to { color: inherit; } }

.tip {
  position: fixed; z-index: 30; pointer-events: none; background: var(--ink); color: var(--ground);
  font: 12px/1.35 var(--font-mono); padding: 6px 8px; border-radius: 5px; max-width: 260px;
  opacity: 0; transform: translateY(4px); transition: opacity var(--t-fast) var(--ease-snap), transform var(--t-fast) var(--ease-snap);
}
.tip.on { opacity: 1; transform: none; }

/* strip column: the frame in sections, one color each */
.strip-col { display: flex; flex-direction: column; gap: 12px; }
.strip-head { font-size: 12px; color: var(--muted); font-family: var(--font-mono); display: flex; justify-content: space-between; }
.strip { position: relative; padding: 6px 0 4px; }
.strip .segs { display: flex; flex-direction: column; gap: 12px; }
.strip .fseg { padding-left: 10px; border-left: 3px solid var(--seg); }
.strip .fseg-head { display: flex; justify-content: space-between; gap: 8px; font: 12px/1.3 var(--font-mono); color: var(--muted); margin-bottom: 5px; }
.strip .fseg-head b { color: var(--seg); font-weight: 600; }
.strip .row { display: flex; flex-wrap: wrap; gap: 2px; }
.strip .bit { width: 7px; height: 12px; background: var(--surface-2); border-radius: 2px; transition: background-color var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out), opacity var(--t-fast) var(--ease-out); }
.strip .bit.v0 { background: var(--seg); opacity: 0.45; }
.strip .bit.v1 { background: var(--seg); }
.strip .bit.spent { transform: scaleY(0.5); }
.strip .bit.next { box-shadow: 0 0 0 1px var(--seg); }
.strip .bit.dead { background: var(--warn); opacity: 1; }
.strip .fseg-note { font-size: 12.5px; line-height: 1.4; color: var(--muted); margin: 5px 0 0; }
.strip .seal { position: absolute; inset: 0 -8px -4px; border: 1.5px solid var(--ok); border-radius: 6px; pointer-events: none; opacity: 0;
  clip-path: inset(0 100% 0 0); }
.strip.sealed .seal { opacity: 1; animation: draw 420ms var(--ease-out) forwards; }
@keyframes draw { from { clip-path: inset(0 100% 0 0); } to { clip-path: inset(0 0 0 0); } }
.fly { position: fixed; z-index: 20; width: 10px; height: 4px; border-radius: 2px; background: var(--seg); pointer-events: none; }
.fly.b0 { opacity: 0.5; }
.strip-note { font-size: 13px; color: var(--ink-2); }
.strip-note b { color: var(--ink); }
.verdict { border-radius: var(--radius-sm); padding: 12px 14px; font-size: 14px; border: 1px solid var(--line); background: var(--surface); }
.verdict.ok { border-color: var(--ok); background: var(--ok-soft); }
.verdict.no { border-color: var(--line-strong); }
.verdict.warn { border-color: var(--warn); background: var(--warn-soft); }
.verdict .tag { font-family: var(--font-mono); font-size: 18px; display: block; margin-top: 4px; }

/* the section colors, on sections, cells, flying bits and the words that carry them */
:root, [data-kind=""], [data-seg=""] { --seg: var(--accent); }
[data-kind="sync"], [data-seg="sync"] { --seg: var(--seg-sync); }
[data-kind="header"], [data-seg="header"] { --seg: var(--seg-header); }
[data-kind="payload"], [data-seg="payload"] { --seg: var(--seg-payload); }
[data-kind="checksum"], [data-seg="checksum"] { --seg: var(--seg-checksum); }
[data-kind="parity"], [data-seg="parity"] { --seg: var(--seg-parity); }
[data-kind="woven"], [data-seg="woven"] { --seg: var(--seg-woven); }
[data-kind="read"] { --seg: var(--accent); }
[data-kind="outside"] { --seg: var(--muted); }

/* callouts: one card at a time, anchored near what it explains */
.callout {
  position: absolute; z-index: 25; max-width: 300px; pointer-events: auto; background: var(--ground); border: 1px solid var(--line-strong);
  border-left: 3px solid var(--accent); border-radius: var(--radius-sm); padding: 10px 12px 10px 12px; font-size: 13.5px; line-height: 1.45;
  box-shadow: 0 6px 20px rgba(0,0,0,0.08); opacity: 0; transform: translateY(4px);
  transition: opacity var(--t-move) var(--ease-out), transform var(--t-move) var(--ease-out);
}
.callout.on { opacity: 1; transform: none; }
.callout .row { display: flex; gap: 10px; margin-top: 8px; font-size: 12px; }
.callout button { background: none; border: 0; padding: 0; color: var(--muted); cursor: pointer; text-decoration: underline; }
.callout a { font-size: 12px; }

/* mark card */
.card { border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--ground); padding: 14px 16px; }
.card .foot { font-family: var(--font-mono); font-size: 12px; color: var(--muted); margin-top: 10px; border-top: 1px dashed var(--line); padding-top: 8px; white-space: pre-wrap; }

/* consent dialog */
dialog { border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--ground); color: var(--ink); padding: 22px 24px; max-width: 440px; width: calc(100% - 32px); }
dialog::backdrop { background: rgba(0,0,0,0.35); }
dialog h3 { font-size: 18px; margin-bottom: 8px; }
dialog p { color: var(--ink-2); font-size: 14px; }
dialog .btn-row { margin-top: 14px; justify-content: flex-end; }

/* break-it and lineup */
.breakit { display: flex; gap: 8px; flex-wrap: wrap; }
.lineup { font-size: 13px; }
.lineup table { border-collapse: collapse; width: 100%; }
.lineup td, .lineup th { padding: 5px 6px; border-bottom: 1px solid var(--line); text-align: left; }

/* cache panel */
.cache { font-size: 13px; color: var(--ink-2); }
.cache ul { list-style: none; padding: 0; margin: 6px 0 0; }
.cache li { display: flex; justify-content: space-between; gap: 8px; padding: 4px 0; border-bottom: 1px solid var(--line); }
.cache button { background: none; border: 0; color: var(--muted); cursor: pointer; text-decoration: underline; padding: 0; }

/* local tab */
.local pre { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 14px; font-size: 13px; }

.note { font-size: 13px; color: var(--muted); }
.note.warn { color: var(--warn); }