/* =========================================================================
   Humanize — editorial / manuscript design
   ========================================================================= */

:root {
  --paper: #fbf9f3;
  --paper-warm: #f5f2e9;
  --paper-deep: #efece2;
  --ink: #1a1a1a;
  --ink-soft: #2c2c2c;
  --muted: #6f6f6f;
  --muted-soft: #9a9a92;
  --rule: #e2dfd4;
  --rule-soft: #ebe8dd;
  --accent: #a8281a;          /* deeper, more confident editorial red */
  --accent-soft: #8e2014;
  --hi: #ffeb99;               /* highlighter yellow */
  --hi-soft: #fff5c2;
  --del: #fadcdc;
  --good: #2f6f44;             /* moss green for "AI signal down" */

  --serif: "Lora", "Iowan Old Style", "Charter", "Georgia", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --mono:  "JetBrains Mono", "iA Writer Mono", ui-monospace, monospace;

  --max: 720px;
  --pad: 32px;
}

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

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--hi); color: var(--ink); }

button { font-family: inherit; }

/* ================================================================
   Top bar
   ================================================================ */
.bar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.bar-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 16px var(--pad);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}
.masthead {
  display: flex;
  align-items: baseline;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}
.mast-name {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.01em;
}
.mast-sub {
  font-family: var(--serif);
  font-style: italic;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.01em;
}
@media (max-width: 540px) { .mast-sub { display: none; } }

.bar-actions { display: flex; gap: 4px; }
.bar-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 12.5px;
  font-weight: 500;
  padding: 6px 11px;
  cursor: pointer;
  border-radius: 6px;
  transition: color .15s, background .15s;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  letter-spacing: 0.01em;
}
.bar-btn:hover { color: var(--ink); background: var(--paper-warm); }
.bar-btn .dot {
  width: 6px; height: 6px;
  border: 1px solid var(--muted-soft);
  border-radius: 50%;
  display: inline-block;
}
.bar-btn .dot.on {
  background: var(--accent);
  border-color: var(--accent);
}

/* ================================================================
   The "sheet" — the manuscript
   ================================================================ */
main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 56px var(--pad) 100px;
}

.sheet { position: relative; margin-bottom: 28px; }

.sheet-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  height: 22px;
}
.label-stack { display: flex; align-items: center; }
.label {
  font-family: var(--sans);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted-soft);
}
body[data-mode="input"]    .label-output,
body[data-mode="input"]    .label-original,
body[data-mode="output"]   .label-input,
body[data-mode="output"]   .label-original,
body[data-mode="markup"]   .label-input,
body[data-mode="markup"]   .label-original,
body[data-mode="original"] .label-input,
body[data-mode="original"] .label-output {
  display: none;
}
body[data-mode="markup"] .label-output::after {
  content: " · markup";
  color: var(--accent);
  font-weight: 700;
}

.sheet-tools { display: flex; gap: 6px; }
.tool {
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--muted);
  font-family: var(--sans);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  padding: 4px 10px 4px 8px;
  cursor: pointer;
  border-radius: 999px;
  display: none;
  align-items: center;
  gap: 5px;
  transition: color .12s, border-color .12s, background .12s;
}
body[data-mode="output"]   .tool,
body[data-mode="markup"]   .tool,
body[data-mode="original"] .tool { display: inline-flex; }
.tool svg { opacity: 0.7; }
.tool:hover { color: var(--ink); border-color: var(--ink); }
.tool:hover svg { opacity: 1; }
.tool.active {
  color: var(--paper);
  background: var(--ink);
  border-color: var(--ink);
}
.tool.active svg { opacity: 1; }

/* Editor faces — one per mode, never visible simultaneously */
.editor {
  width: 100%;
  min-height: 320px;
  background: transparent;
  border: 0;
  outline: 0;
  resize: vertical;
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.72;
  color: var(--ink);
  padding: 0;
  letter-spacing: 0.005em;
}
.editor::placeholder {
  color: var(--muted-soft);
  font-style: italic;
}
.editor.output, .editor.markup, .editor.original {
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 200px;
}
.editor.original {
  color: var(--muted);
  font-style: italic;
}

body[data-mode="input"]    #draft    { display: block; }
body[data-mode="input"]    #output   { display: none; }
body[data-mode="input"]    #markup   { display: none; }
body[data-mode="input"]    #original { display: none; }

body[data-mode="output"]   #draft    { display: none; }
body[data-mode="output"]   #output   { display: block; }
body[data-mode="output"]   #markup   { display: none; }
body[data-mode="output"]   #original { display: none; }

body[data-mode="markup"]   #draft    { display: none; }
body[data-mode="markup"]   #output   { display: none; }
body[data-mode="markup"]   #markup   { display: block; }
body[data-mode="markup"]   #original { display: none; }

body[data-mode="original"] #draft    { display: none; }
body[data-mode="original"] #output   { display: none; }
body[data-mode="original"] #markup   { display: none; }
body[data-mode="original"] #original { display: block; }

/* Markup styling — the editorial markup look */
.markup .ins {
  background: var(--hi);
  border-radius: 2px;
  padding: 0 2px;
  box-shadow: inset 0 -2px 0 rgba(0,0,0,0.04);
}
.markup .del {
  color: var(--accent-soft);
  text-decoration: line-through;
  text-decoration-color: rgba(168,40,26,0.6);
  text-decoration-thickness: 1.5px;
  background: var(--del);
  border-radius: 2px;
  padding: 0 2px;
  opacity: 0.85;
}
.markup .eq { color: var(--ink); }

/* ================================================================
   Sheet footer (meter + action)
   ================================================================ */
.sheet-foot {
  margin-top: 30px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.meter {
  font-family: var(--sans);
  font-size: 12.5px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}
.meter-cell { display: none; align-items: center; gap: 6px; }
#word-count { display: inline-flex; }
body[data-mode="output"]   #ai-meter,
body[data-mode="output"]   #time-meter,
body[data-mode="markup"]   #ai-meter,
body[data-mode="markup"]   #time-meter,
body[data-mode="original"] #ai-meter,
body[data-mode="original"] #time-meter { display: inline-flex; }
.meter-cell + .meter-cell::before {
  content: "";
  display: inline-block;
  width: 1px;
  height: 11px;
  background: var(--rule);
  margin-right: 8px;
}
.ai-meter strong {
  color: var(--ink);
  font-weight: 600;
}
.ai-meter.good strong { color: var(--good); }
.ai-meter.bad  strong { color: var(--accent); }
.ai-meter .arrow {
  color: var(--muted-soft);
  margin: 0 3px;
  font-weight: 400;
}

.run-btn {
  position: relative;
  background: var(--accent);
  color: var(--paper);
  border: 0;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.02em;
  padding: 9px 18px;
  border-radius: 999px;
  cursor: pointer;
  transition: background .15s, transform .08s;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-width: 128px;
  justify-content: center;
}
.run-btn:hover { background: var(--accent-soft); }
.run-btn:active { transform: translateY(1px); }
.run-btn:disabled { opacity: 0.55; cursor: not-allowed; }
.run-btn .run-icon { transition: transform .2s; display: inline-block; }
.run-btn:hover .run-icon { transform: translateX(2px); }
.run-btn .run-spin {
  width: 13px; height: 13px;
  border: 2px solid currentColor;
  border-bottom-color: transparent;
  border-radius: 50%;
  animation: spin .75s linear infinite;
  display: none;
}
.run-btn.loading .run-icon { display: none; }
.run-btn.loading .run-spin { display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ================================================================
   After-actions (output / markup / original mode only)
   ================================================================ */
.after-actions {
  display: none;
  gap: 22px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--rule-soft);
}
body[data-mode="output"]   .after-actions,
body[data-mode="markup"]   .after-actions,
body[data-mode="original"] .after-actions { display: flex; }

.link {
  background: transparent;
  border: 0;
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
  padding: 0;
  border-bottom: 1px solid transparent;
  transition: color .12s, border-color .12s;
  letter-spacing: 0.01em;
}
.link:hover { color: var(--ink); border-bottom-color: var(--ink); }
.link.primary { color: var(--accent); font-weight: 600; }
.link.primary:hover { color: var(--accent-soft); border-bottom-color: var(--accent-soft); }

/* Show tools only when output exists */
body[data-mode="output"]   #markup-toggle,
body[data-mode="output"]   #flip-view,
body[data-mode="markup"]   #markup-toggle,
body[data-mode="markup"]   #flip-view,
body[data-mode="original"] #markup-toggle,
body[data-mode="original"] #flip-view {
  display: inline-flex;
}

/* ================================================================
   Dialogs
   ================================================================ */
.dlg {
  border: 0;
  padding: 0;
  background: transparent;
  max-width: 580px;
  width: 92vw;
}
.dlg::backdrop {
  background: rgba(26,26,26,0.4);
  backdrop-filter: blur(2px);
}
.dlg-inner {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 28px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.16);
}
.dlg-inner header h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 22px;
  margin: 0 0 6px;
  letter-spacing: -0.01em;
}
.dlg-inner header p {
  margin: 0 0 18px;
  font-family: var(--serif);
  color: var(--muted);
  font-size: 14.5px;
  font-style: italic;
  line-height: 1.55;
}
.dlg-text {
  width: 100%;
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 12px 14px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-soft);
  resize: vertical;
  outline: none;
  min-height: 140px;
}
.dlg-text:focus { border-color: var(--ink); }
.dlg-text.small { min-height: 80px; }
.dlg-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 14px;
}
.dlg-actions { display: flex; gap: 18px; align-items: center; }
.muted { color: var(--muted); font-size: 12.5px; font-family: var(--sans); }
.voice-json {
  margin-top: 14px;
  padding: 12px;
  background: var(--paper-warm);
  border: 1px solid var(--rule);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 11.5px;
  line-height: 1.5;
  max-height: 220px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--ink-soft);
}

/* ================================================================
   Toast
   ================================================================ */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--paper);
  padding: 10px 18px;
  border-radius: 999px;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
  box-shadow: 0 8px 24px rgba(0,0,0,0.18);
  z-index: 100;
  animation: toastIn .22s ease;
}
.toast.error { background: var(--accent); }
@keyframes toastIn {
  from { opacity: 0; transform: translate(-50%, 6px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}

/* ================================================================
   Animations
   ================================================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
#output, #markup, #original {
  animation: fadeIn .35s ease;
}

/* ================================================================
   Responsive
   ================================================================ */
@media (max-width: 640px) {
  :root { --pad: 22px; }
  body { font-size: 16px; }
  .editor { font-size: 18px; }
  .bar-inner { padding: 13px var(--pad); }
  main { padding: 32px var(--pad) 80px; }
  .run-btn { min-width: 120px; padding: 8px 16px; }
  .meter { font-size: 12px; gap: 10px; }
  .meter-cell + .meter-cell::before { margin-right: 6px; }
  .sheet-foot { gap: 12px; }
  .after-actions { gap: 18px; flex-wrap: wrap; }
}