/* GratisGraph — control surface for a contact engraver.
   Design: the machine bed IS the interface. Brushed-metal neutrals, a
   machinist's surface-plate grid, one accent for the engraved line.
   Type: Space Grotesk (UI) + a true monospace for coordinates (instrument data). */

:root {
  --bed:        #15171a;   /* deep graphite — the work surface */
  --panel:      #1d2024;   /* raised panel */
  --panel-2:    #25282d;
  --line:       #34383f;   /* hairline rules / grid */
  --ink:        #e7e9ec;   /* primary text */
  --ink-dim:    #9aa0a8;   /* secondary */
  --ink-faint:  #5c626b;
  --cut:        #ff6a3d;   /* THE accent: the engraved line / active toolpath */
  --cut-dim:    #b34624;
  --rapid:      #3a6ea5;   /* pen-up rapid moves (cool, recedes) */
  --ctrl:       #2dd4bf;   /* manipulation handles — never used for the toolpath */
  --ok:         #4a9e6f;
  --warn:       #d9a441;
  --r: 7px;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --ui: "Space Grotesk", system-ui, -apple-system, sans-serif;
}

/* ── light theme (user-selectable) ── */
:root[data-theme="light"] {
  --bed:        #f4f5f7;   /* paper-white work surface */
  --panel:      #ffffff;
  --panel-2:    #eef0f3;
  --line:       #d4d8de;   /* hairline rules / grid */
  --ink:        #1a1d21;
  --ink-dim:    #5c626b;
  --ink-faint:  #9aa0a8;
  --cut:        #e8551f;   /* slightly deeper so it reads on white */
  --cut-dim:    #b34624;
  --rapid:      #3a6ea5;
  --ctrl:       #0d9488;
  --ok:         #2f8f5b;
  --warn:       #b8860b;
}
:root[data-theme="light"] #bed { background: #fbfbfc; }


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

body {
  background: var(--bed);
  color: var(--ink);
  font-family: var(--ui);
  font-size: 14px;
  line-height: 1.5;
  height: 100vh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

.app {
  display: grid;
  grid-template-columns: 320px 1fr;
  grid-template-rows: 52px 1fr;
  height: 100vh;
}

/* ── header ── */
header {
  grid-column: 1 / -1;
  display: flex; align-items: center; gap: 16px;
  padding: 0 18px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}
.brand { font-weight: 600; letter-spacing: -0.02em; font-size: 15px; cursor: pointer; background: none; border: none; color: var(--ink); font-family: var(--ui); padding: 0; }
.brand:hover b { color: #ff7d55; }
.brand b { color: var(--cut); }
.status-pill {
  margin-left: auto;
  display: flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 12px; color: var(--ink-dim);
  padding: 5px 11px; border: 1px solid var(--line); border-radius: 100px;
  user-select: none; -webkit-user-select: none;
}
.status-pill.cta { cursor: pointer; }   /* keep the clickable CTA feeling actionable */
.status-pill .pipe { color: var(--ink-faint); margin: 0 2px; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ink-faint); }
.dot.on { background: var(--ok); box-shadow: 0 0 8px var(--ok); }
.dot.busy { background: var(--warn); animation: pulse 1s infinite; }
@keyframes pulse { 50% { opacity: 0.3; } }

/* ── left rail ── */
.rail {
  background: var(--panel);
  border-right: 1px solid var(--line);
  padding: 18px;
  display: flex; flex-direction: column; gap: 18px;
  overflow-y: auto;
}
.section-label {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--ink-faint); margin-bottom: 9px;
}

.drop {
  border: 1.5px dashed var(--line); border-radius: var(--r);
  padding: 26px 16px; text-align: center; cursor: pointer;
  transition: border-color .15s, background .15s;
  color: var(--ink-dim);
}
.drop:hover, .drop.over { border-color: var(--cut); background: rgba(255,106,61,.05); color: var(--ink); }
.drop b { display: block; color: var(--ink); margin-bottom: 3px; }
.drop small { font-family: var(--mono); font-size: 11px; color: var(--ink-faint); }

.params { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.field label { display: block; font-size: 11px; color: var(--ink-dim); margin-bottom: 4px; }
.field input, .field select {
  width: 100%; background: var(--bed); color: var(--ink);
  border: 1px solid var(--line); border-radius: 5px;
  padding: 7px 9px; font-family: var(--mono); font-size: 13px;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--cut); }
.check { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-dim); cursor: pointer; }

button {
  font-family: var(--ui); font-size: 13px; font-weight: 500;
  border: 1px solid var(--line); border-radius: 6px;
  background: var(--panel-2); color: var(--ink);
  padding: 9px 13px; cursor: pointer; transition: all .12s;
}
button:hover:not(:disabled) { border-color: var(--ink-faint); }
button:disabled { opacity: .4; cursor: not-allowed; }
button.primary { background: var(--cut); border-color: var(--cut); color: #1a0d07; font-weight: 600; }
button.primary:hover:not(:disabled) { background: #ff7d55; }
button.ghost { background: transparent; }
.btn-row { display: flex; gap: 8px; }
.btn-row button { flex: 1; }

/* ── stage (the bed) ── */
.stage {
  position: relative;
  display: flex; flex-direction: column;
  background:
    radial-gradient(circle at 30% 20%, rgba(255,255,255,.015), transparent 60%),
    var(--bed);
}
.stage-head {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 18px; border-bottom: 1px solid var(--line);
  font-family: var(--mono); font-size: 12px; color: var(--ink-dim);
}
.stage-head .spacer { margin-left: auto; }
.bed-wrap { flex: 1; position: relative; display: grid; place-items: center; padding: 24px; min-height: 0; overflow: hidden; }
#bed {
  /* square canvas at ~75% of the smaller stage dimension, aspect-locked so the
     full bed + margin is always visible (no overflow). */
  width: min(75vh, 75%);
  aspect-ratio: 1 / 1;
  height: auto;
  background: #0e1013; border: 1px solid var(--line); border-radius: 14px;
}

.telemetry {
  display: flex; gap: 22px; padding: 11px 18px;
  border-top: 1px solid var(--line); font-family: var(--mono); font-size: 12px;
}
.telemetry .t { color: var(--ink-faint); }
.telemetry .v { color: var(--ink); }
.telemetry .axis { color: var(--cut); }

/* toast */
.toast-wrap { position: fixed; top: 68px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; gap: 10px; z-index: 50; align-items: center; }
.toast {
  background: var(--panel-2); border: 1px solid var(--line); border-left: 3px solid var(--cut);
  border-radius: 8px; padding: 14px 20px; font-size: 14px; line-height: 1.45;
  min-width: 340px; max-width: 520px;
  box-shadow: 0 6px 24px rgba(0,0,0,.28);
  animation: drop .2s ease;
}
.toast.ok { border-left-color: var(--ok); }
.toast.warn { border-left-color: var(--warn); }
@keyframes drop { from { opacity: 0; transform: translateY(-8px); } }

.muted { color: var(--ink-faint); }
.kv { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 12px; padding: 3px 0; }
.kv span:last-child { color: var(--ink); }

@media (prefers-reduced-motion: reduce) { * { animation: none !important; } }

/* theme toggle */
.theme-toggle {
  display: flex; align-items: center; gap: 6px;
  padding: 5px 10px; font-size: 12px; font-family: var(--mono);
  border: 1px solid var(--line); border-radius: 100px; background: transparent;
  color: var(--ink-dim); cursor: pointer;
}
.theme-toggle:hover { border-color: var(--ink-faint); color: var(--ink); }

/* unpaired machine pill: a pulsing call-to-action */
.status-pill.cta {
  cursor: pointer;
  border-color: var(--warn);
  color: var(--warn);
  animation: cta-pulse 1.6s ease-in-out infinite;
}
.status-pill.cta:hover { background: rgba(217,164,65,.08); }
@keyframes cta-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(217,164,65,.0); }
  50%      { box-shadow: 0 0 0 4px rgba(217,164,65,.12); }
}

/* paired confirmation row + rejected pill */
.pair-done { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-dim); }
.linklike { background: none; border: none; padding: 0; margin-left: auto; color: var(--cut); cursor: pointer; font-size: 12px; }
.linklike:hover { text-decoration: underline; }
.status-pill.cta.bad { border-color: #d9534f; color: #e0716d; }
.status-pill.cta.bad:hover { background: rgba(217,83,79,.08); }

/* ── pairing bar (anchored at the bottom, with the machine controls) ── */
.pair-bar { min-height: 34px; display: flex; align-items: center; }
.pair-input { display: flex; gap: 6px; align-items: stretch; width: 100%; }
.pair-input input {
  flex: 1; background: var(--bed); color: var(--ink);
  border: 1px solid var(--line); border-radius: 5px;
  padding: 7px 9px; font-family: var(--mono); font-size: 13px; letter-spacing: 0.18em;
  -webkit-text-security: disc; text-security: disc;   /* mask without being a password field (no browser save prompt) */
}
.pair-input input:focus { outline: none; border-color: var(--cut); }
.pair-input input::placeholder { letter-spacing: normal; color: var(--ink-faint); }
.pair-help {
  width: 34px; flex: 0 0 34px; padding: 0;
  display: grid; place-items: center;
  font-family: var(--mono); color: var(--ink-dim);
}
.pair-help:hover { color: var(--cut); border-color: var(--cut); }
.pair-bar .pair-done { width: 100%; }

/* true-scale (1:1) mode — bed sized in real mm; wrapper scrolls if larger than view.
   ~3.78px per mm is the CSS reference (96dpi); the bed is 114mm incl. margins. */
.bed-wrap.true-scale { place-items: start; overflow: auto; }
#bed.true-scale { width: 431px; height: 431px; }   /* 114mm * 3.78px/mm */

/* ── scene editor UI ── */
.object-list { list-style: none; margin: 10px 0 0; padding: 0; display: flex; flex-direction: column; gap: 3px; }
.obj-item {
  font-size: 13px; padding: 3px 4px 3px 9px; border-radius: 5px; cursor: pointer;
  color: var(--ink-dim); border: 1px solid transparent;
  display: flex; align-items: center; gap: 4px;
}
.obj-item:hover { background: var(--panel-2); }
.obj-item.sel { color: var(--ink); border-color: var(--cut); background: rgba(255,106,61,.06); }
.obj-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.obj-actions { display: flex; gap: 1px; flex: 0 0 auto; }
.obj-icon {
  width: 24px; height: 22px; padding: 0; border: 1px solid transparent; background: none;
  display: grid; place-items: center; color: var(--ink-faint); border-radius: 4px;
}
.obj-icon svg { width: 14px; height: 14px; display: block; }
.obj-actions .obj-icon:hover { color: var(--ink); background: var(--bed); border-color: transparent; }
.obj-icon.on { color: var(--rapid); }                 /* eye active = reference (matches the blue on the bed) */
.obj-actions .danger-icon:hover { color: #e0716d; }

.mode-label {
  font-family: var(--mono); font-size: 12px; padding: 3px 10px; border-radius: 100px;
  border: 1px solid var(--line);
}
.mode-label.edit { color: var(--ink-dim); }
.mode-label.prepare { color: var(--cut); border-color: var(--cut); }

#bed .bbox { transition: opacity .1s; }
#bed .obj { cursor: move; }

/* ── selection discipline ──
   The UI is chrome, not content: labels, grid graduations, status text and
   button text shouldn't be selectable. Inputs (and anything marked
   .selectable) opt back in. */
body, .status-pill, .section-label, .mode-label, .obj-item, .check,
.field label, .telemetry, .stage-head, #bed, #bed text, button, .pair-done {
  user-select: none; -webkit-user-select: none;
}
input, textarea, .selectable {
  user-select: text; -webkit-user-select: text;
}

/* ── tool strip + contextual settings ── */
.toolbar { display: flex; gap: 6px; }
.tool {
  width: 40px; height: 34px; padding: 0;
  display: grid; place-items: center;
}
.tool svg { width: 16px; height: 16px; display: block; }
.tool.active { border-color: var(--cut); color: var(--cut); }
.section-label-row { display: flex; justify-content: space-between; align-items: baseline; }
.section-label-row .section-label { margin-bottom: 0; }
.section-label-row + .object-list { margin-top: 9px; }
#settingsCard { border-top: 1px solid var(--line); padding-top: 14px; }

.obj-item.ref .obj-name { opacity: .55; font-style: italic; }

.obj-panel-head { display: flex; align-items: baseline; justify-content: space-between; }
.obj-panel-head .section-label { margin-bottom: 9px; }
.obj-type {
  font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: .06em;
  color: var(--ink-faint); border: 1px solid var(--line); border-radius: 100px; padding: 2px 8px;
}

/* ── legal & attribution ── */
.legal-link {
  margin-left: 16px; background: none; border: none; padding: 0;
  font-family: var(--mono); font-size: 11px; color: var(--ink-faint);
  cursor: pointer; text-decoration: underline; text-underline-offset: 2px;
}
.legal-link:hover { color: var(--ink-dim); }
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,.5);
  display: grid; place-items: center; z-index: 100; padding: 24px;
}
.modal {
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  max-width: 560px; width: 100%; max-height: 80vh; display: flex; flex-direction: column;
  box-shadow: 0 20px 60px rgba(0,0,0,.4);
}
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--line);
}
.modal-head h2 { font-size: 16px; font-weight: 600; }
.modal-close {
  background: none; border: none; color: var(--ink-dim); font-size: 22px;
  line-height: 1; cursor: pointer; padding: 0 4px;
}
.modal-close:hover { color: var(--ink); }
.modal-body { padding: 18px 20px; overflow-y: auto; font-size: 13px; line-height: 1.55; }
.modal-body h3 {
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--cut); margin: 16px 0 6px;
}
.modal-body h3:first-child { margin-top: 0; }
.modal-body p { color: var(--ink-dim); margin-bottom: 4px; }
.modal-body strong { color: var(--ink); font-weight: 500; }
.legal-fonts { list-style: none; padding: 0; margin: 6px 0; }
.legal-fonts li { color: var(--ink-dim); padding: 3px 0; border-bottom: 1px solid var(--line); }
.legal-fonts li:last-child { border-bottom: none; }
.modal-body code { font-family: var(--mono); font-size: 12px; color: var(--ink); }

/* small confirm dialog (delete, etc.) */
.modal-sm { max-width: 380px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 14px 20px; border-top: 1px solid var(--line); }
button.danger { background: #d9534f; border-color: #d9534f; color: #fff; font-weight: 600; }
button.danger:hover:not(:disabled) { background: #e0655f; border-color: #e0655f; }