/* ===== Base ===== */
* { box-sizing: border-box; }
h1, h2, h3, h4, h5 { margin: 0; font-family: var(--font-display); font-weight: 700; text-wrap: balance; letter-spacing: -0.01em; }
p { margin: 0; }
ul, ol { margin: 0; padding-left: 1.15em; }
button { font: inherit; color: inherit; }
a { color: var(--tech); }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--surface-3); border-radius: 6px; border: 2px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-track { background: transparent; }

/* ===== App shell ===== */
.app { display: grid; grid-template-columns: 252px minmax(0, 1fr); height: 100%; }
.sidebar {
  display: flex; flex-direction: column; min-height: 0;
  background: var(--surface-0); border-right: 1px solid var(--line);
  padding-left: max(14px, env(safe-area-inset-left, 0px));
  padding-right: 14px;
}
.brand { display: flex; align-items: center; gap: 10px; padding-block: 16px 14px; border-bottom: 1px solid var(--line-soft); }
.brand-mark { color: var(--accent); display: flex; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.brand-text strong { font-family: var(--font-display); font-size: 13.5px; letter-spacing: .06em; }
.brand-text span { font-size: 10.5px; color: var(--fg-faint); letter-spacing: .04em; text-transform: uppercase; }
.sidebar-close { display: none; margin-left: auto; }

.nav { flex: 1; min-height: 0; overflow-y: auto; padding-block: 10px; display: flex; flex-direction: column; gap: 1px; }
.nav-group { font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--fg-faint); padding: 14px 8px 6px; font-family: var(--font-mono); }
.nav-item {
  display: flex; align-items: center; gap: 9px; width: 100%; text-align: left;
  background: none; border: 0; cursor: pointer; padding: 7px 9px; border-radius: var(--r-md);
  color: var(--fg-dim); font-size: 13px; position: relative;
  transition: background .13s, color .13s;
}
.nav-item:hover { background: var(--surface-2); color: var(--fg); }
.nav-item.active { background: var(--surface-2); color: var(--fg); font-weight: 600; }
.nav-item.active::before { content: ""; position: absolute; left: -14px; top: 6px; bottom: 6px; width: 3px; background: var(--accent); border-radius: 0 2px 2px 0; }
.nav-item .nav-ico { width: 17px; height: 17px; flex: none; opacity: .9; }
.nav-item .nav-dot { margin-left: auto; width: 6px; height: 6px; border-radius: 50%; background: var(--ok); flex: none; }
.nav-item .nav-count { margin-left: auto; font-family: var(--font-mono); font-size: 10.5px; color: var(--fg-faint); }

.sidebar-foot { border-top: 1px solid var(--line-soft); padding-block: 12px 14px; display: flex; flex-direction: column; gap: 10px; }
.prog-mini-top { display: flex; justify-content: space-between; font-size: 11px; color: var(--fg-dim); margin-bottom: 6px; }
.prog-mini-sub { font-size: 10.5px; color: var(--fg-faint); margin-top: 6px; }
.bar { height: 5px; background: var(--surface-3); border-radius: 3px; overflow: hidden; }
.bar-fill { height: 100%; background: linear-gradient(90deg, var(--accent), #ff9a4d); border-radius: 3px; transition: width .4s ease; }
.ghost-btn { background: none; border: 1px solid var(--line); border-radius: var(--r-md); padding: 6px 10px; font-size: 11.5px; color: var(--fg-dim); cursor: pointer; }
.ghost-btn:hover { border-color: var(--fg-faint); color: var(--fg); }

/* ===== Main ===== */
.main { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.topbar {
  display: flex; align-items: center; gap: 14px; border-bottom: 1px solid var(--line);
  background: var(--surface-0); flex: none;
  padding-block: 11px; padding-left: max(20px, env(safe-area-inset-left, 0px)); padding-right: max(20px, env(safe-area-inset-right, 0px));
}
.topbar-title { min-width: 0; flex: 1; }
.topbar-title h1 { font-size: 17px; }
.topbar-title p { font-size: 11.5px; color: var(--fg-faint); margin-top: 2px; }
.topbar-meta { display: flex; gap: 8px; flex: none; }
.meta-chip { display: flex; flex-direction: column; background: var(--surface-2); border: 1px solid var(--line-soft); border-radius: var(--r-md); padding: 5px 10px; line-height: 1.3; }
.meta-k { font-size: 9.5px; text-transform: uppercase; letter-spacing: .08em; color: var(--fg-faint); font-family: var(--font-mono); }
.meta-v { font-size: 12px; font-weight: 600; }
.icon-btn { background: none; border: 1px solid var(--line); border-radius: var(--r-md); width: 32px; height: 32px; cursor: pointer; color: var(--fg-dim); display: none; align-items: center; justify-content: center; flex: none; }
.icon-btn:hover { color: var(--fg); }

.view {
  flex: 1; min-height: 0; overflow-y: auto;
  padding-block: 14px 20px;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}
.view-inner { max-width: 1180px; display: flex; flex-direction: column; gap: 14px; }
.view-inner.wide { max-width: none; gap: 10px; }

.loading-state { display: flex; flex-direction: column; align-items: center; gap: 12px; padding-block: 80px; color: var(--fg-faint); }
.spinner { width: 24px; height: 24px; border: 2px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { * { animation-duration: .01ms !important; transition-duration: .01ms !important; } }

/* ===== Primitives ===== */
.card { background: var(--surface-1); border: 1px solid var(--line-soft); border-radius: var(--r-lg); }
.card-pad { padding: 16px 18px; }
.card-head { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--line-soft); }
.card-head h2, .card-head h3 { font-size: 13.5px; letter-spacing: .01em; }
.card-head .spacer { flex: 1; }
.eyebrow { font-family: var(--font-mono); font-size: 10px; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }
.eyebrow.tech { color: var(--tech); }
.lede { color: var(--fg-dim); font-size: 14px; line-height: 1.6; max-width: 68ch; }
.muted { color: var(--fg-faint); font-size: 12px; line-height: 1.55; }
.section-title { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.section-title h2 { font-size: 16px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  background: var(--accent); color: #fff; border: 1px solid transparent; border-radius: var(--r-md);
  padding: 8px 14px; font-size: 13px; font-weight: 600; cursor: pointer; font-family: var(--font-body);
  transition: filter .13s, transform .05s;
}
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.secondary { background: var(--surface-3); color: var(--fg); border-color: var(--line); }
.btn.outline { background: none; color: var(--fg-dim); border-color: var(--line); }
.btn.outline:hover { color: var(--fg); border-color: var(--fg-faint); }
.btn.tech { background: var(--tech); }
.btn.sm { padding: 5px 10px; font-size: 11.5px; }
.btn.block { width: 100%; }

.pill { display: inline-flex; align-items: center; gap: 5px; font-size: 10.5px; font-family: var(--font-mono); letter-spacing: .04em; padding: 2.5px 7px; border-radius: 99px; border: 1px solid var(--line); color: var(--fg-dim); white-space: nowrap; }
.pill.ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 45%, transparent); background: color-mix(in srgb, var(--ok) 12%, transparent); }
.pill.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 45%, transparent); background: color-mix(in srgb, var(--warn) 12%, transparent); }
.pill.crit { color: var(--crit); border-color: color-mix(in srgb, var(--crit) 45%, transparent); background: color-mix(in srgb, var(--crit) 12%, transparent); }
.pill.tech { color: var(--tech); border-color: color-mix(in srgb, var(--tech) 45%, transparent); background: var(--tech-soft); }
.pill.accent { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 45%, transparent); background: var(--accent-soft); }

.note { border-left: 3px solid var(--tech); background: var(--tech-soft); padding: 10px 13px; border-radius: 0 var(--r-md) var(--r-md) 0; font-size: 12.5px; line-height: 1.55; color: var(--fg-dim); }
.note strong { color: var(--fg); }
.note.warn { border-color: var(--warn); background: color-mix(in srgb, var(--warn) 11%, transparent); }
.note.crit { border-color: var(--crit); background: color-mix(in srgb, var(--crit) 11%, transparent); }
.note.sim { border-color: var(--violet); background: color-mix(in srgb, var(--violet) 12%, transparent); }

.grid { display: grid; gap: 14px; }
.g2 { grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }
.g3 { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.g4 { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.stat { background: var(--surface-1); border: 1px solid var(--line-soft); border-radius: var(--r-md); padding: 11px 13px; min-width: 0; }
.stat .k { font-size: 10px; text-transform: uppercase; letter-spacing: .09em; color: var(--fg-faint); font-family: var(--font-mono); }
.stat .v { font-family: var(--font-mono); font-size: 19px; font-weight: 600; margin-top: 3px; letter-spacing: -0.02em; }
.stat .s { font-size: 11px; color: var(--fg-faint); margin-top: 2px; }
.stat.accent .v { color: var(--accent); }
.stat.tech .v { color: var(--tech); }

table.data { width: 100%; border-collapse: collapse; font-size: 12.5px; }
table.data th, table.data td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
table.data th { font-size: 10.5px; text-transform: uppercase; letter-spacing: .07em; color: var(--fg-faint); font-family: var(--font-mono); font-weight: 500; white-space: nowrap; position: sticky; top: 0; background: var(--surface-1); z-index: 1; }
table.data th.sortable { cursor: pointer; user-select: none; }
table.data th.sortable:hover { color: var(--fg); }
table.data tbody tr:hover { background: var(--surface-2); }
table.data td.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.table-wrap { overflow-x: auto; border-radius: var(--r-md); }

/* ===== Slicer Lab ===== */
.slicer {
  display: grid; grid-template-columns: 184px minmax(0, 1fr) 320px;
  gap: 1px; background: var(--line-soft);
  border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden;
  min-height: 0; height: calc(100dvh - 108px);
}
.slicer > * { background: var(--surface-1); min-width: 0; }
.slicer-toolbar {
  grid-column: 1 / -1; display: flex; align-items: center; gap: 6px; padding: 8px 10px;
  background: var(--surface-0); flex-wrap: wrap;
}
.tool-tabs { display: flex; background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--r-md); padding: 2px; }
.tool-tab { background: none; border: 0; padding: 5px 14px; border-radius: 4px; font-size: 12px; cursor: pointer; color: var(--fg-dim); font-weight: 500; }
.tool-tab.active { background: var(--surface-3); color: var(--fg); box-shadow: inset 0 0 0 1px var(--line); }
.tool-sep { width: 1px; height: 22px; background: var(--line); margin-inline: 4px; }
.tool-btn { background: none; border: 1px solid transparent; border-radius: var(--r-sm); padding: 5px 9px; font-size: 11.5px; color: var(--fg-dim); cursor: pointer; display: inline-flex; gap: 5px; align-items: center; }
.tool-btn:hover { background: var(--surface-2); color: var(--fg); }
.tool-btn.on { background: var(--accent-soft); color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, transparent); }

.slicer-left { display: flex; flex-direction: column; min-height: 0; }
.panel-title { font-family: var(--font-mono); font-size: 9.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--fg-faint); padding: 10px 11px 6px; }
.model-list { display: flex; flex-direction: column; gap: 3px; padding: 0 7px 8px; overflow-y: auto; }
.model-item { display: flex; gap: 8px; align-items: center; background: none; border: 1px solid transparent; border-radius: var(--r-md); padding: 6px 7px; cursor: pointer; text-align: left; color: var(--fg-dim); }
.model-item:hover { background: var(--surface-2); }
.model-item.active { background: var(--surface-2); border-color: var(--line); color: var(--fg); }
.model-item svg { flex: none; }
.model-item .mi-name { font-size: 12px; line-height: 1.2; }
.model-item .mi-dim { font-size: 9.5px; font-family: var(--font-mono); color: var(--fg-faint); }

.slicer-stage { display: flex; flex-direction: column; min-height: 0; position: relative; background: var(--surface-0); }
.stage-canvas-wrap { flex: 1; min-height: 340px; position: relative; }
.stage-canvas-wrap canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }
.stage-overlay { position: absolute; left: 10px; top: 10px; display: flex; flex-direction: column; gap: 5px; pointer-events: none; }
.stage-badge { font-family: var(--font-mono); font-size: 10px; background: color-mix(in srgb, var(--surface-1) 85%, transparent); border: 1px solid var(--line); padding: 3px 7px; border-radius: var(--r-sm); color: var(--fg-dim); }
.stage-hint { position: absolute; right: 10px; bottom: 10px; font-size: 10px; color: var(--fg-faint); font-family: var(--font-mono); pointer-events: none; }
.stage-foot { border-top: 1px solid var(--line-soft); padding: 8px 12px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; background: var(--surface-1); }

.transform-row { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.tnum { display: flex; align-items: center; gap: 4px; background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--r-sm); padding: 2px 5px; }
.tnum label { font-size: 9.5px; font-family: var(--font-mono); color: var(--fg-faint); }
.tnum input { width: 46px; background: none; border: 0; color: var(--fg); font-family: var(--font-mono); font-size: 11.5px; padding: 2px; }
.tnum input:focus { outline: none; }

.layer-scrub { display: flex; align-items: center; gap: 10px; width: 100%; }
.layer-scrub input[type=range] { flex: 1; accent-color: var(--accent); }
.legend { display: flex; gap: 10px; flex-wrap: wrap; font-size: 10.5px; color: var(--fg-dim); }
.legend span { display: inline-flex; align-items: center; gap: 4px; }
.legend i { width: 9px; height: 9px; border-radius: 2px; display: inline-block; }

.slicer-right { display: flex; flex-direction: column; min-height: 0; }
.settings-head { padding: 7px 11px; border-bottom: 1px solid var(--line-soft); display: flex; flex-direction: column; gap: 6px; }
.right-scroll { flex: 1; min-height: 0; overflow-y: auto; display: flex; flex-direction: column; }
.right-sect { border-top: 1px solid var(--line-soft); }
.right-sect-head { display: flex; align-items: center; gap: 8px; padding: 8px 11px 5px; font-size: 12px; font-weight: 600; color: var(--fg); }
.search-box { display: flex; align-items: center; gap: 6px; background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--r-md); padding: 5px 8px; }
.search-box input { flex: 1; background: none; border: 0; color: var(--fg); font-size: 12px; min-width: 0; }
.search-box input:focus { outline: none; }
.profile-tabs { display: flex; gap: 4px; }
.profile-tab { flex: 1; background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--r-sm); padding: 5px 4px; font-size: 11px; cursor: pointer; color: var(--fg-dim); }
.profile-tab.active { background: var(--accent-soft); color: var(--accent); border-color: color-mix(in srgb, var(--accent) 45%, transparent); font-weight: 600; }

.settings-scroll { padding-bottom: 4px; }
.set-group { border-bottom: 1px solid var(--line-soft); }
.set-group-head { width: 100%; display: flex; align-items: center; gap: 7px; background: none; border: 0; padding: 6px 11px; cursor: pointer; color: var(--fg); font-size: 12px; font-weight: 600; text-align: left; }
.set-group-head:hover { background: var(--surface-2); }
.set-group-head .caret { font-size: 9px; color: var(--fg-faint); transition: transform .15s; }
.set-group.open .caret { transform: rotate(90deg); }
.set-group-body { display: none; padding: 2px 11px 10px; flex-direction: column; gap: 7px; }
.set-group.open .set-group-body { display: flex; }

.field { display: flex; flex-direction: column; gap: 3px; position: relative; }
.field-top { display: flex; align-items: baseline; gap: 6px; }
.field-label { font-size: 11.5px; color: var(--fg-dim); flex: 1; line-height: 1.3; }
.field-label .en { color: var(--fg-faint); font-size: 10px; font-family: var(--font-mono); }
.field-ctl { display: flex; align-items: center; gap: 7px; }
.field-ctl input[type=range] { flex: 1; accent-color: var(--accent); min-width: 0; }
.field-val { font-family: var(--font-mono); font-size: 11.5px; min-width: 58px; text-align: right; background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--r-sm); padding: 3px 5px; }
.field-val input { width: 100%; background: none; border: 0; color: var(--fg); font-family: var(--font-mono); font-size: 11.5px; text-align: right; }
.field-val input:focus { outline: none; }
.field select, .select { width: 100%; background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--r-sm); color: var(--fg); padding: 5px 7px; font-size: 12px; font-family: var(--font-body); }
.field .hint { font-size: 10.5px; color: var(--fg-faint); line-height: 1.45; }
.field.changed .field-label::after { content: "●"; color: var(--accent); font-size: 8px; margin-left: 4px; vertical-align: middle; }
.field.locked { opacity: .45; }
.switch { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.switch input { accent-color: var(--accent); width: 15px; height: 15px; }
.field.highlight { box-shadow: 0 0 0 2px var(--accent); border-radius: var(--r-sm); animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 2px var(--accent); } 50% { box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 35%, transparent); } }

.warn-area { border-top: 1px solid var(--line-soft); padding: 9px 11px; display: flex; flex-direction: column; gap: 6px; background: var(--surface-0); }
.warn-area:empty { display: none; }
.warn-item { display: flex; gap: 7px; font-size: 11.5px; line-height: 1.45; align-items: flex-start; }
.warn-item .wi { flex: none; font-size: 11px; margin-top: 1px; }
.warn-item.crit .wi { color: var(--crit); }
.warn-item.warn .wi { color: var(--warn); }
.warn-item.info .wi { color: var(--tech); }
.warn-item.ok .wi { color: var(--ok); }
.slice-bar { padding: 9px 11px; border-top: 1px solid var(--line-soft); display: flex; flex-direction: column; gap: 7px; background: var(--surface-0); }

.result-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(118px, 1fr)); gap: 8px; }
.hist-list { display: flex; flex-direction: column; gap: 5px; max-height: 220px; overflow-y: auto; }
.hist-item { display: flex; gap: 8px; align-items: baseline; font-size: 11.5px; padding: 5px 8px; background: var(--surface-2); border-radius: var(--r-sm); border: 1px solid var(--line-soft); }
.hist-item .ht { font-family: var(--font-mono); font-size: 10px; color: var(--fg-faint); flex: none; }

/* ===== Mission / guided mode ===== */
.mission { background: var(--surface-1); border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--line)); border-radius: var(--r-lg); overflow: hidden; }
.mission-head { background: var(--accent-soft); padding: 10px 14px; display: flex; align-items: center; gap: 10px; }
.mission-head h3 { font-size: 13px; color: var(--accent); }
.mission-steps { display: flex; flex-direction: column; }
.mstep { display: flex; gap: 10px; padding: 8px 14px; border-top: 1px solid var(--line-soft); font-size: 12.5px; align-items: flex-start; }
.mstep .mnum { width: 19px; height: 19px; border-radius: 50%; border: 1px solid var(--line); display: flex; align-items: center; justify-content: center; font-size: 10px; font-family: var(--font-mono); flex: none; color: var(--fg-faint); }
.mstep.done .mnum { background: var(--ok); border-color: var(--ok); color: #fff; }
.mstep.current { background: var(--surface-2); }
.mstep.current .mnum { border-color: var(--accent); color: var(--accent); }
.mstep .mtx { flex: 1; line-height: 1.45; }
.mstep .mhint { font-size: 11px; color: var(--fg-faint); margin-top: 3px; }

/* ===== Printer explorer / hotspots ===== */
.hotspot-wrap { position: relative; background: var(--surface-0); border: 1px solid var(--line-soft); border-radius: var(--r-md); overflow: hidden; }
.hotspot-wrap svg { display: block; width: 100%; height: auto; }
.hotspot {
  position: absolute; width: 22px; height: 22px; border-radius: 50%; transform: translate(-50%, -50%);
  background: color-mix(in srgb, var(--accent) 85%, transparent); color: #fff; border: 2px solid var(--surface-0);
  font-size: 10px; font-family: var(--font-mono); font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: transform .14s;
}
.hotspot:hover, .hotspot.active { transform: translate(-50%, -50%) scale(1.22); z-index: 2; }
.hotspot.active { background: var(--tech); }
.figure { display: flex; flex-direction: column; gap: 7px; }
.figcaption { font-size: 11px; color: var(--fg-faint); line-height: 1.5; }
.figcaption b { color: var(--fg-dim); font-weight: 600; }
.synthetic-tag { display: inline-flex; align-items: center; gap: 4px; font-family: var(--font-mono); font-size: 9.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--violet); border: 1px dashed color-mix(in srgb, var(--violet) 50%, transparent); padding: 1.5px 5px; border-radius: var(--r-sm); }

/* ===== Lessons ===== */
.lesson { display: flex; flex-direction: column; gap: 0; }
.lesson-block { border-top: 1px solid var(--line-soft); padding: 14px 0; display: flex; gap: 14px; }
.lesson-block:first-child { border-top: 0; padding-top: 4px; }
.lb-tag { flex: none; width: 104px; font-family: var(--font-mono); font-size: 9.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--fg-faint); padding-top: 3px; }
.lb-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 9px; font-size: 13.5px; line-height: 1.62; color: var(--fg-dim); }
.lb-body h4 { font-size: 14px; color: var(--fg); }
.lb-body strong { color: var(--fg); font-weight: 600; }
.lb-body code { font-family: var(--font-mono); font-size: 12px; background: var(--surface-2); padding: 1px 4px; border-radius: 3px; color: var(--accent); }
.lb-body ul li { margin-bottom: 4px; }

.module-card { display: flex; flex-direction: column; gap: 9px; padding: 14px; border: 1px solid var(--line-soft); border-radius: var(--r-lg); background: var(--surface-1); cursor: pointer; text-align: left; transition: border-color .14s, transform .08s; }
.module-card:hover { border-color: var(--accent); }
.module-card:active { transform: translateY(1px); }
.module-card .mc-top { display: flex; align-items: center; gap: 8px; }
.module-card h3 { font-size: 14px; }
.module-card p { font-size: 12px; color: var(--fg-faint); line-height: 1.5; }
.module-card.locked-soft { opacity: .78; }

/* ===== Quiz ===== */
.quiz { display: flex; flex-direction: column; gap: 12px; }
.q-stem { font-size: 13.5px; line-height: 1.6; }
.q-opts { display: flex; flex-direction: column; gap: 7px; }
.q-opt { display: flex; gap: 9px; align-items: flex-start; text-align: left; background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--r-md); padding: 9px 11px; cursor: pointer; font-size: 12.5px; line-height: 1.5; color: var(--fg-dim); }
.q-opt:hover:not(:disabled) { border-color: var(--fg-faint); color: var(--fg); }
.q-opt .qk { font-family: var(--font-mono); font-size: 10.5px; width: 17px; height: 17px; border: 1px solid var(--line); border-radius: 4px; display: flex; align-items: center; justify-content: center; flex: none; margin-top: 1px; }
.q-opt.correct { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 14%, transparent); color: var(--fg); }
.q-opt.wrong { border-color: var(--crit); background: color-mix(in srgb, var(--crit) 14%, transparent); color: var(--fg); }
.q-opt:disabled { cursor: default; }
.q-feedback { font-size: 12.5px; line-height: 1.6; padding: 10px 12px; border-radius: var(--r-md); }
.q-feedback.ok { background: color-mix(in srgb, var(--ok) 12%, transparent); border-left: 3px solid var(--ok); }
.q-feedback.no { background: color-mix(in srgb, var(--crit) 12%, transparent); border-left: 3px solid var(--crit); }
.q-progress { display: flex; gap: 4px; }
.q-progress i { flex: 1; height: 3px; background: var(--surface-3); border-radius: 2px; }
.q-progress i.done { background: var(--ok); }
.q-progress i.fail { background: var(--crit); }
.q-progress i.now { background: var(--accent); }

/* ===== Printer control (device) ===== */
.device-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 10px; }
.device-fit { height: calc(100dvh - 108px); display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 10px; overflow: hidden; }
.device-col-left, .device-col-right { min-height: 0; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; padding-right: 2px; }
.device-col-right .card:last-child { flex: 1; min-height: 0; display: flex; flex-direction: column; }
@media (max-width: 900px) { .device-fit { height: auto; display: flex; flex-direction: column; overflow: visible; } .device-col-left, .device-col-right { overflow: visible; } }
.readout { display: flex; align-items: baseline; gap: 6px; font-family: var(--font-mono); }
.readout .big { font-size: 26px; font-weight: 600; letter-spacing: -.02em; }
.readout .tgt { font-size: 12px; color: var(--fg-faint); }
.temp-graph { width: 100%; height: 72px; display: block; }
.jog-pad { display: grid; grid-template-columns: repeat(3, 38px); grid-template-rows: repeat(3, 32px); gap: 4px; justify-content: center; }
.jog-pad button { background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--r-sm); cursor: pointer; font-size: 12px; color: var(--fg-dim); }
.jog-pad button:hover { border-color: var(--accent); color: var(--fg); }
.mesh-grid { display: grid; gap: 3px; }
.mesh-cell { aspect-ratio: 1; border-radius: 3px; display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 9px; color: #0d0f11; font-weight: 600; }
.console { background: #0f1113; border: 1px solid var(--line); border-radius: var(--r-md); padding: 8px 10px; font-family: var(--font-mono); font-size: 11px; line-height: 1.6; height: 150px; overflow-y: auto; color: #9fb3c0; }
.console .c-cmd { color: var(--accent); }
.console .c-ok { color: var(--ok); }
.console .c-err { color: var(--crit); }
:root[data-theme="light"] .console, :root:not([data-theme="dark"]) .console { }

/* ===== Defect library ===== */
.defect-card { display: flex; flex-direction: column; border: 1px solid var(--line-soft); border-radius: var(--r-lg); overflow: hidden; background: var(--surface-1); cursor: pointer; transition: border-color .14s; }
.defect-card:hover { border-color: var(--accent); }
.defect-card .dc-art { background: var(--surface-0); border-bottom: 1px solid var(--line-soft); }
.defect-card .dc-art svg { display: block; width: 100%; height: auto; }
.defect-card .dc-body { padding: 10px 12px; display: flex; flex-direction: column; gap: 5px; }
.defect-card h4 { font-size: 13px; }
.defect-card p { font-size: 11.5px; color: var(--fg-faint); line-height: 1.45; }

/* ===== Modal ===== */
/* garante que o atributo hidden feche o modal/scrim (a classe .modal-root tem display:flex,
   que sem isto venceria o [hidden] do navegador e deixava a tela escura e travada) */
[hidden] { display: none !important; }
.modal-root { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; background: rgba(8,10,12,.72); padding: max(16px, env(safe-area-inset-left, 0px)) 16px; overflow-y: auto; }
.modal {
  background: var(--surface-1); border: 1px solid var(--line); border-radius: var(--r-lg);
  width: min(760px, 100%); max-height: min(88vh, 900px); display: flex; flex-direction: column; overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,.45);
}
.modal.wide { width: min(1000px, 100%); }
.modal-head { display: flex; align-items: center; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--line-soft); flex: none; }
.modal-head h2 { font-size: 16px; flex: 1; }
.modal-body { padding: 16px 18px 22px; overflow-y: auto; display: flex; flex-direction: column; gap: 14px; }
.modal-foot { padding: 12px 18px; border-top: 1px solid var(--line-soft); display: flex; gap: 8px; justify-content: flex-end; flex: none; background: var(--surface-0); flex-wrap: wrap; }

/* ===== Welcome ===== */
.welcome { text-align: left; }
.welcome-hero { display: flex; flex-direction: column; gap: 8px; padding-bottom: 6px; }
.welcome-hero h2 { font-size: 26px; letter-spacing: -.02em; }
.track-opts { display: grid; gap: 10px; }
.track-opt { display: flex; gap: 12px; align-items: flex-start; text-align: left; background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--r-md); padding: 13px 14px; cursor: pointer; }
.track-opt:hover, .track-opt.sel { border-color: var(--accent); background: var(--accent-soft); }
.track-opt .to-ico { flex: none; color: var(--accent); }
.track-opt strong { display: block; font-size: 13.5px; margin-bottom: 3px; }
.track-opt span { font-size: 11.5px; color: var(--fg-dim); line-height: 1.5; }
.demo-strip { background: var(--surface-0); border: 1px solid var(--line-soft); border-radius: var(--r-md); padding: 13px; display: flex; flex-direction: column; gap: 10px; }

/* ===== Toast ===== */
.toast-root { position: fixed; right: max(16px, env(safe-area-inset-right, 0px)); bottom: max(16px, env(safe-area-inset-bottom, 0px)); display: flex; flex-direction: column; gap: 8px; z-index: 200; pointer-events: none; }
.toast { background: var(--surface-3); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: var(--r-md); padding: 9px 13px; font-size: 12.5px; max-width: 330px; box-shadow: 0 8px 24px rgba(0,0,0,.3); animation: slideIn .22s ease; }
.toast.ok { border-left-color: var(--ok); }
.toast.crit { border-left-color: var(--crit); }
@keyframes slideIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.scrim { position: fixed; inset: 0; background: rgba(8,10,12,.6); z-index: 40; }

/* ===== Charts ===== */
.chart-wrap { width: 100%; overflow-x: auto; }
.chart-wrap svg { display: block; }

/* ===== First layer sim ===== */
.fl-canvas { width: 100%; max-width: 420px; aspect-ratio: 1.6; border: 1px solid var(--line); border-radius: var(--r-md); display: block; background: var(--surface-0); }
.scenario-list { display: flex; flex-direction: column; gap: 6px; }
.scenario-btn { text-align: left; background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--r-md); padding: 8px 11px; font-size: 12px; cursor: pointer; color: var(--fg-dim); }
.scenario-btn:hover { border-color: var(--fg-faint); color: var(--fg); }
.scenario-btn.active { border-color: var(--accent); color: var(--fg); background: var(--accent-soft); }

/* ===== Responsive ===== */
@media (max-width: 1140px) {
  .slicer { grid-template-columns: 160px minmax(0, 1fr) 290px; }
}
@media (max-width: 960px) {
  .app { grid-template-columns: minmax(0, 1fr); }
  .sidebar {
    position: fixed; z-index: 50; left: 0; top: 0; bottom: 0; width: 262px;
    transform: translateX(-100%); transition: transform .2s ease;
    padding-top: env(safe-area-inset-top, 0px); padding-bottom: env(safe-area-inset-bottom, 0px);
  }
  .app.nav-open .sidebar { transform: none; }
  .sidebar-close, .menu-btn { display: flex; }
  .slicer { grid-template-columns: minmax(0, 1fr); min-height: 0; height: auto; }
  .slicer-left { order: 2; }
  .slicer-stage { order: 1; }
  .slicer-right { order: 3; max-height: none; }
  .model-list { flex-direction: row; overflow-x: auto; }
  .model-item { flex: none; width: 150px; }
  .topbar-meta { display: none; }
  .lesson-block { flex-direction: column; gap: 6px; }
  .lb-tag { width: auto; }
}
@media (max-width: 520px) {
  .view { padding-block: 16px 40px; }
  .stat .v { font-size: 17px; }
  .modal-body { padding: 14px; }
}