/* ─── Reset ─────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Palette — toio brand */
  --bg:          #F0F2F7;
  --surface:     #FFFFFF;
  --surface2:    #F5F7FA;
  --surface3:    #ECEEF4;
  --border:      #DDE1EA;
  --border-light:#ECEEF4;

  /* Brand — toio blue */
  --primary:        #0078FF;
  --primary-h:      #0062D6;
  --primary-light:  #E8F1FF;
  --success:        #18B86B;
  --success-light:  #E6FAF1;
  --danger:         #E8354A;
  --danger-light:   #FFF0F1;
  --warning:        #F59E0B;

  /* Cube/category tints */
  --c-motion:  #0078FF;
  --c-led:     #7C3AED;
  --c-sound:   #059669;
  --c-ctrl:    #D97706;
  --c-sensor:  #DC2626;
  --c-out:     #0891B2;

  /* Text */
  --text:       #1A1C2A;
  --text-muted: #6B7280;
  --text-light: #9CA3AF;

  /* Shadows */
  --sh-xs: 0 1px 2px rgba(0,0,0,.05);
  --sh-sm: 0 2px 6px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.04);
  --sh-md: 0 4px 16px rgba(0,0,0,.09), 0 2px 4px rgba(0,0,0,.05);
  --sh-lg: 0 8px 32px rgba(0,0,0,.12), 0 4px 8px rgba(0,0,0,.07);
  --sh-float: 0 16px 48px rgba(0,0,0,.15), 0 6px 16px rgba(0,0,0,.10);

  /* Sizing */
  --header-h:  50px;
  --radius:    8px;
  --radius-sm: 5px;
  --divider:   5px;

  /* Resizable layout (controlled by JS) */
  --col-split:    440px;
  --row-split:    320px;
}

html, body {
  height: 100%;
  overflow: hidden;
  font-family: 'Inter', 'Hiragino Sans', 'Yu Gothic UI', 'Meiryo', system-ui, sans-serif;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}
body { background: var(--bg); color: var(--text); }

/* ─── App shell ─────────────────────────────────────────────────────────────── */
#app { display: flex; flex-direction: column; height: 100vh; }

/* ─── Header ────────────────────────────────────────────────────────────────── */
#header {
  height: var(--header-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 10px;
  flex-shrink: 0;
  box-shadow: var(--sh-xs);
  z-index: 50;
}

#logo {
  display: flex; align-items: center; gap: 8px;
  font-size: .95rem; font-weight: 800; color: var(--text);
  letter-spacing: -0.3px; margin-right: 4px; user-select: none;
}
.logo-icon {
  width: 28px; height: 28px; border-radius: 7px;
  background: var(--primary);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
/* toio SVG logo mark */
.logo-icon svg { width: 18px; height: 18px; }
.logo-text { color: var(--text); }
.logo-text span { color: var(--primary); }
.logo-toio-link {
  color: var(--primary);
  text-decoration: none;
  transition: opacity .15s;
}
.logo-toio-link:hover { opacity: .75; text-decoration: underline; }
/* Home link wrapping the logo icon */
.logo-home-link {
  display: flex; align-items: center;
  text-decoration: none; border-radius: 7px;
  transition: opacity .15s;
  flex-shrink: 0;
}
.logo-home-link:hover { opacity: .75; }
/* GitHub OSS icon link */
.logo-github-link {
  display: flex; align-items: center;
  color: var(--text-muted);
  opacity: .55;
  text-decoration: none;
  transition: opacity .15s, color .15s;
  flex-shrink: 0;
  margin-left: 2px;
}
.logo-github-link:hover { opacity: 1; color: var(--text); }
.logo-github-link svg { width: 15px; height: 15px; }

/* Cube list */
#cube-list {
  display: flex; align-items: center; gap: 6px; flex: 1;
}

.cube-badge {
  display: flex; align-items: center; gap: 5px;
  padding: 4px 10px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: .74rem; font-weight: 600;
  color: var(--text-muted);
  cursor: pointer; transition: all .15s;
}
.cube-badge:hover { border-color: var(--primary); color: var(--primary); }
.cube-badge.connected { background: var(--success-light); border-color: var(--success); color: #0A6B44; }
.cube-badge .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--border);
}
.cube-badge.connected .dot { background: var(--success); }

#btn-add-cube {
  display: flex; align-items: center; gap: 4px;
  padding: 6px 13px;
  background: var(--primary);
  color: white;
  border: none; border-radius: 20px;
  font-size: .75rem; font-weight: 700;
  cursor: pointer; transition: background .15s;
  letter-spacing: .1px;
}
#btn-add-cube:hover { background: var(--primary-h); }

/* Language selector */
#lang-select {
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text-muted);
  font-size: .73rem;
  font-family: inherit;
  cursor: pointer;
}
#lang-select:hover { border-color: var(--primary); color: var(--text); }

/* Globe icon next to language selector */
.lang-globe { font-size: 1rem; opacity: 0.7; cursor: default; }

/* Project name input */
#project-name {
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .75rem; font-weight: 600;
  color: var(--text);
  background: var(--surface2);
  min-width: 100px; max-width: 180px;
  font-family: inherit;
}
#project-name:focus { outline: none; border-color: var(--primary); background: var(--surface); }

/* Run controls row */
#run-controls { display: flex; gap: 6px; margin-left: auto; align-items: center; flex-wrap: wrap; }

/* Secondary header items (theme/lang/project/save/load) — grouped for hamburger control */
#header-extra { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }

/* Hamburger button — hidden on desktop, shown on mobile via @media */
.hamburger-btn { display: none !important; }

/* ─── Main grid ─────────────────────────────────────────────────────────────── */
#main {
  flex: 1;
  display: flex;
  overflow: hidden;
  background: var(--bg);
  gap: 0;
}

/* Workspace panel (left) */
#workspace-panel {
  display: flex; flex-direction: column;
  width: calc(100% - var(--col-split) - var(--divider));
  min-width: 300px;
  flex-shrink: 0;
  background: var(--surface);
}

/* ws-views-row: default is column (tab view), becomes row in split mode */
.ws-views-row {
  display: flex; flex-direction: column; flex: 1; min-height: 0; overflow: hidden;
}

/* Split view — show both blocks and code side by side */
#workspace-panel.ws-split .ws-views-row {
  flex-direction: row;
}
#workspace-panel.ws-split #ws-blocks-view,
#workspace-panel.ws-split #ws-code-view {
  flex: 1; min-width: 0; display: flex !important;
}
/* In split mode, add a subtle divider between the two panes */
#workspace-panel.ws-split #ws-blocks-view {
  border-right: 2px solid var(--border);
}

/* When both right panels are floated, hide right-col and expand workspace */
#main.right-col-hidden #right-col { display: none !important; }
#main.right-col-hidden #workspace-panel {
  flex: 1 1 100%;
  width: 100%;
  max-width: none;
}
#main.right-col-hidden #div-v { display: none; }

/* Split mode: hide the tab buttons but keep the split toggle visible */
#workspace-panel.ws-split .panel-tabs .ptab { display: none; }
#workspace-panel.ws-split #btn-split-view { display: inline-flex !important; }

#ws-blocks-view {
  flex: 1; display: flex; flex-direction: column; overflow: hidden;
}
#ws-code-view {
  flex: 1; display: flex; flex-direction: column; overflow: hidden;
  background: #F4F6FB;
}
#ws-code-output {
  flex: 1; overflow: auto; padding: 12px 14px;
  font-family: 'Fira Code', 'JetBrains Mono', monospace;
  font-size: .74rem; color: #2D3554; margin: 0;
  white-space: pre; line-height: 1.6;
  background-origin: border-box; /* allow background-image error-line overlay */
}

/* Blockly block comment icon: replace Blockly's '?' with 'i' via font styling */
.blocklyIconGroup text {
  font-style: italic !important;
  font-weight: 700 !important;
  font-family: serif !important;
}
#ws-code-toolbar { background: #F4F6FB; border-bottom: 1px solid var(--border); }
#ws-code-toolbar .lang-btn { color: var(--text-muted); border: 1px solid var(--border); border-radius: 20px; }
#ws-code-toolbar .lang-btn.active { background: var(--primary) !important; color: #fff !important; border-color: var(--primary) !important; }

#blockly-div { flex: 1; width: 100%; height: 100%; }

/* Vertical divider */
.div-v {
  width: var(--divider);
  cursor: col-resize;
  background: var(--border);
  flex-shrink: 0;
  transition: background .2s;
  position: relative;
}
.div-v::after {
  content: ''; position: absolute; inset: 0 -4px;
}
.div-v:hover, .div-v.dragging { background: var(--primary); }

/* Right column */
#right-col {
  width: var(--col-split);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--bg);
  gap: 0;
}

/* ─── Panel card ────────────────────────────────────────────────────────────── */
.panel-card {
  display: flex; flex-direction: column;
  background: var(--surface);
  overflow: hidden;
  position: relative;
}
.panel-card + .div-h { flex-shrink: 0; }

/* Simulator panel */
#sim-panel {
  height: var(--row-split);
  flex-shrink: 0;
  border-bottom: 1px solid var(--border);
}

/* Bottom panel */
#bottom-panel { flex: 1; min-height: 0; }

/* Horizontal divider */
.div-h {
  height: var(--divider);
  cursor: row-resize;
  background: var(--border);
  flex-shrink: 0;
  transition: background .2s;
  position: relative;
}
.div-h::after {
  content: ''; position: absolute; inset: -4px 0;
}
.div-h:hover, .div-h.dragging { background: var(--primary); }

/* ─── Panel header ──────────────────────────────────────────────────────────── */
.panel-header {
  height: 34px;
  display: flex; align-items: center;
  padding: 0 10px;
  border-bottom: 1px solid var(--border-light);
  gap: 8px;
  flex-shrink: 0;
  background: var(--surface);
}
.panel-header-title {
  font-size: .72rem; font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase; letter-spacing: .7px;
  user-select: none;
  display: flex; align-items: center; gap: 5px;
}

/* Monitor mode — title turns green with a pulsing dot */
.panel-header-title.monitor-mode {
  color: #2bb570;
}
.panel-header-title.monitor-mode::before {
  content: '';
  display: inline-block;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #2bb570;
  box-shadow: 0 0 0 0 rgba(43,181,112,.5);
  animation: monitor-pulse 1.6s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes monitor-pulse {
  0%   { box-shadow: 0 0 0 0   rgba(43,181,112,.6); }
  60%  { box-shadow: 0 0 0 5px rgba(43,181,112,0); }
  100% { box-shadow: 0 0 0 0   rgba(43,181,112,0); }
}

.panel-header-actions { display: flex; align-items: center; gap: 3px; margin-left: auto; }

/* ─── Tabs ──────────────────────────────────────────────────────────────────── */
.panel-tabs { display: flex; gap: 1px; align-items: center; }

.ptab {
  padding: 5px 12px;
  border: none; background: transparent;
  color: var(--text-muted);
  font-size: .74rem; font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer; transition: all .15s;
  white-space: nowrap;
}
.ptab:hover { background: var(--surface2); color: var(--text); }
.ptab.active { background: var(--primary); color: white; }

.panel-content { display: none; flex: 1; flex-direction: column; min-height: 0; overflow: hidden; }
.panel-content.active { display: flex; }

/* ─── Simulator ─────────────────────────────────────────────────────────────── */
#sim-inner {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: var(--surface2);
}

#sim-canvas-2d {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  display: block;
}
#sim-canvas-3d {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  display: none;
}
#sim-canvas-3d canvas { width: 100% !important; height: 100% !important; display: block; }

/* Simulator fullscreen */
#sim-panel:fullscreen {
  width: 100vw !important;
  height: 100vh !important;
  flex-shrink: 0;
}
#sim-panel:fullscreen #sim-inner { flex: 1; }

/* Status strip */
#sim-status {
  flex-shrink: 0;
  display: flex; gap: 6px; align-items: center;
  padding: 4px 10px;
  border-top: 1px solid var(--border-light);
  overflow-x: auto;
  background: var(--surface);
  min-height: 32px;
}

.cube-chip {
  display: flex; align-items: center; gap: 4px;
  padding: 2px 8px;
  border-radius: 20px;
  border: 1px solid var(--chip-color, var(--border));
  font-size: .68rem; font-weight: 600;
  color: var(--chip-color, var(--text-muted));
  background: color-mix(in srgb, var(--chip-color, transparent) 8%, white);
  white-space: nowrap;
}
.chip-num { font-weight: 800; }
.led-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--chip-led, #CCC);
  flex-shrink: 0;
}
.led-dot.off { background: #DDD; }

.cube-count-wrap {
  display: flex; align-items: center; gap: 3px;
  color: var(--text-muted);
}
#sim-cube-count {
  width: 38px; height: 22px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--text);
  font-size: .72rem; text-align: center; padding: 0 2px;
}

/* Mat select in header */
#mat-select {
  font-size: .71rem;
  padding: 2px 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  font-family: inherit;
  cursor: pointer;
}
#mat-select:hover { border-color: var(--primary); }

/* ─── Code panel ────────────────────────────────────────────────────────────── */
.code-toolbar {
  display: flex; align-items: center; gap: 4px;
  padding: 4px 8px;
  border-bottom: 1px solid var(--border-light);
  background: var(--surface);
  flex-shrink: 0;
}
.lang-btn {
  padding: 3px 10px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: transparent;
  color: var(--text-muted);
  font-size: .71rem; font-weight: 600;
  cursor: pointer; transition: all .15s;
}
.lang-btn:hover { color: var(--text); border-color: var(--primary); }
.lang-btn.active { background: var(--primary); color: white; border-color: var(--primary); }

#code-output {
  flex: 1; overflow: auto;
  padding: 12px 14px;
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: .77rem; line-height: 1.7;
  background: #1A1D2E;
  color: #C9D1D9;
  white-space: pre-wrap; word-break: break-word;
}

/* ─── AI Chat ────────────────────────────────────────────────────────────────── */
#llm-toolbar {
  display: flex; align-items: center; gap: 5px;
  padding: 5px 8px;
  border-bottom: 1px solid var(--border-light);
  flex-shrink: 0;
  background: var(--surface);
}
#llm-provider {
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  font-size: .72rem;
  font-family: inherit;
  cursor: pointer;
}
#llm-api-key {
  flex: 1;
  min-width: 0;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  font-size: .72rem;
  font-family: inherit;
}
#llm-api-key:focus { outline: none; border-color: var(--primary); }
.llm-model-row {
  display: flex;
  align-items: center;
  gap: 4px;
  width: 100%;    /* wrap to second line and fill full width */
  min-width: 0;
}
#llm-model-select {
  flex: 1;
  min-width: 0;
  padding: 3px 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  font-size: .68rem;
  font-family: inherit;
  max-width: 100%;
}
#llm-model-select:focus { outline: none; border-color: var(--primary); }
.llm-fetch-btn {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  padding: 0;
  font-size: .92rem;
  line-height: 1;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
}
/* Card-scanner model select row */
.sc-model-row {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  min-width: 0;
}
.sc-model-sel {
  flex: 1;
  min-width: 0;
  padding: 3px 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: .78rem;
  font-family: inherit;
}
.sc-model-fetch-btn {
  flex-shrink: 0;
  padding: 2px 6px;
  font-size: .8rem;
}

#llm-messages {
  flex: 1; overflow-y: auto;
  padding: 10px;
  display: flex; flex-direction: column; gap: 8px;
}

.llm-msg { display: flex; flex-direction: column; gap: 3px; max-width: 92%; }
.llm-msg.user { align-self: flex-end; }
.llm-msg.assistant { align-self: flex-start; }

.msg-role {
  font-size: .65rem; font-weight: 700;
  color: var(--text-light);
  text-transform: uppercase; letter-spacing: .5px;
  padding: 0 2px;
}
.llm-msg.user .msg-role { text-align: right; color: var(--primary); }

.msg-body {
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: .79rem; line-height: 1.6;
}
.llm-msg.user .msg-body { background: var(--primary); color: white; border-radius: var(--radius) var(--radius-sm) var(--radius) var(--radius); }
.llm-msg.assistant .msg-body { background: var(--surface2); border: 1px solid var(--border); border-radius: var(--radius-sm) var(--radius) var(--radius) var(--radius); }
.llm-msg.error .msg-body { background: var(--danger-light); color: var(--danger); border: 1px solid #FECACA; }

.code-block {
  background: #1A1D2E;
  color: #C9D1D9;
  border-radius: var(--radius-sm);
  padding: 10px;
  font-family: monospace; font-size: .74rem;
  overflow-x: auto; white-space: pre;
  margin: 6px 0;
}

.llm-code-actions { display: flex; gap: 6px; }

#llm-input-wrap {
  display: flex; gap: 5px;
  padding: 7px;
  border-top: 1px solid var(--border-light);
  flex-shrink: 0;
  background: var(--surface);
}
#llm-input {
  flex: 1;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface2);
  color: var(--text);
  font-size: .79rem; font-family: inherit;
  resize: none; height: 64px; line-height: 1.4;
}
#llm-input:focus { outline: none; border-color: var(--primary); }
#llm-input::placeholder { color: var(--text-light); }

/* ─── Console ───────────────────────────────────────────────────────────────── */
#console-output {
  flex: 1; overflow-y: auto;
  padding: 8px;
  background: #1A1D2E;
}
.console-line {
  padding: 2px 4px;
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: .73rem; line-height: 1.65;
  border-bottom: 1px solid rgba(255,255,255,.04);
}
.console-line.start  { color: #79C0FF; }
.console-line.done   { color: #56D364; }
.console-line.stop   { color: #F78166; }
.console-line.error  { color: #FF7B72; }
.console-line.info   { color: #8B949E; }
.console-line.log    { color: #CDD6F4; }

/* ─── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 6px 14px;
  border: none; border-radius: var(--radius-sm);
  font-size: .78rem; font-weight: 700;
  font-family: inherit;
  cursor: pointer; transition: all .15s;
  white-space: nowrap;
}
.btn:disabled { opacity: .4; cursor: not-allowed; }

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover:not(:disabled) { background: var(--primary-h); }

.btn-success { background: var(--success); color: white; }
.btn-success:hover:not(:disabled) { background: #0E9858; }

.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover:not(:disabled) { background: #CC2A3D; }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.btn-ghost:hover:not(:disabled) { background: var(--surface2); color: var(--text); border-color: var(--text-muted); }
.btn-ghost.active { background: var(--primary-light,#e8f0ff); color: var(--primary); border-color: var(--primary); }

.btn-sm { padding: 4px 10px; font-size: .71rem; }
.btn-icon { padding: 5px; aspect-ratio: 1; border-radius: var(--radius-sm); }

/* Toggle buttons */
.btn-seg {
  display: flex;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2px;
  gap: 1px;
}
.seg-opt {
  padding: 2px 10px;
  border: none; background: transparent;
  border-radius: 18px;
  font-size: .69rem; font-weight: 700;
  color: var(--text-muted);
  cursor: pointer; transition: all .15s;
}
.seg-opt.active { background: var(--surface); color: var(--primary); box-shadow: var(--sh-xs); }

/* Icon buttons (flat, no border) */
.btn-flat {
  padding: 4px 7px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: .72rem; cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all .15s;
  line-height: 1;
}
.btn-flat:hover { background: var(--primary-light); color: var(--primary); }
.btn-flat.active { background: var(--primary); color: white; }

/* Float/dock buttons — kept for floating window */
.btn-float {
  padding: 3px 7px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: transparent;
  color: var(--text-muted);
  font-size: .68rem; cursor: pointer;
  transition: all .15s;
}
.btn-float:hover { background: var(--primary); color: white; border-color: var(--primary); }

/* ─── Floating panel ────────────────────────────────────────────────────────── */
.floating-win {
  position: fixed;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--sh-float);
  display: flex; flex-direction: column;
  overflow: hidden;
  z-index: 500;
  resize: both;
  min-width: 280px;
  min-height: 180px;
}
.floating-win-header {
  height: 32px;
  display: flex; align-items: center;
  padding: 0 10px; gap: 8px;
  background: var(--surface3);
  border-bottom: 1px solid var(--border);
  cursor: grab;
  user-select: none;
  flex-shrink: 0;
}
.floating-win-header:active { cursor: grabbing; }
.fwin-title { font-size: .73rem; font-weight: 700; color: var(--text-muted); flex: 1; }
.fwin-actions { display: flex; gap: 4px; }
.fwin-btn {
  padding: 2px 7px;
  border: 1px solid var(--border); border-radius: 4px;
  background: transparent; color: var(--text-muted);
  font-size: .67rem; cursor: pointer;
}
.fwin-btn:hover { background: var(--primary); color: white; border-color: var(--primary); }
.floating-win-body { flex: 1; display: flex; flex-direction: column; min-height: 0; overflow: hidden; }

/* ─── Custom mat dialog ─────────────────────────────────────────────────────── */
.mat-dialog-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.35);
  z-index: 800;
  display: flex; align-items: center; justify-content: center;
}
.mat-dialog {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--sh-lg);
  padding: 22px 24px;
  width: 340px;
  display: flex; flex-direction: column; gap: 14px;
}
.mat-dialog h3 {
  font-size: .9rem; font-weight: 800; color: var(--text);
  margin-bottom: 2px;
}
.mat-dialog-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.mat-dialog label {
  display: flex; flex-direction: column; gap: 3px;
  font-size: .72rem; font-weight: 600; color: var(--text-muted);
}
.mat-dialog label.full { grid-column: 1 / -1; }
.mat-dialog input {
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .8rem;
  font-family: inherit;
  color: var(--text);
  background: var(--surface2);
}
.mat-dialog input:focus { outline: none; border-color: var(--primary); }
.mat-dialog-actions {
  display: flex; gap: 7px; justify-content: flex-end; margin-top: 2px;
}
.mat-dialog-actions .btn-del {
  margin-right: auto;
  background: transparent; color: var(--danger);
  border: 1px solid var(--danger);
  padding: 5px 11px; border-radius: var(--radius-sm);
  font-size: .73rem; font-weight: 700; cursor: pointer;
}
.mat-dialog-actions .btn-del:hover { background: var(--danger-light); }

/* ─── Misc ──────────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-light); }

select, input { font-family: inherit; }

/* ─── Workspace header extras ────────────────────────────────────────────────── */

/* Sample program selector */
#sample-select {
  font-size: .71rem;
  padding: 2px 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface2);
  color: var(--text);
  font-family: inherit;
  cursor: pointer;
  max-width: 130px;
}
#sample-select:hover { border-color: var(--primary); }

/* Block count badge */
.block-count-badge {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 1px 7px;
  border-radius: 20px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: .65rem; font-weight: 700;
  user-select: none; white-space: nowrap;
  min-width: 22px;
  transition: all .2s;
}
.block-count-badge.zero {
  background: var(--surface3);
  color: var(--text-light);
}

/* Level toggle button (funnel-filter icon) */
.btn-level { border-radius: var(--radius-sm); }
.btn-level.easy {
  background: var(--success-light);
  color: var(--success);
}

/* Blockly trash can — let Blockly position at bottom-right naturally.
   NOTE: Do NOT use CSS 'position' or 'transform' here — they override the SVG
   transform attribute that Blockly uses to place the trashcan, breaking the layout. */
.blocklyTrash { opacity: 0.55; }
.blocklyTrash:hover { opacity: 0.9; }

/* ─── Blockly flat design overrides ─────────────────────────────────────────── */
/* The zelos renderer is used (set in app.js). Additional CSS tweaks: */

/* Workspace SVG background rect — controlled by theme but CSS wins for overrides */
.blocklyMainBackground { fill: #F0F2F7; }
[data-theme="dark"] .blocklyMainBackground { fill: #1A1D2E !important; }
[data-theme="hc"]   .blocklyMainBackground { fill: #000000 !important; }

/* Flyout background */
.blocklyFlyoutBackground { fill: #22253A; }
[data-theme="hc"] .blocklyFlyoutBackground { fill: #111111 !important; }

/* Remove embossed look from block text */
.blocklyText { font-weight: 600 !important; }

/* Smooth flyout */
.blocklyFlyoutBackground { rx: 0; }

/* Zelos block corners already flat; reduce border highlight */
.blocklyPath { filter: none !important; }

/* Toolbox category rows — compact height, colour bar flush left, text centred */
.blocklyTreeRow {
  display: flex !important;
  align-items: stretch !important;      /* let children fill the full row height */
  justify-content: flex-start !important;
  height: 24px !important;
  min-height: 24px !important;
  padding: 0 !important;
  box-sizing: border-box !important;
  overflow: hidden !important;
}
/* Content container holds colour bar + label */
.blocklyTreeRowContentContainer {
  display: flex !important;
  align-items: center !important;       /* vertically centre colour bar AND text */
  width: 100% !important;
  padding: 0 8px 0 0 !important;
  box-sizing: border-box !important;
}
.blocklyTreeLabel {
  flex: 1 !important;
  line-height: 1 !important;
  padding: 0 !important;
  margin: 0 !important;
  text-align: center !important;
  display: block !important;
  font-size: .73rem !important;
  font-weight: 600 !important;
  letter-spacing: .2px;
  white-space: nowrap !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
  vertical-align: middle !important;
}
/* Keep colour bar the way Blockly sets it */
.blocklyToolboxCategory .blocklyTreeRow {
  padding-left: 0 !important;
}
/* Ensure colour square is vertically centred */
.blocklyColourSquare, .blocklyTreeIcon {
  flex-shrink: 0 !important;
  align-self: center !important;
}
/* Selected row highlight */
.blocklyTreeRowSelected, .blocklyTreeRow[aria-selected="true"] {
  border-radius: 4px !important;
}

/* ─── 3D simulator mode toolbar ───────────────────────────────────────────── */
#sim3d-toolbar {
  position: absolute;
  left: 6px;
  top: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 20;
  pointer-events: auto;
}
.sim3d-toolbar-row {
  display: flex;
  gap: 3px;
}
.sim3d-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 9px;
  border-radius: 5px;
  border: 1px solid rgba(255,255,255,.25);
  background: rgba(30,30,50,.72);
  color: rgba(255,255,255,.85);
  cursor: pointer;
  font-size: .67rem;
  font-weight: 700;
  font-family: inherit;
  white-space: nowrap;
  transition: all .15s;
  backdrop-filter: blur(6px);
}
.sim3d-btn:hover {
  background: rgba(50,50,80,.88);
  border-color: rgba(255,255,255,.45);
  color: #fff;
}
.sim3d-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.sim3d-btn-trail {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 5px;
  border: 1px solid rgba(255,255,255,.2);
  background: rgba(30,30,50,.65);
  color: rgba(255,255,255,.7);
  cursor: pointer;
  font-size: .64rem;
  font-weight: 600;
  font-family: inherit;
  white-space: nowrap;
  transition: all .15s;
  backdrop-filter: blur(6px);
}
.sim3d-btn-trail.active {
  /* All cubes trail ON — solid accent colour matching orbit/grab active state */
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.sim3d-btn-trail.partial {
  /* Some cubes trail OFF — faint tint to signal mixed state */
  background: rgba(0,120,255,.28);
  border-color: rgba(0,120,255,.5);
  color: rgba(255,255,255,.8);
}
/* 2D trail button partial state (all-on uses .btn-flat.active) */
#btn-2d-trail.partial {
  background: rgba(0,120,255,.18);
  color: var(--primary);
}
.sim3d-hint {
  font-size: .6rem;
  color: rgba(255,255,255,.55);
  background: rgba(0,0,0,.38);
  padding: 3px 7px;
  border-radius: 4px;
  backdrop-filter: blur(4px);
  max-width: 220px;
  line-height: 1.45;
  pointer-events: none;
}
/* ── 3D rotation handles overlay ── */
.sim3d-rot-handles {
  position: absolute;
  bottom: 44px; right: 8px;
  z-index: 20;
  display: flex; flex-direction: column; align-items: center;
  gap: 3px;
  background: rgba(0,0,0,.35);
  border-radius: 8px;
  padding: 4px 5px;
  backdrop-filter: blur(4px);
  user-select: none;
}
.sim3d-rot-collapse {
  font-size: .55rem; color: rgba(255,255,255,.5);
  background: none; border: none; cursor: pointer;
  line-height: 1; padding: 0 4px; width: 100%;
  text-align: center;
}
.sim3d-rot-collapse:hover { color: rgba(255,255,255,.9); }
.sim3d-rot-body {
  display: grid;
  grid-template-columns: 26px 1fr 26px;
  grid-template-rows: 1fr;
  gap: 2px;
  align-items: center;
}
.sim3d-rot-col {
  display: flex; flex-direction: column;
  align-items: center; gap: 2px;
}
.sim3d-rot-btn {
  width: 26px; height: 26px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 5px;
  color: rgba(255,255,255,.85);
  font-size: 11px; cursor: pointer;
  transition: background .1s;
}
.sim3d-rot-btn:hover  { background: rgba(255,255,255,.25); }
.sim3d-rot-btn:active { background: rgba(255,255,255,.38); }
.sim3d-rot-center {
  width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 50%;
  color: rgba(255,255,255,.8);
  cursor: grab;
  transition: background .1s;
}
.sim3d-rot-center:hover { background: rgba(255,255,255,.24); }

/* ── Cube RPY rotation panel ── */
.sim3d-rpy {
  position: absolute;
  bottom: 44px; left: 8px;
  z-index: 20;
  background: rgba(0,0,0,.42);
  border-radius: 8px;
  padding: 5px 7px;
  backdrop-filter: blur(4px);
  display: flex; flex-direction: column; gap: 3px;
  min-width: 112px;
  user-select: none;
}
.sim3d-rpy-hdr {
  display: flex; align-items: center; justify-content: space-between;
  gap: 4px;
  padding-bottom: 3px;
  border-bottom: 1px solid rgba(255,255,255,.15);
}
.sim3d-rpy-title {
  font-size: .65rem; font-weight: 700; color: rgba(255,255,255,.7);
  letter-spacing: .06em;
}
.sim3d-rpy-toggle {
  font-size: .6rem; color: rgba(255,255,255,.55);
  background: none; border: none; cursor: pointer;
  padding: 0 2px; line-height: 1;
}
.sim3d-rpy-toggle:hover { color: #fff; }
.sim3d-rpy-body { display: flex; flex-direction: column; gap: 3px; }
.sim3d-rpy-section-lbl {
  font-size: .55rem; font-weight: 600;
  color: rgba(255,255,255,.45); letter-spacing: .05em;
  text-transform: uppercase;
}
.sim3d-rpy-sel {
  font-size: .65rem; padding: 1px 2px;
  background: rgba(255,255,255,.12); color: #fff;
  border: 1px solid rgba(255,255,255,.2); border-radius: 3px;
  flex: 1; min-width: 0; max-width: 70px;
  cursor: pointer;
}
.sim3d-rpy-sel option { background: #1a1c2a; color: #fff; }
.sim3d-rpy-axes { display: flex; flex-direction: column; gap: 3px; }
.sim3d-rpy-row {
  display: flex; align-items: center; gap: 3px;
}
.sim3d-rpy-lbl {
  font-size: .6rem; color: rgba(255,255,255,.6);
  width: 28px; flex-shrink: 0;
}
.sim3d-rpy-btn {
  width: 26px; height: 22px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,.13);
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 4px;
  color: rgba(255,255,255,.9);
  font-size: 13px; cursor: pointer;
  transition: background .1s;
  flex: 1;
}
.sim3d-rpy-btn:hover  { background: rgba(255,255,255,.26); }
.sim3d-rpy-btn:active { background: rgba(255,255,255,.40); }
/* Move+Height compact grid: 4 cols × 2 rows */
.sim3d-rpy-move-grid {
  display: grid;
  grid-template-columns: repeat(4, 26px);
  grid-template-rows: repeat(2, 22px);
  gap: 2px; justify-content: center;
}
.sim3d-rpy-move-grid > span { /* spacer cells */
  display: flex; align-items: center; justify-content: center;
}
.sim3d-rpy-reset {
  font-size: .6rem; color: rgba(255,255,255,.55); cursor: pointer;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 4px; padding: 2px 0; text-align: center;
  margin-top: 1px; transition: background .1s;
}
.sim3d-rpy-reset:hover { background: rgba(255,255,255,.18); color: #fff; }

/* Selected cube highlight badge */
.sim3d-selected-badge {
  position: absolute;
  left: 6px; bottom: 6px;
  font-size: .6rem;
  background: rgba(0,0,0,.45);
  color: #fff;
  padding: 2px 5px;
  border-radius: 4px;
  pointer-events: none;
  z-index: 20;
}

/* ─── Editable code panel ───────────────────────────────────────────────── */
#ws-code-output[contenteditable="true"],
#ws-code-output[contenteditable="plaintext-only"] {
  outline: 2px solid var(--primary);
  cursor: text;
  user-select: text;
}
#ws-code-output.code-override {
  border-left: 3px solid #FFAB19;
  padding-left: 6px;
  background: rgba(255,171,25,.04);
}
/* btn-ws-edit active: icon follows currentColor (white on blue bg — keep it visible) */
#btn-ws-edit.active svg { stroke: currentColor; }

/* Code toolbar icon contrast — light mode defaults, overridden per theme below */
#ws-code-toolbar .btn,
#ws-code-toolbar .btn-ghost {
  color: var(--text-muted) !important;
  border-color: var(--border) !important;
}
#ws-code-toolbar .btn:hover:not(:disabled),
#ws-code-toolbar .btn-ghost:hover:not(:disabled) {
  color: var(--text) !important;
  background: var(--surface2) !important;
  border-color: var(--border) !important;
}
#ws-code-toolbar .btn.active {
  background: var(--primary) !important;
  color: #fff !important;
  border-color: var(--primary) !important;
}

/* ─── Block context menu ─────────────────────────────────────────────── */
.block-ctx-menu {
  position: fixed;
  z-index: 9999;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--sh-lg);
  min-width: 140px;
  overflow: hidden;
  animation: ctx-appear .08s ease;
}
@keyframes ctx-appear {
  from { opacity: 0; transform: scale(.96); }
  to   { opacity: 1; transform: scale(1); }
}
.ctx-item {
  padding: 7px 14px;
  font-size: .78rem;
  font-family: inherit;
  cursor: pointer;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: background .1s;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
}
.ctx-item:hover { background: var(--primary-light); color: var(--primary); }
.ctx-item.disabled { opacity: .4; pointer-events: none; }
.ctx-sep { height: 1px; background: var(--border-light); margin: 2px 0; }

/* ─── Code override notice ───────────────────────────────────────────── */
.code-override-banner {
  background: rgba(255,171,25,.14);
  border-bottom: 1px solid rgba(255,171,25,.4);
  padding: 4px 10px;
  font-size: .68rem;
  color: #E8A800;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.code-override-banner button,
.qf-btn {
  background: transparent;
  border: 1px solid rgba(232,168,0,.5);
  color: #E8A800;
  border-radius: 10px;
  padding: 2px 8px;
  font-size: .62rem;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
  transition: background .12s;
}
.code-override-banner button:hover,
.qf-btn:hover { background: rgba(232,168,0,.2); }
.qf-revert { margin-left: auto; }
/* QuickFix buttons in error state */
.code-override-error .qf-btn {
  border-color: rgba(255,80,80,.45);
  color: #FF7B72;
}
.code-override-error .qf-btn:hover { background: rgba(255,60,60,.18); }
/* Error variant of banner */
.code-override-banner.code-override-error {
  background: rgba(220,50,50,.14);
  border-bottom-color: rgba(220,50,50,.4);
  color: #FF7B72;
}
.code-override-banner.code-override-error button {
  border-color: rgba(220,80,80,.5);
  color: #FF7B72;
}
/* Error message text truncation */
.err-msg { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.code-err-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 16px; height: 16px; border-radius: 50%;
  background: #FF7B72; color: #fff;
  font-size: .65rem; font-weight: 900; flex-shrink: 0;
  cursor: default;
}
/* Blocks-panel override notice — shown when JS code edit is active */
.ws-blocks-override-notice {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  font-size: .66rem;
  background: rgba(255,171,25,.1);
  border-bottom: 2px solid rgba(255,171,25,.3);
  color: #9A6800;
  flex-shrink: 0;
  z-index: 5;
}
.ws-blocks-override-notice span { flex: 1; }
.notice-revert-btn {
  font-size: .62rem;
  padding: 2px 9px;
  border: 1px solid currentColor;
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
  color: inherit;
  font-family: inherit;
  transition: background .15s;
  flex-shrink: 0;
}
.notice-revert-btn:hover { background: rgba(255,171,25,.2); }

/* Workspace comments overlay (read-only, above editable code) */
.ws-code-comments-overlay {
  background: rgba(100,200,120,.07);
  border-left: 3px solid rgba(100,200,120,.4);
  color: #7FC78A;
  padding: 4px 10px 4px 8px;
  font-size: .7rem;
  font-family: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
  white-space: pre;
  line-height: 1.55;
  user-select: none;
  pointer-events: none;
  flex-shrink: 0;
}

/* Workspace horizontal divider in toolbox */
.blocklyToolboxDiv { border-right: 1px solid rgba(255,255,255,.07) !important; }

/* ─── Variable monitor ───────────────────────────────────────────────────────── */
#var-monitor {
  flex-shrink: 0;
  background: var(--surface);
  border-top: 1px solid var(--border-light);
  padding: 4px 8px 6px;
  max-height: 120px;
  overflow-y: auto;
}
#var-monitor-title {
  font-size: .63rem;
  font-weight: 700;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: .6px;
  margin-bottom: 4px;
}
#var-monitor-items {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.vm-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .72rem;
}
.vm-name {
  font-weight: 700;
  color: var(--primary);
  min-width: 60px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.vm-val {
  color: var(--text);
  font-family: 'Fira Code', monospace;
  font-size: .7rem;
  min-width: 40px;
  background: var(--surface2);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
}
.vm-slider {
  flex: 1;
  min-width: 60px;
  accent-color: var(--primary);
  height: 4px;
  cursor: pointer;
}
.vm-slider-btn, .vm-toggle {
  padding: 1px 5px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: transparent;
  color: var(--text-muted);
  font-size: .66rem;
  cursor: pointer;
  flex-shrink: 0;
}
.vm-slider-btn:hover, .vm-toggle:hover {
  background: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
}

/* ─── Collapsible API key area ───────────────────────────────────────────────── */
#llm-api-area {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
  overflow: hidden;
  max-height: 80px;   /* tall enough for 2 rows */
  transition: max-height .25s ease, opacity .25s ease;
  opacity: 1;
}
#llm-api-area.collapsed {
  max-height: 0;
  opacity: 0;
  pointer-events: none;
}
#btn-api-toggle {
  font-size: .72rem;
  flex-shrink: 0;
  transition: transform .2s;
}

/* ─── Dark theme ─────────────────────────────────────────────────────────────── */
[data-theme="dark"] {
  --bg:          #1A1C2A;
  --surface:     #23263A;
  --surface2:    #2D3048;
  --surface3:    #363952;
  --border:      #404360;
  --border-light:#3A3D58;
  --text:        #E8EAFF;
  --text-muted:  #9BA0C0;
  --text-light:  #6B7090;
  --primary:        #4C97FF;
  --primary-h:      #2B7FFF;
  --primary-light:  #1A2B4A;
  --success:        #2ECC8B;
  --success-light:  #0F2A1E;
  --danger:         #FF4D6A;
  --danger-light:   #2A0F14;
  --sh-xs: 0 1px 2px rgba(0,0,0,.2);
  --sh-sm: 0 2px 6px rgba(0,0,0,.25);
  --sh-md: 0 4px 16px rgba(0,0,0,.3);
  --sh-lg: 0 8px 32px rgba(0,0,0,.35);
  --sh-float: 0 16px 48px rgba(0,0,0,.45);
}

/* High contrast theme */
[data-theme="hc"] {
  --bg:          #000;
  --surface:     #111;
  --surface2:    #1a1a1a;
  --surface3:    #222;
  --border:      #fff;
  --border-light:#888;
  --text:        #fff;
  --text-muted:  #ccc;
  --text-light:  #aaa;
  --primary:        #0CF;
  --primary-h:      #09F;
  --primary-light:  #001A22;
  --success:        #0F0;
  --success-light:  #001400;
  --danger:         #F44;
  --danger-light:   #1A0000;
}

/* ─── Dark theme overrides ───────────────────────────────────────────────────── */
/* Code view — make deeper in dark mode */
[data-theme="dark"] #ws-code-view,
[data-theme="dark"] #ws-code-output,
[data-theme="dark"] #code-output,
[data-theme="dark"] #ws-code-toolbar {
  background: #0D1117;
  color: #C9D1D9;
}
/* Code toolbar buttons — white on dark */
[data-theme="dark"] #ws-code-toolbar .btn,
[data-theme="dark"] #ws-code-toolbar .btn-ghost {
  color: rgba(255,255,255,.8) !important;
  border-color: rgba(255,255,255,.18) !important;
}
[data-theme="dark"] #ws-code-toolbar .btn:hover:not(:disabled),
[data-theme="dark"] #ws-code-toolbar .btn-ghost:hover:not(:disabled) {
  color: #fff !important;
  background: rgba(255,255,255,.13) !important;
  border-color: rgba(255,255,255,.38) !important;
}
/* Blocks override notice — slightly warmer tint in dark */
[data-theme="dark"] .ws-blocks-override-notice {
  background: rgba(255,171,25,.08);
  border-bottom-color: rgba(255,171,25,.25);
  color: #FFAB19;
}
[data-theme="dark"] .blocklyToolboxDiv {
  background: #0D1117 !important;
}
[data-theme="dark"] #blockly-div,
[data-theme="dark"] .blocklyWidgetDiv,
[data-theme="dark"] .blocklyDropDownDiv {
  background: #1A1D2E;
}
[data-theme="dark"] #console-output {
  background: #0D1117;
}
[data-theme="dark"] .code-block {
  background: #0D1117;
}
/* Workspace panel background */
[data-theme="dark"] #workspace-panel {
  background: #1A1D2E;
}
/* Panel headers */
[data-theme="dark"] .panel-header {
  background: var(--surface);
  border-color: var(--border);
}
/* Right column items */
[data-theme="dark"] #sim-status {
  background: var(--surface);
}
[data-theme="dark"] .cube-chip {
  background: color-mix(in srgb, var(--chip-color, transparent) 12%, #23263A);
}
/* Floating windows */
[data-theme="dark"] .floating-win {
  background: var(--surface);
  border-color: var(--border);
}
[data-theme="dark"] .floating-win-header {
  background: var(--surface3);
  border-color: var(--border);
}
/* Variable monitor */
[data-theme="dark"] #var-monitor {
  background: var(--surface);
  border-color: var(--border);
}
[data-theme="dark"] .vm-val {
  background: var(--surface2);
  border-color: var(--border);
  color: var(--text);
}
/* AI chat */
[data-theme="dark"] .llm-msg.assistant .msg-body {
  background: var(--surface2);
  border-color: var(--border);
}
/* LLM inputs */
[data-theme="dark"] #llm-provider,
[data-theme="dark"] #llm-api-key,
[data-theme="dark"] #llm-model-select,
[data-theme="dark"] #llm-input {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--border);
}
/* Mat / sample selects */
[data-theme="dark"] #mat-select,
[data-theme="dark"] #sample-select,
[data-theme="dark"] #lang-select {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--border);
}
/* Project name */
[data-theme="dark"] #project-name {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--border);
}
/* Cube sim count */
[data-theme="dark"] #sim-cube-count {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}
/* Blockly scrollbar */
[data-theme="dark"] .blocklyScrollbarBackground {
  fill: rgba(255,255,255,.05) !important;
}

/* ─── High contrast theme overrides ─────────────────────────────────────────── */
[data-theme="hc"] #ws-code-view,
[data-theme="hc"] #ws-code-output,
[data-theme="hc"] #ws-code-toolbar,
[data-theme="hc"] #code-output,
[data-theme="hc"] #console-output,
[data-theme="hc"] .code-block {
  background: #000;
  color: #FFF;
}
[data-theme="hc"] #ws-code-toolbar .btn,
[data-theme="hc"] #ws-code-toolbar .btn-ghost {
  color: #FFF !important;
  border-color: rgba(255,255,255,.4) !important;
}
[data-theme="hc"] #ws-code-toolbar .btn:hover:not(:disabled),
[data-theme="hc"] #ws-code-toolbar .btn-ghost:hover:not(:disabled) {
  color: #000 !important;
  background: #FFF !important;
}
[data-theme="hc"] .ws-blocks-override-notice {
  background: #330;
  border-bottom-color: #FF0;
  color: #FF0;
}
[data-theme="hc"] .blocklyToolboxDiv {
  background: #000 !important;
}
[data-theme="hc"] #blockly-div {
  background: #000;
}
[data-theme="hc"] .blocklyTreeRow {
  border: 1px solid transparent;
}
[data-theme="hc"] .blocklyTreeRowSelected,
[data-theme="hc"] .blocklyTreeRow[aria-selected="true"] {
  border-color: #00CCFF !important;
  outline: 2px solid #00CCFF !important;
}
[data-theme="hc"] .panel-header {
  border-color: #FFF;
}
[data-theme="hc"] .div-v,
[data-theme="hc"] .div-h {
  background: #FFF;
}

/* ─── Responsive ─────────────────────────────────────────────────────────────── */

/* Tablet / large phone landscape (≤ 700px) */
@media (max-width: 700px) {
  :root { --col-split: 100vw; --header-h: 44px; }

  /* Header: allow wrapping for crowded items */
  #header { flex-wrap: wrap; height: auto; min-height: 44px; padding: 6px 10px; gap: 6px; }
  #logo .logo-text { font-size: .78rem; }
  #run-controls { gap: 4px; }
  .btn-sm { padding: 4px 8px; font-size: .7rem; }

  /* Main layout: stack vertically */
  #main { flex-direction: column; }
  #workspace-panel { width: 100% !important; height: 45vh; flex-shrink: 0; }
  .div-v { display: none; }
  #right-col { width: 100% !important; height: 55vh; flex-direction: column; --row-split: 45vh; }
  #sim-panel { height: var(--row-split); }
  #bottom-panel { height: calc(55vh - var(--row-split) - 5px); }
  .div-h { cursor: row-resize; }

  /* Sim panel header: allow wrapping */
  #sim-panel .panel-header { flex-wrap: wrap; gap: 4px; height: auto; padding: 4px 8px; }
  select#mat-select { max-width: 100px; font-size: .68rem; }

  /* Workspace panel header: allow wrapping */
  #workspace-header { height: auto !important; min-height: 34px; flex-wrap: wrap; padding: 3px 8px; gap: 4px; }

  /* Code editor toolbar: allow wrapping */
  .code-toolbar { flex-wrap: wrap; }
}

/* Small phone portrait (≤ 480px) — hamburger menu + further compaction */
@media (max-width: 480px) {
  /* Show hamburger, collapse secondary header items */
  .hamburger-btn { display: flex !important; }

  /* #header-extra is hidden by default; .menu-open class reveals it */
  #header-extra {
    display: none;
    width: 100%;
    order: 10;          /* push below run/stop row */
    padding: 6px 2px 2px;
    border-top: 1px solid var(--border-light);
    flex-wrap: wrap;
    gap: 5px;
  }
  #header.menu-open #header-extra { display: flex; }

  /* Header needs relative positioning for potential future dropdown */
  #header { position: relative; }

  /* Tighten up run button labels */
  #btn-save span, #btn-load span { display: none; }

  /* Collapse logo text on very small screens */
  .logo-text { display: none; }
  .logo-github-link { display: none; }

  /* Language selector narrower */
  #lang-select { width: 50px; font-size: .7rem; }

  /* Project name fills available space in the extra row */
  #project-name { flex: 1; min-width: 80px; max-width: none; }

  /* Workspace header: tighter layout */
  #workspace-header { padding: 3px 6px; gap: 3px; }

  /* Tabs: icon-only on phones — hide text labels */
  #ws-tabs .ptab span[data-i18n] { display: none; }
  #ws-tabs .ptab { padding: 4px 8px; }
  #btn-split-view { padding: 4px 6px; }

  /* Sample selector narrower */
  #sample-select { max-width: 80px; font-size: .66rem; }

  /* Block tools: slightly smaller buttons */
  #ws-block-tools .btn-flat { padding: 3px 5px; }

  /* Hide block count badge and redo to save space */
  .block-count-badge { display: none; }
  #btn-redo { display: none; }

  /* Bottom panel: ensure it gets some height */
  #bottom-panel { min-height: 120px; }

  /* LLM toolbar: allow wrapping */
  #llm-toolbar { flex-wrap: wrap; }
}

/* ─── Card Scanner Modal ───────────────────────────────────────────────────── */
.scanner-modal {
  position: fixed; inset: 0; z-index: 2000;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(3px);
  animation: fadeIn .18s ease;
}

.scanner-dialog {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--sh-float);
  width: min(680px, 96vw);
  max-height: 90vh;
  display: flex; flex-direction: column;
  overflow: hidden;
  position: relative;
  transition: width .2s ease;
}
/* Wide mode for 2-column review step */
.scanner-dialog.sc-dialog-wide {
  width: min(900px, 96vw);
}

.scanner-hdr {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.scanner-title {
  display: flex; align-items: center; gap: 8px;
  font-size: .95rem; font-weight: 700; color: var(--text);
}

.scanner-close {
  background: none; border: none; cursor: pointer;
  font-size: 1.3rem; color: var(--text-muted); line-height: 1;
  padding: 2px 6px; border-radius: var(--radius-sm);
  transition: background .12s;
}
.scanner-close:hover { background: var(--surface3); color: var(--text); }

.scanner-body {
  flex: 1; overflow-y: auto; padding: 18px;
  display: flex; flex-direction: column; gap: 14px;
}

.sc-step { display: flex; flex-direction: column; gap: 12px; }
.sc-step.active { display: flex; }

/* ── Step 1: Capture ── */
.sc-hint {
  font-size: .82rem; color: var(--text-muted);
  line-height: 1.5; margin: 0;
}
.sc-hint-sm { font-size: .77rem; }

.sc-capture-row {
  display: flex; gap: 10px; flex-wrap: wrap;
}

.sc-big-btn {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 18px; font-size: .85rem; font-weight: 600;
  border-radius: var(--radius); cursor: pointer;
  min-width: 140px; justify-content: center;
}

/* File label styled as button */
label.sc-big-btn {
  border: 1.5px solid var(--border);
  background: var(--surface2); color: var(--text);
  transition: border-color .12s, background .12s;
}
label.sc-big-btn:hover {
  border-color: var(--primary); background: var(--primary-light);
}

#sc-video-wrap {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}

#sc-video {
  width: 100%; max-width: 460px; border-radius: var(--radius-sm);
  border: 1.5px solid var(--border); background: #000;
}

.sc-snap-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 9px 20px; font-weight: 700; font-size: .88rem;
}

#sc-preview-wrap {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}

#sc-preview-img {
  max-width: 100%; max-height: 280px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  display: block;
}

#sc-overlay-canvas {
  position: absolute; top: 0; left: 0;
  pointer-events: none;
  border-radius: var(--radius-sm);
}

.sc-preview-actions {
  display: flex; gap: 8px; flex-wrap: wrap; justify-content: center;
}

/* ── Step 2: Review — 2-column layout ── */
.sc-review-2col {
  flex-direction: row !important;
  align-items: flex-start;
  gap: 14px;
}
.sc-review-img-col {
  flex: 0 0 42%;
  max-width: 42%;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}
.sc-review-img-wrap {
  position: relative;
  width: 100%;
  border-radius: 6px;
  overflow: hidden;
  border: 1.5px solid var(--border);
  background: var(--surface3);
  min-height: 60px;
}
.sc-review-img-wrap img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: contain;
  border-radius: 5px;
}
.sc-review-img-wrap canvas {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  border-radius: 5px;
}
.sc-review-list-col {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sc-review-title {
  font-size: .88rem; font-weight: 700; color: var(--text);
  margin-bottom: 2px;
}

#sc-card-chips {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  min-height: 52px;
}

/* Individual card chip */
.sc-chip {
  display: flex; align-items: center; gap: 5px;
  padding: 6px 10px 6px 6px;
  background: var(--surface2);
  border: 2px solid var(--chip-color, var(--border));
  border-radius: 22px;
  cursor: pointer;
  user-select: none;
  transition: transform .1s, box-shadow .1s;
  position: relative;
}
.sc-chip:hover { transform: translateY(-1px); box-shadow: var(--sh-sm); }
.sc-chip:active { transform: translateY(0); }

.sc-chip-num {
  background: var(--chip-color, var(--border));
  color: #fff;
  border-radius: 50%;
  width: 18px; height: 18px;
  display: flex; align-items: center; justify-content: center;
  font-size: .7rem; font-weight: 800;
  flex-shrink: 0;
}

.sc-chip-icon {
  font-size: .95rem; line-height: 1; flex-shrink: 0;
  min-width: 18px; text-align: center;
}

.sc-chip-name {
  font-size: .74rem; font-weight: 600; color: var(--text);
  white-space: nowrap;
}

.sc-chip-toggle {
  font-size: .7rem; color: var(--text-muted);
  background: var(--surface3); border-radius: 4px;
  padding: 1px 3px;
}

.sc-chip-del {
  background: none; border: none;
  color: var(--text-muted); cursor: pointer;
  font-size: .85rem; line-height: 1; padding: 0 2px;
  margin-left: 2px;
  border-radius: 50%;
  transition: background .1s, color .1s;
}
.sc-chip-del:hover { background: var(--danger-light); color: var(--danger); }

/* ── Vertical drag-to-reorder card list ── */
.sc-card-list {
  display: flex; flex-direction: column; gap: 4px;
  max-height: 340px; overflow-y: auto;
  padding: 2px 0;
}

.sc-row {
  display: flex; align-items: center; gap: 7px;
  padding: 6px 8px;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: default; user-select: none;
  transition: background .1s, border-color .1s, box-shadow .1s;
}
.sc-row:hover { background: var(--surface); border-color: var(--border); }
.sc-row--over {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
  background: var(--primary-light);
}
.sc-row--dragging { opacity: .45; }

.sc-drag-handle {
  cursor: grab; color: var(--text-light);
  font-size: 13px; line-height: 1;
  padding: 0 1px; flex-shrink: 0;
  letter-spacing: -1px;
}
.sc-drag-handle:active { cursor: grabbing; }

.sc-row-num {
  min-width: 20px; height: 20px; border-radius: 50%;
  background: var(--surface3); color: var(--text-muted);
  font-size: 11px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

.sc-row-swatch {
  width: 14px; height: 14px;
  border-radius: 3px; flex-shrink: 0;
  border: 1px solid rgba(0,0,0,.14);
}

.sc-row-icon {
  font-size: 13px; min-width: 18px;
  text-align: center; flex-shrink: 0;
}

.sc-row-name {
  flex: 1; font-size: .8rem; font-weight: 500; color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* ── Inline card-type select ── */
.sc-row-type-sel {
  flex: 1; min-width: 0;
  padding: 2px 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: .78rem;
  font-family: inherit;
  cursor: pointer;
  transition: border-color .12s;
}
.sc-row-type-sel:focus {
  outline: none;
  border-color: var(--primary);
}
.sc-row-type-sel:hover { border-color: var(--primary-light); }

.sc-row-cycle {
  font-size: 11px; color: var(--primary); cursor: pointer;
  padding: 2px 5px; border-radius: 3px;
  border: 1px solid var(--primary-light);
  background: var(--primary-light);
  flex-shrink: 0; transition: background .1s;
}
.sc-row-cycle:hover { background: var(--primary); color: #fff; }
.sc-row-cycle-ph { width: 28px; flex-shrink: 0; }

.sc-row-del {
  font-size: 12px; color: var(--text-light); cursor: pointer;
  padding: 2px 5px; border-radius: 3px;
  border: none; background: transparent;
  flex-shrink: 0; line-height: 1;
  transition: background .1s, color .1s;
}
.sc-row-del:hover { background: var(--danger-light); color: var(--danger); }

.sc-add-row {
  display: flex; align-items: center; gap: 8px;
  flex-wrap: wrap;
  padding: 10px 0 2px;
  border-top: 1px solid var(--border-light);
}

.sc-add-label {
  font-size: .78rem; color: var(--text-muted); white-space: nowrap;
}

#sc-add-select {
  flex: 1; min-width: 160px; max-width: 280px;
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .78rem; font-family: inherit;
  background: var(--surface2); color: var(--text);
}
#sc-add-select:focus { outline: none; border-color: var(--primary); }

/* ── Footer ── */
.scanner-footer {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  background: var(--surface2);
}

.sc-status {
  flex: 1; font-size: .78rem; color: var(--text-muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sc-status.warn  { color: var(--warning); }
.sc-status.error { color: var(--danger);  }
.sc-status.info  { color: var(--primary); }

/* ── AI Mode toggle in scanner header (legacy kept for compatibility) ── */
.sc-mode-toggle {
  display: flex; align-items: center; gap: 3px;
  margin-left: auto; margin-right: 8px;
}
.sc-mode-btn {
  padding: 4px 10px; font-size: .74rem; font-weight: 600;
  border: 1px solid var(--border); border-radius: 20px;
  background: var(--surface2); color: var(--text-muted);
  cursor: pointer; transition: background .12s, color .12s, border-color .12s;
}
.sc-mode-btn:hover { border-color: var(--primary); color: var(--primary); }
.sc-mode-btn.active {
  background: var(--primary); color: #fff;
  border-color: var(--primary);
}
.sc-api-btn {
  padding: 4px 7px; font-size: .8rem;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface2); color: var(--text-muted);
  cursor: pointer; transition: background .12s, color .12s;
}
.sc-api-btn:hover { background: var(--surface3); color: var(--text); }

/* ── Analyze bar (mode seg + analyze btn + settings + retake) ── */
.sc-analyze-bar {
  display: flex; align-items: center; gap: 8px;
  flex-wrap: wrap; justify-content: center; margin-top: 4px;
}
.sc-mode-seg {
  display: flex; align-items: center; gap: 0;
  border: 1px solid var(--border); border-radius: 20px; overflow: hidden;
}
.sc-mode-seg .sc-mode-btn {
  border: none; border-radius: 0; margin: 0;
  padding: 4px 12px;
}
.sc-mode-seg .sc-mode-btn:first-child { border-radius: 20px 0 0 20px; }
.sc-mode-seg .sc-mode-btn:last-child  { border-radius: 0 20px 20px 0; }

/* ── Combined settings dialog (wider than API-only dialog) ── */
/* Combined settings dialog — fixed-center modal so it isn't clipped by scanner overflow */
.sc-combined-dialog {
  position: fixed !important;
  top: 50% !important;
  left: 50% !important;
  bottom: auto !important;
  right: auto !important;
  transform: translate(-50%, -50%);
  width: min(520px, 96vw);
  max-height: min(88vh, 640px);
  overflow-y: auto;
  overscroll-behavior: contain;
  z-index: 9999 !important;
}
.sc-combined-dialog .sc-api-dialog-inner {
  position: relative;
}

/* AI description hint */
.sc-ai-desc-hint {
  font-size: .78rem; color: var(--primary);
  background: color-mix(in srgb, var(--primary) 8%, transparent);
  border-left: 3px solid var(--primary);
  border-radius: 0 4px 4px 0;
  padding: 5px 10px; margin: 0 0 6px 0;
  line-height: 1.45;
}

/* API key area flash animation (used by LLM chat + card scanner) */
@keyframes apiKeyFlash {
  0%   { box-shadow: 0 0 0 0px rgba(255, 100, 0, 0.6); background: transparent; }
  25%  { box-shadow: 0 0 0 4px rgba(255, 100, 0, 0.4); background: rgba(255,150,0,.08); }
  60%  { box-shadow: 0 0 0 4px rgba(255, 100, 0, 0.4); background: rgba(255,150,0,.08); }
  100% { box-shadow: 0 0 0 0px rgba(255, 100, 0, 0); background: transparent; }
}
.api-key-flash {
  animation: apiKeyFlash 1.4s ease-out;
  border-radius: var(--radius-sm);
  outline: 2px solid rgba(255,120,0,.6);
}
.sc-api-dialog-close {
  position: absolute; top: 10px; right: 12px;
  background: none; border: none; font-size: 1.1rem;
  color: var(--text-muted); cursor: pointer; padding: 2px 6px;
  border-radius: 4px; line-height: 1;
}
.sc-api-dialog-close:hover { color: var(--text); background: var(--surface3); }

/* ── Settings sections ── */
.sc-settings-section {
  border-top: 1px solid var(--border-light);
  padding-top: 8px; margin-top: 4px;
}
.sc-settings-section-hdr {
  font-size: .78rem; font-weight: 700; color: var(--text);
  margin-bottom: 8px; padding-bottom: 4px;
  border-bottom: 1px solid var(--border-light);
  user-select: none;
}
.sc-settings-section-hdr:hover { color: var(--primary); }

/* ── Params row: compact multi-field row ── */
.sc-params-row {
  flex-direction: row !important; align-items: center; gap: 6px; flex-wrap: wrap;
}
.sc-params-row label {
  font-size: .73rem; color: var(--text-muted); font-weight: 600;
  white-space: nowrap;
}
.sc-params-row input[type="number"] {
  width: 68px; padding: 4px 6px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: .8rem; font-family: inherit;
  background: var(--surface2); color: var(--text);
}
.sc-params-row input[type="number"]:focus { outline: none; border-color: var(--primary); }

/* ── Mode radio group ── */
.sc-mode-radio {
  display: flex; gap: 16px; align-items: center; flex-wrap: wrap;
  padding: 4px 0;
}
.sc-mode-radio label {
  display: flex; align-items: center; gap: 5px;
  font-size: .78rem; color: var(--text); cursor: pointer;
}

/* ── Combined save/cancel actions ── */
.sc-api-actions {
  display: flex; gap: 8px; justify-content: flex-end;
  padding-top: 8px; border-top: 1px solid var(--border-light); margin-top: 4px;
}

/* ── LLM code style selector ── */
.llm-style-sel {
  font-size: .72rem; padding: 3px 6px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--surface2); color: var(--text-muted);
  cursor: pointer;
}
.llm-style-sel:focus { outline: none; border-color: var(--primary); }

/* ── API settings dialog (floats inside scanner-dialog) ── */
.sc-api-dialog {
  position: absolute; bottom: 56px; right: 14px; left: 14px;
  z-index: 50;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--sh-lg);
  animation: fadeIn .15s ease;
  max-height: min(75vh, 480px);
  overflow-y: auto;
  overscroll-behavior: contain;
}
.sc-api-dialog-inner {
  padding: 14px 16px; display: flex; flex-direction: column; gap: 9px;
}
.sc-api-dialog-title {
  font-size: .88rem; font-weight: 700; color: var(--text);
  border-bottom: 1px solid var(--border); padding-bottom: 8px;
}
.sc-api-field {
  display: flex; flex-direction: column; gap: 4px;
}
.sc-api-field label {
  font-size: .75rem; color: var(--text-muted); font-weight: 600;
}
.sc-api-field select,
.sc-api-field input[type="password"],
.sc-api-field input[type="text"] {
  padding: 5px 8px; border: 1px solid var(--border);
  border-radius: var(--radius-sm); font-size: .8rem;
  font-family: inherit; background: var(--surface2); color: var(--text);
}
.sc-api-field select:focus,
.sc-api-field input:focus {
  outline: none; border-color: var(--primary);
}
.sc-api-note {
  font-size: .73rem; color: var(--text-light); line-height: 1.5;
}
/* Section divider labels within settings dialog */
.sc-api-section-label {
  font-size: .72rem; font-weight: 700; color: var(--primary);
  text-transform: uppercase; letter-spacing: .5px;
  border-top: 1px solid var(--border-light);
  padding-top: 6px; margin-top: 2px;
}
/* Beta badge */
.ai-beta-badge {
  display: inline-block;
  font-size: .55em; font-weight: 700;
  color: var(--primary);
  vertical-align: super;
  margin-left: 2px;
  letter-spacing: 0;
  opacity: .85;
}
.sc-api-buttons {
  display: flex; gap: 8px; justify-content: flex-end;
}

/* Dark theme overrides */
[data-theme="dark"] .scanner-dialog   { background: var(--surface); }
[data-theme="dark"] .sc-chip          { background: var(--surface2); }
[data-theme="dark"] .sc-review-img-wrap { border-color: var(--border); background: var(--surface2); }
[data-theme="dark"] .sc-row-type-sel  { background: var(--surface2); border-color: var(--border); color: var(--text); }
[data-theme="dark"] #sc-add-select  { background: var(--surface2); }
[data-theme="dark"] .sc-api-dialog  { background: var(--surface); }

/* Responsive */
@media (max-width: 640px) {
  .scanner-dialog       { width: 100vw; max-height: 100vh; border-radius: 0; }
  .scanner-dialog.sc-dialog-wide { width: 100vw; }
  .scanner-body         { padding: 14px; }
  .sc-capture-row       { flex-direction: column; }
  .sc-big-btn           { width: 100%; }
  /* Stack review columns vertically on small screens */
  .sc-review-2col       { flex-direction: column !important; }
  .sc-review-img-col    { max-width: 100%; flex: none; }
  .sc-review-img-wrap img { max-height: 200px; }
}

/* ─── About button (logo area) ───────────────────────────────────────────────── */
.logo-about-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  opacity: .55;
  padding: 3px;
  border-radius: 50%;
  margin-left: 1px;
  transition: opacity .15s, color .15s;
  flex-shrink: 0;
}
.logo-about-btn:hover { opacity: 1; color: var(--text); }
.logo-about-btn svg   { display: block; }

/* ─── About dialog overlay ───────────────────────────────────────────────────── */
.about-overlay {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: rgba(0,0,0,.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  backdrop-filter: blur(2px);
}
.about-overlay[hidden] { display: none !important; }

.about-dialog {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  width: 100%;
  max-width: 440px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 12px 40px rgba(0,0,0,.18);
  display: flex;
  flex-direction: column;
}

/* Header */
.about-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.about-logo-mark {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.about-logo-mark svg { width: 24px; height: 24px; }
.about-app-name {
  font-size: .88rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}
.about-fan-badge {
  display: inline-block;
  font-size: .68rem;
  font-weight: 600;
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  border-radius: 20px;
  padding: 1px 7px;
  margin-top: 3px;
}
.about-close-btn {
  margin-left: auto;
  padding: 5px;
  border-radius: 7px;
  color: var(--text-muted);
  flex-shrink: 0;
}
.about-close-btn:hover { background: var(--surface3); color: var(--text); }

/* Body */
.about-body {
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: .78rem;
  color: var(--text);
  line-height: 1.6;
}
.about-disclaimer {
  color: var(--text-muted);
  font-size: .75rem;
  line-height: 1.55;
}
.about-trademark {
  color: var(--text-muted);
  font-size: .72rem;
  line-height: 1.5;
}
.about-section {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px 12px;
  background: var(--surface2);
  border-radius: 8px;
}
.about-section-label {
  font-size: .73rem;
  font-weight: 600;
  color: var(--text-muted);
}
.about-links-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.about-link {
  color: var(--primary);
  text-decoration: none;
  font-size: .78rem;
  font-weight: 500;
}
.about-link:hover { text-decoration: underline; }
.about-credit-text {
  font-size: .78rem;
  color: var(--text);
}
.about-license {
  font-size: .73rem;
  color: var(--text-muted);
}

/* Footer */
.about-footer {
  padding: 12px 20px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.about-version {
  font-size: .72rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

/* Dark theme */
[data-theme="dark"] .about-dialog    { background: var(--surface); }
[data-theme="dark"] .about-fan-badge { background: color-mix(in srgb, var(--primary) 18%, transparent); }
[data-theme="dark"] .about-section   { background: var(--surface2); }