body.shell-italic-off {
  --shell-font-style: normal;
}

.material-symbols-rounded {
  font-family: 'Material Symbols Rounded';
  font-variation-settings:
  'FILL' 0,
  'wght' 400,
  'GRAD' 0,
  'opsz' 24
}
:root {
  --shell-font-family: 'Google Sans Code', monospace;
  --shell-font-style: italic;
  --shell-font-variation: 'MONO' 1;
  --md-sys-color-primary: #C3C5FF;
  --md-sys-color-on-primary: #292E67;
  --md-sys-color-primary-container: #40447F;
  --md-sys-color-on-primary-container: #E1E0FF;
  --md-sys-color-secondary: #FFB1C4;
  --md-sys-color-on-secondary: #5E1133;
  --md-sys-color-secondary-container: #7D2949;
  --md-sys-color-on-secondary-container: #FFD9E2;
  --md-sys-color-tertiary: #FFB0C9;
  --md-sys-color-on-tertiary: #5E1136;
  --md-sys-color-tertiary-container: #7D294E;
  --md-sys-color-on-tertiary-container: #FFD9E4;
  --md-sys-color-error: #EB9C8A;
  --md-sys-color-on-error: #71000D;
  --md-sys-color-error-container: #83261E;
  --md-sys-color-on-error-container: #FFC3BF;
  --md-sys-color-background: #131320;
  --md-sys-color-on-background: #E4E0F9;
  --md-sys-color-surface: #131320;
  --md-sys-color-on-surface: #E4E0F9;
  --md-sys-color-surface-variant: #46464F;
  --md-sys-color-on-surface-variant: #C8C5D0;
  --md-sys-color-outline: #918F9A;
  --md-sys-color-outline-variant: #46464F;
  --md-sys-color-surface-container-lowest: #0D0D18;
  --md-sys-color-surface-container-low: #1B1B29;
  --md-sys-color-surface-container: #1F1F2D;
  --md-sys-color-surface-container-high: #292838;
  --md-sys-color-surface-container-highest: #343342;
  --md-sys-color-surface-bright: #39374A;
  --md-sys-color-surface-dim: #131320;
  --md-sys-color-inverse-surface: #E4E0F9;
  --md-sys-color-inverse-on-surface: #2E2D3D;
  --md-sys-color-inverse-primary: #5B5E9C;
  --md-sys-color-surface-tint: #C3C5FF;
  --md-sys-color-scrim: #000000;
  --md-sys-color-shadow: #000000;

  --shape-xs: 4px;
  --shape-sm: 8px;
  --shape-md: 12px;
  --shape-lg: 16px;
  --shape-xl: 24px;
  --shape-2xl: 28px;
  --shape-full: 9999px;

  --elev-1: 0 1px 2px rgba(0,0,0,.3), 0 1px 3px 1px rgba(0,0,0,.15);
  --elev-2: 0 1px 2px rgba(0,0,0,.3), 0 2px 6px 2px rgba(0,0,0,.15);
  --elev-3: 0 4px 8px 3px rgba(0,0,0,.15), 0 1px 3px rgba(0,0,0,.3);

  --motion-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --motion-standard: cubic-bezier(0.2, 0, 0, 1);
  --motion-emphasized: cubic-bezier(0.05, 0.7, 0.1, 1.0);
  --motion-duration-short: 200ms;
  --motion-duration-medium: 350ms;
  --motion-duration-long: 500ms;
}

.light-theme {
  --md-sys-color-primary: #5B5E9C;
  --md-sys-color-on-primary: #FFFFFF;
  --md-sys-color-primary-container: #E1E0FF;
  --md-sys-color-on-primary-container: #14164C;
  --md-sys-color-secondary: #B41155;
  --md-sys-color-on-secondary: #FFFFFF;
  --md-sys-color-secondary-container: #FFD9E2;
  --md-sys-color-on-secondary-container: #3E0021;
  --md-sys-color-tertiary: #A6335A;
  --md-sys-color-on-tertiary: #FFFFFF;
  --md-sys-color-tertiary-container: #FFD9E4;
  --md-sys-color-on-tertiary-container: #3E0021;
  --md-sys-color-error: #BA1A1A;
  --md-sys-color-on-error: #FFFFFF;
  --md-sys-color-error-container: #FFDAD6;
  --md-sys-color-on-error-container: #410002;
  --md-sys-color-background: #FFDBED;
  --md-sys-color-on-background: #201A26;
  --md-sys-color-surface: #FFDBED;
  --md-sys-color-on-surface: #201A26;
  --md-sys-color-surface-variant: #E6E0F5;
  --md-sys-color-on-surface-variant: #47464F;
  --md-sys-color-outline: #79747E;
  --md-sys-color-outline-variant: #C9C4D3;
  --md-sys-color-surface-container-lowest: #FFFFFF;
  --md-sys-color-surface-container-low: #FFEAF3;
  --md-sys-color-surface-container: #FFE1EE;
  --md-sys-color-surface-container-high: #FBD3E5;
  --md-sys-color-surface-container-highest: #F2C5DA;
  --md-sys-color-inverse-surface: #342F3B;
  --md-sys-color-inverse-on-surface: #FFEAF3;
  --md-sys-color-inverse-primary: #C3C5FF;

  --theme-bg: #FFDBED;
  --theme-surface: #FFEAF3;
  --theme-surface-high: #FBD3E5;
  --theme-on-surface: #201A26;
  --theme-primary: #5B5E9C;
  --theme-primary-container: #E1E0FF;
  --theme-on-primary: #FFFFFF;
  --theme-outline: #79747E;
  --theme-outline-variant: #C9C4D3;
}

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

html, body {
  height: 100%;
  width: 100%;
  overflow: hidden;
  font-family: 'Google Sans Flex', sans-serif;
  background: var(--md-sys-color-background);
  color: var(--md-sys-color-on-surface);
  -webkit-font-smoothing: antialiased;
  transition: background var(--motion-duration-medium) var(--motion-standard),
              color var(--motion-duration-medium) var(--motion-standard);
}

.app-shell {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  position: relative;
  overflow: hidden;
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--md-sys-color-surface-container-low);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  flex-shrink: 0;
  z-index: 10;
  position: relative;
}

.top-bar::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--md-sys-color-primary), transparent);
  opacity: 0.4;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--shape-md);
  background: linear-gradient(135deg, var(--md-sys-color-primary-container), var(--md-sys-color-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: var(--elev-1);
  flex-shrink: 0;
  transition: transform var(--motion-duration-short) var(--motion-spring);
}
.brand-icon:active { transform: scale(0.92); }

.brand-text {
  display: flex;
  flex-direction: column;
}
.brand-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--md-sys-color-on-surface);
  letter-spacing: -0.3px;
  line-height: 1;
}
.brand-sub {
  font-size: 11px;
  font-weight: 400;
  color: var(--md-sys-color-on-surface-variant);
  letter-spacing: 0.4px;
  line-height: 1.4;
}

.top-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--shape-full);
  background: transparent;
  border: none;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: background var(--motion-duration-short) var(--motion-standard),
              color var(--motion-duration-short) var(--motion-standard),
              transform var(--motion-duration-short) var(--motion-spring);
  -webkit-tap-highlight-color: transparent;
  position: relative;
  overflow: hidden;
}
.icon-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--shape-full);
  background: var(--md-sys-color-on-surface);
  opacity: 0;
  transition: opacity var(--motion-duration-short) var(--motion-standard);
}
.icon-btn:hover::before { opacity: 0.08; }
.icon-btn:active { transform: scale(0.88); }
.icon-btn:active::before { opacity: 0.12; }

.editor-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px 6px;
  background: var(--md-sys-color-surface-container);
  flex-shrink: 0;
}

.file-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--shape-full);
  padding: 4px 12px 4px 8px;
  font-size: 12px;
  font-family: 'JetBrains Mono', monospace;
  color: var(--md-sys-color-primary);
  font-weight: 500;
}
.file-chip span { opacity: 0.8; }
.chip-icon { display: flex; align-items: center; opacity: 0.9; }

.editor-meta {
  font-size: 11px;
  color: var(--md-sys-color-on-surface-variant);
  font-family: 'JetBrains Mono', monospace;
}

.editor-wrapper {
  flex: 1;
  overflow: hidden;
  position: relative;
  background: var(--md-sys-color-surface-container-lowest);
}

#editor-container {
  width: 100%;
  height: 100%;
  overflow: auto;
  position: relative;
}

.code-area {
  display: flex;
  min-height: 100%;
  font-family: var(--shell-font-family);
  font-style: var(--shell-font-style);
  font-variation-settings: var(--shell-font-variation);
  font-size: 13px;
  line-height: 1.7;
  tab-size: 4;
  position: relative;
}

.line-numbers {
  padding: 12px 8px 12px 12px;
  background: var(--md-sys-color-surface-container-low);
  border-right: 1px solid var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-on-surface-variant);
  user-select: none;
  font-size: 12px;
  text-align: right;
  min-width: 42px;
  flex-shrink: 0;
  opacity: 0.6;
  line-height: 1.7;
  white-space: pre;
  overflow: hidden;
}

.editor-input-wrapper {
  flex: 1;
  position: relative;
  overflow: hidden;
}

.highlight-layer {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  pointer-events: none;
  padding: 12px 12px 12px 8px;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--shell-font-family);
  font-style: var(--shell-font-style);
  font-variation-settings: var(--shell-font-variation);
  font-size: 13px;
  line-height: 1.7;
  color: transparent;
  overflow: hidden;
}

#code-input {
  width: 100%;
  height: 100%;
  padding: 12px 12px 12px 8px;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  font-family: var(--shell-font-family);
  font-style: var(--shell-font-style);
  font-variation-settings: var(--shell-font-variation);
  font-size: 13px;
  line-height: 1.7;
  color: var(--md-sys-color-on-surface);
  caret-color: var(--md-sys-color-primary);
  position: relative;
  z-index: 2;
  white-space: pre;
  overflow-wrap: normal;
  overflow-x: auto;
  tab-size: 4;
  -webkit-text-fill-color: transparent;
}

@supports not (-webkit-text-fill-color: transparent) {
  #code-input { color: var(--md-sys-color-on-surface); }
}

.syn-keyword { color: #B9BCFF; font-weight: 600; }
.syn-builtin { color: #D6D3FF; }
.syn-string { color: #C9F0DC; }
.syn-comment { color: #7A76A0; font-style: italic; }
.syn-number { color: #FF9BB0; }
.syn-operator { color: #9EA4FF; }
.syn-bracket { color: #D6D3FF; }
.syn-function { color: #8CC9FF; }
.syn-class-name { color: #8CC9FF; font-weight: 600; }
.syn-decorator { color: #FF7A9C; }
.syn-self { color: #FFA8C4; font-style: italic; }
.syn-bool { color: #FFA8C4; font-weight: 600; }
.syn-none { color: #FFA8C4; font-weight: 600; }
.syn-default { color: var(--md-sys-color-on-surface); }

.light-theme .syn-keyword { color: #34348A; font-weight: 600; }
.light-theme .syn-builtin { color: #3D3F7A; }
.light-theme .syn-string { color: #2E7D5B; }
.light-theme .syn-comment { color: #8A7E88; font-style: italic; }
.light-theme .syn-number { color: #C23B62; }
.light-theme .syn-operator { color: #3D3F7A; }
.light-theme .syn-bracket { color: #6B3F6E; }
.light-theme .syn-function { color: #1B5A8A; }
.light-theme .syn-class-name { color: #1B5A8A; font-weight: 600; }
.light-theme .syn-decorator { color: #A8447A; }
.light-theme .syn-self { color: #8E1A4A; font-style: italic; }
.light-theme .syn-bool { color: #8E1A4A; font-weight: 600; }
.light-theme .syn-none { color: #8E1A4A; font-weight: 600; }
.light-theme .syn-default { color: #201A26; }

#autocomplete-box {
  position: fixed;
  background: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--shape-md);
  box-shadow: var(--elev-3);
  overflow: hidden;
  z-index: 100;
  max-height: 200px;
  overflow-y: auto;
  min-width: 180px;
  max-width: 280px;
  display: none;
  animation: popIn var(--motion-duration-short) var(--motion-spring);
  scrollbar-width: thin;
  scrollbar-color: var(--md-sys-color-outline-variant) transparent;
}

@keyframes popIn {
  from { opacity: 0; transform: scale(0.92) translateY(-4px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.ac-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  cursor: pointer;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--md-sys-color-on-surface);
  transition: background var(--motion-duration-short) var(--motion-standard);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}
.ac-item:last-child { border-bottom: none; }
.ac-item:hover, .ac-item.selected {
  background: rgba(122,216,191,0.15);
  color: var(--md-sys-color-primary);
}
.ac-badge {
  font-size: 9px;
  padding: 2px 5px;
  border-radius: var(--shape-xs);
  font-family: 'Google Sans Flex', sans-serif;
  font-weight: 600;
  letter-spacing: 0.3px;
  flex-shrink: 0;
}
.ac-badge.kw { background: rgba(185,188,255,0.2); color: #B9BCFF; }
.ac-badge.fn { background: rgba(214,211,255,0.2); color: #D6D3FF; }
.ac-badge.bi { background: rgba(201,240,220,0.2); color: #C9F0DC; }
.ac-badge.sn { background: rgba(140,201,255,0.2); color: #8CC9FF; }
.ac-name { flex: 1; }

.resize-handle {
  height: 6px;
  background: var(--md-sys-color-surface-container);
  cursor: ns-resize;
  position: relative;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--motion-duration-short) var(--motion-standard);
}
.resize-handle::after {
  content: '';
  width: 32px;
  height: 3px;
  border-radius: var(--shape-full);
  background: var(--md-sys-color-outline-variant);
  transition: background var(--motion-duration-short), width var(--motion-duration-short) var(--motion-spring);
}
.resize-handle:hover::after { width: 48px; background: var(--md-sys-color-primary); }
.resize-handle.dragging::after { width: 56px; background: var(--md-sys-color-primary); }

.output-section {
  background: var(--md-sys-color-surface-container-lowest);
  border-top: 1px solid var(--md-sys-color-outline-variant);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  height: 200px;
  min-height: 80px;
  max-height: 60vh;
  transition: height var(--motion-duration-medium) var(--motion-emphasized);
  overflow: hidden;
}

.output-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px 8px 12px;
  background: var(--md-sys-color-surface-container);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  flex-shrink: 0;
}

.output-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--md-sys-color-on-surface-variant);
  text-transform: uppercase;
  letter-spacing: 1px;
  flex: 1;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--md-sys-color-outline);
  transition: background var(--motion-duration-short), transform var(--motion-duration-short) var(--motion-spring);
}
.status-dot.running {
  background: #FCF721;
  animation: pulse 0.7s ease-in-out infinite alternate;
}
.status-dot.success { background: #B8E0C4; }
.status-dot.error { background: #F2B8B5; }

@keyframes pulse {
  from { transform: scale(1); opacity: 0.8; }
  to { transform: scale(1.4); opacity: 1; }
}

#output {
  flex: 1;
  overflow-y: auto;
  padding: 10px 14px;
  font-family: var(--shell-font-family);
  font-style: var(--shell-font-style);
  font-variation-settings: var(--shell-font-variation);
  font-size: 12px;
  line-height: 1.7;
  color: var(--md-sys-color-on-surface);
  white-space: pre-wrap;
  word-break: break-word;
  scrollbar-width: thin;
  scrollbar-color: var(--md-sys-color-outline-variant) transparent;
}

#output .out-line { display: block; }
#output .out-line.error { color: var(--md-sys-color-error); }
#output .out-line.success { color: #B8E0C4; }
#output .out-line.info { color: var(--md-sys-color-on-surface-variant); font-style: italic; }
#output .out-line.system { color: var(--md-sys-color-primary); font-weight: 500; }

.bottom-nav {
  display: flex;
  align-items: center;
  background: var(--md-sys-color-surface-container-low);
  border-top: 1px solid var(--md-sys-color-outline-variant);
  padding: 8px 0 max(8px, env(safe-area-inset-bottom));
  flex-shrink: 0;
  position: relative;
  z-index: 10;
}

.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 4px 8px;
  cursor: pointer;
  background: none;
  border: none;
  -webkit-tap-highlight-color: transparent;
  color: var(--md-sys-color-on-surface-variant);
  transition: color var(--motion-duration-short) var(--motion-standard);
  position: relative;
}

.nav-indicator {
  position: absolute;
  top: 1px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 56px;
  height: 32px;
  background: var(--md-sys-color-secondary-container);
  border-radius: var(--shape-full);
  transition: transform var(--motion-duration-medium) var(--motion-spring),
              background var(--motion-duration-short);
  z-index: 0;
}

.nav-item.active .nav-indicator { transform: translateX(-50%) scaleX(1); }
.nav-item.active { color: var(--md-sys-color-on-secondary-container); }

.nav-icon {
  font-size: 20px;
  position: relative;
  z-index: 1;
  transition: transform var(--motion-duration-short) var(--motion-spring);
}
.nav-item:active .nav-icon { transform: scale(0.85); }
.nav-item.active .nav-icon { transform: scale(1.05); }

.nav-label {
  font-size: 10px;
  font-weight: 500;
  position: relative;
  z-index: 1;
  letter-spacing: 0.2px;
}

.run-fab {
  position: fixed;
  bottom: calc(72px + env(safe-area-inset-bottom));
  right: 16px;
  width: 56px;
  height: 56px;
  border-radius: var(--shape-xl);
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: var(--elev-3);
  z-index: 20;
  transition: transform var(--motion-duration-short) var(--motion-spring),
              box-shadow var(--motion-duration-short) var(--motion-standard),
              background var(--motion-duration-short),
              border-radius var(--motion-duration-medium) var(--motion-spring),
              width var(--motion-duration-medium) var(--motion-spring);
  -webkit-tap-highlight-color: transparent;
  overflow: hidden;
}

.run-fab:hover {
  box-shadow: 0 6px 20px rgba(122,216,191,0.40);
  transform: translateY(-2px);
}
.run-fab:active {
  transform: scale(0.93);
  box-shadow: var(--elev-1);
}
.run-fab.running {
  background: var(--md-sys-color-tertiary-container);
  border-radius: var(--shape-full);
}

.console-fab {
  position: fixed;
  bottom: calc(72px + env(safe-area-inset-bottom));
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: var(--shape-lg);
  background: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--elev-2);
  z-index: 19;
  opacity: 0;
  pointer-events: none;
  transform: translateY(0px) scale(0.8);
  transition: opacity var(--motion-duration-medium) var(--motion-spring),
              transform var(--motion-duration-medium) var(--motion-spring),
              bottom var(--motion-duration-medium) var(--motion-emphasized);
  -webkit-tap-highlight-color: transparent;
}

.console-fab.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0px) scale(1);
  bottom: calc(72px + env(safe-area-inset-bottom) + 56px + 8px);
}
.console-fab:active { transform: scale(0.88); }

.console-fab .output-badge {
  position: absolute;
  top: -3px;
  right: -3px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--md-sys-color-primary);
  border: 2px solid var(--md-sys-color-background);
  display: none;
}
.console-fab.has-output .output-badge { display: block; }

.fab-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  transform: scale(0);
  animation: ripple 0.5s ease-out;
  pointer-events: none;
}
@keyframes ripple {
  to { transform: scale(4); opacity: 0; }
}

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

.settings-panel {
  padding: 16px;
  overflow-y: auto;
  flex: 1;
  scrollbar-width: thin;
  scrollbar-color: var(--md-sys-color-outline-variant) transparent;
}

.settings-section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--md-sys-color-primary);
  margin: 16px 0 8px;
  padding-left: 2px;
}
.settings-section-title:first-child { margin-top: 0; }

.settings-card {
  background: var(--md-sys-color-surface-container);
  border-radius: var(--shape-xl);
  overflow: hidden;
  margin-bottom: 12px;
  border: 1px solid var(--md-sys-color-outline-variant);
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  gap: 12px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  transition: background var(--motion-duration-short) var(--motion-standard);
}
.setting-row:last-child { border-bottom: none; }
.setting-row:hover { background: rgba(122,216,191,0.05); }

.setting-info { flex: 1; }
.setting-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
  margin-bottom: 2px;
}
.setting-sub {
  font-size: 12px;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.4;
}

.m3-switch {
  width: 52px;
  height: 32px;
  border-radius: var(--shape-full);
  background: var(--md-sys-color-surface-variant);
  border: 2px solid var(--md-sys-color-outline);
  cursor: pointer;
  position: relative;
  transition: background var(--motion-duration-medium) var(--motion-standard),
              border-color var(--motion-duration-medium) var(--motion-standard);
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
  outline: none;
  display: inline-block;
}
.m3-switch.on {
  background: var(--md-sys-color-primary);
  border-color: var(--md-sys-color-primary);
}
.m3-switch-thumb {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  left: 4px;
  width: 16px;
  height: 16px;
  background: var(--md-sys-color-outline);
  transition: left var(--motion-duration-medium) var(--motion-spring),
              width var(--motion-duration-short) var(--motion-spring),
              height var(--motion-duration-short) var(--motion-spring),
              background var(--motion-duration-medium) var(--motion-standard);
}
.m3-switch.on .m3-switch-thumb {
  width: 24px;
  height: 24px;
  left: calc(52px - 24px - 4px - 4px);
  background: var(--md-sys-color-on-primary);
}
.m3-switch-thumb .switch-check {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  display: block;
  opacity: 0;
  transform: scale(0.4);
  transition: opacity 150ms ease 160ms, transform 150ms var(--motion-spring) 160ms;
  pointer-events: none;
  color: var(--md-sys-color-primary);
}
.m3-switch-thumb .switch-check path { fill: currentColor; }
.m3-switch.on .m3-switch-thumb .switch-check {
  opacity: 1;
  transform: scale(1);
}

.m3-select {
  background: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--shape-sm);
  padding: 6px 10px;
  font-family: 'Google Sans Flex', sans-serif;
  font-size: 13px;
  color: var(--md-sys-color-on-surface);
  outline: none;
  cursor: pointer;
}
.m3-select:focus { border-color: var(--md-sys-color-primary); }

.theme-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 12px 16px;
}
.theme-pill {
  padding: 6px 14px;
  border-radius: var(--shape-full);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--motion-duration-short) var(--motion-spring);
  -webkit-tap-highlight-color: transparent;
}
.theme-pill.active {
  border-color: var(--md-sys-color-primary);
  background: rgba(122,216,191,0.10);
  color: var(--md-sys-color-primary);
}

#snackbar {
  position: fixed;
  bottom: calc(80px + env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--md-sys-color-inverse-surface);
  color: var(--md-sys-color-inverse-on-surface);
  padding: 12px 20px;
  border-radius: var(--shape-sm);
  font-size: 13px;
  font-weight: 500;
  box-shadow: var(--elev-3);
  z-index: 200;
  opacity: 0;
  transition: opacity var(--motion-duration-short) var(--motion-standard),
              transform var(--motion-duration-short) var(--motion-spring);
  pointer-events: none;
  white-space: nowrap;
  max-width: calc(100vw - 32px);
  text-align: center;
}
#snackbar.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--md-sys-color-outline-variant);
  border-radius: 2px;
}

.skulpt-loading {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 13px;
}
.loader-ring {
  width: 20px;
  height: 20px;
  border: 2px solid var(--md-sys-color-outline-variant);
  border-top-color: var(--md-sys-color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.kbd-hint {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  color: var(--md-sys-color-on-surface-variant);
}
.kbd {
  background: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--shape-xs);
  padding: 1px 5px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  color: var(--md-sys-color-on-surface-variant);
}

.editor-wrapper textarea { caret-color: var(--md-sys-color-primary); }

.export-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  border: none;
  border-radius: var(--shape-full);
  padding: 10px 20px;
  font-family: 'Google Sans Flex', sans-serif;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  justify-content: center;
  margin-bottom: 8px;
  transition: transform var(--motion-duration-short) var(--motion-spring),
              background var(--motion-duration-short);
  -webkit-tap-highlight-color: transparent;
}
.export-btn:active { transform: scale(0.96); }
.export-btn.primary-btn {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.clear-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--md-sys-color-error);
  border: 1px solid var(--md-sys-color-error);
  border-radius: var(--shape-full);
  padding: 10px 20px;
  font-family: 'Google Sans Flex', sans-serif;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  justify-content: center;
  transition: transform var(--motion-duration-short) var(--motion-spring),
              background var(--motion-duration-short);
  -webkit-tap-highlight-color: transparent;
}
.clear-btn:active {
  transform: scale(0.96);
  background: rgba(242,184,181,0.1);
}

@media (min-width: 600px) {
  .brand-name { font-size: 20px; }
  #code-input, .highlight-layer { font-size: 14px; }
  #output { font-size: 13px; }
  .run-fab {
    width: 64px;
    height: 64px;
    font-size: 28px;
    bottom: calc(80px + env(safe-area-inset-bottom));
  }
}

/* ============ DESKTOP LAYOUT ============
   Top bar stays put. Bottom tab bar becomes a left sidebar.
   Editor + Console go side by side with a draggable vertical divider.
   FAB moves to bottom-right, clear of the sidebar. */
@media (min-width: 900px) {

  .app-shell { flex-direction: row; flex-wrap: wrap; }

  .top-bar { width: 100%; order: 1; }

  .bottom-nav {
    order: 2;
    flex-direction: column;
    justify-content: flex-start;
    width: 88px;
    height: 100%;
    padding: 16px 0;
    gap: 4px;
    border-top: none;
    border-right: 1px solid var(--md-sys-color-outline-variant);
    flex-shrink: 0;
  }
  .nav-item { flex: none; width: 100%; padding: 10px 4px; }
  .nav-indicator { width: 64px; height: 40px; }

  #panel-editor.panel.active,
  #panel-export.panel.active,
  #panel-settings.panel.active {
    order: 3;
    display: flex;
    flex: 1;
    min-width: 0;
    height: calc(100% - 0px);
    overflow: hidden;
  }

  #panel-export.panel.active,
  #panel-settings.panel.active { overflow-y: auto; display: block; }

  #panel-editor.panel.active { flex-direction: row; }

  .editor-section {
    flex: 1 1 55%;
    min-width: 240px;
    height: 100%;
  }

  .resize-handle {
    height: auto;
    width: 6px;
    cursor: ew-resize;
    flex-shrink: 0;
  }
  .resize-handle::after {
    width: 3px;
    height: 32px;
  }
  .resize-handle:hover::after,
  .resize-handle.dragging::after { height: 48px; width: 3px; }

  .output-section {
    border-top: none;
    border-left: 1px solid var(--md-sys-color-outline-variant);
    height: 100% !important;
    max-height: none;
    flex: 1 1 45%;
    min-width: 220px;
  }

  .run-fab {
    right: 24px;
    bottom: 24px;
  }

  /* Console never auto-collapses on desktop — it's a permanent column */
  .console-fab { display: none !important; }
}