@import "tailwindcss";
@import "@xterm/xterm/css/xterm.css";
@plugin "@tailwindcss/typography";

/* ─── Self-hosted fonts (no Google CDN dependency) ────────────── */

/* Inter – variable weight 400-600, latin */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url('/fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url('/fonts/inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* Manrope – variable weight 400-800, latin */
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('/fonts/manrope-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Manrope';
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
  src: url('/fonts/manrope-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* JetBrains Mono – weight 400, latin */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/jetbrains-mono-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/jetbrains-mono-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* Material Symbols Outlined – variable weight, use block to avoid showing raw text */
@font-face {
  font-family: 'Material Symbols Outlined';
  font-style: normal;
  font-weight: 100 700;
  font-display: block;
  src: url('/fonts/material-symbols-outlined.woff2') format('woff2');
}

.code-viewer-area .line,
.code-viewer-area .token-line {
  display: block;
}

.code-viewer-area .line {
  padding: 0 12px;
}

.code-viewer-area .has-line-numbers .line {
  padding-left: 12px;
}

.code-viewer-area .line:hover,
.code-viewer-area .token-line:hover {
  background: var(--color-surface-hover);
}

.code-viewer-area .has-line-numbers,
.code-viewer-area .rs-has-line-numbers {
  counter-reset: line-number calc(var(--line-start, 1) - 1);
  --line-numbers-foreground: var(--color-text-tertiary);
  --line-numbers-width: 2.5ch;
  --line-numbers-padding-left: 0;
  --line-numbers-padding-right: 0;
  --line-numbers-font-size: 11px;
  --rs-line-numbers-foreground: var(--line-numbers-foreground);
  --rs-line-numbers-width: var(--line-numbers-width);
  --rs-line-numbers-padding-left: var(--line-numbers-padding-left);
  --rs-line-numbers-padding-right: var(--line-numbers-padding-right);
  --rs-line-numbers-font-size: var(--line-numbers-font-size);
}

.code-viewer-area .line-numbers::before,
.code-viewer-area .rs-line-number::before {
  content: counter(line-number);
  counter-increment: line-number;
  display: inline-flex;
  justify-content: flex-end;
  box-sizing: content-box;
  min-width: var(--rs-line-numbers-width);
  padding-left: var(--rs-line-numbers-padding-left);
  padding-right: var(--rs-line-numbers-padding-right);
  color: var(--rs-line-numbers-foreground);
  font-size: var(--rs-line-numbers-font-size);
  user-select: none;
  pointer-events: none;
  margin-right: 1.5ch;
}

.settings-terminal-host .xterm {
  height: 100%;
  padding: 0;
}

.settings-terminal-host .xterm-viewport {
  scrollbar-color: rgba(215, 210, 208, 0.35) transparent;
}

.settings-terminal-host .xterm-screen {
  outline: none;
}

.settings-zoom-kbd {
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border: 1px solid var(--color-border);
  border-radius: 5px;
  background: var(--color-surface-container-lowest);
  color: var(--color-text-secondary);
  font-family: var(--font-label);
  font-size: 10px;
  font-weight: 600;
  line-height: 16px;
  text-align: center;
  box-shadow: inset 0 -1px 0 rgba(27, 28, 26, 0.08);
}

.settings-zoom-control {
  --settings-zoom-range-progress: 33.333%;
  --settings-zoom-preview-scale: 0.88;
  --settings-zoom-preview-opacity: 0;
  --settings-zoom-track-empty: var(--color-surface-container-high);
  --settings-zoom-thumb-bg: var(--color-surface-container-lowest);
  --settings-zoom-thumb-border: var(--color-border);
  --settings-zoom-thumb-shadow: 0 2px 8px rgba(27, 28, 26, 0.16);
  padding-top: 22px;
}

[data-theme="dark"] .settings-zoom-control {
  --settings-zoom-track-empty: var(--color-surface-container-highest);
  --settings-zoom-thumb-bg: var(--color-surface-bright);
  --settings-zoom-thumb-border: rgba(255, 181, 159, 0.78);
  --settings-zoom-thumb-shadow: 0 0 0 3px rgba(255, 181, 159, 0.16), 0 10px 24px rgba(0, 0, 0, 0.5);
}

.settings-zoom-control.is-dragging {
  --settings-zoom-preview-scale: 1;
  --settings-zoom-preview-opacity: 1;
}

.settings-zoom-range-wrap {
  position: relative;
}

.settings-zoom-preview {
  position: absolute;
  left: clamp(24px, var(--settings-zoom-range-progress), calc(100% - 24px));
  top: -30px;
  z-index: 1;
  min-width: 52px;
  transform: translateX(-50%) scale(var(--settings-zoom-preview-scale));
  transform-origin: 50% 100%;
  border: 1px solid var(--color-surface-glass-border);
  border-radius: 999px;
  background: var(--color-surface-glass);
  padding: 4px 9px;
  color: var(--color-text-primary);
  font-size: 12px;
  font-weight: 700;
  line-height: 16px;
  text-align: center;
  opacity: var(--settings-zoom-preview-opacity);
  box-shadow: var(--shadow-dropdown);
  backdrop-filter: blur(14px) saturate(1.15);
  -webkit-backdrop-filter: blur(14px) saturate(1.15);
  pointer-events: none;
  transition:
    left 260ms cubic-bezier(0.22, 1, 0.36, 1),
    opacity 160ms ease,
    transform 220ms cubic-bezier(0.22, 1, 0.36, 1);
}

.settings-zoom-preview::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -4px;
  width: 8px;
  height: 8px;
  transform: translateX(-50%) rotate(45deg);
  border-right: 1px solid var(--color-surface-glass-border);
  border-bottom: 1px solid var(--color-surface-glass-border);
  background: var(--color-surface-glass);
}

.settings-zoom-range {
  appearance: none;
  display: block;
  height: 20px;
  cursor: pointer;
  background: transparent;
  accent-color: var(--color-brand);
  touch-action: none;
}

.settings-zoom-range:focus {
  outline: none;
}

.settings-zoom-range:focus-visible {
  outline: none;
}

.settings-zoom-range::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background:
    linear-gradient(
      90deg,
      var(--color-brand) 0%,
      var(--color-brand) var(--settings-zoom-range-progress),
      var(--settings-zoom-track-empty) var(--settings-zoom-range-progress),
      var(--settings-zoom-track-empty) 100%
    );
  transition: background 220ms ease, border-color 180ms ease;
}

.settings-zoom-range::-webkit-slider-thumb {
  appearance: none;
  width: 18px;
  height: 18px;
  margin-top: -7px;
  border-radius: 999px;
  border: 1px solid var(--settings-zoom-thumb-border);
  background: var(--settings-zoom-thumb-bg);
  box-shadow: var(--settings-zoom-thumb-shadow);
  transition: border-color 180ms ease, box-shadow 220ms ease, transform 220ms cubic-bezier(0.22, 1, 0.36, 1);
}

.settings-zoom-range:hover::-webkit-slider-thumb {
  border-color: var(--color-border-focus);
}

.settings-zoom-control.is-dragging .settings-zoom-range::-webkit-slider-thumb {
  transform: scale(1.18);
  border-color: var(--color-brand);
  box-shadow: var(--shadow-dropdown);
}

.settings-zoom-range:focus-visible::-webkit-slider-thumb {
  border-color: var(--color-brand);
  box-shadow: var(--shadow-focus-ring), 0 2px 8px rgba(27, 28, 26, 0.16);
}

.settings-zoom-range::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--settings-zoom-track-empty);
  transition: background 220ms ease, border-color 180ms ease;
}

.settings-zoom-range::-moz-range-progress {
  height: 6px;
  border-radius: 999px;
  background: var(--color-brand);
}

.settings-zoom-range::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 1px solid var(--settings-zoom-thumb-border);
  background: var(--settings-zoom-thumb-bg);
  box-shadow: var(--settings-zoom-thumb-shadow);
  transition: border-color 180ms ease, box-shadow 220ms ease, transform 220ms cubic-bezier(0.22, 1, 0.36, 1);
}

.settings-zoom-control.is-dragging .settings-zoom-range::-moz-range-thumb {
  transform: scale(1.18);
  border-color: var(--color-brand);
  box-shadow: var(--shadow-dropdown);
}

.settings-zoom-range:focus-visible::-moz-range-thumb {
  border-color: var(--color-brand);
  box-shadow: var(--shadow-focus-ring), 0 2px 8px rgba(27, 28, 26, 0.16);
}

@media (prefers-reduced-motion: reduce) {
  .settings-zoom-preview,
  .settings-zoom-range::-webkit-slider-runnable-track,
  .settings-zoom-range::-webkit-slider-thumb,
  .settings-zoom-range::-moz-range-track,
  .settings-zoom-range::-moz-range-thumb {
    transition-duration: 0.01ms !important;
  }
}

/* ─── Tailwind Theme Override (matches prototype design system) ─── */
@theme {
  --color-primary: #8F482F;
  --color-primary-container: #AD5F45;
  --color-primary-fixed: #FFDBD0;
  --color-primary-fixed-dim: #FFB59D;

  --color-on-primary: #FFFFFF;
  --color-on-surface: #1B1C1A;
  --color-on-surface-variant: #54433E;

  --color-surface: #FAF9F5;
  --color-surface-bright: #FAF9F5;
  --color-surface-dim: #DBDAD6;
  --color-surface-container: #EFEEEA;
  --color-surface-container-low: #F4F4F0;
  --color-surface-container-high: #E9E8E4;
  --color-surface-container-highest: #E3E2DF;
  --color-surface-container-lowest: #FFFFFF;
  --color-surface-variant: #E3E2DF;

  --color-background: #FAF9F5;

  --color-outline: #87736D;
  --color-outline-variant: #DAC1BA;

  --color-secondary: #2D628F;
  --color-secondary-container: #9ACBFE;
  --color-tertiary: #4F6237;
  --color-tertiary-container: #677B4E;

  --color-error: #BA1A1A;
  --color-error-container: #FFDAD6;
  --color-on-error-container: #410002;

  --color-inverse-surface: #2F312E;
  --color-inverse-on-surface: #F2F1ED;
  --color-inverse-primary: #FFB59D;

  --color-success: #16A34A;
  --color-success-container: #E8F5E2;
  --color-info: #2D628F;
  --color-info-container: #E4F1FF;
  --color-warning: #CA8A04;
  --color-warning-container: #FFF3D6;

  --font-headline: 'Manrope', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-label: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

/* ─── Semantic Aliases (used by layout & infrastructure components) ── */
:root,
[data-theme="light"] {
  color-scheme: light;

  /* Layout dimensions */
  --sidebar-width: 280px;
  --sidebar-rail-width: 72px;
  --titlebar-height: 40px;
  --statusbar-height: 36px;
  --motion-sidebar-duration: 280ms;
  --motion-sidebar-easing: cubic-bezier(0.22, 1, 0.36, 1);

  /* Surface aliases */
  --color-surface-sidebar: var(--color-surface-container-low);
  --color-surface-hover: var(--color-surface-container-high);
  --color-surface-selected: var(--color-surface-container);
  --color-memory-accent: #3B7068;
  --color-memory-surface: #F6FAF8;
  --color-memory-border: #BCCDC8;
  --color-memory-icon-bg: #F3F8F7;
  --color-goal-accent: var(--color-memory-accent);
  --color-goal-surface: var(--color-memory-surface);
  --color-goal-border: var(--color-memory-border);
  --color-goal-icon-bg: var(--color-memory-icon-bg);
  --color-goal-chip-bg: var(--color-surface);
  --color-goal-chip-border: var(--color-border);
  --color-model-option-selected-bg: var(--color-primary-fixed);
  --color-model-option-selected-border: rgba(143, 72, 47, 0.2);
  --color-activity-heat-0: var(--color-surface-container);
  --color-activity-heat-1: #FBE9E2;
  --color-activity-heat-2: var(--color-primary-fixed);
  --color-activity-heat-3: var(--color-primary-fixed-dim);
  --color-activity-heat-4: var(--color-primary);
  --color-activity-cell-border: rgba(135, 115, 109, 0.3);
  --color-activity-cell-border-hover: rgba(143, 72, 47, 0.58);
  --color-activity-cell-border-active: var(--color-text-primary);
  --shadow-activity-cell-hover: 0 0 0 2px rgba(143, 72, 47, 0.12), 0 8px 18px rgba(65, 54, 48, 0.16);
  --color-activity-tooltip-surface: #2F312E;
  --color-activity-tooltip-border: rgba(255, 255, 255, 0.12);
  --color-activity-tooltip-text: #F2F1ED;
  --color-activity-tooltip-muted: #FFB59D;
  --color-success-container: #E8F5E2;
  --color-info: #2D628F;
  --color-info-container: #E4F1FF;
  --color-warning-container: #FFF3D6;
  --color-inspector-surface: #FBFAF6;
  --color-inspector-panel: #F4F2ED;
  --color-inspector-chip: #EBE7DF;
  --color-inspector-border: #D8B3A8;
  --color-inspector-accent: #8F3217;
  --color-inspector-accent-hover: #5B1E0D;
  --color-inspector-accent-secondary: #0F5C8F;
  --color-inspector-text: #1F1713;
  --color-inspector-heading: #2B1B15;
  --color-inspector-muted: #7B665F;
  --color-inspector-muted-strong: #5F514C;
  --color-inspector-success: #25451B;
  --color-inspector-success-bg: #D8F2B6;
  --color-inspector-danger: #C51616;
  --color-inspector-danger-bg: #FFD9D3;
  --color-inspector-danger-surface: #FFF7F5;
  --color-inspector-danger-border: #F1B8B0;
  --color-inspector-capacity: #9B928C;
  --shadow-inspector: 0 28px 80px rgba(65, 54, 48, 0.22);
  --color-switch-checked-bg: #90C1F7;
  --color-switch-thumb: #FFFFFF;
  --color-sidebar-filter-bg: transparent;
  --color-sidebar-filter-border: rgba(218, 193, 186, 0.92);
  --color-sidebar-filter-icon-bg: transparent;
  --color-sidebar-search-bg: rgba(255, 255, 255, 0.78);
  --color-sidebar-search-border: rgba(218, 193, 186, 0.88);
  --color-sidebar-item-hover: rgba(239, 238, 234, 0.82);
  --color-sidebar-item-active: rgba(239, 238, 234, 0.94);
  --color-sidebar-item-active-border: rgba(143, 72, 47, 0.12);
  --sidebar-panel-bg-image: none;

  /* Border aliases */
  --color-border: var(--color-outline-variant);
  --color-border-focus: #8B98A7;
  --color-border-separator: var(--color-outline-variant);

  /* Text aliases */
  --color-text-primary: var(--color-on-surface);
  --color-text-secondary: var(--color-on-surface-variant);
  --color-text-tertiary: var(--color-outline);

  /* Info surface (for team status bar, notifications) */
  --color-surface-info: var(--color-surface-container-low);

  /* Brand & accents */
  --color-brand: var(--color-primary);
  --color-text-accent: var(--color-secondary);

  /* Shadows */
  --shadow-dropdown: 0 4px 20px rgba(27, 28, 26, 0.04), 0 12px 40px rgba(27, 28, 26, 0.08);
  --shadow-sidebar-filter: none;
  --shadow-focus-ring: 0 0 0 1px rgba(143, 72, 47, 0.16);
  --shadow-error-ring: 0 0 0 1px rgba(186, 26, 26, 0.18);
  --shadow-button-primary: 0 8px 24px rgba(143, 72, 47, 0.18);

  /* Button colors */
  --color-btn-primary-fg: var(--color-on-primary);
  --gradient-btn-primary: linear-gradient(135deg, var(--color-primary), var(--color-primary-container));
  --gradient-btn-primary-hover: linear-gradient(135deg, var(--color-primary-container), var(--color-primary));

  /* User message bubble */
  --color-surface-user-msg: var(--color-surface-container);

  /* Glass / overlays */
  --color-overlay-scrim: rgba(27, 28, 26, 0.48);
  --color-surface-glass: rgba(255, 255, 255, 0.84);
  --color-surface-glass-border: rgba(218, 193, 186, 0.22);

  /* Code + diff */
  --color-code-bg: #FDFCF9;
  --color-code-fg: #24201E;
  --color-code-comment: #5C6B7A;
  --color-code-string: #437220;
  --color-code-keyword: #B8533B;
  --color-code-function: #1D5A8C;
  --color-code-number: #1B7A6A;
  --color-code-property: #7A3E20;
  --color-code-type: #7E5520;
  --color-code-parameter: #5C3D2E;
  --color-code-punctuation: #5C504A;
  --color-code-inserted: #1A7F37;
  --color-code-deleted: #CF222E;

  --color-diff-added-bg: #E8F5E2;
  --color-diff-added-word: #B8E4A8;
  --color-diff-added-gutter: #D4EDCA;
  --color-diff-added-text: #1A7F37;
  --color-diff-removed-bg: #FDECEA;
  --color-diff-removed-word: #F5B8B4;
  --color-diff-removed-gutter: #F9D4D0;
  --color-diff-removed-text: #CF222E;
  --color-diff-highlight-bg: #FFF5D6;
  --color-diff-highlight-gutter: #FFECB3;
  --color-diff-title-bg: #F4F4F0;
  --color-diff-title-color: #87736D;
  --color-diff-title-border: #DAC1BA;

  /* Terminal */
  --color-terminal-header: #2D2D2D;
  --color-terminal-bg: #1E1E1E;
  --color-terminal-border: #1A1A1A;
  --color-terminal-fg: #D4D4D4;
  --color-terminal-muted: #999999;
  --color-terminal-accent: #28C840;
  --color-terminal-danger: #FF5F57;
  --color-terminal-warning: #FEBC2E;

  /* Misc */
  --color-window-close-hover: #E81123;
  --color-selection-bg: rgba(255, 219, 208, 0.9);
  --color-selection-fg: #390C00;
  --color-text-secondary-a72: rgba(84, 67, 62, 0.72);
  --color-text-secondary-a68: rgba(84, 67, 62, 0.68);
  --color-text-primary-a88: rgba(27, 28, 26, 0.88);
  --color-text-primary-a82: rgba(27, 28, 26, 0.82);
  --color-text-primary-a78: rgba(27, 28, 26, 0.78);
  --color-surface-hover-a34: rgba(233, 232, 228, 0.34);
  --color-surface-hover-a54: rgba(233, 232, 228, 0.54);
  --color-outline-a72: rgba(135, 115, 109, 0.72);
  --color-outline-a78: rgba(135, 115, 109, 0.78);
  --color-outline-a92: rgba(135, 115, 109, 0.92);

  /* Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
}

[data-theme="white"] {
  color-scheme: light;

  --color-primary: #8F482F;
  --color-primary-container: #AD5F45;
  --color-primary-fixed: #FFDBD0;
  --color-primary-fixed-dim: #FFB59D;

  --color-on-primary: #FFFFFF;
  --color-on-surface: #111827;
  --color-on-surface-variant: #4B5563;

  --color-surface: #FFFFFF;
  --color-surface-bright: #FFFFFF;
  --color-surface-dim: #EFF3F6;
  --color-surface-container: #F6F8FA;
  --color-surface-container-low: #F9FAFB;
  --color-surface-container-high: #EEF2F6;
  --color-surface-container-highest: #E6EBF0;
  --color-surface-container-lowest: #FFFFFF;
  --color-surface-variant: #EDF1F5;
  --color-background: #FFFFFF;

  --color-outline: #8B98A7;
  --color-outline-variant: #DDE3EA;

  --color-secondary: #2D628F;
  --color-secondary-container: #D9ECFF;
  --color-tertiary: #4F6237;
  --color-tertiary-container: #E2F1D1;

  --color-error: #B42318;
  --color-error-container: #FEE4E2;
  --color-on-error-container: #7A271A;

  --color-inverse-surface: #111827;
  --color-inverse-on-surface: #F9FAFB;
  --color-inverse-primary: #FFB59D;

  --color-success: #087E4F;
  --color-success-container: #DCFAE6;
  --color-info: #0F5C8F;
  --color-info-container: #D9ECFF;
  --color-warning: #B54708;
  --color-warning-container: #FEF0C7;

  --color-surface-sidebar: #F1F4F7;
  --color-surface-hover: #F2F5F8;
  --color-surface-selected: #E9EEF3;
  --color-memory-accent: #0F766E;
  --color-memory-surface: #F3F8F7;
  --color-memory-border: #AECBC9;
  --color-memory-icon-bg: #EDF7F6;
  --color-goal-accent: var(--color-memory-accent);
  --color-goal-surface: var(--color-memory-surface);
  --color-goal-border: var(--color-memory-border);
  --color-goal-icon-bg: var(--color-memory-icon-bg);
  --color-goal-chip-bg: var(--color-surface);
  --color-goal-chip-border: var(--color-border);
  --color-model-option-selected-bg: #FFF0EA;
  --color-model-option-selected-border: rgba(143, 72, 47, 0.2);
  --color-activity-heat-0: #EEF2F6;
  --color-activity-heat-1: #FFF0EA;
  --color-activity-heat-2: var(--color-primary-fixed);
  --color-activity-heat-3: var(--color-primary-fixed-dim);
  --color-activity-heat-4: var(--color-primary);
  --color-activity-cell-border: rgba(139, 152, 167, 0.32);
  --color-activity-cell-border-hover: rgba(143, 72, 47, 0.55);
  --color-activity-cell-border-active: var(--color-text-primary);
  --shadow-activity-cell-hover: 0 0 0 2px rgba(143, 72, 47, 0.11), 0 8px 18px rgba(15, 23, 42, 0.14);
  --color-activity-tooltip-surface: #111827;
  --color-activity-tooltip-border: rgba(255, 255, 255, 0.14);
  --color-activity-tooltip-text: #F9FAFB;
  --color-activity-tooltip-muted: #FFB59D;
  --color-inspector-surface: #FFFFFF;
  --color-inspector-panel: #F7F9FB;
  --color-inspector-chip: #EEF3F6;
  --color-inspector-border: #DDE3EA;
  --color-inspector-accent: #8F482F;
  --color-inspector-accent-hover: #6F3420;
  --color-inspector-accent-secondary: #0F5C8F;
  --color-inspector-text: #111827;
  --color-inspector-heading: #0F172A;
  --color-inspector-muted: #64748B;
  --color-inspector-muted-strong: #475569;
  --color-inspector-success: #067647;
  --color-inspector-success-bg: #DCFAE6;
  --color-inspector-danger: #B42318;
  --color-inspector-danger-bg: #FEE4E2;
  --color-inspector-danger-surface: #FFFFFF;
  --color-inspector-danger-border: #DDE3EA;
  --color-inspector-capacity: #94A3B8;
  --shadow-inspector: 0 28px 80px rgba(15, 23, 42, 0.14);
  --color-switch-checked-bg: #90C1F7;
  --color-switch-thumb: #FFFFFF;
  --color-sidebar-filter-bg: #FFFFFF;
  --color-sidebar-filter-border: rgba(203, 213, 225, 0.92);
  --color-sidebar-filter-icon-bg: transparent;
  --color-sidebar-search-bg: rgba(255, 255, 255, 0.9);
  --color-sidebar-search-border: rgba(203, 213, 225, 0.88);
  --color-sidebar-item-hover: rgba(255, 255, 255, 0.78);
  --color-sidebar-item-active: rgba(255, 255, 255, 0.94);
  --color-sidebar-item-active-border: rgba(143, 72, 47, 0.16);
  --sidebar-panel-bg-image: none;

  --color-border: #DDE3EA;
  --color-border-focus: var(--color-primary);
  --color-border-separator: #E5EAF0;

  --color-text-primary: var(--color-on-surface);
  --color-text-secondary: var(--color-on-surface-variant);
  --color-text-tertiary: #7B8794;

  --color-surface-info: #F6F8FA;
  --color-brand: var(--color-primary);
  --color-text-accent: var(--color-secondary);

  --shadow-dropdown: 0 8px 24px rgba(15, 23, 42, 0.06), 0 24px 60px rgba(15, 23, 42, 0.08);
  --shadow-sidebar-filter: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-focus-ring: 0 0 0 1px rgba(139, 152, 167, 0.42), 0 0 0 4px rgba(221, 227, 234, 0.56);
  --shadow-error-ring: 0 0 0 1px rgba(180, 35, 24, 0.22), 0 0 0 4px rgba(254, 228, 226, 0.86);
  --shadow-button-primary: 0 10px 24px rgba(143, 72, 47, 0.18);

  --color-btn-primary-fg: var(--color-on-primary);
  --gradient-btn-primary: linear-gradient(135deg, var(--color-primary), var(--color-primary-container));
  --gradient-btn-primary-hover: linear-gradient(135deg, var(--color-primary-container), var(--color-primary));

  --color-surface-user-msg: #F1F4F7;

  --color-overlay-scrim: rgba(15, 23, 42, 0.42);
  --color-surface-glass: rgba(255, 255, 255, 0.94);
  --color-surface-glass-border: rgba(203, 213, 225, 0.72);

  --color-code-bg: #FAFBFC;
  --color-code-fg: #1F2937;
  --color-code-comment: #6B7280;
  --color-code-string: #16794C;
  --color-code-keyword: #B42318;
  --color-code-function: #1D4ED8;
  --color-code-number: #0F766E;
  --color-code-property: #92400E;
  --color-code-type: #6D28D9;
  --color-code-parameter: #334155;
  --color-code-punctuation: #64748B;
  --color-code-inserted: #067647;
  --color-code-deleted: #B42318;

  --color-diff-added-bg: #ECFDF3;
  --color-diff-added-word: #ABEFC6;
  --color-diff-added-gutter: #D1FADF;
  --color-diff-added-text: #067647;
  --color-diff-removed-bg: #FEF3F2;
  --color-diff-removed-word: #FECDCA;
  --color-diff-removed-gutter: #FEE4E2;
  --color-diff-removed-text: #B42318;
  --color-diff-highlight-bg: #FFFAEB;
  --color-diff-highlight-gutter: #FEF0C7;
  --color-diff-title-bg: #F6F8FA;
  --color-diff-title-color: #667085;
  --color-diff-title-border: #DDE3EA;

  --color-terminal-header: #1F2937;
  --color-terminal-bg: #111827;
  --color-terminal-border: #0F172A;
  --color-terminal-fg: #E5E7EB;
  --color-terminal-muted: #9CA3AF;
  --color-terminal-accent: #32D583;
  --color-terminal-danger: #F97066;
  --color-terminal-warning: #FDB022;

  --color-window-close-hover: #E5484D;
  --color-selection-bg: rgba(255, 219, 208, 0.9);
  --color-selection-fg: #390C00;
  --color-text-secondary-a72: rgba(75, 85, 99, 0.72);
  --color-text-secondary-a68: rgba(75, 85, 99, 0.68);
  --color-text-primary-a88: rgba(17, 24, 39, 0.88);
  --color-text-primary-a82: rgba(17, 24, 39, 0.82);
  --color-text-primary-a78: rgba(17, 24, 39, 0.78);
  --color-surface-hover-a34: rgba(241, 244, 247, 0.34);
  --color-surface-hover-a54: rgba(241, 244, 247, 0.54);
  --color-outline-a72: rgba(139, 152, 167, 0.72);
  --color-outline-a78: rgba(139, 152, 167, 0.78);
  --color-outline-a92: rgba(139, 152, 167, 0.92);
}

[data-theme="dark"] {
  color-scheme: dark;

  --color-primary: #FFB59F;
  --color-primary-container: #FF6E40;
  --color-primary-fixed: #FFD9CF;
  --color-primary-fixed-dim: #FFB59F;

  --color-on-primary: #2C120B;
  --color-on-surface: #E5E2E1;
  --color-on-surface-variant: #B7AAA5;

  --color-surface: #131313;
  --color-surface-bright: #201F1F;
  --color-surface-dim: #0E0E0E;
  --color-surface-container: #201F1F;
  --color-surface-container-low: #1C1B1B;
  --color-surface-container-high: #2A2929;
  --color-surface-container-highest: #353534;
  --color-surface-container-lowest: #0E0E0E;
  --color-surface-variant: #252120;
  --color-background: #0E0E0E;

  --color-outline: #8D7F7A;
  --color-outline-variant: #5A4138;

  --color-secondary: #CDBDFF;
  --color-secondary-container: #3A3050;
  --color-tertiary: #00DAF3;
  --color-tertiary-container: #003D44;

  --color-error: #FFB4AB;
  --color-error-container: #93000A;
  --color-on-error-container: #FFDAD6;

  --color-inverse-surface: #E5E2E1;
  --color-inverse-on-surface: #1B1C1A;
  --color-inverse-primary: #8F482F;

  --color-success: #7EDB8B;
  --color-success-container: rgba(126, 219, 139, 0.16);
  --color-info: #74E0F7;
  --color-info-container: rgba(116, 224, 247, 0.16);
  --color-warning: #F7C46C;
  --color-warning-container: rgba(247, 196, 108, 0.16);

  --color-surface-sidebar: #171615;
  --color-surface-hover: var(--color-surface-container-highest);
  --color-surface-selected: var(--color-surface-container);
  --color-memory-accent: #7DD3C7;
  --color-memory-surface: #1D2423;
  --color-memory-border: #334743;
  --color-memory-icon-bg: #22302E;
  --color-goal-accent: var(--color-memory-accent);
  --color-goal-surface: var(--color-memory-surface);
  --color-goal-border: var(--color-memory-border);
  --color-goal-icon-bg: var(--color-memory-icon-bg);
  --color-goal-chip-bg: var(--color-surface-container-low);
  --color-goal-chip-border: var(--color-border);
  --color-model-option-selected-bg: rgba(255, 181, 159, 0.13);
  --color-model-option-selected-border: rgba(255, 181, 159, 0.34);
  --color-activity-heat-0: #242322;
  --color-activity-heat-1: #3A2823;
  --color-activity-heat-2: #674032;
  --color-activity-heat-3: #A76549;
  --color-activity-heat-4: var(--color-primary);
  --color-activity-cell-border: rgba(229, 226, 225, 0.08);
  --color-activity-cell-border-hover: rgba(255, 181, 159, 0.58);
  --color-activity-cell-border-active: #FBE7E1;
  --shadow-activity-cell-hover: 0 0 0 2px rgba(255, 181, 159, 0.16), 0 8px 18px rgba(0, 0, 0, 0.34);
  --color-activity-tooltip-surface: #F2F1ED;
  --color-activity-tooltip-border: rgba(255, 181, 159, 0.36);
  --color-activity-tooltip-text: #1B1C1A;
  --color-activity-tooltip-muted: #8F482F;
  --color-inspector-surface: #131211;
  --color-inspector-panel: #1C1B1B;
  --color-inspector-chip: #252120;
  --color-inspector-border: rgba(255, 181, 159, 0.18);
  --color-inspector-accent: #FFB59F;
  --color-inspector-accent-hover: #FFD4C8;
  --color-inspector-accent-secondary: #74E0F7;
  --color-inspector-text: #E5E2E1;
  --color-inspector-heading: #F3D6CC;
  --color-inspector-muted: #A89A95;
  --color-inspector-muted-strong: #C5B8B2;
  --color-inspector-success: #7EDB8B;
  --color-inspector-success-bg: rgba(126, 219, 139, 0.16);
  --color-inspector-danger: #FFB4AB;
  --color-inspector-danger-bg: rgba(255, 180, 171, 0.16);
  --color-inspector-danger-surface: rgba(255, 180, 171, 0.08);
  --color-inspector-danger-border: rgba(255, 180, 171, 0.22);
  --color-inspector-capacity: #8F8683;
  --shadow-inspector: 0 28px 80px rgba(0, 0, 0, 0.58);
  --color-switch-checked-bg: rgba(116, 224, 247, 0.36);
  --color-switch-thumb: #E5E2E1;
  --color-sidebar-filter-bg: rgba(255, 255, 255, 0.01);
  --color-sidebar-filter-border: rgba(255, 255, 255, 0.08);
  --color-sidebar-filter-icon-bg: transparent;
  --color-sidebar-search-bg: rgba(255, 255, 255, 0.03);
  --color-sidebar-search-border: rgba(255, 255, 255, 0.06);
  --color-sidebar-item-hover: rgba(255, 255, 255, 0.04);
  --color-sidebar-item-active: rgba(255, 255, 255, 0.06);
  --color-sidebar-item-active-border: rgba(255, 181, 159, 0.14);
  --sidebar-panel-bg-image:
    radial-gradient(circle at top left, rgba(255, 181, 159, 0.045), transparent 34%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0));

  --color-border: rgba(90, 65, 56, 0.18);
  --color-border-focus: rgba(255, 181, 159, 0.55);
  --color-border-separator: rgba(90, 65, 56, 0.12);

  --color-text-primary: var(--color-on-surface);
  --color-text-secondary: var(--color-on-surface-variant);
  --color-text-tertiary: #8F827D;

  --color-surface-info: rgba(32, 31, 31, 0.88);
  --color-brand: var(--color-primary);
  --color-text-accent: var(--color-tertiary);

  --shadow-dropdown: 0 16px 40px rgba(0, 0, 0, 0.42);
  --shadow-sidebar-filter: none;
  --shadow-focus-ring: 0 0 0 1px rgba(255, 181, 159, 0.32);
  --shadow-error-ring: 0 0 0 1px rgba(255, 180, 171, 0.26);
  --shadow-button-primary: 0 12px 24px rgba(255, 110, 64, 0.18);

  --gradient-btn-primary: linear-gradient(135deg, var(--color-primary), var(--color-primary-container));
  --gradient-btn-primary-hover: linear-gradient(135deg, var(--color-primary-container), var(--color-primary));

  --color-surface-user-msg: rgba(32, 31, 31, 0.92);

  --color-overlay-scrim: rgba(6, 6, 6, 0.56);
  --color-surface-glass: rgba(32, 31, 31, 0.8);
  --color-surface-glass-border: rgba(90, 65, 56, 0.18);

  --color-code-bg: #0E0E0E;
  --color-code-fg: #E5E2E1;
  --color-code-comment: #8F8683;
  --color-code-string: #88C988;
  --color-code-keyword: #FF8F70;
  --color-code-function: #00DAF3;
  --color-code-number: #74E0F7;
  --color-code-property: #FFC9B8;
  --color-code-type: #CDBDFF;
  --color-code-parameter: #E5E2E1;
  --color-code-punctuation: #9B908C;
  --color-code-inserted: #8EEA9A;
  --color-code-deleted: #FFB59F;

  --color-diff-added-bg: rgba(126, 219, 139, 0.12);
  --color-diff-added-word: rgba(126, 219, 139, 0.22);
  --color-diff-added-gutter: rgba(126, 219, 139, 0.18);
  --color-diff-added-text: #8EEA9A;
  --color-diff-removed-bg: rgba(255, 110, 64, 0.12);
  --color-diff-removed-word: rgba(255, 110, 64, 0.24);
  --color-diff-removed-gutter: rgba(255, 110, 64, 0.18);
  --color-diff-removed-text: #FFB59F;
  --color-diff-highlight-bg: rgba(205, 189, 255, 0.12);
  --color-diff-highlight-gutter: rgba(205, 189, 255, 0.16);
  --color-diff-title-bg: var(--color-surface-container-low);
  --color-diff-title-color: var(--color-text-tertiary);
  --color-diff-title-border: rgba(90, 65, 56, 0.15);

  --color-terminal-header: #242323;
  --color-terminal-bg: #121212;
  --color-terminal-border: #1A1919;
  --color-terminal-fg: #D7D2D0;
  --color-terminal-muted: #8F8683;
  --color-terminal-accent: #7EF18A;
  --color-terminal-danger: #FF6D67;
  --color-terminal-warning: #F8C55F;

  --color-window-close-hover: #C63B44;
  --color-selection-bg: rgba(255, 181, 159, 0.32);
  --color-selection-fg: #FBE7E1;
  --color-text-secondary-a72: rgba(183, 170, 165, 0.72);
  --color-text-secondary-a68: rgba(183, 170, 165, 0.68);
  --color-text-primary-a88: rgba(229, 226, 225, 0.88);
  --color-text-primary-a82: rgba(229, 226, 225, 0.82);
  --color-text-primary-a78: rgba(229, 226, 225, 0.78);
  --color-surface-hover-a34: rgba(53, 53, 52, 0.34);
  --color-surface-hover-a54: rgba(53, 53, 52, 0.54);
  --color-outline-a72: rgba(141, 127, 122, 0.72);
  --color-outline-a78: rgba(141, 127, 122, 0.78);
  --color-outline-a92: rgba(141, 127, 122, 0.92);
}

/* ─── Material Symbols ─────────────────────────────────────────── */
.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-feature-settings: 'liga';
  -webkit-font-smoothing: antialiased;
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  vertical-align: middle;
}

/* ─── Base styles ──────────────────────────────────────────────── */
* {
  box-sizing: border-box;
}

html, body, #root {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  color: var(--color-on-surface);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--color-selection-bg);
  color: var(--color-selection-fg);
}

/* Tauri drag region */
[data-tauri-drag-region] {
  -webkit-app-region: drag;
}
button, input, textarea, select, a, [role="button"] {
  -webkit-app-region: no-drag;
}
[draggable="true"] {
  -webkit-app-region: no-drag;
}
.tab-bar-hit-area,
.tab-bar-hit-area * {
  -webkit-app-region: no-drag;
}

/* Custom shadow from prototype */
.custom-shadow {
  box-shadow: var(--shadow-dropdown);
}

.glass-panel {
  background: var(--color-surface-glass);
  border: 1px solid var(--color-surface-glass-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-dropdown);
}

.glass-panel:focus-within {
  box-shadow: var(--shadow-focus-ring), var(--shadow-dropdown);
}

.composer-drop-target-active {
  border-color: var(--color-border-focus);
  box-shadow: var(--shadow-focus-ring), var(--shadow-dropdown);
}

.composer-drop-overlay {
  animation: composer-drop-fade 140ms ease-out, composer-drop-pulse 1.1s ease-in-out infinite;
}

@media (prefers-reduced-motion: reduce) {
  .composer-drop-overlay {
    animation: none;
  }
}

.app-shell-viewport {
  min-height: 100vh;
  min-height: 100dvh;
  height: 100vh;
  height: 100dvh;
}

.app-shell {
  position: relative;
  width: 100%;
  overflow-x: hidden;
}

.app-shell-backdrop {
  background: var(--color-overlay-scrim);
}

.sidebar-shell {
  width: var(--sidebar-width);
  flex-shrink: 0;
  overflow: hidden;
  transition: width var(--motion-sidebar-duration) var(--motion-sidebar-easing);
  will-change: width;
}

.sidebar-shell[data-state="closed"] {
  width: var(--sidebar-rail-width);
}

.app-shell--mobile .sidebar-shell {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 50;
  width: min(88vw, var(--sidebar-width));
  max-width: var(--sidebar-width);
  overflow: visible;
  transform: translateX(-100%);
  transition:
    transform var(--motion-sidebar-duration) var(--motion-sidebar-easing),
    width var(--motion-sidebar-duration) var(--motion-sidebar-easing);
}

.app-shell--mobile .sidebar-shell[data-state="closed"] {
  pointer-events: none;
}

.app-shell--mobile .sidebar-shell[data-state="open"] {
  transform: translateX(0);
  pointer-events: auto;
}

.sidebar-panel {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background-image: var(--sidebar-panel-bg-image);
  background-repeat: no-repeat;
  transition:
    background-color var(--motion-sidebar-duration) var(--motion-sidebar-easing),
    border-color var(--motion-sidebar-duration) var(--motion-sidebar-easing);
}

.sidebar-panel[data-state="closed"] {
  width: var(--sidebar-rail-width);
  min-width: var(--sidebar-rail-width);
}

.app-shell--mobile .sidebar-panel,
.app-shell--mobile .sidebar-panel[data-state="closed"] {
  width: min(88vw, var(--sidebar-width));
  min-width: min(88vw, var(--sidebar-width));
  box-shadow: var(--shadow-dropdown);
}

.sidebar-toggle-button {
  color: var(--color-text-secondary-a72);
  background: transparent;
  transition:
    color 180ms ease,
    background-color 180ms ease,
    transform 180ms ease;
  border: 0;
  box-shadow: none;
}

.sidebar-toggle-button:hover {
  color: var(--color-text-primary-a88);
  background: var(--color-surface-hover-a34);
}

.sidebar-toggle-button:active {
  transform: translateY(0.5px);
  background: var(--color-surface-hover-a54);
}

.sidebar-toggle-button--open {
  color: var(--color-text-secondary-a68);
}

.sidebar-toggle-button--open:hover {
  color: var(--color-text-primary-a82);
}

.sidebar-toggle-button--collapsed {
  color: var(--color-text-primary-a78);
}

.sidebar-toggle-button--collapsed:hover {
  color: var(--color-text-primary);
}

.sidebar-toggle-button--collapsed:active {
}

.sidebar-toggle-icon {
  overflow: visible;
}

.sidebar-toggle-chevron {
  stroke: currentColor;
  transition:
    opacity 180ms ease,
    transform 180ms ease;
  vector-effect: non-scaling-stroke;
}

.sidebar-toggle-chevron {
  opacity: 0.95;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.85;
  transform-origin: 50% 50%;
}

.sidebar-toggle-icon--open .sidebar-toggle-chevron {
  transform: translateX(-0.2px);
}

.sidebar-toggle-button--collapsed .sidebar-toggle-chevron {
  stroke-width: 2;
  transform: translateX(0.4px);
}

.sidebar-copy {
  overflow: hidden;
  white-space: nowrap;
  transition:
    max-width var(--motion-sidebar-duration) var(--motion-sidebar-easing),
    opacity calc(var(--motion-sidebar-duration) - 40ms) ease,
    transform var(--motion-sidebar-duration) var(--motion-sidebar-easing);
}

.sidebar-copy--visible {
  max-width: 240px;
  opacity: 1;
  transform: translateX(0);
}

.sidebar-copy--hidden {
  max-width: 0;
  opacity: 0;
  transform: translateX(-10px);
}

.sidebar-section {
  overflow: hidden;
  transition:
    max-height var(--motion-sidebar-duration) var(--motion-sidebar-easing),
    opacity calc(var(--motion-sidebar-duration) - 40ms) ease,
    transform var(--motion-sidebar-duration) var(--motion-sidebar-easing);
}

.sidebar-section--visible {
  max-height: 1200px;
  opacity: 1;
  transform: translateX(0);
}

.sidebar-section--hidden {
  max-height: 0;
  opacity: 0;
  transform: translateX(-12px);
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .sidebar-shell,
  .sidebar-panel,
  .sidebar-copy,
  .sidebar-section {
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 767px) {
  .app-shell-main--mobile {
    width: 100%;
    min-width: 0;
    overflow-x: hidden;
  }
}

.markdown-prose .md-table-wrap table {
  border-collapse: separate;
  border-spacing: 0;
}

.markdown-prose {
  --tw-prose-body: var(--color-text-primary);
  --tw-prose-headings: var(--color-text-primary);
  --tw-prose-lead: var(--color-text-secondary);
  --tw-prose-links: var(--color-text-accent);
  --tw-prose-bold: var(--color-text-primary);
  --tw-prose-counters: var(--color-text-tertiary);
  --tw-prose-bullets: var(--color-text-tertiary);
  --tw-prose-hr: var(--color-border);
  --tw-prose-quotes: var(--color-text-primary);
  --tw-prose-quote-borders: var(--color-outline-variant);
  --tw-prose-captions: var(--color-text-secondary);
  --tw-prose-kbd: var(--color-text-secondary);
  --tw-prose-code: var(--color-code-fg);
  --tw-prose-pre-code: var(--color-code-fg);
  --tw-prose-pre-bg: var(--color-code-bg);
  --tw-prose-th-borders: var(--color-border);
  --tw-prose-td-borders: var(--color-border);
}

.markdown-prose .md-table-wrap tbody tr:last-child td {
  border-bottom: 0;
}

.markdown-prose a code {
  color: inherit;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-outline); border-radius: 9999px; opacity: 0.3; }
::-webkit-scrollbar-thumb:hover { opacity: 0.6; }

.sidebar-scroll-area {
  padding-bottom: 72px;
  scrollbar-width: thin;
  scrollbar-color: var(--color-outline-a72) transparent;
}

.sidebar-settings-dock {
  z-index: 30;
  background-color: var(--color-surface-sidebar);
  background-image: var(--sidebar-panel-bg-image);
  background-repeat: no-repeat;
  background-position: left bottom;
}

.sidebar-scroll-area::-webkit-scrollbar {
  width: 4px;
}

.sidebar-scroll-area::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-scroll-area::-webkit-scrollbar-thumb {
  background: var(--color-outline-a78);
  border-radius: 9999px;
}

.sidebar-scroll-area::-webkit-scrollbar-thumb:hover {
  background: var(--color-outline-a92);
}

.activity-heat-cell {
  position: relative;
  transform: translateZ(0);
  transform-origin: center;
  transition:
    border-color 150ms ease,
    box-shadow 180ms ease,
    filter 180ms ease,
    transform 180ms cubic-bezier(0.22, 1, 0.36, 1);
}

.activity-heat-cell:hover,
.activity-heat-cell:focus-visible,
.activity-heat-cell.is-active {
  z-index: 1;
  transform: translateZ(0) scale(1.16);
  box-shadow: var(--shadow-activity-cell-hover);
  filter: saturate(1.08);
}

@media (prefers-reduced-motion: reduce) {
  .activity-heat-cell {
    transition-duration: 0.01ms !important;
  }

  .activity-heat-cell:hover,
  .activity-heat-cell:focus-visible,
  .activity-heat-cell.is-active {
    transform: translateZ(0);
  }
}

/* Animations */
@keyframes shimmer {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
@keyframes activity-reveal {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes composer-drop-fade {
  from { opacity: 0; transform: scale(0.985); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes composer-drop-pulse {
  0%, 100% { opacity: 0.96; }
  50% { opacity: 1; }
}
.animate-shimmer { animation: shimmer 1.5s ease-in-out infinite; }
.animate-spin { animation: spin 1s linear infinite; }
.animate-pulse-dot { animation: pulse-dot 1.5s ease-in-out infinite; }

/* Progress bar */
@keyframes progress-fill {
  from { width: 0%; }
}

/* Indeterminate (browser-style) loading bar: a segment that slides across the track */
@keyframes progress-indeterminate {
  0% { left: -40%; right: 100%; }
  60% { left: 100%; right: -40%; }
  100% { left: 100%; right: -40%; }
}
.progress-indeterminate-track {
  position: relative;
  overflow: hidden;
}
.progress-indeterminate-track::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: -40%;
  right: 100%;
  background: var(--color-primary);
  animation: progress-indeterminate 1.1s ease-in-out infinite;
}
@media (prefers-reduced-motion: reduce) {
  .progress-indeterminate-track::before {
    animation: none;
    left: 0;
    right: 0;
    opacity: 0.5;
  }
}

/* Off-screen paint skipping for fully-mounted (non-virtualized) transcript rows.
   WebKit (Tauri WKWebView) paints complex message DOM ~2x slower than Blink and
   stutters on long worst-case frames; content-visibility lets it skip off-screen
   rows WITHOUT unmounting or re-measuring them. Measured (Playwright WebKit, 79-msg
   session): worst frame 279ms -> 18ms, jank 2 -> 0. Only non-virtualized rows get
   this class — virtualized window items must stay free of content-visibility to
   avoid the zero-height measurement regression in the virtualizer. */
.chat-render-item--cv {
  content-visibility: auto;
  contain-intrinsic-size: auto 300px;
}