:root {
  /* GitHub Dark High Contrast gray scale */
  --steel-900: #010409;
  --steel-850: #0a0c10;
  --steel-800: #0a0c10;
  --steel-750: #151b23;
  --steel-700: #1a1f29;
  --steel-650: #272b33;
  --steel-600: #353b45;
  --steel-550: #3d444d;
  --steel-500: #525964;
  --steel-450: #656c76;
  --steel-400: #7a828e;
  --steel-350: #9ea7b3;
  --steel-300: #b3bac3;
  --steel-250: #c5cdd8;
  --steel-200: #d9dee3;
  --steel-150: #e6edf3;
  --steel-100: #f0f3f6;

  --is-dark-theme: true;

  /* Primary: GitHub blue */
  --color-primary: #71b7ff;
  --color-primary-contrast: #010409;
  --color-primary-dark-1: #91c9ff;
  --color-primary-dark-2: #aed4ff;
  --color-primary-dark-3: #c8e1ff;
  --color-primary-dark-4: #dceeff;
  --color-primary-dark-5: #e8f2ff;
  --color-primary-dark-6: #f0f7ff;
  --color-primary-dark-7: #f8fbff;
  --color-primary-light-1: #409eff;
  --color-primary-light-2: #388bdb;
  --color-primary-light-3: #316dca;
  --color-primary-light-4: #264f91;
  --color-primary-light-5: #1b3a6b;
  --color-primary-light-6: #122b52;
  --color-primary-light-7: #0c1d3d;
  --color-primary-alpha-10: #409eff19;
  --color-primary-alpha-20: #409eff33;
  --color-primary-alpha-30: #409eff4b;
  --color-primary-alpha-40: #409eff66;
  --color-primary-alpha-50: #409eff80;
  --color-primary-alpha-60: #409eff99;
  --color-primary-alpha-70: #409effb3;
  --color-primary-alpha-80: #409effcc;
  --color-primary-alpha-90: #409effe1;
  --color-primary-hover: var(--color-primary-light-1);
  --color-primary-active: var(--color-primary-light-2);

  /* Secondary */
  --color-secondary: var(--steel-700);
  --color-secondary-dark-1: var(--steel-550);
  --color-secondary-dark-2: var(--steel-500);
  --color-secondary-dark-3: var(--steel-450);
  --color-secondary-dark-4: var(--steel-400);
  --color-secondary-dark-5: var(--steel-350);
  --color-secondary-dark-6: var(--steel-300);
  --color-secondary-dark-7: var(--steel-250);
  --color-secondary-dark-8: var(--steel-200);
  --color-secondary-dark-9: var(--steel-150);
  --color-secondary-dark-10: var(--steel-100);
  --color-secondary-dark-11: var(--steel-100);
  --color-secondary-dark-12: var(--steel-100);
  --color-secondary-dark-13: var(--steel-100);
  --color-secondary-light-1: var(--steel-650);
  --color-secondary-light-2: var(--steel-700);
  --color-secondary-light-3: var(--steel-750);
  --color-secondary-light-4: var(--steel-800);
  --color-secondary-alpha-10: #272b3319;
  --color-secondary-alpha-20: #272b3333;
  --color-secondary-alpha-30: #272b334b;
  --color-secondary-alpha-40: #272b3366;
  --color-secondary-alpha-50: #272b3380;
  --color-secondary-alpha-60: #272b3399;
  --color-secondary-alpha-70: #272b33b3;
  --color-secondary-alpha-80: #272b33cc;
  --color-secondary-alpha-90: #272b33e1;
  --color-secondary-hover: var(--color-secondary-light-1);
  --color-secondary-active: var(--color-secondary-light-2);

  /* Console */
  --color-console-fg: #f0f3f6;
  --color-console-fg-subtle: #9ea7b3;
  --color-console-bg: #010409;
  --color-console-border: #3d444d;
  --color-console-hover-bg: #ffffff16;
  --color-console-active-bg: #353b45;
  --color-console-menu-bg: #272b33;
  --color-console-menu-border: #525964;

  /* GitHub Dark HC semantic colors */
  --color-red: #ff6a69;
  --color-orange: #f0883e;
  --color-yellow: #f0b72f;
  --color-olive: #57ab5a;
  --color-green: #26cd4d;
  --color-teal: #39d5cf;
  --color-blue: #71b7ff;
  --color-violet: #cb7eff;
  --color-purple: #cb7eff;
  --color-pink: #f778ba;
  --color-brown: #c69026;
  --color-grey: var(--steel-500);
  --color-black: #010409;

  --color-red-light: #ff9492;
  --color-orange-light: #f7b267;
  --color-yellow-light: #f7ce56;
  --color-olive-light: #6bc46d;
  --color-green-light: #4ae168;
  --color-teal-light: #5fe3db;
  --color-blue-light: #91c9ff;
  --color-violet-light: #dbb7ff;
  --color-purple-light: #dbb7ff;
  --color-pink-light: #f99bce;
  --color-brown-light: #d4a33b;
  --color-grey-light: var(--steel-300);
  --color-black-light: #151b23;

  --color-red-dark-1: #e5534b;
  --color-orange-dark-1: #d4772c;
  --color-yellow-dark-1: #d4a015;
  --color-olive-dark-1: #46954a;
  --color-green-dark-1: #1fae3e;
  --color-teal-dark-1: #2db8b0;
  --color-blue-dark-1: #409eff;
  --color-violet-dark-1: #b15fef;
  --color-purple-dark-1: #b15fef;
  --color-pink-dark-1: #e05fa0;
  --color-brown-dark-1: #ae7c14;
  --color-black-dark-1: #010409;

  --color-red-dark-2: #cc3e3d;
  --color-orange-dark-2: #b8621a;
  --color-yellow-dark-2: #b8860d;
  --color-olive-dark-2: #347d37;
  --color-green-dark-2: #1a9133;
  --color-teal-dark-2: #249e98;
  --color-blue-dark-2: #316dca;
  --color-violet-dark-2: #9745e0;
  --color-purple-dark-2: #9745e0;
  --color-pink-dark-2: #c44a87;
  --color-brown-dark-2: #966a0b;
  --color-black-dark-2: #010409;

  /* ANSI terminal colors */
  --color-ansi-black: #272b33;
  --color-ansi-red: #ff9492;
  --color-ansi-green: #26cd4d;
  --color-ansi-yellow: #f0b72f;
  --color-ansi-blue: #71b7ff;
  --color-ansi-magenta: #cb7eff;
  --color-ansi-cyan: #39d5cf;
  --color-ansi-white: var(--color-console-fg-subtle);
  --color-ansi-bright-black: #525964;
  --color-ansi-bright-red: #ffb1af;
  --color-ansi-bright-green: #4ae168;
  --color-ansi-bright-yellow: #f7ce56;
  --color-ansi-bright-blue: #91c9ff;
  --color-ansi-bright-magenta: #dbb7ff;
  --color-ansi-bright-cyan: #5fe3db;
  --color-ansi-bright-white: var(--color-console-fg);

  --color-gold: #f0b72f;
  --color-white: #f0f3f6;
  --color-pure-black: #000000;

  /* Diff colors - high contrast */
  --color-diff-removed-word-bg: #cc3e3d80;
  --color-diff-added-word-bg: #1a913380;
  --color-diff-removed-row-bg: #cc3e3d26;
  --color-diff-moved-row-bg: #ae7c1426;
  --color-diff-added-row-bg: #1a913326;
  --color-diff-removed-row-border: #ff6a69;
  --color-diff-moved-row-border: #f0b72f;
  --color-diff-added-row-border: #26cd4d;
  --color-diff-inactive: var(--steel-650);

  /* Status colors - high contrast */
  --color-error-border: #ff6a69;
  --color-error-bg: #5a1e1e;
  --color-error-bg-active: #78302e;
  --color-error-bg-hover: #78302e;
  --color-error-text: #ffb1af;

  --color-success-border: #26cd4d;
  --color-success-bg: #12361e;
  --color-success-text: #4ae168;

  --color-warning-border: #f0b72f;
  --color-warning-bg: #4e3b12;
  --color-warning-text: #f7ce56;

  --color-info-border: #71b7ff;
  --color-info-bg: #1a2e50;
  --color-info-text: #91c9ff;

  /* Badges */
  --color-red-badge: #ff6a69;
  --color-red-badge-bg: #ff6a6922;
  --color-red-badge-hover-bg: #ff6a6944;
  --color-green-badge: #26cd4d;
  --color-green-badge-bg: #26cd4d22;
  --color-green-badge-hover-bg: #26cd4d44;
  --color-yellow-badge: #f0b72f;
  --color-yellow-badge-bg: #f0b72f22;
  --color-yellow-badge-hover-bg: #f0b72f44;
  --color-orange-badge: #f0883e;
  --color-orange-badge-bg: #f0883e22;
  --color-orange-badge-hover-bg: #f0883e44;

  /* Thin colors */
  --thin-lightness: 0.75;
  --regular-chroma: 0.22;
  --color-thin-green: oklch(var(--thin-lightness) var(--regular-chroma) 145deg);
  --color-thin-red: oklch(var(--thin-lightness) var(--regular-chroma) 27deg);
  --color-thin-purple: oklch(var(--thin-lightness) var(--regular-chroma) 298deg);
  --color-thin-orange: oklch(var(--thin-lightness) var(--regular-chroma) 41deg);
  --thin-lightness-highlight: 0.82;
  --color-thin-red-highlight: oklch(var(--thin-lightness-highlight) var(--regular-chroma) 27deg);
  --bg-lightness: 0.26;
  --bg-chroma: 0.05;
  --color-danger-bg: oklch(var(--bg-lightness) var(--bg-chroma) 27deg);

  /* Layout surfaces */
  --color-body: var(--steel-800);
  --color-box-header: var(--steel-700);
  --color-box-body: var(--steel-750);
  --color-box-body-highlight: var(--steel-650);
  --color-text-dark: #f0f3f6;
  --color-text: var(--steel-100);
  --color-text-light: var(--steel-150);
  --color-text-light-1: var(--steel-150);
  --color-text-light-2: var(--steel-200);
  --color-text-light-3: var(--steel-200);
  --color-footer: var(--steel-900);
  --color-timeline: var(--steel-600);

  /* Inputs */
  --color-input-text: var(--steel-100);
  --color-input-background: var(--steel-750);
  --color-input-toggle-background: var(--steel-650);
  --color-input-border: var(--steel-500);
  --color-input-border-hover: var(--steel-400);

  /* Header */
  --color-header-wrapper: var(--steel-900);
  --color-header-wrapper-transparent: #0a0c1000;

  /* Surfaces */
  --color-light: #00000028;
  --color-light-mimic-enabled: rgba(0, 0, 0, calc(40 / 255 * 222 / 255 / var(--opacity-disabled)));
  --color-light-border: #f0f3f628;
  --color-hover: var(--steel-600);
  --color-active: var(--steel-650);
  --color-menu: var(--steel-700);
  --color-card: var(--steel-700);
  --fancy-card-bg: var(--steel-650);
  --fancy-card-border: var(--steel-500);

  /* Markup */
  --color-markup-table-row: #f0f3f606;
  --color-markup-code-block: var(--steel-850);
  --color-markup-code-inline: var(--steel-900);

  /* Misc UI */
  --color-button: var(--steel-600);
  --color-code-bg: var(--steel-750);
  --color-shadow: #00000080;
  --color-secondary-bg: var(--steel-700);
  --color-text-focus: #f0f3f6;
  --color-expand-button: #353b45;
  --color-placeholder-text: var(--color-text-light-3);
  --color-editor-line-highlight: var(--steel-700);
  --color-project-board-bg: var(--color-secondary-light-3);
  --color-project-board-dark-label: var(--color-text-light-3);
  --color-caret: var(--color-text);

  /* Reactions */
  --color-reaction-bg: #f0f3f612;
  --color-reaction-active-bg: var(--color-primary-alpha-30);
  --color-reaction-hover-bg: var(--color-primary-alpha-40);

  /* Tooltips */
  --color-tooltip-text: #f0f3f6;
  --color-tooltip-bg: #010409f0;

  /* Navigation */
  --color-nav-bg: var(--steel-900);
  --color-nav-hover-bg: var(--steel-600);
  --color-secondary-nav-bg: var(--color-body);

  /* Labels */
  --color-label-text: #f0f3f6;
  --color-label-bg: var(--steel-600);
  --color-label-hover-bg: var(--steel-550);
  --color-label-active-bg: var(--steel-500);
  --color-label-bg-alt: var(--steel-550);

  /* Accents */
  --color-accent: var(--color-primary);
  --color-small-accent: var(--color-primary-light-4);
  --color-highlight-fg: var(--color-primary);
  --color-highlight-bg: var(--color-primary-alpha-20);

  /* Overlay */
  --color-overlay-backdrop: #010409d0;

  /* Selection */
  --color-selection-bg: var(--steel-100);
  --color-selection-fg: var(--color-pure-black);

  /* Checkerboard */
  --checkerboard-color-1: #3d444d;
  --checkerboard-color-2: #272b33;

  accent-color: var(--color-accent);
  color-scheme: dark;
}

/* Emoji inversion for dark background readability */
.emoji[aria-label="check mark"],
.emoji[aria-label="currency exchange"],
.emoji[aria-label="TOP arrow"],
.emoji[aria-label="END arrow"],
.emoji[aria-label="ON! arrow"],
.emoji[aria-label="SOON arrow"],
.emoji[aria-label="heavy dollar sign"],
.emoji[aria-label="copyright"],
.emoji[aria-label="registered"],
.emoji[aria-label="trade mark"],
.emoji[aria-label="multiply"],
.emoji[aria-label="plus"],
.emoji[aria-label="minus"],
.emoji[aria-label="divide"],
.emoji[aria-label="curly loop"],
.emoji[aria-label="double curly loop"],
.emoji[aria-label="wavy dash"],
.emoji[aria-label="paw prints"],
.emoji[aria-label="musical note"],
.emoji[aria-label="musical notes"] {
  filter: invert(100%) hue-rotate(180deg);
}

i.grey.icon.icon.icon.icon {
  color: var(--steel-350) !important;
}

.ui.secondary.vertical.menu {
  border-radius: 0.28571429rem !important;
  overflow: hidden;
}

.ui.basic.primary.button.item {
  background-color: var(--color-active) !important;
  color: var(--color-text) !important;
  box-shadow: none !important;
}

.ui.red.label.notification_count,
.ui.primary.label,
.ui.primary.labels .label {
  background-color: var(--color-primary-light-3) !important;
}

.ui.labeled.icon.buttons > .button > .icon,
.ui.labeled.icon.button > .icon {
  background-color: var(--color-light) !important;
}

#review-box .review-comments-counter {
  background-color: var(--color-shadow) !important;
  color: var(--color-white) !important;
  margin-left: 0.5em;
}

.ui.basic.labels .primary.label,
.ui.ui.ui.basic.primary.label {
  color: var(--color-text-dark) !important;
}

.ui.yellow.label.pending-label {
  color: var(--color-warning-text) !important;
}

strong.attention-important, svg.attention-important {
  color: var(--color-violet-light);
}

strong.attention-note, svg.attention-note {
  color: var(--color-blue-light);
}

strong.attention-caution, svg.attention-caution {
  color: var(--color-red-light);
}

.ui.basic.red.button {
  background-color: var(--color-red);
  color: var(--color-pure-black);
}

.ui.basic.red.button:hover,
.ui.basic.red.button:focus {
  background-color: var(--color-red-dark-1);
  color: var(--color-pure-black);
}

.ui.basic.red.button:active {
  background-color: var(--color-red-dark-2);
  color: var(--color-pure-black);
}