:root {
  color-scheme: dark;
  --bg: #0b0f14;
  --panel: #111821;
  --panel-2: #151e29;
  --border: #2a3542;
  --text: #e7edf4;
  --muted: #98a7b7;
  --accent: #6cb6ff;
  --accent-strong: #3094f2;
  --green-bg: rgba(35, 134, 54, 0.24);
  --green-line: #3fb950;
  --red-bg: rgba(248, 81, 73, 0.22);
  --red-line: #f85149;
  --yellow-bg: rgba(187, 128, 9, 0.24);
  --yellow-line: #d29922;
  --neutral-bg: rgba(139, 148, 158, 0.14);
  --shadow: 0 14px 36px rgba(0, 0, 0, 0.28);
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f7fb;
  --panel: #ffffff;
  --panel-2: #f7f9fc;
  --border: #d7dee8;
  --text: #18212d;
  --muted: #657386;
  --accent: #0969da;
  --accent-strong: #075ab8;
  --green-bg: rgba(46, 160, 67, 0.14);
  --green-line: #1a7f37;
  --red-bg: rgba(207, 34, 46, 0.13);
  --red-line: #cf222e;
  --yellow-bg: rgba(191, 135, 0, 0.16);
  --yellow-line: #9a6700;
  --neutral-bg: rgba(110, 118, 129, 0.10);
  --shadow: 0 14px 36px rgba(31, 42, 55, 0.10);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

.app-header,
.app-footer,
.app-shell {
  width: min(1600px, calc(100% - 32px));
  margin-inline: auto;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0 18px;
}

.app-header h1 {
  margin: 0;
  font-size: clamp(1.6rem, 2.4vw, 2.35rem);
}

.app-header p,
.app-footer {
  color: var(--muted);
}

.app-header p {
  margin: 7px 0 0;
}

.app-shell {
  padding-bottom: 22px;
}

.picker-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.picker-card,
.status-bar,
.workspace {
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.picker-card {
  border-radius: 14px;
  padding: 18px;
}

.picker-heading,
.picker-actions,
.viewer-toolbar,
.navigator-toolbar {
  display: flex;
  align-items: center;
}

.picker-heading,
.viewer-toolbar {
  justify-content: space-between;
  gap: 16px;
}

.eyebrow {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.picker-card h2,
.viewer-toolbar h2 {
  margin: 4px 0 0;
  overflow-wrap: anywhere;
}

.picker-card h2 {
  font-size: 1.05rem;
}

.picker-actions {
  gap: 10px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.picker-meta {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.button,
.icon-button,
.summary-chip,
.tree-row {
  border: 0;
  cursor: pointer;
}

.button {
  min-height: 40px;
  border-radius: 9px;
  padding: 0 14px;
  background: var(--accent-strong);
  color: white;
  font-weight: 750;
}

.button:hover {
  filter: brightness(1.08);
}

.button-secondary {
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
}

.icon-button {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  font-size: 1.45rem;
}

.icon-button:hover {
  background: var(--neutral-bg);
  color: var(--text);
}

.status-bar {
  position: relative;
  margin-top: 16px;
  min-height: 48px;
  display: flex;
  align-items: center;
  border-radius: 12px;
  padding: 11px 16px;
  color: var(--muted);
  overflow: hidden;
}

.progress-wrap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--neutral-bg);
}

.progress-bar {
  width: 0;
  height: 100%;
  background: var(--accent);
  transition: width 120ms linear;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(270px, 23%) minmax(0, 1fr);
  margin-top: 16px;
  min-height: 860px;
  border-radius: 14px;
  overflow: hidden;
}

.navigator {
  min-width: 0;
  border-right: 1px solid var(--border);
  background: var(--panel-2);
  overflow: auto;
}

.navigator-toolbar {
  position: sticky;
  top: 0;
  z-index: 4;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  padding: 14px;
  border-bottom: 1px solid var(--border);
  background: var(--panel-2);
}

.navigator-toolbar input[type="search"] {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--panel);
  color: var(--text);
  padding: 0 12px;
}

.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.85rem;
  white-space: nowrap;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 12px 14px;
}

.summary-chip {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--panel);
  padding: 8px 10px;
  text-align: left;
}

.summary-chip strong {
  font-size: 1.1rem;
}

.summary-chip span {
  color: var(--muted);
  font-size: 0.76rem;
}

.summary-chip.active {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.tree {
  padding: 3px 8px 16px;
  font-size: 0.88rem;
}

.tree-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.tree-list .tree-list {
  padding-left: 18px;
}

.tree-row {
  width: 100%;
  display: grid;
  grid-template-columns: 18px 16px minmax(0, 1fr) auto;
  align-items: center;
  gap: 5px;
  border-radius: 7px;
  background: transparent;
  padding: 6px 7px;
  text-align: left;
}

.tree-row:hover,
.tree-row.selected {
  background: var(--neutral-bg);
}

.tree-row.selected {
  outline: 1px solid var(--accent);
}

.tree-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tree-count {
  color: var(--muted);
  font-size: 0.74rem;
}

.twisty {
  color: var(--muted);
  font-size: 0.76rem;
}

.file-status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--muted);
}

.file-status-dot.modified,
.status-badge.modified {
  background: var(--yellow-bg);
  color: var(--yellow-line);
}

.file-status-dot.added,
.status-badge.added {
  background: var(--green-bg);
  color: var(--green-line);
}

.file-status-dot.removed,
.status-badge.removed {
  background: var(--red-bg);
  color: var(--red-line);
}

.file-status-dot.identical,
.status-badge.identical {
  background: var(--neutral-bg);
  color: var(--muted);
}

.file-status-dot.modified { background: var(--yellow-line); }
.file-status-dot.added { background: var(--green-line); }
.file-status-dot.removed { background: var(--red-line); }
.file-status-dot.identical { background: var(--muted); }

.viewer {
  position: relative;
  min-width: 0;
  overflow: hidden;
  background: var(--panel);
}

.viewer-toolbar {
  min-height: 72px;
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
}

.viewer-toolbar h2 {
  font-size: 0.98rem;
  font-family: var(--mono);
  font-weight: 650;
}

.path-block {
  min-width: 0;
}

.status-badge {
  display: inline-block;
  border-radius: 999px;
  padding: 3px 8px;
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.empty-viewer,
.binary-viewer {
  padding: 28px;
  color: var(--muted);
}

.text-viewer {
  min-width: 0;
  overflow: auto;
  height: clamp(760px, 82vh, 1200px);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.5;
}

.diff-header {
  position: sticky;
  top: 0;
  z-index: 3;
  border-bottom: 1px solid var(--border);
  background: var(--panel-2);
  font-family: var(--sans);
  font-weight: 750;
}

.diff-grid-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  min-width: 900px;
}

.diff-side-title {
  padding: 10px 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.diff-side-title + .diff-side-title {
  border-left: 1px solid var(--border);
}

.diff-line {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  min-height: 22px;
  border-bottom: 1px solid rgba(128, 139, 151, 0.08);
}

.diff-line + .diff-line {
  border-left: 1px solid var(--border);
}

.line-number {
  padding: 1px 10px 1px 5px;
  border-right: 1px solid var(--border);
  color: var(--muted);
  text-align: right;
  user-select: none;
}

.line-code {
  min-width: max-content;
  padding: 1px 10px;
  white-space: pre;
  tab-size: 4;
}

.diff-line.added {
  background: var(--green-bg);
}

.diff-line.removed {
  background: var(--red-bg);
}

.diff-line.placeholder {
  background: var(--neutral-bg);
}

.char-added {
  border-radius: 2px;
  background: rgba(63, 185, 80, 0.45);
}

.char-removed {
  border-radius: 2px;
  background: rgba(248, 81, 73, 0.43);
}

.binary-card {
  max-width: 900px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--panel-2);
  padding: 18px;
}

.binary-card h3 {
  margin-top: 0;
  color: var(--text);
}

.binary-grid,
.image-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.binary-side {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--panel);
  padding: 14px;
}

.binary-side dl {
  margin: 0;
}

.binary-side dt {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.binary-side dd {
  margin: 3px 0 0;
  overflow-wrap: anywhere;
  color: var(--text);
  font-family: var(--mono);
}

.image-compare img {
  display: block;
  max-width: 100%;
  max-height: 430px;
  margin: 10px auto 0;
  object-fit: contain;
  background: repeating-conic-gradient(#ddd 0 25%, #fff 0 50%) 50% / 20px 20px;
}

.notice {
  border-left: 3px solid var(--accent);
  padding: 8px 12px;
  background: var(--neutral-bg);
  color: var(--text);
}

.app-footer {
  padding: 10px 0 28px;
  text-align: center;
  font-size: 0.82rem;
}

@media (max-width: 900px) {
  .picker-grid,
  .workspace,
  .binary-grid,
  .image-compare {
    grid-template-columns: 1fr;
  }

  .workspace {
    min-height: 0;
  }

  .navigator {
    max-height: 380px;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .viewer-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .text-viewer {
    height: 620px;
  }
}

@media (max-width: 620px) {
  .app-header,
  .app-footer,
  .app-shell {
    width: min(100% - 18px, 1600px);
  }

  .app-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .picker-actions .button {
    flex: 1;
  }
}

.archive-unlock {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.archive-unlock label {
  display: block;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 750;
}

.optional-label {
  font-weight: 550;
  opacity: 0.8;
}

.password-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 9px;
}

.password-row input {
  min-width: 0;
  min-height: 40px;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 0 11px;
  background: var(--panel-2);
  color: var(--text);
}

.password-row input:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 55%, transparent);
  outline-offset: 1px;
}

.password-row input:disabled,
.password-row button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.archive-message {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.archive-message.error {
  color: var(--red-line);
}

.archive-unlock[aria-busy="true"] {
  opacity: 0.7;
  pointer-events: none;
}

@media (max-width: 520px) {
  .password-row {
    grid-template-columns: 1fr;
  }
}

.viewer-options {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 14px;
  flex-wrap: wrap;
}

.view-mode-controls {
  display: inline-flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 9px;
  overflow: hidden;
  background: var(--panel-2);
}

.view-mode-controls .control-label {
  padding: 0 9px;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.view-mode-controls button {
  min-height: 34px;
  border: 0;
  border-left: 1px solid var(--border);
  padding: 0 11px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 750;
}

.view-mode-controls button:hover,
.view-mode-controls button.active {
  background: var(--neutral-bg);
  color: var(--text);
}

.view-mode-controls button.active {
  box-shadow: inset 0 -2px 0 var(--accent);
}

.binary-viewer {
  height: clamp(760px, 82vh, 1200px);
  overflow: auto;
}

.byte-card {
  min-width: 1040px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 12px;
}

.byte-toolbar {
  position: sticky;
  top: -28px;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin: -28px -28px 12px;
  border-bottom: 1px solid var(--border);
  padding: 10px 14px;
  background: var(--panel-2);
  font-family: var(--sans);
}

.byte-range {
  color: var(--muted);
  font-size: 0.82rem;
}

.byte-pager {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  flex-wrap: wrap;
}

.pager-button {
  width: 34px;
  height: 32px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
}

.pager-button:disabled {
  opacity: 0.4;
  cursor: default;
}

.page-label {
  min-width: 108px;
  color: var(--muted);
  text-align: center;
  font-size: 0.8rem;
}

.offset-jump {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 5px;
}

.offset-jump label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 0.78rem;
}

.offset-jump input {
  width: 112px;
  min-height: 32px;
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 0 8px;
  background: var(--panel);
  color: var(--text);
  font-family: var(--mono);
}

.offset-jump .button {
  min-height: 32px;
  padding-inline: 10px;
  font-size: 0.78rem;
}

.byte-grid-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.byte-header {
  position: sticky;
  top: 25px;
  z-index: 4;
  border: 1px solid var(--border);
  border-bottom: 0;
  background: var(--panel-2);
}

.byte-side-header {
  padding: 9px 11px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: var(--sans);
  font-weight: 750;
}

.byte-side-header + .byte-side-header,
.byte-side + .byte-side {
  border-left: 1px solid var(--border);
}

.byte-body {
  border: 1px solid var(--border);
}

.byte-row {
  min-height: 24px;
  border-bottom: 1px solid rgba(128, 139, 151, 0.08);
}

.byte-row:last-child {
  border-bottom: 0;
}

.byte-side {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  align-items: stretch;
  min-width: 0;
}

.byte-offset {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  border-right: 1px solid var(--border);
  padding: 2px 9px;
  color: var(--muted);
  user-select: none;
}

.byte-cells {
  display: grid;
  grid-template-columns: repeat(16, minmax(22px, 1fr));
  align-items: stretch;
  min-width: 432px;
}

.byte-body.ascii .byte-cells {
  grid-template-columns: repeat(16, minmax(17px, 1fr));
  min-width: 320px;
}

.byte-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 23px;
  border-right: 1px solid rgba(128, 139, 151, 0.06);
  white-space: pre;
}

.byte-cell:nth-child(8) {
  margin-right: 5px;
  border-right-color: var(--border);
}

.byte-cell.removed {
  background: var(--red-bg);
  color: var(--red-line);
  font-weight: 800;
}

.byte-cell.added {
  background: var(--green-bg);
  color: var(--green-line);
  font-weight: 800;
}

.byte-cell.missing {
  background: var(--neutral-bg);
  color: transparent;
}

@media (max-width: 900px) {
  .viewer-options,
  .byte-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .byte-pager {
    justify-content: flex-start;
  }
}


.viewer-expand-button {
  min-height: 34px;
  padding-inline: 11px;
  font-size: 0.82rem;
}

.no-diff-notice {
  grid-column: 1 / -1;
  padding: 28px;
  color: var(--muted);
  font-family: var(--sans);
  text-align: center;
}

.diff-scroll-map {
  position: absolute;
  z-index: 12;
  right: 14px;
  width: 12px;
  pointer-events: auto;
}

.diff-overview-track {
  position: relative;
  width: 100%;
  height: 100%;
  border: 1px solid rgba(128, 139, 151, 0.2);
  border-radius: 999px;
  background: rgba(128, 139, 151, 0.1);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--panel) 75%, transparent);
  cursor: pointer;
  overflow: hidden;
}

.diff-overview-track:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.diff-overview-window {
  position: absolute;
  z-index: 1;
  left: 0;
  width: 100%;
  min-height: 8px;
  border: 1px solid color-mix(in srgb, var(--accent) 75%, white 10%);
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  pointer-events: none;
}

.diff-scroll-marker {
  position: absolute;
  z-index: 2;
  left: 2px;
  width: 6px;
  min-height: 2px;
  border: 0;
  border-radius: 1px;
  padding: 0;
  cursor: pointer;
}

.diff-scroll-marker.removed {
  background: var(--red-line);
}

.diff-scroll-marker.added {
  background: var(--green-line);
}

.diff-scroll-marker.modified {
  background: linear-gradient(to right, var(--red-line) 0 50%, var(--green-line) 50% 100%);
}

.byte-row-target,
.diff-row-target {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  animation: target-pulse 1.4s ease-out;
}

@keyframes target-pulse {
  0%, 45% { background-color: color-mix(in srgb, var(--accent) 18%, transparent); }
  100% { background-color: transparent; }
}

body.viewer-expanded {
  overflow: hidden;
}

body.viewer-expanded .viewer {
  position: fixed;
  inset: 10px;
  z-index: 100;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

body.viewer-expanded .text-viewer,
body.viewer-expanded .binary-viewer {
  height: calc(100vh - 96px);
}


/* Continuous ASCII representation: human-readable text rather than 16-byte rows. */
.ascii-card {
  min-width: 0;
}

.ascii-stream-header,
.ascii-stream-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.ascii-stream-header {
  position: sticky;
  top: 25px;
  z-index: 4;
  border: 1px solid var(--border);
  border-bottom: 0;
  background: var(--panel-2);
}

.ascii-stream-body {
  border: 1px solid var(--border);
  background: var(--panel);
}

.ascii-segment + .ascii-segment {
  border-top: 1px solid var(--border);
}

.ascii-segment-label {
  position: sticky;
  top: 65px;
  z-index: 2;
  border-bottom: 1px solid var(--border);
  padding: 6px 11px;
  background: color-mix(in srgb, var(--panel-2) 94%, transparent);
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 750;
}

.ascii-pane {
  min-width: 0;
  padding: 14px 16px 22px;
  overflow-wrap: anywhere;
}

.ascii-pane + .ascii-pane {
  border-left: 1px solid var(--border);
}

.ascii-content {
  min-height: 1.5em;
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.55;
  tab-size: 4;
  white-space: pre-wrap;
  word-break: break-word;
}

.ascii-run {
  border-radius: 2px;
  white-space: pre-wrap;
}

.ascii-run.removed {
  background: var(--red-bg);
  color: var(--red-line);
}

.ascii-run.added {
  background: var(--green-bg);
  color: var(--green-line);
}

.ascii-run.missing {
  background: var(--neutral-bg);
  color: transparent;
}

.ascii-segment-divider {
  border-block: 1px solid var(--border);
  padding: 5px 0;
  background: var(--panel-2);
  color: var(--muted);
  text-align: center;
  letter-spacing: 0.35em;
}

.ascii-run-target {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  animation: target-pulse 1.4s ease-out;
}

@media (max-width: 760px) {
  .ascii-stream-grid,
  .ascii-stream-header {
    grid-template-columns: 1fr;
  }

  .ascii-stream-header .byte-side-header + .byte-side-header,
  .ascii-pane + .ascii-pane {
    border-left: 0;
    border-top: 1px solid var(--border);
  }
}