:root {
  color-scheme: dark;
  --bg: #151515;
  --panel: #202020;
  --panel-strong: #292929;
  --text: #f1eee7;
  --muted: #aaa39a;
  --line: #3a3834;
  --accent: #68d391;
  --accent-strong: #2f855a;
  --warning: #e9b44c;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
}

body {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  overflow: hidden;
}

[hidden] {
  display: none !important;
}

.app-tabs {
  display: flex;
  align-items: end;
  gap: 2px;
  min-height: 42px;
  padding: max(6px, env(safe-area-inset-top)) 12px 0;
  border-bottom: 1px solid var(--line);
  background: #191919;
  z-index: 10;
}

.app-tab {
  min-height: 36px;
  padding: 0 14px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.app-tab[aria-selected="true"] {
  border-bottom-color: var(--accent);
  color: var(--text);
}

.tab-panel {
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

button,
input,
select {
  font: inherit;
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

.converter-workspace {
  display: grid;
  grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
}

.converter-controls {
  min-width: 0;
  overflow: auto;
  padding: 22px 18px;
  border-right: 1px solid var(--line);
  background: var(--panel);
}

.converter-controls header {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.converter-controls h1,
.converter-preview h2 {
  margin: 0;
  letter-spacing: 0;
}

.converter-controls h1 {
  font-size: 20px;
}

.converter-controls header p,
.converter-preview header p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.converter-controls form {
  display: grid;
  gap: 12px;
  padding-top: 18px;
}

.converter-controls label,
.converter-width-row output {
  color: var(--muted);
  font-size: 12px;
}

.converter-controls input[type="url"] {
  width: 100%;
  min-height: 40px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #171717;
  color: var(--text);
}

.converter-controls input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.converter-width-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.primary-button {
  min-height: 40px;
  border: 1px solid var(--accent-strong);
  border-radius: 6px;
  background: var(--accent-strong);
  color: #ffffff;
  cursor: pointer;
}

.primary-button:disabled,
.text-button:disabled {
  cursor: default;
  opacity: 0.45;
}

.converter-status {
  min-height: 20px;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.converter-preview {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  min-width: 0;
  min-height: 0;
}

.converter-preview > header {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
  background: #191919;
}

.converter-preview-heading {
  min-width: 0;
}

.converter-display-controls {
  min-width: 0;
}

.converter-preview h2 {
  font-size: 16px;
}

.converter-canvas {
  min-width: 0;
  min-height: 0;
  overflow: auto;
  background: #0f0f0e;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

#converterOutput {
  width: max-content;
  min-width: 100%;
  min-height: 100%;
  margin: 0;
  padding: 20px;
  color: #f5f0e6;
  font: 11px/1 "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  white-space: pre;
  transform-origin: top left;
}

.converter-stage {
  width: 100%;
  min-width: 0;
}

.converter-wrap #converterOutput {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.converter-inverted .converter-canvas {
  background: #fffdf8;
}

.converter-inverted #converterOutput {
  color: #111111;
}

body.panel-hidden .app-shell {
  grid-template-columns: minmax(0, 1fr);
}

.sidebar {
  display: flex;
  flex-direction: column;
  min-height: 0;
  border-right: 1px solid var(--line);
  background: var(--panel);
}

body.panel-hidden .sidebar {
  display: none;
}

.brand {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 18px 14px;
  border-bottom: 1px solid var(--line);
}

.brand h1,
.file-heading h2 {
  margin: 0;
  letter-spacing: 0;
}

.brand h1 {
  font-size: 18px;
  line-height: 1.2;
}

.brand p,
.file-heading p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.icon-button,
.text-button {
  border: 1px solid var(--line);
  background: var(--panel-strong);
  color: var(--text);
  cursor: pointer;
}

.icon-button {
  width: 36px;
  height: 36px;
  display: inline-grid;
  place-items: center;
  border-radius: 6px;
  flex: 0 0 auto;
}

.text-button {
  min-height: 34px;
  padding: 0 12px;
  border-radius: 6px;
}

.icon-button:hover,
.text-button:hover,
.file-item:hover {
  border-color: var(--accent-strong);
}

.folder-form {
  display: grid;
  gap: 7px;
  padding: 14px 18px 10px;
  border-bottom: 1px solid var(--line);
}

.folder-form label {
  color: var(--muted);
  font-size: 12px;
}

.folder-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.folder-form p {
  min-height: 17px;
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.search-row {
  padding: 10px 18px;
}

.folder-form input,
.search-row input,
.list-meta select {
  width: 100%;
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #171717;
  color: var(--text);
}

.folder-form input,
.search-row input {
  padding: 0 11px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.list-meta {
  display: grid;
  grid-template-columns: 1fr 132px;
  align-items: center;
  gap: 10px;
  padding: 0 18px 12px;
  color: var(--muted);
  font-size: 12px;
}

.list-meta select {
  padding: 0 8px;
}

.file-list {
  min-height: 0;
  overflow: auto;
  padding: 0 10px 14px;
}

.file-item {
  width: 100%;
  display: grid;
  gap: 4px;
  padding: 10px 8px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.file-item[aria-current="true"] {
  border-color: var(--accent-strong);
  background: rgba(104, 211, 145, 0.1);
}

.file-item strong {
  font-size: 13px;
  overflow-wrap: anywhere;
}

.file-item span {
  color: var(--muted);
  font-size: 11px;
  overflow-wrap: anywhere;
}

.viewer-pane {
  position: relative;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.toolbar {
  position: sticky;
  top: 0;
  display: grid;
  grid-template-columns: auto minmax(220px, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  background: #191919;
  z-index: 4;
}

.view-buttons {
  display: inline-flex;
  gap: 8px;
}

body.panel-hidden .toolbar {
  grid-template-columns: auto 1fr;
}

body.panel-hidden .toolbar .controls,
body.panel-hidden .toolbar .file-heading {
  display: none;
}

.file-heading h2 {
  font-size: 16px;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.controls label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
}

.controls input[type="range"] {
  width: 92px;
  accent-color: var(--accent);
}

.check-control input {
  accent-color: var(--accent-strong);
}

.canvas-wrap {
  min-width: 0;
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  background: #0f0f0e;
}

.grid-view {
  display: none;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px;
  padding: 18px;
}

body.grid-mode #asciiCanvas {
  display: none;
}

body.page-mode #asciiCanvas {
  display: none;
}

body.grid-mode .single-stage,
body.page-mode .single-stage {
  display: none;
}

body.grid-mode .grid-view {
  display: grid;
}

body.page-mode .page-view {
  display: grid;
}

body.grid-mode .floating-nav,
body.page-mode .floating-nav {
  display: none;
}

.grid-tile {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 8px;
  min-width: 0;
  aspect-ratio: 4 / 3;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.045);
  color: var(--text);
  cursor: pointer;
  overflow: hidden;
}

.grid-tile:hover {
  border-color: rgba(104, 211, 145, 0.72);
  background: rgba(104, 211, 145, 0.08);
}

.grid-tile pre {
  min-width: 0;
  max-width: 100%;
  min-height: 0;
  margin: 0;
  overflow: hidden;
  color: #f5f0e6;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 5px;
  line-height: 0.82;
  text-align: left;
  white-space: pre;
}

.grid-tile span {
  min-width: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.grid-empty {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.page-view {
  display: none;
  gap: 28px;
  padding: 22px;
}

.page-item {
  display: grid;
  gap: 10px;
  min-width: 0;
  contain: layout style;
}

.page-item header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  min-width: 0;
  color: var(--muted);
  font-size: 12px;
}

.page-item strong {
  min-width: 0;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.page-item span {
  flex: 0 0 auto;
}

.page-item pre {
  width: max-content;
  min-width: 0;
  max-width: none;
  margin: 0;
  overflow: hidden;
  color: #f5f0e6;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 8px;
  line-height: 0.9;
  white-space: pre;
}

.page-stage,
.single-stage {
  width: 100%;
  min-width: 0;
}

.page-stage {
  overflow: hidden;
}

.floating-file-name {
  position: absolute;
  top: 60px;
  left: 50%;
  z-index: 5;
  max-width: min(720px, calc(100vw - 32px));
  transform: translateX(-50%);
  display: none;
  padding: 7px 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 6px;
  background: rgba(12, 12, 12, 0.58);
  color: rgba(245, 240, 230, 0.92);
  font-size: 12px;
  line-height: 1.3;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  backdrop-filter: blur(12px);
  pointer-events: none;
}

body.panel-hidden .floating-file-name {
  display: block;
}

body.panel-hidden.grid-mode .floating-file-name,
body.panel-hidden.page-mode .floating-file-name {
  display: none;
}

.floating-nav {
  position: absolute;
  left: 50%;
  bottom: 22px;
  z-index: 6;
  display: flex;
  gap: 10px;
  transform: translateX(-50%);
  padding: 6px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 8px;
  background: rgba(12, 12, 12, 0.38);
  backdrop-filter: blur(14px);
}

.nav-button {
  min-width: 92px;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  background: rgba(30, 30, 30, 0.52);
  color: rgba(245, 240, 230, 0.95);
  cursor: pointer;
}

.nav-button:hover {
  border-color: rgba(104, 211, 145, 0.78);
}

.nav-button:disabled {
  cursor: default;
  opacity: 0.42;
}

#asciiCanvas {
  display: inline-block;
  width: max-content;
  max-width: none;
  min-width: 100%;
  margin: 0;
  padding: 20px;
  color: #f5f0e6;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 11px;
  line-height: 1;
  white-space: pre;
  transform-origin: top left;
}

body.inverted {
  --bg: #f1eee7;
  --panel: #faf7f0;
  --panel-strong: #ffffff;
  --text: #151515;
  --muted: #5f5a52;
  --line: #d6d0c6;
}

body.inverted .toolbar,
body.inverted .folder-form input,
body.inverted .search-row input,
body.inverted .list-meta select {
  background: #fffdf8;
}

body.inverted .floating-file-name,
body.inverted .floating-nav {
  border-color: rgba(17, 17, 17, 0.12);
  background: rgba(255, 255, 255, 0.66);
  color: rgba(17, 17, 17, 0.88);
}

body.inverted .nav-button {
  border-color: rgba(17, 17, 17, 0.18);
  background: rgba(255, 255, 255, 0.52);
  color: rgba(17, 17, 17, 0.9);
}

body.inverted .grid-tile {
  border-color: rgba(17, 17, 17, 0.11);
  background: rgba(17, 17, 17, 0.045);
}

body.inverted .grid-tile pre {
  color: #111111;
}

body.inverted .page-item pre {
  color: #111111;
}

body.inverted .canvas-wrap {
  background: #fffdf8;
}

body.inverted #asciiCanvas {
  color: #111111;
}

body.wrap-enabled #asciiCanvas {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

@media (max-width: 860px) {
  .converter-workspace {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(230px, 40vh) minmax(0, 1fr);
  }

  .converter-controls {
    padding: 16px 14px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .converter-controls header {
    padding-bottom: 12px;
  }

  .converter-controls form {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px 10px;
    padding-top: 12px;
  }

  .converter-controls form > label,
  .converter-controls input[type="url"],
  .converter-width-row,
  .converter-controls input[type="range"],
  .converter-status {
    grid-column: 1 / -1;
  }

  .converter-controls .primary-button,
  .converter-controls .text-button {
    min-width: 0;
  }

  .converter-preview > header {
    grid-template-columns: minmax(0, 1fr);
  }

  .converter-display-controls {
    justify-content: flex-start;
  }

  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(260px, 38vh) minmax(0, 1fr);
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .toolbar {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: start;
    padding-right: max(12px, env(safe-area-inset-right));
    padding-left: max(12px, env(safe-area-inset-left));
  }

  .toolbar .controls {
    grid-column: 1 / -1;
  }

  .controls {
    justify-content: flex-start;
  }

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

  body.panel-hidden .app-shell {
    grid-template-rows: minmax(0, 1fr);
  }

  .floating-nav {
    bottom: 14px;
  }

  .grid-view {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 10px;
    padding: 12px;
  }

  .page-view {
    gap: 22px;
    padding: 14px;
  }

  .page-item header {
    display: grid;
    gap: 4px;
  }
}