:root {
  color-scheme: dark;
  font-family: "SF Pro Text", "Segoe UI", "Helvetica Neue", "Noto Sans", sans-serif;
  font-size: var(--base-font-size, 16px);
  line-height: 1.5;
  font-weight: 400;
  --bg: #141414;
  --bg-elevated: #1b1b1b;
  --panel: #1b1b1b;
  --ink: #e5e5e5;
  --muted: #a0a0a0;
  --accent: #3a3a3a;
  --accent-strong: #5a5a5a;
  --accent-warm: #5a5a5a;
  --border: #2a2a2a;
  --shadow: 0 14px 30px rgba(0, 0, 0, 0.45);
  --radius: 16px;
  --bg-input: #151515;
  --bg-contrast: #1f1f1f;
  --bg-contrast-strong: #242424;
  --bg-active: #202020;
  --border-strong: #555;
  --danger-hover: #4f4f4f;
  --tree-line: #5f5f5f;
}

body[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f4f4;
  --bg-elevated: #ffffff;
  --panel: #f2f2f2;
  --ink: #1b1b1b;
  --muted: #5f5f5f;
  --border: #d3d3d3;
  --accent: #e1e1e1;
  --accent-strong: #c1c1c1;
  --accent-warm: #d0d0d0;
  --shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
  --bg-input: #ffffff;
  --bg-contrast: #f5f5f5;
  --bg-contrast-strong: #ececec;
  --bg-active: #e6e6e6;
  --border-strong: #b5b5b5;
  --danger-hover: #d6d6d6;
  --tree-line: #9a9a9a;
}


* {
  box-sizing: border-box;
}

body {
  margin: 0;
  height: 100vh;
  overflow: hidden;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
}

#root {
  height: 100vh;
  min-height: 100vh;
}

.app {
  display: grid;
  grid-template-columns: 300px 1fr;
  height: 100vh;
  min-height: 100vh;
}

.app--sidebar-collapsed {
  grid-template-columns: 1fr;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px 0 16px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  height: 100vh;
  overflow: hidden;
}

.sidebar__header {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-left: 24px;
  padding-right: 24px;
}

.sidebar__title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

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

.sidebar__footer {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  justify-content: center;
  margin-top: auto;
  padding: 0 24px;
}

.sidebar__footer .icon-button {
  width: 36px;
  height: 36px;
}

.app-title {
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
}

.search {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--ink);
  font-size: 0.95rem;
}

.button {
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 10px 16px;
  background: var(--bg-elevated);
  color: var(--ink);
  font-size: 0.95rem;
  cursor: pointer;
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
}

.button:hover {
  box-shadow: var(--shadow);
  border-color: rgba(255, 255, 255, 0.12);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  box-shadow: none;
}

.button--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--ink);
}

.button--primary:hover {
  border-color: var(--accent-strong);
}

.button--danger {
  background: var(--accent-warm);
  border-color: var(--accent-warm);
  color: var(--ink);
}

.button--danger:hover {
  border-color: var(--accent-strong);
  background: var(--danger-hover);
}

.button--save {
}

.prompt-list {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow-y: auto;
  padding: 0;
  min-height: 0;
}

.prompt-list__inner {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0 16px 16px 16px;
}

.prompt-item {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
  text-align: left;
  position: relative;
  border-radius: 14px;
  border: 1px solid transparent;
  background: var(--bg-elevated);
  padding: 12px 48px 12px 14px;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.prompt-item:hover {
  border-color: rgba(255, 255, 255, 0.12);
}

.prompt-item.is-active {
  border-color: var(--border-strong);
  background: var(--bg-active);
}

.prompt-item__content {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.prompt-item__input {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px 10px;
}

.prompt-item__delete {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: absolute;
  top: 4px;
  right: 8px;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.prompt-item__delete:hover {
  border-color: transparent;
  background: transparent;
  color: var(--ink);
}

.prompt-item__title {
  font-weight: 600;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.folder-node {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 1px solid transparent;
}

.folder-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 14px;
  border: 1px solid var(--tree-line);
  background: var(--bg-elevated);
  color: var(--ink);
  cursor: pointer;
  transition: none;
  position: relative;
}

body:not([data-theme="light"]) .prompt-item,
body:not([data-theme="light"]) .folder-item {
  background: var(--bg-contrast);
}

.folder-item__toggle {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  padding: 0;
  margin-left: -4px;
  font-size: 1.6rem;
  transform: translateY(-3px);
}

.folder-item__lead {
  display: inline-flex;
  align-items: center;
  gap: 1px;
}

.folder-item__icon {
  width: 1em;
  height: 1em;
  flex: 0 0 1em;
  display: block;
}

.folder-item__title {
  font-weight: 600;
  flex: 1;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.folder-item__delete {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  margin-left: 6px;
}

.folder-item__delete:hover {
  color: var(--ink);
}

.folder-item__input {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px 10px;
}

.folder-children {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 6px;
  padding-left: 18px;
  position: relative;
}

.folder-children > * {
  position: relative;
}

.folder-children > *::after {
  content: "";
  position: absolute;
  left: -12px;
  top: -10px;
  bottom: -10px;
  width: 1px;
  background: var(--tree-line);
}

.folder-children > :first-child::after {
  top: -16px;
}

.folder-children > :last-child::after {
  bottom: 50%;
}

.folder-children .folder-item::before,
.folder-children .prompt-item::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 50%;
  width: 12px;
  height: 1px;
  background: var(--tree-line);
  transform: translateY(-50%);
}

.workspace {
  padding: 16px 32px;
  height: 100%;
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.workspace__body {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.workspace__topbar {
  position: absolute;
  top: 24px;
  left: 8px;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 5;
}

.workspace__topbar .icon-button {
  width: 24px;
  height: 24px;
  border-radius: 8px;
  font-size: 0.9rem;
}

.workspace__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  flex: 1;
  min-height: 0;
}

.workspace__content--history {
  grid-template-columns: minmax(0, 1fr) 260px;
}

.editor {
  display: flex;
  flex-direction: column;
  gap: 16px;
  /* padding: 24px; */
  /* border-radius: var(--radius); */
  /* background: var(--bg-elevated); */
  /* box-shadow: var(--shadow); */
  min-height: 0;
  height: 100%;
}

.editor__header {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.editor__title-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.editor__title-row .title-input {
  flex: 1;
}

.title-input {
  font-size: 1.6rem;
  border: none;
  border-bottom: 2px solid var(--border);
  padding: 6px 2px 8px;
  background: transparent;
  color: var(--ink);
}

.title-input:focus {
  outline: none;
  border-bottom-color: var(--accent-strong);
}

.status-line {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--muted);
}

.status-line--secondary {
  margin-top: 4px;
  font-size: 0.82rem;
}

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--muted);
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.icon-button--ghost {
  border-color: transparent;
  background: transparent;
}

.icon-button--ghost:hover {
  border-color: rgba(255, 255, 255, 0.12);
  background: var(--bg-elevated);
  color: var(--ink);
}

.icon-button__img {
  width: 18px;
  height: 18px;
  display: block;
}

.icon-button__glyph {
  font-size: 1rem;
  line-height: 1;
}

.icon-button__glyph--large {
  font-size: 1.1rem;
}

.icon-button:hover {
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--ink);
}

.icon-button.is-active {
  border-color: var(--accent-strong);
  color: var(--ink);
  background: var(--bg-active);
}

.status {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #3c3c3c;
}

.status--saved {
  background: #b3b3b3;
}

.status--draft {
  background: #8f8f8f;
}

.status--unsaved {
  background: #d0d0d0;
}

.status--history {
  background: #707070;
}

.editor__textarea-wrap {
  flex: 1;
  display: flex;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  overflow: hidden;
}

.editor__textarea-wrap--preview {
  border-color: transparent;
}

.editor__textarea-wrap--split {
  flex-direction: row;
}

.editor__textarea-wrap--split .editor__codemirror {
  flex: 1;
  border-right: 1px solid var(--border);
}

.editor__textarea-wrap--split .markdown-preview {
  flex: 1;
}

.editor__textarea-wrap:focus-within {
  border-color: rgba(255, 255, 255, 0.18);
}

.editor__codemirror {
  flex: 1;
  width: 100%;
  min-height: 0;
}

.editor__codemirror--hidden {
  display: none;
}

.editor__codemirror .cm-editor {
  height: 100%;
  background: transparent;
  color: var(--ink);
  font-family: inherit;
  font-size: var(--base-font-size);
  line-height: 1.5;
}

.editor__codemirror .cm-editor.cm-focused > .cm-scroller > .cm-cursorLayer .cm-cursor,
.editor__codemirror .cm-dropCursor {
  border-left-color: #f5f5f5 !important;
  border-left-width: 1.6px !important;
}

.editor__codemirror .cm-fatCursor {
  background: rgba(245, 245, 245, 0.45);
}

.editor__codemirror .cm-scroller {
  overflow: auto;
}

.editor__codemirror .cm-content {
  padding: 14px;
}

.editor__codemirror .cm-gutters {
  background: var(--bg-contrast);
  border-right: 1px solid var(--border);
  color: var(--muted);
}

.editor__codemirror .cm-gutterElement {
  padding: 0 10px 0 0;
}

.editor__codemirror .cm-activeLineGutter {
  background: transparent;
}

.editor__codemirror .cm-panels {
  background: var(--bg-elevated);
  color: var(--ink);
  border-bottom: 1px solid var(--border);
}

.editor__codemirror .cm-panels-top {
  border-bottom: 1px solid var(--border);
}

.editor__codemirror .cm-search {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 10px 12px;
}

.editor__codemirror .cm-search label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
}

.editor__codemirror .cm-search input,
.editor__codemirror .cm-search button {
  font: inherit;
}

.editor__codemirror .cm-search input[type="text"] {
  min-width: 220px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--ink);
}

.editor__codemirror .cm-search button {
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 8px 10px;
  background: var(--bg-input);
  color: var(--ink);
  cursor: pointer;
}

.editor__codemirror .cm-search button:hover {
  border-color: var(--accent-strong);
}

.editor__codemirror .cm-search [name="close"] {
  padding-left: 12px;
  padding-right: 12px;
}

.editor__codemirror .cm-search input[type="checkbox"] {
  accent-color: var(--ink);
}

.editor__codemirror .cm-searchMatch {
  background: rgba(214, 214, 96, 0.28);
  outline: 1px solid rgba(214, 214, 96, 0.38);
}

.editor__codemirror .cm-searchMatch.cm-searchMatch-selected {
  background: rgba(233, 216, 112, 0.42);
}

.markdown-preview {
  flex: 1;
  width: 100%;
  overflow-y: auto;
  padding: 14px;
  color: var(--ink);
}

.markdown-preview--hidden {
  display: none;
}

.editor__footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.editor__footer-status {
  margin-left: auto;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.editor__stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--muted);
}

.banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-contrast);
}

.banner__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.banner--draft {
  border-color: #3a3a3a;
  background: var(--bg-contrast);
}

.banner--history {
  border-color: #3a3a3a;
  background: var(--bg-contrast);
}

.history {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  background: var(--panel);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  height: 100%;
  min-height: 0;
}

.history__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.95rem;
}

.history__close {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color 0.15s ease;
}

.history__close:hover {
  color: var(--ink);
}

.history__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
}

.history__item {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
  text-align: left;
  position: relative;
  border: 1px solid transparent;
  border-radius: 12px;
  background: var(--bg-contrast);
  padding: 10px 42px 10px 12px;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.history__item.is-active {
  border-color: var(--border-strong);
  background: var(--bg-contrast-strong);
}

.history__item-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.history__item-delete {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: absolute;
  top: 6px;
  right: 6px;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.history__item-delete:hover {
  border-color: transparent;
  background: transparent;
  color: var(--ink);
}

.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 20;
}

.modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
}

.modal__card {
  position: relative;
  z-index: 1;
  width: min(420px, 92vw);
  padding: 22px;
  border-radius: 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal__title {
  font-size: 1.2rem;
}

.modal__message {
  color: var(--muted);
}

.modal__actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.history__item-title {
  font-weight: 600;
}

.history__item-meta {
  font-size: 0.8rem;
  color: var(--muted);
}

.empty {
  color: var(--muted);
  font-size: 0.9rem;
}

.empty-state {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
  padding: 32px;
  border-radius: var(--radius);
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
  max-width: 520px;
}

.empty-state__title {
  font-size: 1.6rem;
}

.empty-state__subtitle {
  color: var(--muted);
}

@media (max-width: 900px) {
  body {
    height: auto;
    overflow: auto;
  }

  #root {
    height: auto;
  }

  .app {
    grid-template-columns: 1fr;
    height: auto;
  }

  .sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border);
    height: auto;
  }

  .workspace {
    padding: 20px;
    height: auto;
    overflow: visible;
  }

  .workspace__content {
    height: auto;
  }

  .workspace__content--history {
    grid-template-columns: 1fr;
  }

  .editor {
    height: auto;
  }

  .history {
    height: auto;
  }
}

.settings-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  z-index: 30;
}

.settings-overlay__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
}

.settings-panel {
  position: relative;
  z-index: 1;
  width: min(420px, 92vw);
  padding: 20px;
  border-radius: 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.settings-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.settings-panel__title {
  font-size: 1.1rem;
}

.settings-panel__section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.settings-panel__section-title {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 4px;
}

.settings-panel__label {
  font-size: 0.9rem;
  color: var(--muted);
}

.settings-panel__input,
.settings-panel__textarea {
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--ink);
  padding: 8px 10px;
  font-size: 0.95rem;
}

.settings-panel__textarea {
  resize: vertical;
  min-height: 120px;
}

.settings-panel__select {
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--ink);
  padding: 8px 10px;
  font-size: 0.95rem;
}

.settings-panel__slider-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.settings-panel__range {
  flex: 1;
}

.settings-panel__value {
  min-width: 44px;
  text-align: right;
  color: var(--muted);
  font-size: 0.9rem;
}

.settings-panel__hint {
  font-size: 0.8rem;
  color: var(--muted);
}

body[data-theme="light"] .editor__textarea-wrap:focus-within {
  border-color: var(--accent-strong);
}

body[data-theme="light"] .editor__codemirror .cm-editor.cm-focused > .cm-scroller > .cm-cursorLayer .cm-cursor,
body[data-theme="light"] .editor__codemirror .cm-dropCursor {
  border-left-color: #1f1f1f !important;
  border-left-width: 1.6px !important;
}

body[data-theme="light"] .editor__codemirror .cm-fatCursor {
  background: rgba(31, 31, 31, 0.28);
}

body[data-theme="light"] .editor__codemirror .cm-searchMatch {
  background: rgba(219, 199, 81, 0.3);
  outline-color: rgba(170, 141, 33, 0.28);
}

body[data-theme="light"] .editor__codemirror .cm-searchMatch.cm-searchMatch-selected {
  background: rgba(219, 199, 81, 0.44);
}

.settings-panel__section--row {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
}

.settings-panel__section--row .settings-panel__label {
  margin: 0;
}

@media print {
  body.print-markdown {
    --bg: #ffffff;
    --bg-elevated: #ffffff;
    --panel: #ffffff;
    --ink: #111111;
    --muted: #444444;
    --border: #dddddd;
    --bg-input: #ffffff;
    --bg-contrast: #f5f5f5;
    --bg-contrast-strong: #eeeeee;
    background: #ffffff;
    color: #111111;
  }

  body.print-markdown .app {
    display: block;
    height: auto;
  }

  body.print-markdown .sidebar,
  body.print-markdown .history,
  body.print-markdown .editor__header,
  body.print-markdown .editor__footer {
    display: none !important;
  }

  body.print-markdown .workspace__content {
    grid-template-columns: 1fr;
    gap: 0;
  }

  body.print-markdown .editor__textarea-wrap {
    border-color: transparent;
    background: transparent;
    overflow: visible;
  }

  body.print-markdown .editor__codemirror {
    display: none !important;
  }

  body.print-markdown .editor__textarea-wrap--split {
    display: block;
  }

  body.print-markdown .markdown-preview {
    padding: 32px 36px;
    overflow: visible;
  }

  body.print-markdown .md-codeblock__copy,
  body.print-markdown .md-icon-external {
    display: none !important;
  }
}