/* ===== Theme colours (dark by default, light when data-theme="light") ===== */
:root {
  --bg: #161b22;
  --bg-2: #1f252d;
  --bg-3: #29303a;
  --bg-toolbar: #242a33;
  --btn-bg: #1f252d;
  --bg-group: rgba(255, 255, 255, 0.02);
  --hover: #38404b;
  --border: #38404b;
  --border-strong: #465060;
  --text: #e6edf3;
  --text-dim: #9ba5b1;
  --text-muted: #8b95a1;
  --text-output: #cdd6e0;
  --code-bg: #3d4652;
  --accent: #4493f8;
  --primary: #1f6feb;
  --primary-hover: #388bfd;
  --accent-2: #238636;
  --accent-2-hover: #2ea043;
  --danger: #f85149;
  --focus-ring: rgba(56, 189, 248, 0.25);
  --scrim: rgba(0, 0, 0, 0.55);
  --thumb: #38404b;
  --swatch-ring: #ffffff;
  --swatch-edge: transparent;
  --dot-border: rgba(255, 255, 255, 0.25);
  --check-done: #c9d1d9;
  --tick-color: #0d1117;
  --tick-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%230d1117' d='M13.78 4.22a.75.75 0 0 1 0 1.06l-7 7a.75.75 0 0 1-1.06 0l-3.5-3.5a.75.75 0 1 1 1.06-1.06L6.25 10.69l6.47-6.47a.75.75 0 0 1 1.06 0Z'/%3E%3C/svg%3E");
  color-scheme: dark;
  font-size: 15px;
}

:root[data-theme="light"] {
  --bg: #fefefe;
  --bg-2: #eef4fa;
  --bg-3: #f4f8fc;
  --bg-toolbar: #f0f5fb;
  --btn-bg: #f4f8fc;
  --bg-group: #f6f9fe;
  --hover: #e2ebf7;
  --border: #d5e0ef;
  --border-strong: #d0dcec;
  --text: #111c30;
  --text-dim: #50658a;
  --text-muted: #5a6f92;
  --text-output: #1a2740;
  --code-bg: #e4ecf7;
  --accent: #1465f6;
  --primary: #1157d6;
  --primary-hover: #0d47b0;
  --accent-2: #1f7a38;
  --accent-2-hover: #1a6b30;
  --danger: #d1242f;
  --focus-ring: rgba(9, 105, 218, 0.25);
  --scrim: rgba(31, 35, 40, 0.45);
  --thumb: #c5d3e8;
  --swatch-ring: #1f2328;
  --swatch-edge: rgba(0, 0, 0, 0.18);
  --dot-border: rgba(0, 0, 0, 0.25);
  --check-done: #50658a;
  --tick-color: #ffffff;
  --tick-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%23ffffff' d='M13.78 4.22a.75.75 0 0 1 0 1.06l-7 7a.75.75 0 0 1-1.06 0l-3.5-3.5a.75.75 0 1 1 1.06-1.06L6.25 10.69l6.47-6.47a.75.75 0 0 1 1.06 0Z'/%3E%3C/svg%3E");
  color-scheme: light;
}

/* ===== Base ===== */
* {
  box-sizing: border-box;
  scrollbar-width: thin;
  scrollbar-color: var(--thumb) transparent;
}

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Buttons shared by the toolbar, the actions bar, the title bar actions and the modals. */
.toolbar button, .actions button, .doc-actions button, .modal button {
  background: var(--btn-bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 4px;
  min-width: 30px;
  min-height: 30px;
  padding: 4px 6px;
  font-size: 0.85rem;
  cursor: pointer;
  line-height: 1;
}
.toolbar button:hover, .doc-actions button:hover { background: var(--hover); border-color: var(--accent); }
.modal button:hover { background: var(--hover); }
.modal button:focus-visible,
.toolbar button:focus-visible,
.actions button:focus-visible,
.doc-actions button:focus-visible,
.tab:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}
/* Drawn SVG icons follow the button colour. */
.toolbar button svg, .actions button svg, .doc-actions button svg {
  width: 16px;
  height: 16px;
  display: block;
  margin: 0 auto;
  fill: currentColor;
}

/* ===== Title bar ===== */
.topbar {
  padding: 12px 18px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
}
.topbar h1 { margin: 0; font-size: 1.45rem; font-weight: 600; letter-spacing: -0.01em; }
.topbar .accent { color: var(--accent); }
/* Descriptive tag next to the title, not part of the name. */
.topbar .for {
  margin-left: 10px;
  padding-left: 10px;
  border-left: 1px solid var(--border);
  font-size: 0.95rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--text-dim);
  white-space: nowrap;
}

/* Theme and full screen buttons at the right end of the actions bar. */
.actions .icon-only { padding: 8px; }
#btnTheme { margin-left: auto; }
.actions button[hidden] { display: none; }
/* The theme button shows the sun in the dark theme and the moon in the light one. */
:root:not([data-theme="light"]) .icon-moon,
:root[data-theme="light"] .icon-sun { display: none; }

/* ===== Actions bar (import, copy, download) ===== */
.actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 8px 14px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
}
.actions button { padding: 8px 12px; display: inline-flex; align-items: center; justify-content: center; gap: 6px; }
.actions button svg { margin: 0; flex: none; }

/* ===== Tabs ===== */
.tabs {
  display: flex;
  gap: 2px;
  background: var(--bg-2);
  padding: 0 8px;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}
.tab {
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 11px 18px;
  font-size: 1rem;
  cursor: pointer;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* Template, undo, redo and clear buttons, at the right end of the tabs. */
.doc-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  padding-left: 12px;
}
.doc-actions button { display: inline-flex; align-items: center; gap: 6px; }
.doc-actions button svg { flex: none; }

/* ===== Toolbar ===== */
.toolbar {
  background: var(--bg-toolbar);
  border-bottom: 1px solid var(--border);
  padding: 6px 10px;
}
/* Buttons stay on one row and scroll sideways when the window is small. */
.panel { display: none; flex-wrap: nowrap; gap: 8px; }
.panel.active { display: flex; overflow-x: auto; padding-bottom: 4px; }

.group {
  position: relative;
  flex: none;
  display: flex;
  align-items: center;
  gap: 3px;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 6px 14px 6px;
  background: var(--bg-group);
}
.group::after {
  content: attr(data-label);
  position: absolute;
  bottom: 1px;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 0.62rem;
  color: var(--text-dim);
}
.toolbar button.active-state { background: var(--accent-2); border-color: var(--accent); }
/* GitHub user button: icon plus name. */
#ghUserBtn { display: inline-flex; align-items: center; gap: 5px; }
#ghUserBtn svg { margin: 0; }
#ghUserName { font-size: 0.78rem; }
/* Checked task icon in the toolbar. */
.tick-box { fill: var(--check-done); stroke: var(--check-done); }
.tick-mark { stroke: var(--tick-color); }

/* ===== Workspace ===== */
.workspace {
  flex: 1;
  display: flex;
  min-height: 0;
}
.pane { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.pane-editor { border-right: 1px solid var(--border); }

.editor {
  flex: 1;
  padding: 18px 22px;
  overflow-y: auto;
  outline: none;
  line-height: 1.55;
}
.editor:empty::before {
  content: attr(data-placeholder);
  color: var(--text-dim);
}

/* Headings styled like GitHub. */
.editor h1, .editor h2, .editor h3,
.editor h4, .editor h5, .editor h6 {
  margin: 0.8em 0 0.4em;
  font-weight: 600;
  line-height: 1.25;
}
.editor h1 { font-size: 2em; padding-bottom: 0.3em; border-bottom: 1px solid var(--border-strong); }
.editor h2 { font-size: 1.5em; padding-bottom: 0.3em; border-bottom: 1px solid var(--border-strong); }
.editor h3 { font-size: 1.25em; }
.editor h4 { font-size: 1em; }
.editor h5 { font-size: 0.875em; }
.editor h6 { font-size: 0.85em; color: var(--text-muted); }

/* Quote, code, rule, table, image and link. */
.editor blockquote {
  margin: 0.5em 0;
  padding: 0 1em;
  border-left: 0.25em solid var(--border-strong);
  color: var(--text-muted);
}
.editor code { background: var(--code-bg); padding: 1px 5px; border-radius: 3px; font-family: monospace; }
.editor hr { border: none; height: 4px; background: var(--code-bg); margin: 24px 0; }
.editor pre {
  background: var(--bg-2);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  padding: 12px 14px;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85em;
}
.editor pre code { background: none; padding: 0; }
.editor table { border-collapse: collapse; margin: 0.9em 0; }
.editor th, .editor td {
  border: 1px solid var(--border-strong);
  padding: 6px 13px;
  min-width: 70px;
  text-align: left;
  vertical-align: top;
}
.editor th { background: var(--bg-3); font-weight: 600; }
.editor img { max-width: 100%; }
.editor a { color: var(--accent); }
.editor details { border: 1px solid var(--border); border-radius: 6px; padding: 6px 10px; margin: 0.5em 0; }
.editor summary { cursor: pointer; font-weight: 600; }

/* Nested list markers as on GitHub (roman numerals, letters, circle, square). */
.editor ul ul, .editor ol ul { list-style-type: circle; }
.editor ul ul ul, .editor ol ul ul, .editor ul ol ul, .editor ol ol ul { list-style-type: square; }
.editor ol ol, .editor ul ol { list-style-type: lower-roman; }
.editor ul ul ol, .editor ul ol ol, .editor ol ul ol, .editor ol ol ol { list-style-type: lower-alpha; }

/* Task list checkboxes. */
.editor ul[data-task] { list-style: none; padding-left: 1.6em; }
.editor ul[data-task] > li::before {
  content: "";
  display: inline-block;
  width: 13px;
  height: 13px;
  margin-right: 8px;
  vertical-align: -1px;
  border: 1px solid var(--border-strong);
  border-radius: 3px;
  background: var(--bg);
}
.editor ul[data-task] > li[data-done]::before {
  border-color: var(--check-done);
  background: var(--check-done) var(--tick-image) center/11px 11px no-repeat;
}

/* Collapsed spacer between adjacent blocks; opens under the cursor. */
.editor p[data-spacer] { margin: 0; height: 0; line-height: 0; font-size: 0; }
.editor p[data-spacer] br { display: none; }
.editor p[data-spacer].abierto { height: auto; line-height: inherit; font-size: inherit; margin: 0.5em 0; }
.editor p[data-spacer].abierto br { display: inline; }

/* ===== Markdown output ===== */
.output-head {
  padding: 8px 14px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.output {
  flex: 1;
  margin: 0;
  padding: 18px 22px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  color: var(--text-output);
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed; inset: 0;
  background: var(--scrim);
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
}
.modal-overlay.hidden { display: none; }
.modal {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  width: min(420px, 90vw);
  max-height: 88vh;
  overflow-y: auto;
}
.modal h3 { margin: 0 0 12px; font-size: 1rem; }
.modal label { display: block; font-size: 0.8rem; color: var(--text-dim); margin: 10px 0 4px; }
.modal label input[type=checkbox] { margin-right: 6px; }
.modal .hint { margin: 0 0 14px; font-size: 0.8rem; line-height: 1.4; color: var(--text-dim); }
.modal .hint + .gallery-rows > label:first-child { margin-top: 0; }
/* Service credit line under the modal title. */
.modal .service-note { margin: -6px 0 10px; font-size: 0.78rem; color: var(--text-dim); }
.modal .service-note a { color: var(--accent); }

/* Form fields. */
.modal input[type=text], .modal input[type=number], .modal input[type=url], .modal textarea, .modal select {
  width: 100%;
  background: var(--bg-3);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 5px;
  padding: 8px 10px;
  font-size: 0.9rem;
}
.modal textarea { font-family: inherit; resize: vertical; }
.modal input[type=number] { -moz-appearance: textfield; appearance: textfield; }
.modal input[type=number]::-webkit-outer-spin-button,
.modal input[type=number]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.modal input::placeholder, .modal textarea::placeholder { color: var(--text-dim); opacity: 1; }
.modal input:focus, .modal textarea:focus, .modal select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--focus-ring);
}
.modal input.invalid { border-color: var(--danger); }

/* Buttons: confirm, cancel, add row. */
.modal .row { display: flex; gap: 8px; margin-top: 16px; }
.modal .row button { flex: 1; padding: 9px; }
.modal .primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.modal .primary:hover { background: var(--primary-hover); }
.modal .add-row {
  width: 100%;
  margin-top: 10px;
  padding: 7px;
  font-size: 0.8rem;
  border-style: dashed;
  color: var(--text-dim);
}
.modal .add-row:hover { color: var(--text); border-color: var(--accent); }

/* Live preview, sticky at the top of the form. */
.modal .preview {
  position: sticky;
  top: 0;
  z-index: 2;
  margin-bottom: 14px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  text-align: center;
  min-height: 62px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
  justify-content: center;
}
.modal .preview img { max-width: 100%; max-height: 190px; }
.modal .preview-note { font-size: 0.68rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; }
.modal .preview.empty img { display: none; }
.modal .preview.failed::after {
  content: "Couldn't load. Check the details above, or the service may be down";
  font-size: 0.75rem;
  color: var(--danger);
}
.modal .preview.failed img { display: none; }

/* Colour swatches and palette. */
.modal .swatches { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.modal .swatch { width: 26px; height: 26px; border-radius: 5px; cursor: pointer; border: 2px solid transparent; box-shadow: inset 0 0 0 1px var(--swatch-edge); }
.modal .swatch.selected { border-color: var(--swatch-ring); }
.modal .palette { display: flex; gap: 5px; margin-top: 6px; }
.modal .palette-col { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.modal .palette .swatch { width: 100%; height: 22px; border-radius: 4px; }

/* Colour tabs (badge). */
.ctabs { display: flex; gap: 4px; margin: 2px 0 8px; }
.ctabs .ctab {
  flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: var(--bg-3); border: 1px solid var(--border); color: var(--text-dim);
  border-radius: 5px; padding: 6px 8px; font: inherit; font-size: 0.82rem; cursor: pointer;
}
.ctabs .ctab:hover { color: var(--text); }
.ctabs .ctab.active { color: var(--text); border-color: var(--accent); background: var(--hover); }
.ctabs .ctab.unused { opacity: 0.45; }
.ctab-dot { width: 12px; height: 12px; border-radius: 3px; border: 1px solid var(--dot-border); flex: none; }
.ctab-values .ctab-value { display: none; margin-top: 8px; }
.ctab-values .ctab-value.visible { display: block; }

/* Emoji and symbol pickers. */
.modal .emoji-scroll { max-height: 330px; overflow-y: auto; margin-top: 6px; padding-right: 4px; }
.modal .emoji-cat {
  position: sticky; top: 0;
  background: var(--bg-2);
  font-size: 0.7rem; color: var(--text-dim);
  text-transform: uppercase; letter-spacing: 0.04em;
  padding: 6px 0 4px;
}
.modal .emoji-grid { display: grid; grid-template-columns: repeat(9, 1fr); gap: 4px; }
.modal .emoji-grid.wide { grid-template-columns: repeat(2, 1fr); }
.modal .emoji-grid.wide button { font-size: 0.85rem; padding: 6px 4px; white-space: nowrap; overflow: hidden; }
.modal .emoji-grid button {
  font-size: 1.15rem;
  padding: 4px;
  min-width: 0;
  background: var(--bg-3);
  border-color: transparent;
}
.modal .emoji-grid button:hover { background: var(--hover); border-color: var(--accent); }

/* Technology icon list and image gallery rows. */
.modal .icon-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; max-height: 220px; overflow-y: auto; }
.modal .icon-grid label { display: flex; align-items: center; gap: 6px; font-size: 0.8rem; color: var(--text); }
.modal .gallery-rows { max-height: 230px; overflow-y: auto; padding: 2px 4px 2px 0; }

/* Fields shown only when a checkbox is ticked. */
.only-if-link { display: none; }
.only-if-link.visible { display: block; }
.modal label.check { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.modal label.check input { width: auto; margin: 0; }

/* ===== Toast ===== */
.toast {
  position: fixed; bottom: 60px; left: 50%; transform: translateX(-50%);
  background: var(--accent-2); color: #fff; padding: 8px 16px; border-radius: 6px;
  font-size: 0.85rem; z-index: 60;
}
.toast.hidden { display: none; }

/* ===== Responsive ===== */
/* Editor and Markdown switch on phones (hidden on desktop). */
.mobile-switch { display: none; }

@media (max-width: 768px) and (orientation: portrait) {
  .workspace { flex-direction: column; }
  .pane { display: none; }
  .pane.visible { display: flex; }
  .pane-editor { border-right: none; border-bottom: 1px solid var(--border); }
  .mobile-switch {
    display: flex;
    background: var(--bg-2);
    border-bottom: 1px solid var(--border);
  }
  .switch-btn {
    flex: 1; background: transparent; border: none; color: var(--text-dim);
    padding: 8px; font-size: 0.8rem; border-bottom: 2px solid transparent;
  }
  .switch-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
  .toolbar button, .actions button, .doc-actions button { min-width: 40px; min-height: 40px; }
  /* Compact action buttons on narrow screens. */
  .actions button { padding: 8px 10px; font-size: 0.82rem; }
  .doc-actions { gap: 4px; padding-left: 8px; }
  .doc-actions button { padding: 5px 6px; }
}

/* Short screens: landscape phones and squashed windows. */
@media (max-width: 900px) and (max-height: 599px) and (orientation: landscape) {
  .toolbar button { min-width: 33px; min-height: 33px; padding: 3px 4px; }
  .toolbar button svg { width: 15px; height: 15px; }
  .group { padding: 2px 4px 10px 4px; gap: 2px; }
  .group::after { font-size: 0.54rem; bottom: 1px; }
  .topbar { padding: 6px 12px; }
  .topbar h1 { font-size: 1.05rem; }
  .tab { padding: 7px 12px; font-size: 0.85rem; }
  .doc-actions button { min-width: 33px; min-height: 33px; padding: 4px 6px; }
  .toolbar { padding: 3px 8px; gap: 4px; }
  .editor, .output { padding: 10px 14px; }
  .actions { padding: 5px 10px; }
  .actions button { padding: 6px 10px; }
}

@media (max-width: 480px) {
  /* Import, copy and download keep only their icon so the actions bar fits on one row. */
  .actions .btn-label { display: none; }
  .actions button { padding: 8px; }
  .modal .icon-grid { grid-template-columns: repeat(3, 1fr); }
  .modal .emoji-grid { grid-template-columns: repeat(7, 1fr); }
  .modal .palette { gap: 3px; }
  .modal .palette-col { gap: 3px; }
  .modal .palette .swatch { height: 26px; }
}