:root {
    --bg: #0e0e0e;
    --fg: #c8c4bc;
    --dim: #383838;
    --dim2: #5a5a5a;
    --accent: #3d9a3d;
    --sidebar-w: 300px;
    --mono: 'JetBrains Mono', 'Courier New', monospace;
    --pad: 3rem;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  button, a { outline: none; -webkit-tap-highlight-color: transparent; }
  body {
    background: var(--bg);
    color: var(--fg);
    font-family: var(--mono);
    font-size: 15px;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
  }
  /* ── TOPBAR ── */
  #topbar {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.55rem 1rem;
    flex-shrink: 0;
  }
  #topbar .left, #topbar .right { display: flex; align-items: center; gap: 0.25rem; }
  .app-name {
    position: absolute;
    left: 50%; transform: translateX(-50%);
    font-size: 11px;
    letter-spacing: 0.25em;
    text-transform: lowercase;
    color: var(--dim2);
    user-select: none;
    pointer-events: none;
  }
  #sidebar-toggle, #cal-toggle, #spell-btn, #menu-toggle, #preview-btn, #tasks-btn, #sync-btn {
    background: none; border: none; cursor: pointer;
    color: var(--dim); line-height: 1;
    padding: 4px 6px;
    transition: color 0.15s;
    display: flex; align-items: center;
    text-decoration: none;
  }
  #sidebar-toggle:hover, #cal-toggle:hover, #spell-btn:hover, #menu-toggle:hover, #sync-btn:hover,
  #preview-btn:hover, #tasks-btn:hover { color: var(--fg); text-decoration: none; }
  #sidebar-toggle svg, #cal-toggle svg, #spell-btn svg, #menu-toggle svg, #sync-btn svg,
  #preview-btn svg, #tasks-btn svg { width: 16px; height: 16px; }
  #spell-btn { color: var(--accent); }
  #spell-btn:hover { color: var(--fg); }
  #preview-btn.active, #tasks-btn.active { color: var(--accent); }
  #sync-btn.spinning svg { animation: spin 1s linear infinite; }
  @keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
  #sync-btn.s-ok   { color: #3d9a3d; }
  #sync-btn.s-warn { color: #b8860b; }
  #sync-btn.s-err  { color: #8b2020; }
  #sync-btn.s-ok:hover, #sync-btn.s-warn:hover, #sync-btn.s-err:hover { color: var(--fg); }
  /* ── TASKS PANEL ── */
  #tasks-panel {
    display: none;
    position: absolute;
    inset: 0;
    background: var(--bg);
    flex-direction: column;
    z-index: 10;
    overflow: hidden;
  }
  #tasks-panel.active { display: flex; }
  #tasks-header {
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 11px;
    color: var(--dim2);
    flex-shrink: 0;
  }
  #tasks-body {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem 0;
  }
  .tasks-group-title {
    padding: 0.5rem 1rem 0.2rem;
    font-size: 10px;
    letter-spacing: 0.08em;
    color: var(--dim2);
    text-transform: lowercase;
    cursor: pointer;
  }
  .tasks-group-title:hover { color: var(--fg); }
  .task-row {
    display: flex;
    align-items: baseline;
    gap: 0.6em;
    padding: 0.3rem 1rem 0.3rem 1.4rem;
    font-size: 13px;
    color: var(--dim2);
  }
  .task-row:hover { color: var(--fg); }
  .task-row .tcb {
    width: 12px; height: 12px; flex-shrink: 0;
    border: 1px solid var(--dim2); border-radius: 2px;
    cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
    font-size: 9px; transition: background 0.1s;
    position: relative; top: 1px;
  }
  .task-row .tcb.checked { background: var(--accent); border-color: var(--accent); color: var(--bg); }
  .task-row .tcb.checked::after { content: '✓'; }
  .task-row .tlabel { flex: 1; }
  .task-row .tlabel.checked { color: var(--dim); text-decoration: line-through; }
  /* ── DROPDOWN ── */
  #dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 2px);
    right: 0.5rem;
    z-index: 200;
    background: var(--bg);
    border: 1px solid #1c1c1c;
    padding: 0.4rem 0;
    min-width: 160px;
    flex-direction: column;
  }
  #dropdown.active { display: flex; }
  #dropdown button {
    padding: 0.45rem 1rem;
    text-align: left;
    font-size: 11px;
    color: var(--dim2);
    text-decoration: none;
    letter-spacing: 0.04em;
    border-radius: 0;
  }
  #dropdown button:hover { color: var(--fg); text-decoration: none; background: none; }
  #dropdown .sep { height: 1px; background: #1e1e1e; margin: 0.3rem 0; }
  .api-dot {
    display: inline-block;
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--dim);
    margin-left: 0.4em;
    vertical-align: middle;
    transition: background 0.2s;
  }
  .api-dot.on  { background: #3d9a3d; }
  .api-dot.off { background: #8b2020; }
  /* ── MAIN LAYOUT ── */
  #layout { display: flex; flex: 1; overflow: hidden; }
  /* ── SIDEBAR ── */
  #sidebar {
    width: var(--sidebar-w);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: width 0.2s ease, opacity 0.2s ease;
    overflow: hidden;
  }
  #sidebar.collapsed { width: 0; opacity: 0; }
  #sidebar-inner {
    width: var(--sidebar-w);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
  }
  #file-list-wrap { flex: 1; overflow-y: auto; padding: 0.5rem 0; }
  .file-item {
    display: flex;
    align-items: center;
    padding: 0.55rem 1rem;
    cursor: pointer;
    font-size: 15px;
    color: var(--dim2);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.1s, background 0.1s;
    gap: 0.4rem;
  }
  .file-item:hover { color: var(--fg); }
  .file-item.active { color: var(--accent); }
  .file-item .fname { flex: 1; overflow: hidden; text-overflow: ellipsis; }
  .file-item .del-btn {
    opacity: 0; font-size: 12px; color: var(--dim);
    background: none; border: none; cursor: pointer;
    padding: 0 2px; line-height: 1;
    transition: opacity 0.1s, color 0.1s;
  }
  .file-item:hover .del-btn { opacity: 1; }
  .file-item .del-btn:hover { color: #886; }
  #sidebar-footer { padding: 0.5rem; display: flex; flex-direction: column; gap: 0.3rem; }
  #sidebar-footer button {
    background: none; border: none; cursor: pointer;
    text-align: left; font-family: var(--mono); font-size: 14px;
    color: var(--dim2); padding: 0.35rem 0.5rem; border-radius: 3px;
    transition: color 0.1s;
  }
  #sidebar-footer button:hover { color: var(--fg); }
  /* ── EDITOR ── */
  #editor-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
  }
  #editor {
    flex: 1;
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    resize: none;
    font-family: var(--mono);
    font-size: 19px;
    line-height: 1.82;
    color: var(--fg);
    padding: 1.4rem var(--pad) 2rem;
    overflow-y: auto;
    caret-color: var(--accent);
  }
  #editor::placeholder { color: var(--dim); }
  #editor-hl {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    pointer-events: none;
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: var(--mono);
    font-size: 19px;
    line-height: 1.82;
    padding: 1.4rem var(--pad) 2rem;
    color: transparent;
    overflow: hidden;
    z-index: 0;
  }
  #editor { position: relative; z-index: 1; background: transparent; }
  #editor-hl .bl-found   { color: #3d9a3d; }
  #editor-hl .bl-missing { color: var(--dim2); }
  /* ── PREVIEW ── */
  #preview {
    display: none;
    flex: 1;
    overflow-y: auto;
    padding: 1.4rem var(--pad) 2rem;
    font-family: var(--mono);
    font-size: 19px;
    line-height: 1.82;
    color: var(--fg);
  }
  #preview.active { display: block; flex: 1; }
  /* Cuando el preview está activo, ocultar el editor CM via clase en el área */
  #editor-area.preview-mode #editor-cm { display: none !important; }
  #editor-area.preview-mode #preview { display: block; }
  #preview h1 { font-size: 1.3em; font-weight: 600; color: var(--fg); margin: 1.2em 0 0.4em; }
  #preview h2 { font-size: 1.15em; font-weight: 600; color: var(--fg); margin: 1em 0 0.3em; }
  #preview h3 { font-size: 1em; font-weight: 600; color: var(--dim2); margin: 0.8em 0 0.2em; }
  #preview p  { margin: 0.5em 0; }
  #preview strong { color: var(--fg); font-weight: 700; }
  #preview em { font-style: italic; color: var(--fg); }
  #preview code { background: #191919; padding: 1px 5px; font-size: 0.88em; border-radius: 2px; }
  #preview pre { background: #191919; padding: 0.8em 1em; overflow-x: auto; margin: 0.6em 0; }
  #preview pre code { background: none; padding: 0; }
  #preview ul, #preview ol { padding-left: 1.4em; margin: 0.4em 0; }
  #preview li { margin: 0.2em 0; }
  #preview a { color: var(--accent); text-decoration: underline; }
  #preview .backlink { color: var(--accent); text-decoration: none; border-bottom: 1px dashed var(--accent); cursor: pointer; }
  #preview .backlink:hover { color: var(--fg); border-bottom-color: var(--fg); }
  #preview .backlink-missing { color: var(--dim2); border-bottom-color: var(--dim2); }
  #preview .backlink-missing:hover { color: var(--fg); border-bottom-color: var(--fg); }
  #preview hr { border: none; border-top: 1px solid var(--dim); margin: 1em 0; }
  #preview blockquote { border-left: 2px solid var(--dim2); padding-left: 0.8em; color: var(--dim2); margin: 0.5em 0; }
  /* checkboxes en preview */
  #preview .task-item { list-style: none; display: flex; align-items: baseline; gap: 0.5em; margin: 0.25em 0; }
  #preview .task-cb {
    width: 13px; height: 13px; flex-shrink: 0;
    border: 1px solid var(--dim2); border-radius: 2px;
    cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
    font-size: 10px; color: var(--accent); transition: background 0.1s;
    position: relative; top: 1px;
  }
  #preview .task-cb.checked { background: var(--accent); border-color: var(--accent); color: var(--bg); }
  #preview .task-cb.checked::after { content: '✓'; }
  #preview .task-label.checked { color: var(--dim2); text-decoration: line-through; }
  /* ── DIFF ── */
  #diff-overlay {
    display: none;
    position: absolute;
    inset: 0;
    background: var(--bg);
    flex-direction: column;
    z-index: 10;
  }
  #diff-overlay.active { display: flex; }
  #diff-header {
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 11px;
    color: var(--dim2);
    gap: 0.5rem;
    flex-wrap: wrap;
  }
  #diff-body {
    flex: 1;
    overflow-y: auto;
    padding: 1.2rem var(--pad);
    font-family: var(--mono);
    font-size: 14px;
    line-height: 1.75;
    white-space: pre-wrap;
    word-break: break-word;
  }
  .diff-del { color: #664; text-decoration: line-through; opacity: 0.7; }
  .diff-ins { color: var(--accent); }
  #diff-actions { padding: 0.5rem 1rem; display: flex; gap: 0.5rem; justify-content: flex-end; }
  /* ── PANELS ── */
  #api-panel, #gh-panel, #crypto-panel, #vault-panel {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(10,10,10,0.92);
    z-index: 100;
    align-items: center;
    justify-content: center;
  }
  #api-panel.active, #gh-panel.active, #crypto-panel.active, #vault-panel.active { display: flex; }
  #api-box, #gh-box, #crypto-box, #vault-box {
    border: 1px solid #191919;
    padding: 2rem;
    width: min(380px, 92vw);
    background: var(--bg);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }
  #api-box h2, #gh-box h2, #crypto-box h2, #vault-box h2 { font-size: 11px; font-weight: normal; letter-spacing: 0.1em; color: var(--dim2); }
  #api-box p, #gh-box p, #crypto-box p, #vault-box p { font-size: 11px; color: var(--dim2); line-height: 1.6; }
  #gh-box code { font-family: var(--mono); background: #191919; padding: 1px 4px; font-size: 10px; }
  /* ── GENERIC ── */
  input[type="text"], input[type="password"] {
    background: transparent;
    border: 1px solid #191919;
    color: var(--fg);
    font-family: var(--mono);
    font-size: 12px;
    padding: 0.4rem 0.6rem;
    width: 100%;
    outline: none;
  }
  button {
    font-family: var(--mono);
    font-size: 12px;
    cursor: pointer;
    padding: 0;
    border: none;
    background: transparent;
    color: var(--dim2);
    letter-spacing: 0.06em;
    transition: color 0.1s;
    white-space: nowrap;
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: transparent;
  }
  button:hover { color: var(--fg); text-decoration-color: var(--dim2); }
  button:disabled { opacity: 0.25; cursor: default; }
  button.primary, button.ghost { background: transparent; border: none; }
  .spinner {
    display: inline-block;
    width: 10px; height: 10px;
    border: 1.5px solid #333;
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    vertical-align: middle;
    margin-right: 4px;
  }
  @keyframes spin { to { transform: rotate(360deg); } }
  .msg { font-size: 12px; color: var(--dim2); }
  .msg.ok { color: var(--accent); }
  .msg.err { color: #886; }
  /* ── STATUSBAR ── */
  #statusbar {
    padding: 0.3rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    gap: 1rem;
    flex-wrap: wrap;
  }
  #statusbar .left { display: flex; align-items: center; gap: 1.2rem; }
  .stat { font-size: 12px; color: var(--dim); }
  /* ── SEARCH ── */
  #search-wrap { padding: 0.4rem 0.5rem; flex-shrink: 0; }
  #search-input {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--dim);
    color: var(--fg);
    font-family: var(--mono);
    font-size: 12px;
    padding: 0.25rem 0.3rem;
    width: 100%;
    outline: none;
  }
  #search-input::placeholder { color: var(--dim); }
  #search-input:focus { border-bottom-color: var(--dim2); }
  /* ── RIGHT PANEL ── */
  #right-panel {
    width: var(--sidebar-w);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: width 0.2s ease, opacity 0.2s ease;
    overflow: hidden;
  }
  #right-panel.collapsed { width: 0; opacity: 0; }
  #right-inner {
    width: var(--sidebar-w);
    padding: 0.75rem 0.7rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    overflow-y: auto;
  }
  /* ── CALENDAR ── */
  #cal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.3rem; }
  #cal-title { font-size: 15px; letter-spacing: 0.08em; color: var(--dim2); }
  .cal-nav {
    font-size: 15px; color: var(--dim); background: none;
    border: none; cursor: pointer; padding: 0 3px; line-height: 1;
    text-decoration: none; transition: color 0.1s;
  }
  .cal-nav:hover { color: var(--fg); text-decoration: none; }
  #cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 1px; }
  .cal-dow { font-size: 14px; color: var(--dim); text-align: center; padding: 3px 0 6px; }
  .cal-day {
    font-size: 15px; text-align: center; padding: 5px 2px;
    cursor: pointer; color: var(--dim2); border-radius: 2px;
    transition: color 0.1s, background 0.1s; line-height: 1.5;
    user-select: none;
  }
  .cal-day:hover { color: var(--fg); background: var(--dim); }
  .cal-day.has-note { color: var(--accent); }
  .cal-day.today { color: var(--fg); }
  .cal-day.today.has-note { color: var(--accent); font-weight: bold; }
  .cal-day.active-note { background: var(--dim); }
  .cal-day.empty { cursor: default; }
  .cal-day.empty:hover { color: var(--dim2); background: none; }
  /* ── MOBILE ── */
  @media (max-width: 540px) {
    :root { --pad: 1.4rem; --sidebar-w: 300px; }
    #editor, #editor-hl { font-size: 18px; }
    .app-name { display: none; }
  }
  @media (max-width: 768px) {
    #sidebar {
      position: fixed;
      left: 0; top: 0; bottom: 0;
      z-index: 50;
      width: var(--sidebar-w) !important;
      opacity: 1 !important;
      transform: translateX(0);
      transition: transform 0.25s ease;
      background: var(--bg);
      padding-top: env(safe-area-inset-top);
      padding-bottom: env(safe-area-inset-bottom);
    }
    #sidebar.collapsed {
      width: var(--sidebar-w) !important;
      opacity: 1 !important;
      transform: translateX(calc(-100% - 2px));
    }
    #right-panel {
      position: fixed;
      right: 0; top: 0; bottom: 0;
      z-index: 50;
      width: var(--sidebar-w) !important;
      opacity: 1 !important;
      transform: translateX(0);
      transition: transform 0.25s ease;
      display: flex !important;
      background: var(--bg);
      padding-top: env(safe-area-inset-top);
      padding-bottom: env(safe-area-inset-bottom);
    }
    #right-panel.collapsed { transform: translateX(calc(100% + 2px)); }
  }
  ::-webkit-scrollbar { width: 2px; }
  ::-webkit-scrollbar-track { background: transparent; }
  ::-webkit-scrollbar-thumb { background: var(--dim); }

  /* ── BACKLINKS ── */
  .backlinks-section {
    margin-top: 2.5em;
    padding-top: 0;
  }
  .backlinks-header {
    font-size: 10px;
    letter-spacing: 0.12em;
    color: var(--dim2);
    text-transform: lowercase;
    margin-bottom: 0.8em;
  }
  .backlink-item {
    margin-bottom: 0.9em;
  }
  .backlink-source {
    font-size: 12px;
    color: var(--dim2);
    cursor: pointer;
    letter-spacing: 0.04em;
    display: block;
    margin-bottom: 0.2em;
    transition: color 0.1s;
  }
  .backlink-source:hover {
    color: var(--fg);
  }
  .backlink-excerpt {
    font-size: 13px;
    color: var(--dim2);
    padding: 0.25em 0.7em;
    border-left: 1px solid var(--dim);
    line-height: 1.7;
    word-break: break-word;
  }
  .backlink-excerpt .bl-ref {
    color: var(--accent);
  }

  /* ── CODEMIRROR EDITOR ── */
  #editor-cm {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }
  #editor-cm .cm-editor {
    flex: 1;
    height: 100%;
    background: transparent;
  }
  #editor-cm .cm-editor.cm-focused {
    outline: none;
  }
  #editor-cm .cm-scroller {
    overflow: auto;
    padding: 0;
  }
  /* Wikilinks en CodeMirror */
  #editor-cm .cm-wikilink {
    color: #3d9a3d;
    border-bottom: 1px dashed #3d9a3d;
  }
  #editor-cm .cm-wikilink-missing {
    color: #5a5a5a;
    border-bottom: 1px dashed #5a5a5a;
  }
  /* Mobile */
  @media (max-width: 540px) {
    #editor-cm .cm-content { font-size: 18px; padding: 1.4rem 1.4rem 2rem; }
  }

  /* ── BACKLINKS EN EDITOR ── */
  #editor-backlinks {
    display: none;
    flex-shrink: 0;
    padding: 0 3rem 1.5rem;
    overflow-y: auto;
    max-height: 35vh;
    margin-top: 0.5rem;
  }
  #editor-backlinks.has-links {
    display: block;
  }
  @media (max-width: 540px) {
    #editor-backlinks { padding: 0 1.4rem 1.5rem; }
  }

/* ── WIKILINK AUTOCOMPLETE ── */
#wl-autocomplete {
  display: none;
  position: fixed;
  z-index: 9999;
  background: #181818;
  border: 1px solid var(--dim);
  border-radius: 4px;
  min-width: 200px;
  max-width: 320px;
  max-height: 220px;
  overflow-y: auto;
  padding: 4px 0;
  box-shadow: 0 4px 16px rgba(0,0,0,0.6);
  font-family: var(--mono);
  font-size: 13px;
}
#wl-autocomplete.wl-active {
  display: block;
}
#wl-autocomplete::-webkit-scrollbar { width: 2px; }
#wl-autocomplete::-webkit-scrollbar-thumb { background: var(--dim); }
.wl-item {
  padding: 5px 12px;
  cursor: pointer;
  color: var(--dim2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
  user-select: none;
}
.wl-item:hover {
  color: var(--fg);
  background: #222;
}
.wl-item-active {
  color: var(--fg);
  background: #1e2e1e;
  border-left: 2px solid var(--accent);
  padding-left: 10px;
}

/* ── MERMAID ── */
.mermaid-wrap {
  overflow: scroll;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  background: #0a0a0a;
  border: 1px solid #1e1e1e;
  border-radius: 2px;
  padding: 1rem;
  margin: 0.75rem 0;
  /* altura fija para que el scroll sea visible en móvil */
  max-height: 70vh;
  /* mostrar siempre las barras en desktop */
  scrollbar-width: thin;
  scrollbar-color: #3d9a3d #111;
}
.mermaid-wrap .mermaid {
  /* inline-block para que tome el tamaño natural del SVG */
  display: inline-block;
}
/* el SVG mantiene su tamaño natural, NO se estira al contenedor */
.mermaid-wrap svg {
  display: block !important;
  width: unset !important;
  max-width: unset !important;
  height: unset !important;
  max-height: unset !important;
}