:root {
      color-scheme: dark;
      --bg: #0c0d14;
      --panel: rgba(255,255,255,.07);
      --panel-2: rgba(255,255,255,.05);
      --text: #f7f3ff;
      --muted: #bcaee0;
      --accent: #9f7cff;
      --danger: #ff7a9a;
      --border: rgba(255,255,255,.12);
      --shadow: 0 25px 60px rgba(0,0,0,.35);
      --radius: 22px;
      --success: #90f0bd;
      --warning: #ffd98e;
    }
    * { box-sizing: border-box; }
    body {
      margin: 0;
      font-family: Inter, system-ui, sans-serif;
      background:
        radial-gradient(circle at top left, rgba(159,124,255,.22), transparent 35%),
        radial-gradient(circle at top right, rgba(110,231,200,.16), transparent 28%),
        linear-gradient(180deg, #161221, var(--bg) 40%);
      color: var(--text);
      min-height: 100vh;
    }
    .wrap { width: min(1380px, calc(100vw - 28px)); margin: 28px auto 48px; display: grid; gap: 18px; }
    .hero, .panel, dialog {
      background: var(--panel);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      backdrop-filter: blur(14px);
      color: var(--text);
    }
    .hero { padding: 24px; display: grid; gap: 10px; }
    .hero h1 { margin: 0; font-size: clamp(1.8rem, 4vw, 3rem); }
    .hero p { margin: 0; color: var(--muted); line-height: 1.6; }
    .layout { display: grid; grid-template-columns: 430px minmax(0, 1fr); gap: 18px; align-items: start; }
    .panel { padding: 18px; }
    .sidebar { display: grid; gap: 18px; }
    .panel h2, .panel h3, dialog h3 { margin: 0 0 14px; }
    label { display: block; font-size: .92rem; margin: 12px 0 6px; color: var(--muted); }
    input, select, textarea, button {
      width: 100%;
      border: 1px solid var(--border);
      background: var(--panel-2);
      color: var(--text);
      border-radius: 14px;
      padding: 12px 14px;
      font: inherit;
    }
    select, select option, select optgroup {
      background: #171824;
      color: #f7f3ff;
    }
    input[type="color"] { padding: 4px; min-height: 44px; }
    input::placeholder, textarea::placeholder { color: #b9acd9; }
    textarea { min-height: 100px; resize: vertical; }
    .row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .actions { display: flex; gap: 16px; margin-top: 18px; flex-wrap: wrap; }
    button { cursor: pointer; transition: .18s ease; font-weight: 700; }
    button:hover { transform: translateY(-1px); filter: brightness(1.05); }
    button.primary { background: linear-gradient(135deg, var(--accent), #7c5cff); }
    button.secondary { background: rgba(255,255,255,.08); }
    button.danger { background: rgba(255,122,154,.14); border-color: rgba(255,122,154,.35); color: #ffd7e3; }
    button.success { background: rgba(144,240,189,.14); border-color: rgba(144,240,189,.35); color: #d9ffe7; }
    button.small { width: auto; padding: 8px 12px; }
    .toolbar { display: grid; grid-template-columns: 1.2fr .9fr .9fr .8fr .8fr; gap: 10px; margin-bottom: 12px; }
    .stats { display: flex; flex-wrap: wrap; gap: 10px; margin: 8px 0 16px; }
    .badge { padding: 8px 12px; border-radius: 999px; background: rgba(255,255,255,.07); border: 1px solid var(--border); color: var(--muted); font-size: .92rem; }
    .list { display: grid; gap: 12px; max-height: 75vh; overflow: auto; padding-right: 4px; }
    .todo-group { display: grid; gap: 10px; }
    .group-header { display: flex; justify-content: space-between; gap: 12px; align-items: center; padding: 10px 14px; border-radius: 16px; }
    .group-title { font-weight: 700; }
    .todo { padding: 16px; border-radius: 18px; border: 1px solid var(--border); background: rgba(255,255,255,.045); display: grid; gap: 10px; }
    .todo.done { opacity: .72; }
    .todo.done .title { text-decoration: line-through; }
    .todo-top, .todo-meta, .todo-actions, .subtask-row, .subtask-actions, .category-row, .inline-note, .color-inline, .subtask-inline-edit, .release-head { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
    .todo-summary {
      width: 100%;
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 12px;
      cursor: pointer;
      user-select: none;
    }
    .todo-main { display: grid; gap: 8px; flex: 1; min-width: 0; }
    .category-label {
      display: inline-flex;
      align-items: center;
      width: fit-content;
      padding: 6px 10px;
      border-radius: 999px;
      font-size: .78rem;
      font-weight: 700;
      letter-spacing: .02em;
      border: 1px solid transparent;
      box-shadow: inset 0 0 0 1px rgba(255,255,255,.08);
    }
    .category-dot {
      width: 14px;
      height: 14px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.25);
      flex-shrink: 0;
    }
    .todo-toggle {
      min-width: 44px;
      max-width: 44px;
      height: 44px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 14px;
      background: rgba(255,255,255,.06);
      border: 1px solid var(--border);
      font-size: 1rem;
      color: var(--muted);
      flex-shrink: 0;
    }
    .todo-body { display: none; gap: 10px; padding-top: 4px; }
    .todo.expanded .todo-body { display: grid; }
    .title { font-size: 1.05rem; font-weight: 700; }
    .chip { padding: 6px 10px; border-radius: 999px; font-size: .8rem; border: 1px solid var(--border); background: rgba(255,255,255,.07); color: var(--muted); }
    .muted { color: var(--muted); font-size: .92rem; line-height: 1.5; }
    .todo-actions button, .subtask-actions button, .subtask-form button, .category-row button, .subtask-inline-edit button { width: auto; padding: 10px 14px; }
    .form-actions,
    .detail-actions,
    .subtask-actions,
    .subtask-form,
    .subtask-inline-edit,
    .dialog-actions {
      width: 100%;
      justify-content: space-between;
      align-items: flex-start;
    }
    .form-actions button,
    .detail-actions button,
    .subtask-actions button,
    .subtask-form button,
    .subtask-inline-edit button,
    .dialog-actions button {
      width: auto;
      min-width: 140px;
    }
    .detail-actions-main,
    .detail-actions-side,
    .subtask-actions-main,
    .subtask-actions-side,
    .subtask-form-fields,
    .subtask-form-actions,
    .subtask-inline-edit-fields,
    .subtask-inline-edit-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      align-items: center;
    }
    .subtask-form-fields,
    .subtask-inline-edit-fields {
      flex: 1 1 420px;
      min-width: 0;
    }
    .subtask-form-actions,
    .subtask-inline-edit-actions,
    .detail-actions-side {
      justify-content: flex-end;
      margin-left: auto;
    }
    .empty { padding: 18px; border-radius: 16px; border: 1px dashed var(--border); color: var(--muted); text-align: center; }
    .error { color: #ffd7e3; }
    .warning { color: var(--warning); }
    code { padding: .15rem .45rem; border-radius: 8px; background: rgba(255,255,255,.1); }
    .subtasks, .category-manager { margin-top: 6px; padding: 12px; border-radius: 16px; border: 1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.035); display: grid; gap: 10px; }
    .subtasks h3, .category-manager h3 { margin: 0; font-size: .95rem; color: var(--muted); }
    .subtask, .category-row { border: 1px solid rgba(255,255,255,.08); border-radius: 14px; padding: 14px 16px; background: rgba(255,255,255,.035); display: grid; gap: 12px; }
    .subtask { cursor: grab; user-select: none; touch-action: none; }
    .subtask.dragging {
      opacity: .6;
      border-color: rgba(159,124,255,.5);
      box-shadow: 0 12px 28px rgba(0,0,0,.28);
      cursor: grabbing;
    }
    .subtask.done .subtask-title { text-decoration: line-through; opacity: .75; }
    .subtask-title, .category-name { font-weight: 600; }
    .subtask-form, .category-form { display: flex; gap: 12px; align-items: stretch; padding: 6px 2px 2px; }
    .subtask-form input, .category-form input, .subtask-inline-edit input { flex: 1 1 auto; min-width: 0; }
    .category-form #newCategoryName { min-width: 220px; }
    .category-form #newCategoryColor { width: 64px; min-width: 64px; flex: 0 0 64px; }
    .category-form button { width: auto; flex: 0 0 auto; }
    .helper { font-size: .88rem; color: var(--muted); }
    .category-list { display: grid; gap: 8px; max-height: 320px; overflow: auto; }
    #categoryManagerModal .modal-card {
      max-height: calc(100vh - 32px);
    }
    #categoryManagerModal .modal-body {
      max-height: calc(100vh - 140px);
      overflow: auto;
    }
    #categoryManagerModal .category-list {
      max-height: none;
    }
    .panel-head { display: flex; justify-content: space-between; gap: 10px; align-items: center; margin-bottom: 10px; flex-wrap: wrap; }
    .color-swatch {
      width: 18px;
      height: 18px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.25);
      background: #9f7cff;
      display: inline-block;
    }
    dialog.release-notes { width: min(860px, calc(100vw - 28px)); }
    .release-list { display: grid; gap: 12px; }
    .release-item { padding: 12px; border-radius: 14px; border: 1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.03); display: grid; gap: 8px; }
    .release-item h4 { margin: 0; }
    .release-item ul { margin: 0; padding-left: 18px; color: var(--muted); line-height: 1.5; }
    details summary { list-style: none; }
    details summary::-webkit-details-marker { display: none; }
    .subtask-notes {
      padding: 10px 12px;
      border-radius: 12px;
      background: rgba(255,255,255,.04);
      border: 1px solid rgba(255,255,255,.08);
      color: var(--muted);
      display: grid;
      gap: 6px;
    }
    .checklist {
      display: grid;
      gap: 6px;
    }
    .checklist-item {
      display: flex;
      gap: 8px;
      align-items: flex-start;
      padding: 4px 0;
    }
    .checklist-item input[type="checkbox"] {
      width: 18px;
      height: 18px;
      margin-top: 2px;
      flex-shrink: 0;
    }
    .checklist-item.done span { text-decoration: line-through; opacity: .72; }
    .subtask-inline-edit { display: none; gap: 12px; align-items: center; padding: 8px 2px 2px; }
    .subtask.editing .subtask-display { display: none; }
    .subtask.editing .subtask-inline-edit { display: flex; }
    .hidden { display: none !important; }
    .detail-edit-form {
      display: grid;
      gap: 12px;
    }
    .detail-edit-form textarea {
      min-height: 140px;
    }
    dialog {
      width: min(720px, calc(100vw - 24px));
      padding: 18px;
    }
    dialog::backdrop { background: rgba(0,0,0,.55); }
    .dialog-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 14px; }
    @media (max-width: 1080px) { .layout { grid-template-columns: 1fr; } }
    @media (max-width: 940px) { .toolbar { grid-template-columns: 1fr 1fr; } }
    @media (max-width: 620px) {
      .toolbar, .row { grid-template-columns: 1fr; }
      .actions, .subtask-form, .category-form, .dialog-actions, .subtask-inline-edit,
      .detail-actions-main,
      .detail-actions-side,
      .subtask-actions-main,
      .subtask-actions-side,
      .subtask-form-fields,
      .subtask-form-actions,
      .subtask-inline-edit-fields,
      .subtask-inline-edit-actions,
      .form-actions { flex-direction: column; }
      .form-actions button,
      .detail-actions button,
      .subtask-actions button,
      .subtask-form button,
      .subtask-inline-edit button,
      .dialog-actions button {
        width: 100%;
      }
      .subtask-form-actions,
      .subtask-inline-edit-actions,
      .detail-actions-side {
        margin-left: 0;
      }
    }
    .detail-grid { display:grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
    .detail-box { padding: 16px; border-radius: 14px; border:1px solid rgba(255,255,255,.08); background: rgba(255,255,255,.03); display:grid; gap:10px; }
    #subtaskNotesDialog {
      z-index: 1105;
    }
    #todoDetailModal {
      z-index: 1100;
    }
    .detail-subtask-row { display:flex; justify-content:space-between; gap:10px; align-items:center; padding:8px 0; border-top:1px solid rgba(255,255,255,.06); }
    .detail-subtask-row:first-child { border-top:0; }
    .subtask-actions {
      gap: 14px;
      margin-top: 10px;
      padding-top: 4px;
      border-top: 1px solid rgba(255,255,255,.06);
    }
    .subtask-actions button,
    .subtask-form button,
    .subtask-inline-edit button,
    .todo .actions button,
    .dialog-actions button {
      min-height: 44px;
    }
    .subtask-notes-mode-switch {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      margin-bottom: 8px;
    }
    .subtask-checklist-toolbar {
      display: flex;
      justify-content: flex-start;
      margin-top: 6px;
    }
    .checklist-editor-list {
      display: grid;
      gap: 12px;
      margin-top: 8px;
    }
    .checklist-editor-row {
      display: grid;
      grid-template-columns: auto minmax(0, 1fr) auto;
      gap: 12px;
      align-items: center;
      padding: 12px 14px;
      border-radius: 14px;
      border: 1px solid rgba(255,255,255,.08);
      background: rgba(255,255,255,.03);
    }
    .checklist-editor-toggle {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin: 0;
      white-space: nowrap;
    }
    .checklist-editor-toggle input[type="checkbox"] {
      width: 18px;
      height: 18px;
      margin: 0;
    }
    .checklist-remove-btn {
      margin-left: auto;
    }
    .subtask-drop-slot {
      height: 8px;
      border-radius: 999px;
      transition: background .12s ease, box-shadow .12s ease, height .12s ease;
    }
    .subtask-drop-slot.active {
      height: 12px;
      background: rgba(159,124,255,.92);
      box-shadow: 0 0 0 4px rgba(159,124,255,.14);
    }