/* ── Palette ── */
:root {
  --bg: #f8f8fa;
  --bg-card: #ffffff;
  --bg-hover: #f0f0f4;
  --bg-input: #f4f4f7;
  --border: #e4e4e9;
  --border-light: #eeeeef;
  --text: #1a1a2e;
  --text-2: #5a5a72;
  --text-3: #8e8ea0;
  --accent: #6c5ce7;
  --accent-soft: #e8e4fd;
  --accent-glow: rgba(108, 92, 231, 0.12);
  --danger: #e74c3c;
  --danger-soft: #fde8e6;
  --green: #00b894;
  --green-soft: #e6f9f3;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-pop: 0 20px 60px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 0, 0, 0.03);
  --radius: 10px;
  --radius-lg: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e0e14;
    --bg-card: #1a1a26;
    --bg-hover: #22222e;
    --bg-input: #16161f;
    --border: #2a2a3a;
    --border-light: #222230;
    --text: #ededf0;
    --text-2: #9898aa;
    --text-3: #5e5e70;
    --accent: #a29bfe;
    --accent-soft: #262040;
    --accent-glow: rgba(162, 155, 254, 0.1);
    --danger: #ff6b6b;
    --danger-soft: #2e1515;
    --green: #55efc4;
    --green-soft: #112e24;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.25);
    --shadow-pop: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.05);
  }
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Ensure the hidden attribute always wins, even over flex/grid display. */
[hidden] {
  display: none !important;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100svh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── App Shell ── */
/* Anchor the shell to the visible viewport with position:fixed + inset:0 rather
   than height:100dvh. In an iOS standalone PWA, 100dvh can resolve taller than
   the actually-visible area, pushing the fixed .add-bar footer below the fold
   where body{overflow:hidden} makes it unreachable. inset:0 ties the shell to
   the true layout viewport, so the footer always stays on-screen. The 100svh is
   a defensive fallback for any browser without position:fixed viewport anchoring. */
.app {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  height: 100svh;
  max-width: 560px;
  margin-inline: auto;
}

/* ── Header ── */
.header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  padding-top: max(0.5rem, env(safe-area-inset-top));
}

.header-title {
  flex: 1;
  min-width: 0;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding-left: 0.125rem;
}

.action-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;

  &:hover { background: var(--bg-hover); color: var(--text); }
  &:active { scale: 0.92; }

  /* Toggle buttons (e.g. edit mode) reflect their pressed state with the
     accent colour so it's clear the mode is active. */
  &[aria-pressed="true"] {
    background: var(--accent-soft);
    color: var(--accent);
  }
}

/* Red badge on the settings cog while sync is in an error state. */
.sync-error-dot {
  position: absolute;
  top: 5px;
  right: 5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--danger);
  box-shadow: 0 0 0 2px var(--bg);
}

/* Mask-based icons: load a shared SVG from /icons and paint it with
   currentColor so it inherits text colour and adapts to the theme. */
.icon-mask {
  display: inline-block;
  background-color: currentColor;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  -webkit-mask-size: contain;
  mask-size: contain;
}

.icon-settings {
  width: 1.25rem;
  height: 1.25rem;
  -webkit-mask-image: url(/icons/settings.svg);
  mask-image: url(/icons/settings.svg);
}

/* ── List view ── */
.list-view {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0 0.75rem;
}

.list-chrome {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.25rem 0 0.625rem;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 2;
}

.progress-meter {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.625rem;
  min-width: 0;
}

.progress-track {
  flex: 1;
  height: 8px;
  border-radius: 99px;
  background: var(--bg-hover);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0;
  border-radius: 99px;
  background: var(--accent);
  transition: width 0.3s ease, background 0.3s ease;

  &.complete { background: var(--green); }
}

.progress-label {
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
}

.reset-btn {
  flex-shrink: 0;
  margin-left: auto;
}

/* ── Todo items ── */
.todo-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  padding-bottom: 0.5rem;
}

.todo-item {
  display: flex;
  align-items: anchor-center;
  gap: 0.625rem;
  padding: 0.625rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s, opacity 0.15s;
}

.todo-check {
  flex-shrink: 0;
  width: 1.375rem;
  height: 1.375rem;
  margin-top: 1px;
  border: 1.5px solid var(--border);
  border-radius: 7px;
  background: var(--bg-input);
  color: transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, border-color 0.15s, color 0.15s;

  &:hover { border-color: var(--accent); }
  &:active { scale: 0.9; }
}

.todo-item.checked .todo-check {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.todo-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.todo-text {
  font-size: 0.9375rem;
  line-height: 1.35;
  color: var(--text);
  cursor: pointer;
  word-break: break-word;
}

.todo-item.checked .todo-text {
  text-decoration: line-through;
  color: var(--text-3);
}

.todo-meta {
  align-self: flex-start;
  border: none;
  background: transparent;
  padding: 0;
  font-family: inherit;
  font-size: 0.6875rem;
  color: var(--text-3);
  cursor: pointer;
  text-align: left;

  &:hover { color: var(--accent); text-decoration: underline; }
}

.todo-edit-input {
  width: 100%;
  padding: 0.25rem 0.5rem;
  border: 1.5px solid var(--accent);
  border-radius: 7px;
  background: var(--bg-input);
  color: var(--text);
  font-family: inherit;
  font-size: 0.9375rem;

  &:focus { outline: none; box-shadow: 0 0 0 3px var(--accent-glow); }
}

.todo-actions {
  display: flex;
  gap: 0.125rem;
  flex-shrink: 0;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.875rem;
  height: 1.875rem;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-3);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;

  &:hover { background: var(--bg-hover); color: var(--text); }
  &:active { scale: 0.9; }
}

.icon-danger:hover {
  background: var(--danger-soft);
  color: var(--danger);
}

.icon-btn[disabled] {
  opacity: 0.3;
  pointer-events: none;
}

/* Drag handle + reorder affordances */
.todo-drag {
  cursor: grab;
  touch-action: none;
}

.todo-drag:active { cursor: grabbing; }

/* Edit mode: the per-row drag handle and edit/delete actions are hidden by
   default and only revealed once the list's edit mode is toggled on from the
   header — keeping the resting UI clean. Placed after .icon-btn so the hide
   rule wins over its display:inline-flex on the drag handle. */
.todo-drag,
.todo-actions {
  display: none;
}

.list-view.editing .todo-drag {
  display: inline-flex;
}

.list-view.editing .todo-actions {
  display: flex;
}

.todo-item.dragging,
.todo-heading.dragging {
  opacity: 0.5;
}

/* Suppress text selection while a drag is in progress. */
body.reordering {
  user-select: none;
  -webkit-user-select: none;
}

/* Section heading — a flat list item rendered as a divider, no checkbox */
.todo-heading {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.375rem 0.25rem;
  margin-top: 0.625rem;
  border-bottom: 1px solid var(--border);
}

.todo-heading:first-child { margin-top: 0; }

.todo-heading-text {
  flex: 1;
  min-width: 0;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-2);
  word-break: break-word;
}

.list-settings-name {
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.import-summary {
  font-size: 0.875rem;
  color: var(--text-2);
  margin: 0.75rem 0 0.5rem;
}

.empty-list {
  text-align: center;
  color: var(--text-3);
  font-size: 0.875rem;
  padding: 2rem 1rem;
}

/* ── Home view (all lists) ── */
.home-view {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0.25rem 0.75rem 0.75rem;
}

.home-lists {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.home-new-btn {
  align-self: stretch;
  margin-top: 0.25rem;
}

/* ── Empty app state ── */
.empty-app {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 0.5rem;
  padding: 2rem 1.5rem;

  & .empty-illustration { color: var(--text-3); margin-bottom: 0.5rem; }
  & h2 { font-size: 1.25rem; font-weight: 700; }
  & p { color: var(--text-2); font-size: 0.9375rem; max-width: 22rem; line-height: 1.45; margin-bottom: 0.75rem; }
}

/* ── Add bar ── */
.add-bar {
  flex-shrink: 0;
  display: flex;
  gap: 0.5rem;
  padding: 0.625rem 0.75rem;
  padding-bottom: max(0.625rem, env(safe-area-inset-bottom));
  border-top: 1px solid var(--border-light);
  background: var(--bg-card);

  & input {
    flex: 1;
    min-width: 0;
    padding: 0.625rem 0.875rem;
    border: 1.5px solid var(--border);
    border-radius: 99px;
    background: var(--bg-input);
    color: var(--text);
    font-family: inherit;
    font-size: 0.9375rem;

    &::placeholder { color: var(--text-3); }
    &:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
  }
}

.add-btn {
  flex-shrink: 0;
  width: 2.625rem;
  height: 2.625rem;
  border: none;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(108, 92, 231, 0.3);
  transition: filter 0.15s;

  &:hover { filter: brightness(1.1); }
  &:active { scale: 0.92; }
}

/* ── Dialogs ── */
dialog {
  position: fixed;
  inset: 0;
  margin: auto;
  border: none;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  color: var(--text);
  box-shadow: var(--shadow-pop);
  padding: 0;
  max-width: min(28rem, calc(100vw - 2rem));
  width: 100%;
  max-height: 90dvh;
  overflow-y: auto;
  overscroll-behavior: contain;
  font-family: inherit;
  opacity: 0;
  scale: 0.97;
  transition:
    opacity 0.2s ease,
    scale 0.2s ease,
    display 0.2s allow-discrete,
    overlay 0.2s allow-discrete;

  &[open] {
    opacity: 1;
    scale: 1;

    @starting-style {
      opacity: 0;
      scale: 0.97;
    }
  }

  &::backdrop {
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    transition: opacity 0.2s ease, display 0.2s allow-discrete, overlay 0.2s allow-discrete;
  }

  &[open]::backdrop {
    opacity: 1;

    @starting-style { opacity: 0; }
  }
}

@media (max-width: 639px) {
  dialog {
    inset: 0;
    margin: 0;
    width: 100vw;
    height: 100dvh;
    max-width: 100vw;
    max-height: 100dvh;
    border-radius: 0;
  }
}

.pop-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  background: var(--bg-card);
  z-index: 1;

  & h2 {
    font-size: 1.0625rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}

.pop-close {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  border: none;
  border-radius: 50%;
  background: var(--bg-hover);
  color: var(--text-3);
  cursor: pointer;
  margin-left: 0.5rem;
  transition: background 0.15s, color 0.15s;

  &:hover { background: var(--danger-soft); color: var(--danger); }
}

.pop-body { padding: 1.25rem; }

.pop-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-end;
  padding-top: 0.75rem;
}

/* ── Forms ── */
.field {
  display: block;
  margin-bottom: 1rem;
}

.field-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.375rem;
}

.field input[type="text"],
.field input[type="url"],
.field input[type="password"],
.field select,
.field textarea {
  width: 100%;
  padding: 0.625rem 0.75rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text);
  font-family: inherit;
  font-size: 0.9375rem;
  transition: border-color 0.15s, box-shadow 0.15s;

  &::placeholder { color: var(--text-3); }
  &:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
}

.field textarea {
  resize: vertical;
  line-height: 1.5;
}

.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%238e8ea0' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2.5rem;
}

.field-hint-block {
  font-size: 0.75rem;
  color: var(--text-3);
  line-height: 1.4;
  margin: -0.5rem 0 0.5rem;
}

.field-hint {
  font-weight: 400;
  text-transform: none;
  letter-spacing: normal;
  color: var(--text-3);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.5625rem 1.125rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid transparent;
  font-family: inherit;
  transition: all 0.15s;
  white-space: nowrap;

  &:active { scale: 0.97; }
  &:disabled { opacity: 0.6; cursor: default; }
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px rgba(108, 92, 231, 0.3);

  &:hover { filter: brightness(1.1); }
}

.btn-ghost {
  background: transparent;
  color: var(--text-2);
  border-color: var(--border);

  &:hover { background: var(--bg-hover); border-color: var(--accent); color: var(--accent); }
}

.btn-sm {
  padding: 0.375rem 0.625rem;
  font-size: 0.75rem;
}

/* ── Pick lists (lists & templates) ── */
.pick-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  margin-bottom: 0.5rem;
}

.pick-row {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.375rem 0.25rem 0.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);

  &.active { border-color: var(--accent); background: var(--accent-soft); }
}

.pick-main {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-align: left;
  border: none;
  background: transparent;
  color: var(--text);
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 0.625rem 0.5rem;
  border-radius: 8px;
  cursor: pointer;

  &:hover .pick-name { color: var(--accent); }
}

.pick-name {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pick-count {
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text-3);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 0.125rem 0.5rem;

  &.complete { color: var(--green); border-color: var(--green); }
}

.template-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  padding: 0.375rem 0.5rem;
}

.template-name {
  font-size: 0.9375rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.template-count {
  font-size: 0.75rem;
  color: var(--text-3);
}

.muted-row {
  color: var(--text-3);
  font-size: 0.875rem;
  line-height: 1.4;
  padding: 0.5rem 0.25rem;
}

/* ── History ── */
.history-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.history-row {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius);
  background: var(--bg-input);
  border-left: 3px solid var(--text-3);

  &[data-checked="true"] { border-left-color: var(--green); }
  &[data-checked="false"] { border-left-color: var(--text-3); }
}

.history-verb {
  font-size: 0.875rem;
  font-weight: 600;
}

.history-when {
  font-size: 0.75rem;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
}

/* ── Settings ── */
.settings-section {
  margin-bottom: 1.25rem;

  &:last-child { margin-bottom: 0; }
}

.settings-head-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.settings-heading {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.settings-head-row .settings-heading { margin-bottom: 0; }

.sync-status {
  font-size: 0.8125rem;
  color: var(--text-2);
  padding: 0.375rem 0;
  font-variant-numeric: tabular-nums;

  &[data-state="error"] { color: var(--danger); }
  &[data-state="syncing"] { color: var(--accent); }
  &[data-state="idle"] { color: var(--green); }
}

.sync-hint {
  font-size: 0.75rem;
  color: var(--text-3);
  line-height: 1.35;
  margin-top: 0.125rem;
}

.share-row {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-light);
}

.share-btn {
  width: 100%;
  margin-bottom: 0.375rem;
}

/* ── Print sheet ── */
/* Hidden on screen; the only thing rendered on paper. Fixed black-on-white so
   dark mode never produces a dark printout. */
.print-sheet {
  display: none;
}

@media print {
  body {
    height: auto;
    overflow: visible;
    background: #fff;
  }

  .app,
  dialog {
    display: none !important;
  }

  .print-sheet {
    display: block;
    padding: 1rem;
    color: #000;

    & h1 {
      font-size: 1.375rem;
      margin-bottom: 1rem;
    }

    & ul {
      list-style: none;
    }

    & .print-heading {
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.04em;
      margin: 1.125rem 0 0.375rem;
      padding-bottom: 0.25rem;
      border-bottom: 1px solid #000;
      break-after: avoid;
    }

    & .print-item {
      display: flex;
      align-items: baseline;
      gap: 0.5rem;
      padding: 0.3125rem 0;
      font-size: 0.9375rem;
      line-height: 1.35;
      break-inside: avoid;
    }

    & .print-box {
      flex-shrink: 0;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 0.875rem;
      height: 0.875rem;
      border: 1.5px solid #000;
      border-radius: 3px;
      transform: translateY(2px);
    }

    & .print-item.checked {
      & .print-box::after {
        content: "✓";
        font-size: 0.75rem;
        line-height: 1;
      }

      & .print-text {
        text-decoration: line-through;
        color: #555;
      }
    }
  }
}