:root {
  --ink: #1a1d23;
  --ink-soft: #3a404c;
  --muted: #7a8290;
  --paper: #ffffff;
  --chrome: #fafbfc;
  --desk: #e4e8ee;
  --desk-deep: #d5dbe4;
  --fill: #eef1f5;
  --fill-hover: #e2e7ee;
  --line: #d0d6e0;
  --line-strong: #aeb6c4;
  --accent: #1f5f9a;
  --accent-soft: #e8f1fa;
  --danger: #b83228;
  --danger-soft: #fdecea;
  --guide: #e74c3c;
  --focus: #1f5f9a;
  --radius: 0.3rem;
  --radius-lg: 0.5rem;
  --shadow-page: 0 1px 2px rgba(26, 29, 35, 0.06), 0 8px 28px rgba(26, 29, 35, 0.1);
  --shadow-panel: 0 4px 24px rgba(26, 29, 35, 0.12);
  --z-chrome: 10;
  --z-props: 20;
  --z-guide: 30;
  --z-modal: 40;
  --z-toast: 50;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --toolbar-h: auto;
}

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

html,
body {
  margin: 0;
  height: 100%;
}

body {
  font-family: "Instrument Sans", "Noto Sans SC", system-ui, sans-serif;
  color: var(--ink);
  background: var(--desk);
  -webkit-font-smoothing: antialiased;
}

.app {
  display: grid;
  grid-template-rows: auto 1fr;
  height: 100dvh;
  min-height: 100dvh;
}

.toolbar {
  z-index: var(--z-chrome);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3) var(--space-4);
  padding:
    calc(0.55rem + var(--safe-top))
    calc(var(--space-4) + var(--safe-right))
    0.55rem
    calc(var(--space-4) + var(--safe-left));
  background: var(--chrome);
  border-bottom: 1px solid var(--line);
}

.toolbar-start,
.toolbar-mid,
.toolbar-end {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.brand {
  font-family: "Newsreader", "Noto Serif SC", Georgia, serif;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
  min-width: max-content;
  line-height: 1;
}

.toolbar-sep {
  width: 1px;
  height: 1.5rem;
  background: var(--line);
  flex-shrink: 0;
}

.tool-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.2rem;
}

.tool-label {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--muted);
  margin-right: 0.2rem;
  user-select: none;
}

button {
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.2;
  color: var(--ink-soft);
  background: var(--fill);
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0.4rem 0.65rem;
  min-height: 2rem;
  cursor: pointer;
}

button:hover {
  background: var(--fill-hover);
  color: var(--ink);
}

button:active {
  background: var(--line);
}

button:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}

button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

button.primary {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  padding-inline: 0.95rem;
}

button.primary:hover {
  background: #184c7c;
  color: #fff;
}

button.primary:active {
  background: #12385c;
}

button.danger {
  color: var(--danger);
  background: transparent;
  border-color: #f0c4bf;
}

button.danger:hover {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: #e8a39c;
}

button.ghost {
  background: transparent;
  border-color: var(--line);
}

button.ghost:hover {
  background: var(--fill);
}

.zoom-group {
  background: var(--fill);
  border-radius: var(--radius);
  padding: 0.1rem;
  gap: 0;
}

.zoom-group button {
  background: transparent;
  min-width: 2rem;
  border-radius: calc(var(--radius) - 0.05rem);
}

.zoom-group button:hover {
  background: var(--paper);
}

.zoom-readout {
  min-width: 3.25rem !important;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--ink) !important;
}

.props {
  position: fixed;
  z-index: var(--z-props);
  top: calc(4rem + var(--safe-top));
  right: calc(var(--space-4) + var(--safe-right));
  width: 13.5rem;
  padding: var(--space-4);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-panel);
  display: grid;
  gap: var(--space-3);
}

.props[hidden] {
  display: none;
}

.props h2 {
  margin: 0;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--muted);
}

.props label {
  display: grid;
  gap: 0.25rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
}

.props label[hidden] {
  display: none;
}

.props input,
.props select {
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--ink);
  padding: 0.35rem 0.45rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--desk);
  width: 100%;
  min-height: 2rem;
}

.props input:focus,
.props select:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--paper);
}

.props input[type="color"] {
  padding: 0.15rem;
  cursor: pointer;
}

.props .row {
  display: flex;
  gap: 0.25rem;
}

.props .row button {
  flex: 1;
  padding: 0.35rem 0.3rem;
  font-size: 0.75rem;
}

.stage {
  overflow: auto;
  padding: var(--space-5) var(--space-4) calc(var(--space-6) + var(--safe-bottom));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, rgba(255, 255, 255, 0.55), transparent 55%),
    linear-gradient(180deg, var(--desk) 0%, var(--desk-deep) 100%);
}

.page-wrap {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-2);
}

.page-wrap.active .page {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.page-wrap.active .page-label {
  color: var(--accent);
}

.page-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
  padding: 0 0.15rem;
  font-variant-numeric: tabular-nums;
}

.page-shell {
  /* sized by JS to match scaled page footprint */
  position: relative;
  flex-shrink: 0;
}

.page {
  position: absolute;
  top: 0;
  left: 0;
  width: 210mm;
  height: 297mm;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-page);
  overflow: hidden;
  cursor: default;
  transform-origin: top left;
}

.guide {
  position: absolute;
  z-index: var(--z-guide);
  pointer-events: none;
  background: var(--guide);
}

.guide.v {
  top: 0;
  bottom: 0;
  width: 1px;
}

.guide.h {
  left: 0;
  right: 0;
  height: 1px;
}

.el {
  position: absolute;
  margin: 0;
  min-width: 24px;
  min-height: 16px;
  outline: 1px solid transparent;
  user-select: none;
  word-break: break-word;
  text-wrap: pretty;
}

.el.selected {
  outline-color: var(--accent);
  outline-offset: 0;
}

.el[data-type="heading"],
.el[data-type="text"],
.el[data-type="bullet"] {
  padding: 2px 4px;
  white-space: pre-wrap;
  cursor: grab;
}

.el[data-type="heading"]:active,
.el[data-type="text"]:active,
.el[data-type="bullet"]:active,
.el[data-type="line"]:active,
.el[data-type="box"]:active,
.el[data-type="image"]:active {
  cursor: grabbing;
}

.el[data-type="heading"] {
  font-weight: 700;
  line-height: 1.2;
}

.el[data-type="text"],
.el[data-type="bullet"] {
  font-weight: 400;
  line-height: 1.45;
}

.el.editing {
  cursor: text;
  user-select: text;
  outline-color: var(--accent);
  background: var(--accent-soft);
}

.el[data-type="line"] {
  min-height: 1px;
  background: var(--ink);
  cursor: grab;
  padding: 0;
}

.el[data-type="box"] {
  background: var(--accent);
  cursor: grab;
}

.el[data-type="image"] {
  cursor: grab;
  overflow: hidden;
  background: var(--fill);
}

.el[data-type="image"] img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.handle {
  position: absolute;
  width: 9px;
  height: 9px;
  background: var(--accent);
  border: 1.5px solid #fff;
  border-radius: 1px;
  z-index: 2;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.handle.se {
  right: -5px;
  bottom: -5px;
  cursor: nwse-resize;
}

.modal[hidden] {
  display: none;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: grid;
  place-items: center;
  padding: var(--space-4);
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(26, 29, 35, 0.4);
}

.modal-card {
  position: relative;
  width: min(24rem, 100%);
  background: var(--paper);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-panel);
  border: 1px solid var(--line);
}

.modal-card h2 {
  margin: 0 0 var(--space-3);
  font-family: "Newsreader", "Noto Serif SC", Georgia, serif;
  font-size: 1.25rem;
  font-weight: 600;
}

.export-note {
  margin: 0 0 var(--space-5);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--ink-soft);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
}

.toast {
  position: fixed;
  z-index: var(--z-toast);
  left: 50%;
  bottom: calc(var(--space-5) + var(--safe-bottom));
  transform: translateX(-50%);
  max-width: min(22rem, calc(100vw - 2rem));
  padding: 0.65rem 1rem;
  background: var(--ink);
  color: #fff;
  font-size: 0.8125rem;
  font-weight: 500;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-panel);
}

.toast[hidden] {
  display: none;
}

@media (max-width: 900px) {
  .toolbar-mid {
    order: 3;
    width: 100%;
    justify-content: space-between;
  }

  .toolbar-sep {
    display: none;
  }

  .tool-label {
    display: none;
  }

  .props {
    left: calc(var(--space-3) + var(--safe-left));
    right: calc(var(--space-3) + var(--safe-right));
    width: auto;
    top: auto;
    bottom: calc(var(--space-3) + var(--safe-bottom));
  }

  .stage {
    padding-inline: var(--space-3);
  }
}

@media print {
  @page {
    size: A4;
    margin: 0;
  }

  html,
  body {
    height: auto;
    background: #fff !important;
  }

  .toolbar,
  .props,
  .handle,
  .guide,
  .page-label,
  .modal,
  .toast {
    display: none !important;
  }

  .app {
    display: block;
    height: auto;
  }

  .stage {
    overflow: visible;
    padding: 0;
    display: block;
    gap: 0;
    background: none !important;
  }

  .page-wrap {
    display: block;
  }

  .page-wrap.active .page {
    outline: none;
  }

  .page-shell {
    width: 210mm !important;
    height: 297mm !important;
  }

  .page {
    position: relative;
    border: none;
    box-shadow: none;
    margin: 0;
    transform: none !important;
    page-break-after: always;
    break-after: page;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .page-wrap:last-child .page {
    page-break-after: auto;
    break-after: auto;
  }

  .el,
  .el.selected {
    outline: none !important;
  }
}