/* === Панель бібліотеки елементів === */
:root {
  --library-open-rise: 0px;
}

.element-library {
  position: fixed;
  left: var(--drawer-collapsed-width);
  right: var(--ruler-size);
  z-index: 70;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  pointer-events: none;
  bottom: var(--ruler-size);
  transform: translateY(0);
  transition: transform 0.4s cubic-bezier(.22,1,.36,1);
}
body.library-open .element-library {
  transform: translateY(calc(-1 * var(--library-open-rise)));
}
.element-library-toggle {
  align-self: center;
  margin-bottom: 0;
  width: 48px;
  height: 18px;
  padding: 0;
  border-radius: 10px 10px 0 0;
  border: none;
  background: #0f766e;
  color: #fff;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(15,23,42,0.10);
  pointer-events: auto;
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.18s, transform 0.4s cubic-bezier(.22,1,.36,1), box-shadow 0.4s cubic-bezier(.22,1,.36,1);
}
.element-library-toggle svg {
  width: 12px;
  height: 12px;
  transition: transform 0.28s cubic-bezier(.22,1,.36,1);
}
body.library-open .element-library-toggle svg {
  transform: rotate(180deg);
}
.element-library.open .element-library-toggle {
  transform: translateY(0);
  box-shadow: 0 8px 22px rgba(15,23,42,0.16);
}
.element-library-toggle:hover {
  background: #115e59;
}
.element-library-content {
  width: 100%;
  box-sizing: border-box;
  background: rgba(248,250,252,0.98);
  border-radius: 0 0 0 0;
  box-shadow: 0 -4px 24px rgba(15,23,42,0.13);
  padding: 14px 24px 10px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  max-height: 0;
  overflow: hidden;
  transform: translateY(100%);
  transform-origin: bottom center;
  opacity: 0;
  pointer-events: none;
  transition: max-height 0.4s cubic-bezier(.22,1,.36,1), transform 0.4s cubic-bezier(.22,1,.36,1), opacity 0.24s;
  margin-bottom: 0;
  margin-top: 0;
  padding-top: 0;
  padding-bottom: 0;
}
.element-library-submenu {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.element-submenu-btn {
  background: #e0f2f1;
  color: #0f766e;
  border: none;
  border-radius: 10px;
  padding: 7px 18px;
  font-size: 15px;
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.18s, color 0.18s;
}
.element-submenu-btn.active,
.element-submenu-btn:focus {
  background: #0f766e;
  color: #fff;
}
.element-library-editor-btn {
  background: #fff7ed;
  color: #9a3412;
  border: 1px solid #fdba74;
  border-radius: 10px;
  padding: 7px 14px;
  font-size: 14px;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.18s, color 0.18s, border-color 0.18s;
}
.element-library-editor-btn:hover,
.element-library-editor-btn:focus {
  background: #ffedd5;
  border-color: #fb923c;
  outline: none;
}
.element-library-list {
  min-height: 70px;
}
.element-library.open .element-library-content {
  max-height: 240px;
  padding-top: 14px;
  padding-bottom: 10px;
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.element-library-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 22px;
}
.element-lib-item-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.element-lib-item-edit {
  position: absolute;
  right: -6px;
  top: -6px;
  width: 26px;
  height: 26px;
  border-radius: 8px;
  border: none;
  background: transparent;
  box-shadow: none;
  cursor: pointer;
  font-size: 13px;
  color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
}
.element-lib-item-edit:hover { background: rgba(255,255,255,0.08); }
.element-lib-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 8px 2px 8px;
  border-radius: 12px;
  transition: background 0.18s, transform 0.4s cubic-bezier(.22,1,.36,1), opacity 0.24s;
  min-width: 96px;
  transform: translateY(18px);
  opacity: 0;
}
.element-library.open .element-lib-item {
  transform: translateY(0);
  opacity: 1;
}
.element-library.open .element-lib-item:nth-child(2) {
  transition-delay: 0.04s;
}
.element-library.open .element-lib-item:nth-child(3) {
  transition-delay: 0.08s;
}
.element-lib-item:hover,
.element-lib-item:focus {
  background: #e0f2f1;
}
.element-lib-item.active {
  background: #b2dfdb;
  box-shadow: inset 0 0 0 2px #0f766e;
}
.element-lib-item-preview {
  width: 44px;
  height: 44px;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex: 0 0 44px;
}
.element-lib-item-preview svg {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
}
.element-lib-item span {
  font-size: 13px;
  color: #334155;
  text-align: center;
  display: block;
  max-width: 120px;
  white-space: normal;
  word-break: normal;
  overflow-wrap: break-word;
}

#custom-symbol-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.28);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 84;
}

#materials-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.18);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
  z-index: 81;
}

#share-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.28);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
  z-index: 88;
}

#share-panel {
  position: fixed;
  top: 50%;
  left: 50%;
  z-index: 90;
  width: min(420px, calc(100vw - 32px));
  max-height: calc(100vh - 48px);
  box-sizing: border-box;
  padding: 20px 18px 18px;
  transform: translate(-50%, -50%) scale(0.96);
  background: rgba(248, 250, 252, 0.98);
  border: 1px solid #cbd5e1;
  border-radius: 18px;
  box-shadow: 0 28px 80px rgba(15, 23, 42, 0.28);
  backdrop-filter: blur(18px);
  opacity: 0;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: opacity 0.22s ease, transform 0.22s ease;
}

body.share-open #share-backdrop {
  opacity: 1;
  pointer-events: auto;
}

body.share-open #share-panel {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

.share-content {
  overflow-y: auto;
  max-height: calc(100vh - 140px);
  padding-right: 4px;
}

body.dragging-share #share-panel {
  box-shadow: 0 32px 100px rgba(15,23,42,0.36);
  cursor: move;
  user-select: none;
  transition: none !important;
}

#share-panel .settings-header {
  cursor: move;
  user-select: none;
}

#share-panel .settings-header .settings-close {
  cursor: pointer;
}

#share-panel .tool-group {
  margin-bottom: 14px;
}

#share-panel .tool-option {
  display: flex;
  align-items: center;
  gap: 10px;
}

#share-panel .share-option-nested {
  padding-left: 26px;
}

#share-panel .share-option-nested input:disabled {
  opacity: 0.55;
}

#share-panel .custom-symbol-actions {
  margin-top: 4px;
}

.share-select,
.share-filename-input {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  background: #ffffff;
  color: #0f172a;
  padding: 10px 12px;
  font: inherit;
}

.share-select:focus,
.share-filename-input:focus {
  outline: none;
  border-color: #0f766e;
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}

#measure-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.18);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
  z-index: 81;
}

#measure-point-overlay {
  position: fixed;
  z-index: 110;
  display: flex;
  gap: 4px;
  align-items: center;
  pointer-events: auto;
}
.measure-overlay-btn {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 3px 8px rgba(2,6,23,0.12);
  padding: 0;
  font-size: 11px;
  line-height: 1;
}
.measure-overlay-btn.ok { background:#0f766e; color:#fff }
.measure-overlay-btn.cancel { background:#ef4444; color:#fff }

#selection-delete-overlay {
  position: fixed;
  z-index: 111;
  display: none;
  pointer-events: auto;
}

.selection-delete-btn {
  box-shadow: 0 4px 10px rgba(127, 29, 29, 0.24);
}

.selection-delete-btn:hover {
  background: #b91c1c;
}

.selection-delete-btn:focus-visible {
  outline: 2px solid rgba(255,255,255,0.9);
  outline-offset: 2px;
}

:root {
  --materials-panel-width: min(475px, calc(100vw - 28px));
}

#materials-panel {
  position: fixed;
  top: var(--topbar-height);
  right: 0;
  bottom: 0;
  width: var(--materials-panel-width);
  background: rgba(248, 250, 252, 0.98);
  border-left: 1px solid #cbd5e1;
  box-shadow: -16px 0 40px rgba(15, 23, 42, 0.18);
  z-index: 82;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.28s cubic-bezier(.22,1,.36,1);
}

.materials-ruler-toggle {
  position: fixed;
  right: var(--ruler-size);
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 48px;
  padding: 0;
  border: none;
  border-radius: 10px 0 0 10px;
  background: #0f766e;
  color: #fff;
  cursor: pointer;
  z-index: 83;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: -2px 2px 8px rgba(15,23,42,0.10);
  transition: background 0.18s, right 0.28s cubic-bezier(.22,1,.36,1);
}

.materials-ruler-toggle:hover {
  background: #115e59;
}

.materials-ruler-toggle svg {
  width: 12px;
  height: 12px;
  transform: rotate(270deg);
  transition: transform 0.28s cubic-bezier(.22,1,.36,1);
}

body.materials-open #materials-backdrop {
  opacity: 1;
  pointer-events: auto;
}

body.materials-open #materials-panel {
  transform: translateX(0);
}

body.materials-open .materials-ruler-toggle {
  right: var(--materials-panel-width);
}

body.materials-open .materials-ruler-toggle svg {
  transform: rotate(90deg);
}

.materials-header {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
  padding: 20px 24px 16px;
  border-bottom: 1px solid #e2e8f0;
}

.materials-section {
  margin-top: 10px;
  border: 1px solid #dbe5eb;
  border-radius: 14px;
  background: #f8fbfc;
  overflow: hidden;
}

.materials-section-summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 16px;
  font-weight: 700;
  color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.materials-summary-title {
  flex: 1 1 auto;
  min-width: 0;
}

.materials-summary-amount {
  flex: 0 0 auto;
  margin-left: auto;
  padding-right: 8px;
  color: #0f766e;
  text-align: right;
  white-space: nowrap;
}

/* Prevent text selection on collapsible section summaries */
.materials-section-summary,
.materials-section-summary * {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* Also prevent selection of the materials panel header */
.materials-header,
.materials-header * {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.materials-section-summary::-webkit-details-marker {
  display: none;
}

.materials-section-summary::after {
  content: '▾';
  color: #0f766e;
  font-size: 14px;
  transition: transform 0.16s ease;
}

.materials-section:not([open]) .materials-section-summary::after {
  transform: rotate(-90deg);
}

.materials-section .materials-counts-list {
  margin-top: 0;
  padding: 0 16px 14px;
}

@media (max-width: 520px) {
  .materials-section-summary {
    padding: 12px 14px;
    font-size: 14px;
  }

  .materials-section .materials-counts-list {
    padding: 0 14px 12px;
  }
}

.materials-content {
  padding: 18px 18px 28px;
  overflow: auto;
}

.materials-notes {
  width: 100%;
  min-height: 220px;
  box-sizing: border-box;
  border: 1px solid #cbd5e1;
  border-radius: 14px;
  background: #fff;
  color: #0f172a;
  padding: 12px 14px;
  font: inherit;
  resize: vertical;
}

.materials-notes:focus {
  outline: none;
  border-color: #0f766e;
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}

.materials-counts-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 6px;
}
.measure-point {
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:6px 10px;
  background:#fff;
  border:1px solid #e6eef2;
  border-radius:8px;
  font-size:13px;
}
.measure-point small{ color:#64748b }

#measure-panel {
  position: fixed;
  top: var(--topbar-height);
  right: 0;
  bottom: 0;
  width: min(380px, calc(100vw - 28px));
  background: rgba(248, 250, 252, 0.98);
  border-left: 1px solid #cbd5e1;
  box-shadow: -16px 0 40px rgba(15, 23, 42, 0.18);
  z-index: 82;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.28s cubic-bezier(.22,1,.36,1);
}

body.measure-open #measure-backdrop {
  opacity: 1; pointer-events: auto;
}

body.measure-open #measure-panel { transform: translateX(0); }
.materials-count-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 10px;
  background: #ffffff;
  border: 1px solid #e6eef2;
  border-radius: 8px;
  color: #0f172a;
  font-size: 14px;
  user-select: none;
  -webkit-user-select: none;
  transition: background-color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.materials-count-item.is-hovered {
  background: #eff6ff;
  border-color: #93c5fd;
  box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.12);
}
.materials-stage-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 6px;
  padding: 4px 2px 2px;
  user-select: none;
  -webkit-user-select: none;
}
.materials-stage-title {
  color: #0f766e;
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.materials-stage-total {
  color: #0f172a;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}
.materials-count-item-detail[hidden] {
  display: none;
}
.materials-cables-toggle {
  display: inline-flex;
  align-self: flex-start;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border: 1px solid #bfd6cf;
  border-radius: 999px;
  background: #f0fdfa;
  color: #0f766e;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.materials-section-summary,
#materials-panel .tool-label {
  user-select: none;
  -webkit-user-select: none;
}
.materials-cables-toggle:hover {
  background: #ccfbf1;
  border-color: #5eead4;
}
.materials-cables-toggle:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.14);
}
.materials-count-name { color: #334155; }
.materials-count-value { color: #0f766e; }

.materials-priced-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 76px 92px;
  gap: 10px;
  align-items: start;
}

.materials-priced-row .materials-count-name {
  min-width: 0;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  line-height: 1.25;
}

.materials-estimate-meta,
.materials-estimate-total {
  display: block;
  width: 100%;
  white-space: nowrap;
  text-align: left;
}

.materials-estimate-meta {
  color: #0f172a;
  font-size: 12px;
  font-weight: 700;
}

.materials-estimate-total {
  color: #0f766e;
  font-weight: 700;
  font-size: 12px;
}

.materials-price-editable {
  cursor: pointer;
  border-radius: 6px;
  padding: 2px 4px;
  transition: background 0.15s;
}
.materials-price-editable:hover {
  background: rgba(15, 118, 110, 0.1);
}
.materials-price-input {
  width: 100%;
  max-width: 80px;
  box-sizing: border-box;
  border: 1px solid #0f766e;
  border-radius: 6px;
  padding: 2px 6px;
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  color: #0f766e;
  background: #f0fdfa;
  outline: none;
  text-align: right;
}

@media (max-width: 520px) {
  .materials-priced-row {
    grid-template-columns: minmax(0, 1fr) 68px 84px;
    gap: 8px;
  }
}

#custom-symbol-editor {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -48%);
  width: min(920px, calc(100vw - 40px));
  max-height: min(760px, calc(100vh - 40px));
  background: rgba(248, 250, 252, 0.98);
  border: 1px solid #cbd5e1;
  border-radius: 22px;
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.28);
  z-index: 85;
  opacity: 0;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

body.custom-symbol-editor-open #custom-symbol-backdrop {
  opacity: 1;
  pointer-events: auto;
}

body.custom-symbol-editor-open #custom-symbol-editor {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%);
}

.custom-symbol-header {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
  padding: 20px 24px 16px;
  border-bottom: 1px solid #e2e8f0;
}

.custom-symbol-title {
  margin: 0;
  font-size: 22px;
  color: #0f172a;
}

.custom-symbol-subtitle {
  margin: 6px 0 0;
  color: #475569;
  font-size: 14px;
}

.custom-symbol-content {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 20px;
  padding: 20px 24px 24px;
  overflow: auto;
}

.custom-symbol-list-wrap,
.custom-symbol-form-wrap {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.custom-symbol-list-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  color: #0f172a;
}

.custom-symbol-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 420px;
  overflow: auto;
  padding-right: 4px;
}

.custom-symbol-list-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  padding: 10px;
  border-radius: 14px;
  border: 1px solid #dbe4ee;
  background: #fff;
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s, box-shadow 0.18s;
}

.custom-symbol-list-item:hover,
.custom-symbol-list-item:focus {
  border-color: #94a3b8;
  outline: none;
}

.custom-symbol-list-item.active {
  border-color: #0f766e;
  background: #ecfdf5;
  box-shadow: inset 0 0 0 1px #0f766e;
}

.custom-symbol-list-preview {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: #f8fafc;
  display: flex;
  align-items: center;
  justify-content: center;
}

.custom-symbol-list-preview svg {
  width: 32px;
  height: 32px;
}

/* Position category badge in top-right of item */
.custom-symbol-list-item {
  position: relative;
}

.custom-symbol-category {
  position: absolute;
  top: 4px; /* піднято зверху */
  right: 10px;
  font-size: 11px;
  color: #64748b;
  text-transform: none;
  background: transparent;
  padding: 2px 6px;
  border-radius: 8px;
  pointer-events: none;
  z-index: 2;
}
.custom-symbol-category:empty {
  display: none;
}

.custom-symbol-list-name {
  color: #0f172a;
  font-size: 14px;
  line-height: 1.3;
  /* Allow normal word wrapping at word boundaries and avoid
     breaking words character-by-character (which caused
     Ukrainian labels to wrap into many short lines). */
  word-break: normal;
  overflow-wrap: break-word;
  white-space: normal;
}

.custom-symbol-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.custom-symbol-field span,
.custom-symbol-preview-wrap > span {
  color: #334155;
  font-size: 14px;
  font-weight: 600;
}

.custom-symbol-field input,
.custom-symbol-field textarea {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #cbd5e1;
  border-radius: 14px;
  padding: 12px 14px;
  font: inherit;
  background: #fff;
  color: #0f172a;
}

.custom-symbol-field textarea {
  min-height: 220px;
  resize: vertical;
  font-family: Consolas, "Courier New", monospace;
  font-size: 13px;
}

/* Copy button inside SVG field */
.custom-symbol-copy {
  position: absolute;
  top: 8px;
  right: 8px;
  background: transparent;
  color: #0f172a;
  border: none;
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}
.custom-symbol-copy:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(2,6,23,0.06);
  background: rgba(255,255,255,0.6);
  border-radius: 8px;
}
.custom-symbol-copy:active { transform: translateY(0); }

/* icon as background for icon-only button */
.custom-symbol-copy::before {
  content: '';
  display: block;
  width: 16px;
  height: 16px;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%230f172a" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="9" y="9" width="13" height="13" rx="2"/><path d="M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1"/></svg>');
  background-size: 16px 16px;
  background-repeat: no-repeat;
}

.custom-symbol-preview-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.custom-symbol-preview {
  min-height: 120px;
  border: 1px dashed #94a3b8;
  border-radius: 18px;
  background: linear-gradient(180deg, #ffffff, #f8fafc);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.custom-symbol-preview svg {
  width: 96px;
  height: 96px;
}

.custom-symbol-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.custom-symbol-primary,
.custom-symbol-secondary,
.custom-symbol-danger {
  border: none;
  border-radius: 12px;
  padding: 10px 16px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.custom-symbol-primary {
  background: #0f766e;
  color: #fff;
}

.custom-symbol-secondary {
  background: #e2e8f0;
  color: #0f172a;
}

.custom-symbol-danger {
  background: #fee2e2;
  color: #991b1b;
}

.custom-symbol-primary:hover,
.custom-symbol-primary:focus,
.custom-symbol-secondary:hover,
.custom-symbol-secondary:focus,
.custom-symbol-danger:hover,
.custom-symbol-danger:focus {
  filter: brightness(0.98);
  outline: none;
}

@media (max-width: 780px) {
  .custom-symbol-content {
    grid-template-columns: 1fr;
  }

  .custom-symbol-list {
    max-height: 220px;
  }
}

.edit-menu-btn-wide {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 7px 12px 7px 14px;
  background: none;
  border: none;
  color: #0f172a;
  font-size: 15px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.18s;
  font-family: inherit;
  font-weight: 400;
  margin: 0;
}
.edit-menu-btn-wide:hover,
.edit-menu-btn-wide:focus {
  background: rgba(15, 118, 110, 0.13);
  outline: none;
}
.edit-menu-label {
  flex: 1 1 auto;
  text-align: left;
}
.edit-menu-shortcut {
  flex: 0 0 auto;
  color: #64748b;
  font-size: 13px;
  margin-left: 18px;
  text-align: right;
  letter-spacing: 0.02em;
}
.top-menu-grid .edit-menu-btn {
  background: none;
  border: none;
  color: #0f172a;
  font-size: 15px;
  text-align: left;
  padding: 7px 0 7px 10px;
  border-radius: 8px 0 0 8px;
  cursor: pointer;
  transition: background 0.18s;
}
.top-menu-grid .edit-menu-btn:hover,
.top-menu-grid .edit-menu-btn:focus {
  background: rgba(15, 118, 110, 0.13);
  outline: none;
}
:root {
  --topbar-height: 44px;
  --drawer-width: 280px;
  --drawer-collapsed-width: 80px;
  --ruler-size: 0px;
  --app-height: 100vh;
  --panel-bg: rgba(248, 250, 252, 0.96);
  --panel-border: #cbd5e1;
  --accent: #0f766e;
  --text: #0f172a;
}

@supports (height: 100lvh) {
  :root {
    --app-height: 100lvh;
  }
}

html,
body {
  margin: 0;
  height: var(--app-height);
}

body {
  overflow: hidden;
  position: relative;
  font-family: "Segoe UI", sans-serif;
  background: #e2e8f0;
  display: flex;
  flex-direction: column;
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
}

#top-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  padding: 0 12px;
  box-sizing: border-box;
  background: rgba(241, 245, 249, 0.96);
  border-bottom: 1px solid #cbd5e1;
  backdrop-filter: blur(14px);
  justify-content: space-between;
}

.top-menu-bar {
  display: flex;
  align-items: stretch;
  gap: 2px;
}

/* Unified top menu styling */
.top-menu-trigger {
  padding: 6px 12px;
  height: 36px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.top-menu-dropdown {
  min-width: 240px;
  padding: 8px;
}

.top-menu-item,
.top-menu-check {
  min-height: 40px;
  padding: 6px 12px;
  font-size: 14px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.top-menu-item input,
.top-menu-check input {
  width: 18px;
  height: 18px;
  accent-color: #0f766e;
}

.top-menu-item > label,
.top-menu-check > label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.current-drawing-title {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  min-width: 0;
  max-width: min(42vw, 560px);
  padding: 6px 12px;
  color: #334155;
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  border-radius: 8px;
  cursor: text;
  user-select: none;
  z-index: 1;
}

.current-drawing-title:hover,
.current-drawing-title:focus {
  background: rgba(15, 118, 110, 0.08);
  outline: none;
}

.current-drawing-title.is-editing {
  min-width: 180px;
  max-width: min(50vw, 680px);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: clip;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: inset 0 0 0 1px #0f766e;
  user-select: text;
}

.top-zoom-controls {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 8px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.7);
  position: relative;
  z-index: 2;
}

.top-zoom-button {
  width: 28px;
  height: 28px;
  padding: 0;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: #0f172a;
  font: inherit;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, opacity 0.18s ease;
}

.top-zoom-button:hover,
.top-zoom-button:focus {
  background: rgba(15, 118, 110, 0.1);
  outline: none;
}

.top-zoom-button:disabled {
  opacity: 0.4;
  cursor: default;
}

.top-zoom-level {
  min-width: 54px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #334155;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.top-menu {
  position: relative;
}


.top-menu-trigger {
  list-style: none;
  display: flex;
  align-items: center;
  height: 32px;
  padding-inline: 10px;
  border-radius: 8px;
  color: #0f172a;
  cursor: pointer;
  user-select: none;
  min-width: unset;
  width: auto;
  font-size: 16px;
  font-weight: 500;
  background: none;
  transition: background 0.18s, color 0.18s;
}

.top-menu-trigger::-webkit-details-marker {
  display: none;
}

.top-menu-button {
  border: 0;
  appearance: none;
  background: transparent;
  gap: 6px;
}

.top-menu-chevron {
  display: inline-block;
  font-size: 13px;
  line-height: 1;
  transform: translateY(-1px);
  color: currentColor;
}

/* Unified menu arrow - used for top details and side/bottom toggles */
.unified-arrow {
  width: 12px;
  height: 12px;
  display: inline-block;
  vertical-align: middle;
}

/* Use an inline SVG background for details summary chevrons so appearance matches button SVGs */
.top-menu-trigger::after {
  content: '';
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-left: 8px;
  background-repeat: no-repeat;
  background-position: center;
  background-size: 12px 12px;
  /* chevron-down (white stroke to match menu button icons) */
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M6 9l6 6 6-6' fill='none' stroke='%23ffffff' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/></svg>");
  transform-origin: center;
  transition: transform 0.18s ease, opacity 0.18s ease;
  opacity: 0.95;
}

.top-menu[open] .top-menu-trigger::after {
  transform: rotate(180deg);
}

.top-menu[open] .top-menu-trigger,
.top-menu-trigger:hover {
  background: rgba(15, 118, 110, 0.1);
}

.top-menu-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 220px;
  padding: 8px;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  background: rgba(248, 250, 252, 0.98);
  box-shadow: 0 18px 46px rgba(15, 23, 42, 0.18);
  backdrop-filter: blur(14px);
}

.top-menu-item,
.top-menu-check {
  display: grid;
  grid-template-columns: 18px 1fr;
  align-items: center;
  column-gap: 10px;
  width: 100%;
  min-height: 36px;
  padding: 0 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #0f172a;
  font: inherit;
  text-align: left;
  cursor: pointer;
  box-sizing: border-box;
}

.top-menu-item::before {
  content: '';
  display: block;
  width: 18px;
  height: 18px;
}

.top-menu-item:hover,
.top-menu-check:hover {
  background: rgba(15, 118, 110, 0.1);
}

.top-menu-check {
  cursor: pointer;
}

.top-menu-check input {
  margin: 0;
  width: 16px;
  height: 16px;
}

.top-menu-status {
  min-height: 18px;
  margin: 8px 4px 2px;
  padding-left: 28px;
  color: #475569;
  font-size: 12px;
  line-height: 1.4;
}

.top-menu-status.is-error {
  color: #b91c1c;
}

canvas {
  display: block;
  border: 1px solid #333;
  box-sizing: border-box;
  background-color: #fff;
  background-image:
    linear-gradient(to right, #e5e7eb 1px, transparent 1px),
    linear-gradient(to bottom, #e5e7eb 1px, transparent 1px);
  background-size: 25px 25px;
  cursor: crosshair;
}

#editor {
  flex: 1;
  width: calc(100% - var(--ruler-size));
  height: calc(var(--app-height) - var(--ruler-size) - var(--topbar-height));
  margin-top: var(--topbar-height);
  margin-right: var(--ruler-size);
  margin-bottom: var(--ruler-size);
  transform-origin: center center;
  transition: transform 0.1s ease-out;
  touch-action: none;
}

#ruler-right {
  position: fixed;
  top: 0;
  right: 0;
  bottom: var(--ruler-size);
  width: var(--ruler-size);
  background: #e8ecf1;
  border-left: 1px solid #cbd5e1;
  z-index: 75;
  cursor: default;
}

#ruler-bottom {
  position: fixed;
  bottom: 0;
  left: 0;
  right: var(--ruler-size);
  height: var(--ruler-size);
  background: #e8ecf1;
  border-top: 1px solid #cbd5e1;
  z-index: 75;
  cursor: default;
}

#ruler-corner {
  position: fixed;
  right: 0;
  bottom: 0;
  width: var(--ruler-size);
  height: var(--ruler-size);
  background: #e8ecf1;
  border-left: 1px solid #cbd5e1;
  border-top: 1px solid #cbd5e1;
  z-index: 76;
  pointer-events: none;
}

#ruler-right,
#ruler-bottom,
#ruler-corner {
  display: none !important;
}

.preview-toggle {
  position: fixed;
  right: calc(var(--ruler-size) + 12px);
  bottom: calc(var(--ruler-size) + 12px);
  width: 44px;
  height: 44px;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  background: rgba(248, 250, 252, 0.92);
  color: #0f766e;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1200;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.16);
  backdrop-filter: blur(14px);
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.preview-toggle:hover {
  background: rgba(240, 253, 250, 0.98);
  border-color: #99f6e4;
  color: #0f766e;
  box-shadow: 0 14px 28px rgba(15, 23, 42, 0.2);
}

.preview-toggle:active {
  transform: translateY(1px);
}

.preview-toggle:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12), 0 10px 24px rgba(15, 23, 42, 0.16);
}

body.preview-mode #side-menu,
body.preview-mode #menu-toggle,
body.preview-mode #menu-backdrop,
body.preview-mode #ruler-right,
body.preview-mode #ruler-bottom,
body.preview-mode #ruler-corner,
body.preview-mode #materials-ruler-toggle,
body.preview-mode .element-library,
body.preview-mode #settings-panel,
body.preview-mode #settings-backdrop,
body.preview-mode #materials-panel,
body.preview-mode #materials-backdrop,
body.preview-mode #open-drawings-panel,
body.preview-mode #open-drawings-backdrop,
body.preview-mode #custom-symbol-editor,
body.preview-mode #custom-symbol-backdrop,
body.preview-mode #measure-panel,
body.preview-mode #measure-backdrop,
body.preview-mode #symbol-edit-overlay,
body.preview-mode #furniture-edit-overlay,
body.preview-mode #line-edit-overlay,
body.preview-mode #context-menu,
body.preview-mode #measure-point-overlay,
body.preview-mode #selection-delete-overlay,
body.preview-mode #area-height-overlay {
  display: none !important;
}

body.preview-mode #top-bar {
  display: none !important;
}

body.preview-mode #editor {
  position: fixed;
  inset: 0;
  margin: 0 !important;
  width: 100vw !important;
  height: var(--app-height) !important;
  border: 0;
  z-index: 1100;
}

body.preview-mode .preview-toggle {
  right: calc(var(--ruler-size) + 12px);
  bottom: calc(var(--ruler-size) + 12px);
  background: rgba(248, 250, 252, 0.96);
  color: #0f172a;
  border-color: #cbd5e1;
}

@media (max-width: 900px) {
  :root {
    --topbar-height: 52px;
    --drawer-width: min(86vw, 320px);
    --drawer-collapsed-width: 0px;
    --ruler-size: 24px;
  }

  .top-menu-bar {
    flex: 1 1 auto;
    gap: 2px;
    max-width: calc(100vw - 156px);
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
  }

  .top-menu-bar::-webkit-scrollbar,
  .element-library-submenu::-webkit-scrollbar,
  .element-library-list::-webkit-scrollbar {
    display: none;
  }

  .top-menu-trigger {
    padding-inline: 8px;
    font-size: 14px;
  }

  .top-menu-dropdown {
    position: fixed;
    top: calc(var(--topbar-height) + 6px);
    left: 8px;
    right: 8px;
    min-width: 0;
    width: auto;
    max-width: none;
  }

  .current-drawing-title {
    display: none;
  }

  .top-zoom-controls {
    gap: 4px;
    height: 36px;
    padding: 0 6px;
  }

  .top-zoom-button {
    width: 30px;
    height: 30px;
  }

  .top-zoom-level {
    min-width: 44px;
    font-size: 12px;
  }

  #menu-toggle {
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    width: 18px;
    height: 48px;
    border-radius: 0 10px 10px 0;
  }

  body.menu-open #menu-toggle {
    left: min(86vw, 320px);
  }

  #side-menu {
    width: min(86vw, 320px);
    transform: translateX(-104%);
    padding: 20px 16px 28px;
  }

  body.menu-open #side-menu {
    width: min(86vw, 320px);
    transform: translateX(0);
    padding: 20px 16px 28px;
  }

  body:not(.menu-open) #side-menu {
    box-shadow: none;
    border-right-color: transparent;
    pointer-events: auto;
  }

  /* collapsed: center icons, hide texts without layout shift */
  body:not(.menu-open) #side-menu {
    width: var(--drawer-collapsed-width);
  }

  body:not(.menu-open) #side-menu .tool-button {
    justify-content: center;
    gap: 0;
  }

  body:not(.menu-open) #side-menu .tool-button .tool-button-text {
    opacity: 0;
    max-width: 0;
    width: 0;
    transform: translateX(-6px);
    pointer-events: none;
  }

  /* expanded: reveal texts smoothly */
  body.menu-open #side-menu .tool-button .tool-button-text {
    opacity: 1;
    max-width: 200px;
    width: auto;
    transform: translateX(0);
    pointer-events: auto;
  }

  /* animate icon/text appearance without moving other content */
  #side-menu .tool-button .tool-button-text,
  #side-menu .tool-button .tool-button-icon {
    transition: opacity 0.22s ease, transform 0.26s cubic-bezier(.22,1,.36,1), max-width 0.26s ease;
    will-change: opacity, transform;
  }

  .menu-title,
  .menu-subtitle,
  .tool-label,
  .tool-hint {
    opacity: 1;
    max-height: none;
    transform: none;
    pointer-events: auto;
  }

  #side-menu .tool-button {
    min-height: 48px;
    padding: 0 14px;
    font-size: 16px;
  }

  .element-library {
    left: 0;
    right: 0;
    bottom: var(--ruler-size);
  }

  .element-library-content {
    padding-left: 12px;
    padding-right: 12px;
  }

  .element-library.open .element-library-content {
    max-height: min(42vh, 320px);
  }

  .element-library-submenu,
  .element-library-list {
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    width: 100%;
  }

  .element-library-submenu {
    gap: 8px;
    padding-bottom: 4px;
  }

  .element-library-list {
    gap: 12px;
    padding-bottom: 6px;
  }

  .element-lib-item {
    min-width: 84px;
  }

  #materials-panel,
  #measure-panel {
    width: 100vw;
    top: var(--topbar-height);
    border-left: 0;
  }

  .materials-ruler-toggle {
    display: none;
  }

  #settings-panel,
  #open-drawings-panel,
  #custom-symbol-editor {
    width: calc(100vw - 16px);
    max-height: calc(100vh - 16px);
    border-radius: 16px;
  }

  #settings-panel,
  #open-drawings-panel {
    padding: 16px 14px 14px;
  }

  .settings-header,
  .custom-symbol-header,
  .materials-header {
    gap: 12px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .settings-content,
  .materials-content {
    padding: 14px 14px 22px;
  }

  #drawings-list {
    max-height: 40vh;
  }

  #ruler-right,
  #ruler-corner {
    display: none;
  }

  #editor {
    width: 100%;
    margin-right: 0;
  }

  #ruler-bottom {
    display: none;
    right: 0;
  }

  .preview-toggle {
    width: 52px;
    height: 52px;
    right: 12px;
    bottom: calc(var(--ruler-size) + 12px);
    border-radius: 16px;
  }
}

#symbol-edit-overlay .symbol-edit-grid-fields,
#symbol-edit-overlay #symbol-edit-main-config,
#symbol-edit-overlay .symbol-edit-extra-item-config {
  display: grid !important;
  grid-template-columns: minmax(0, 1fr) 120px !important;
  gap: 6px 10px !important;
  align-items: center !important;
}

#symbol-edit-overlay .symbol-edit-collapsed,
#symbol-edit-overlay #symbol-edit-main-config.symbol-edit-collapsed {
  display: none !important;
}

@media (max-width: 640px) {
  :root {
    --mobile-overlay-scale: 0.5;
  }

  #top-bar {
    padding: 0 8px;
  }

  #symbol-edit-overlay,
  #furniture-edit-overlay,
  #line-edit-overlay,
  #area-height-overlay,
  #panel-config-overlay {
    left: 50% !important;
    right: auto !important;
    top: calc(var(--topbar-height) + 8px) !important;
    transform: translateX(-50%) scale(var(--mobile-overlay-scale)) !important;
    transform-origin: top center !important;
    width: auto !important;
    max-width: calc(100vw - 16px) !important;
    max-height: calc((100vh - var(--topbar-height) - 20px) / var(--mobile-overlay-scale)) !important;
    box-sizing: border-box;
  }

  #selection-delete-overlay,
  #measure-point-overlay {
    transform: scale(var(--mobile-overlay-scale));
    transform-origin: top left;
  }

  #settings-panel {
    transform: translate(-50%, -50%) scale(calc(0.96 * var(--mobile-overlay-scale)));
  }

  body.settings-open #settings-panel {
    transform: translate(-50%, -50%) scale(var(--mobile-overlay-scale));
  }

  #open-drawings-panel {
    transform: translate(-50%, -50%) scale(calc(0.96 * var(--mobile-overlay-scale)));
  }

  body.open-drawings-open #open-drawings-panel {
    transform: translate(-50%, -50%) scale(var(--mobile-overlay-scale));
  }

  #share-panel {
    transform: translate(-50%, -50%) scale(calc(0.96 * var(--mobile-overlay-scale)));
  }

  body.share-open #share-panel {
    transform: translate(-50%, -50%) scale(var(--mobile-overlay-scale));
  }

  #custom-symbol-editor {
    transform: translate(-50%, -48%) scale(var(--mobile-overlay-scale));
  }

  body.custom-symbol-editor-open #custom-symbol-editor {
    transform: translate(-50%, -50%) scale(var(--mobile-overlay-scale));
  }

  #symbol-edit-overlay,
  #furniture-edit-overlay,
  #area-height-overlay,
  #panel-config-overlay {
    max-height: calc((100vh - var(--topbar-height) - 20px) / var(--mobile-overlay-scale));
    overflow: auto;
    border-radius: 14px !important;
  }

  #symbol-edit-overlay .symbol-edit-grid-fields,
  #symbol-edit-overlay #symbol-edit-main-config,
  #symbol-edit-overlay .symbol-edit-extra-item-config,
  #furniture-edit-overlay > div {
    display: grid !important;
    grid-template-columns: minmax(88px, auto) minmax(0, 1fr) !important;
    gap: 8px 10px !important;
  }

  #symbol-edit-overlay input,
  #symbol-edit-overlay select,
  #furniture-edit-overlay input,
  #line-edit-overlay input,
  #area-height-overlay input {
    min-height: 38px;
    font-size: 16px;
  }

  #line-edit-overlay {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 10px;
    align-items: center;
    padding: 12px !important;
  }

  #line-edit-overlay label {
    margin-right: 0 !important;
  }

  #area-height-overlay > div,
  #area-height-overlay label {
    width: 100%;
  }

  #area-height-overlay label {
    display: flex !important;
    flex-direction: column;
    align-items: flex-start !important;
    gap: 6px !important;
  }

  .custom-symbol-actions {
    justify-content: stretch;
  }

  .custom-symbol-primary,
  .custom-symbol-secondary,
  .custom-symbol-danger {
    flex: 1 1 140px;
  }
}


@media (orientation: portrait) and (max-width: 640px) {
  :root {
    --topbar-height: 48px;
    --ruler-size: 20px;
    --drawer-collapsed-width: 54px;
  }

  #top-bar {
    padding: 0 6px;
    gap: 6px;
  }

  .top-menu-bar {
    max-width: calc(100vw - 112px);
    gap: 0;
  }

  .top-menu-trigger {
    height: 30px;
    padding-inline: 6px;
    font-size: 13px;
  }

  .top-menu-trigger::after {
    margin-left: 4px;
  }

  .top-menu-dropdown {
    left: 6px;
    right: 6px;
    max-height: calc(var(--app-height) - var(--topbar-height) - 18px);
    overflow: auto;
  }

  .top-zoom-controls {
    gap: 2px;
    height: 32px;
    padding: 0 4px;
    border-radius: 8px;
  }

  .top-zoom-button {
    width: 24px;
    height: 24px;
    font-size: 15px;
  }

  .top-zoom-level {
    min-width: 32px;
    font-size: 11px;
  }

  #menu-toggle {
    height: 42px;
    left: var(--drawer-collapsed-width);
  }

  body.menu-open #menu-toggle {
    left: min(92vw, 320px);
  }

  #side-menu,
  body.menu-open #side-menu {
    width: min(92vw, 320px);
    padding: 16px 12px 22px;
  }

  body:not(.menu-open) #side-menu {
    width: var(--drawer-collapsed-width);
    padding-left: 6px;
    padding-right: 6px;
  }

  body:not(.menu-open) #side-menu .tool-button {
    min-height: 34px;
    margin-bottom: 8px;
    padding: 0 8px;
    border-radius: 10px;
  }

  body:not(.menu-open) #side-menu .tool-button .tool-button-icon,
  body:not(.menu-open) #side-menu .tool-button .tool-button-icon svg {
    width: 16px;
    height: 16px;
    flex-basis: 16px;
  }

  .element-library.open .element-library-content {
    max-height: min(30vh, 220px);
  }

  .element-library-submenu,
  .element-library-list {
    gap: 8px;
  }

  .element-lib-item {
    min-width: 76px;
  }

  .materials-ruler-toggle {
    display: flex;
    right: var(--ruler-size);
    width: 16px;
    height: 42px;
  }

  #ruler-right,
  #ruler-corner {
    display: none;
  }

  #editor {
    width: calc(100% - var(--ruler-size));
    margin-right: var(--ruler-size);
  }

  #ruler-bottom {
    display: none;
    right: var(--ruler-size);
  }

  #settings-panel,
  #open-drawings-panel,
  #custom-symbol-editor,
  #share-panel {
    width: calc(100vw - 8px);
    max-height: calc((var(--app-height) - 8px) / var(--mobile-overlay-scale));
    border-radius: 12px;
  }

  #settings-panel,
  #open-drawings-panel,
  #share-panel {
    padding: 12px 10px 10px;
  }

  .settings-header,
  .custom-symbol-header,
  .materials-header {
    padding-left: 12px;
    padding-right: 12px;
  }

  .settings-content,
  .materials-content {
    padding: 12px 10px 16px;
  }

  #drawings-list {
    max-height: 32vh;
  }

  .pricing-table {
    font-size: 13px;
  }

  .pricing-table th,
  .pricing-table td {
    padding: 8px 8px;
  }

  .preview-toggle {
    width: 46px;
    height: 46px;
    right: 10px;
    bottom: calc(var(--ruler-size) + 10px);
  }
}

body.preview-mode .preview-toggle:hover {
  background: rgba(255, 255, 255, 0.99);
  border-color: #94a3b8;
  color: #0f172a;
}

body.preview-mode .top-zoom-controls {
  position: fixed;
  top: 4px !important;
  right: 12px !important;
  margin-left: 0;
  z-index: 1200;
  pointer-events: auto;
}

body.preview-mode .top-zoom-level {
  transform: translateY(-1px);
}

#menu-toggle {
  position: fixed;
  top: 50%;
  left: var(--drawer-collapsed-width);
  transform: translateY(-50%);
  z-index: 30;
  width: 18px;
  height: 48px;
  padding: 0;
  border: 0;
  border-radius: 0 10px 10px 0;
  background: #0f766e;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 2px 2px 8px rgba(15, 23, 42, 0.10);
  transition: background 0.18s, left 0.28s cubic-bezier(.22,1,.36,1);
}

#menu-toggle:hover {
  background: #115e59;
}

#menu-toggle svg,
.element-library-toggle svg,
#materials-ruler-toggle svg {
  width: 12px;
  height: 12px;
  display: block;
}

#menu-backdrop {
  position: fixed;
  inset: 0;
  z-index: 10;
  background: rgba(15, 23, 42, 0.24);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

#settings-backdrop {
  position: fixed;
  inset: 0;
  z-index: 40;
  background: rgba(15, 23, 42, 0.34);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
}

#side-menu {
  position: fixed;
  top: var(--topbar-height);
  left: 0;
  bottom: 0;
  z-index: 20;
  width: var(--drawer-collapsed-width);
  padding: 24px 18px 36px;
  box-sizing: border-box;
  background: var(--panel-bg);
  border-right: 1px solid var(--panel-border);
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.18);
  transform: translateX(0);
  transition: width 0.34s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.34s ease;
  backdrop-filter: blur(14px);
  overflow-y: auto;
  overflow-x: hidden;
}

body.menu-open #side-menu {
  width: var(--drawer-width);
  box-shadow: 0 28px 68px rgba(15, 23, 42, 0.22);
}

body.menu-open #menu-backdrop {
  opacity: 1;
  pointer-events: auto;
}

body.menu-open #menu-toggle {
  left: var(--drawer-width);
}

body.settings-open #settings-backdrop {
  opacity: 1;
  pointer-events: auto;
}

.menu-title {
  margin: 0 0 6px;
  color: var(--text);
  font-size: 24px;
  font-weight: 700;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.24s ease, visibility 0s linear 0.24s;
}

.menu-subtitle {
  margin: 0 0 20px;
  color: #475569;
  font-size: 14px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.22s ease, visibility 0s linear 0.22s;
}

body.menu-open .menu-title,
body.menu-open .tool-button-text {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

body.menu-open .menu-subtitle,
body.menu-open .tool-label,
body.menu-open .tool-hint {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition-delay: 0s;
}

.tool-group {
  margin-bottom: 18px;
  transition: transform 0.34s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.22s ease;
}

#settings-panel .tool-group:last-child {
  margin-bottom: 0;
}

.tool-label {
  margin: 0 0 10px;
  color: #334155;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.22s ease, visibility 0s linear 0.22s;
}

.tool-button {
  display: block;
  width: 100%;
  margin-bottom: 10px;
  padding: 12px 14px;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.85);
  color: var(--text);
  text-align: left;
  font-size: 15px;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.tool-button:hover {
  border-color: #94a3b8;
  background: #fff;
  transform: translateX(2px);
}

.tool-button.active {
  border-color: #f59e42;
  background: rgba(245, 158, 66, 0.14);
  color: #9a3412;
}

#side-menu .tool-button {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
  width: 100%;
  margin-bottom: 10px;
  min-height: 41px;
  padding: 0 13px;
  border: 0;
  border-radius: 12px;
  background: rgba(15, 118, 110, 0.92);
  color: #fff;
  text-align: left;
  font-size: 15px;
  cursor: pointer;
  box-shadow: 0 18px 38px rgba(15, 23, 42, 0.22);
  transition: background 0.2s ease, transform 0.24s ease, box-shadow 0.2s ease;
  overflow: hidden;
}

#side-menu .tool-button:hover {
  background: #0d6b64;
  transform: translateY(-1px);
  box-shadow: 0 20px 42px rgba(15, 23, 42, 0.18);
}

#side-menu .tool-button.active {
  background: rgba(245, 158, 66, 0.18);
  color: #9a3412;
  box-shadow: inset 0 0 0 1px rgba(245, 158, 66, 0.9), 0 18px 38px rgba(15, 23, 42, 0.16);
}

.tool-button-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 19px;
  height: 19px;
  flex: 0 0 19px;
}

.tool-button-icon svg {
  width: 19px;
  height: 19px;
  fill: currentColor;
}

.tool-button-text {
  display: inline-block;
  opacity: 0;
  max-width: 0;
  transform: translateX(-8px);
  white-space: nowrap;
  overflow: hidden;
  pointer-events: none;
  transition: opacity 0.22s ease, max-width 0.3s ease, transform 0.3s ease;
}

/* Вирівнюємо кнопки по центру у згорнутому меню */
body:not(.menu-open) #side-menu .tool-button {
  justify-content: center;
  gap: 0;
}
body:not(.menu-open) #side-menu .tool-button .tool-button-icon {
  margin-left: 0;
  margin-right: 0;
}
body:not(.menu-open) #side-menu .tool-button .tool-button-text {
  opacity: 0;
  max-width: 0;
  transform: translateX(-8px);
}

body.menu-open .tool-button-text {
  max-width: 140px;
}

/* Двоколонкове меню для Правка */
.top-menu-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0 18px;
  align-items: center;
  min-width: 220px;
}
.top-menu-item-left {
  padding: 7px 0 7px 10px;
  font-size: 15px;
  color: #0f172a;
  border-radius: 8px 0 0 8px;
}
.top-menu-item-right {
  padding: 7px 10px 7px 0;
  font-size: 13px;
  color: #64748b;
  text-align: right;
  border-radius: 0 8px 8px 0;
}
.top-menu-grid span:hover {
  background: rgba(15, 118, 110, 0.08);
}

.tool-hint {
  margin: 14px 0 0;
  color: #64748b;
  font-size: 13px;
  line-height: 1.5;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.22s ease, visibility 0s linear 0.22s;
}

.tool-status {
  min-height: 20px;
  margin: 8px 0 0;
  color: #475569;
  font-size: 13px;
  line-height: 1.4;
}

.tool-status.is-error {
  color: #b91c1c;
}

.tool-option {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  color: #334155;
  font-size: 14px;
}

.tool-option-inline {
  justify-content: space-between;
}

.tool-option-angle-row {
  justify-content: space-between;
  gap: 12px;
}

.tool-option-angle-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.tool-angle-input-wrap {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
}

.tool-angle-input {
  width: 72px;
  flex: 0 0 72px;
  padding: 6px 8px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font-size: 14px;
  color: #0f172a;
  background: #fff;
}

.tool-angle-unit {
  color: #475569;
  font-size: 16px;
  line-height: 1;
}

#settings-panel {
  position: fixed;
  top: 50%;
  left: 50%;
  z-index: 50;
  width: min(760px, calc(100vw - 32px));
  max-height: calc(100vh - 48px);
  box-sizing: border-box;
  padding: 20px 18px 18px;
  background: rgba(248, 250, 252, 0.98);
  border: 1px solid #cbd5e1;
  border-radius: 18px;
  box-shadow: 0 28px 80px rgba(15, 23, 42, 0.28);
  backdrop-filter: blur(18px);
  transform: translate(-50%, -50%) scale(0.96);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease;
}

#open-drawings-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.28);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 58;
}


body.settings-open #settings-panel {
  opacity: 1;
  pointer-events: auto;
  /* transform может быть сброшен при drag */
  transform: translate(-50%, -50%) scale(1);
  transition: opacity 0.22s ease, transform 0.22s ease;
}

body.dragging-settings #settings-panel {
  box-shadow: 0 32px 100px rgba(15,23,42,0.36);
  cursor: move;
  user-select: none;
  transition: none !important;
}

/* Styles for Open Drawings panel (matches settings-panel look) */
#open-drawings-panel {
  position: fixed;
  top: 50%;
  left: 50%;
  z-index: 60;
  width: min(480px, calc(100vw - 32px));
  max-height: calc(100vh - 48px);
  box-sizing: border-box;
  padding: 20px 18px 18px;
  background: rgba(248, 250, 252, 0.98);
  border: 1px solid #cbd5e1;
  border-radius: 18px;
  box-shadow: 0 28px 80px rgba(15, 23, 42, 0.28);
  backdrop-filter: blur(18px);
  transform: translate(-50%, -50%) scale(0.96);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease;
}

body.open-drawings-open #open-drawings-backdrop {
  opacity: 1;
  pointer-events: auto;
}

body.open-drawings-open #open-drawings-panel {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%) scale(1);
}

.open-drawing-item {
  border: 1px solid #dbe4ee;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.82);
  transition: border-color 0.16s ease, background 0.16s ease;
}

.open-drawing-item + .open-drawing-item {
  margin-top: 8px;
}

.open-drawing-item:hover {
  border-color: #94a3b8;
  background: rgba(255, 255, 255, 0.96);
}

.open-drawing-item label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  cursor: pointer;
  color: #0f172a;
}

.open-drawing-item span {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.open-drawing-item strong {
  font-size: 14px;
  line-height: 1.3;
  word-break: break-word;
}

.open-drawing-item small {
  color: #64748b;
  font-size: 12px;
  line-height: 1.3;
}

#drawings-list {
  max-height: 320px;
  overflow-y: auto;
}

.settings-header {
  cursor: move;
  user-select: none;
}

.settings-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.settings-title {
  margin: 0 0 4px;
  color: #0f172a;
  font-size: 22px;
  font-weight: 700;
}

.settings-subtitle {
  margin: 0;
  color: #64748b;
  font-size: 13px;
  line-height: 1.45;
}

.settings-close {
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.9);
  color: #334155;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
}

.settings-content {
  overflow-y: auto;
  max-height: calc(100vh - 140px);
  padding-right: 4px;
}

.settings-layout {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.settings-tabs {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-right: 14px;
  border-right: 1px solid #dbe3ee;
  position: sticky;
  top: 0;
}

.settings-panels {
  min-width: 0;
}

.settings-tab-button {
  appearance: none;
  border: 1px solid #cbd5e1;
  background: rgba(255, 255, 255, 0.9);
  color: #475569;
  border-radius: 14px;
  padding: 12px 14px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
  text-align: left;
}

.settings-tab-button:hover {
  border-color: #94a3b8;
  color: #0f172a;
}

.settings-tab-button.active {
  background: #0f766e;
  border-color: #0f766e;
  color: #ffffff;
  box-shadow: 0 6px 16px rgba(15, 118, 110, 0.18);
}

.settings-tab-panel[hidden] {
  display: none !important;
}

@media (max-width: 840px) {
  .settings-layout {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .settings-tabs {
    position: static;
    padding-right: 0;
    padding-bottom: 10px;
    border-right: none;
    border-bottom: 1px solid #dbe3ee;
  }
}

.pricing-table-wrap {
  margin-top: 10px;
  border: 1px solid #dbe3ee;
  border-radius: 14px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.92);
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.pricing-table th,
.pricing-table td {
  padding: 10px 12px;
  border-bottom: 1px solid #e2e8f0;
  vertical-align: middle;
}

.pricing-table th {
  background: #f8fafc;
  color: #334155;
  text-align: left;
  font-weight: 700;
}

.pricing-table tbody tr:last-child td {
  border-bottom: none;
}

.pricing-table-name {
  color: #0f172a;
}

.pricing-table-unit {
  color: #475569;
  white-space: nowrap;
}

.pricing-table-price-input {
  width: 100%;
  min-width: 110px;
  box-sizing: border-box;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 8px 10px;
  font: inherit;
  color: #0f172a;
  background: #ffffff;
}

.pricing-table-price-input:focus {
  outline: none;
  border-color: #0f766e;
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}

#context-menu {
  position: fixed;
  background: rgba(248, 250, 252, 0.98);
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.18);
  min-width: 180px;
  z-index: 100;
  backdrop-filter: blur(10px);
  display: none;
}

#context-menu.visible {
  display: block;
}

.context-menu-item {
  padding: 10px 14px;
  color: #0f172a;
  cursor: pointer;
  font-size: 14px;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  transition: background 0.15s ease;
  border-radius: 6px;
  margin: 2px 6px;
  position: relative;
}

.context-menu-item:hover {
  background: rgba(15, 118, 110, 0.12);
  color: #115e59;
}

.context-menu-item:active {
  background: rgba(15, 118, 110, 0.22);
}

.context-menu-divider {
  height: 1px;
  background: #e2e8f0;
  margin: 4px 0;
}

/* === Settings General tab layout === */
.settings-section {
  margin-bottom: 14px;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.72);
  overflow: hidden;
}
.settings-section:last-child {
  margin-bottom: 0;
}
.settings-section-header {
  padding: 10px 16px;
  background: #f8fafc;
  border-bottom: 1px solid #e2e8f0;
  color: #334155;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  user-select: none;
  -webkit-user-select: none;
}
.settings-section-body {
  padding: 14px 16px;
}
.settings-btn-row {
  display: flex;
  gap: 6px;
}
.settings-btn-row .tool-button {
  flex: 1 1 0;
  width: auto;
  margin-bottom: 0;
  text-align: center;
  padding: 10px 8px;
}
.settings-checkbox-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 16px;
}
.cable-install-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 8px;
}
.cable-install-row:last-child {
  margin-bottom: 0;
}
.cable-install-label {
  flex: 0 0 auto;
  min-width: 76px;
  color: #334155;
  font-size: 14px;
}
.cable-install-options {
  display: flex;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
}
.cable-install-options .tool-option {
  margin-bottom: 0;
}