:root {
  --bg: #eef4ff;
  --bg2: #f8fbff;
  --panel: #ffffff;
  --panel2: #f1f5fd;
  --border: #c7d2e8;
  --border-strong: #94a3b8;
  --text: #1e293b;
  --muted: #64748b;
  --accent: #4f46e5;
  --accent2: #7c3aed;
  --accent-soft: #e0e7ff;
  --grid-line: #dce3ed;
  --grid-line-strong: #cbd5e1;
  --stab-fill: #fffef5;
  --stab-border: #e8e0a8;
  --selected: #000000;
  --shadow: 0 2px 12px rgba(30, 41, 59, 0.08);
}

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

body {
  font-family: Rubik, Outfit, system-ui, sans-serif;
  background: linear-gradient(160deg, var(--bg) 0%, #e8f0fe 40%, var(--bg2) 100%);
  color: var(--text);
  height: 100vh;
  overflow: hidden;
}

.toolbar-drawer {
  flex-shrink: 0;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
  z-index: 40;
}
.toolbar-drawer.hidden { display: none; }
.toolbar-drawer .drawer-grid {
  padding: 0.55rem 0.75rem 0.7rem;
  max-height: min(46vh, 420px);
  overflow-y: auto;
}

.app {
  height: 100vh;
  display: grid;
  grid-template-columns: 280px 1fr 118px;
  gap: 0.35rem;
  padding: 0.3rem 0.45rem;
  max-width: none;
  width: 100%;
  margin: 0 auto;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
}

/* catalog */
.catalog { min-height: 0; display: flex; flex-direction: column; }
.catalog > .panel { flex: 1; display: flex; flex-direction: column; min-height: 0; padding: 0.4rem 0.45rem; gap: 0.3rem; }

.tabs { display: flex; gap: 4px; flex-wrap: wrap; align-items: center; }
.tab, .pill {
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  padding: 7px 12px;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  transition: 0.12s;
}
.tab:hover, .pill:hover { background: var(--panel2); color: var(--text); }
.tab.active, .pill.active {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: #a5b4fc;
}

.pane { flex: 1; min-height: 0; display: flex; flex-direction: column; gap: 4px; }
.pane.hidden { display: none; }

.search, select, input[type=text], input[type=password], input[type=number] {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg2);
  color: var(--text);
  font: inherit;
  font-size: 0.84rem;
  outline: none;
}
.search:focus, select:focus, input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

.list { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 1px; padding-right: 2px; }

.catalog-item {
  display: grid;
  grid-template-columns: 26px 1fr 1fr;
  gap: 4px;
  align-items: center;
  padding: 2px 5px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.74rem;
  border: 1px solid transparent;
  line-height: 1.2;
}
.catalog-item:hover { background: var(--panel2); border-color: var(--border); }
.catalog-item .id { color: var(--muted); font-weight: 600; font-size: 0.72rem; }
.catalog-item.shape-item .nick { font-weight: 500; color: var(--text); font-size: 0.78rem; }
.catalog-item.shape-item .name { color: var(--muted); font-size: 0.7rem; font-weight: 400; }
.catalog-item .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.catalog-item .nick { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.catalog-item.color-item { grid-template-columns: 26px 18px 1fr 1fr; }
.catalog-item.color-item .name { font-weight: 500; }
.catalog-item.color-item .nick { color: var(--muted); font-size: 0.7rem; }

.swatch {
  width: 14px;
  height: 14px;
  border-radius: 2px;
  border: 1px solid var(--border);
  flex-shrink: 0;
}
.thumb { width: 34px; height: 34px; display: flex; align-items: center; justify-content: center; }
.thumb img, .thumb svg { width: 30px; height: 30px; object-fit: contain; }

/* workspace */
.workspace {
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.grid-workspace {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
  border-radius: 10px;
}

.grid-title-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  padding: 0.08rem 0.35rem;
  border-bottom: 1px solid var(--border);
  min-height: 0;
}
.grid-title-bar .label { flex-shrink: 0; margin: 0; font-size: 0.72rem; }
.grid-title-input {
  flex: 1;
  min-width: 0;
  width: auto;
  padding: 2px 6px;
  font-size: 0.76rem;
  line-height: 1.2;
}

.grid-pane {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.grid-main {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: row;
  overflow: hidden;
  background: var(--panel2);
  border-top: 1px solid var(--border);
}

.grid-frame {
  position: relative;
  flex: 1;
  min-height: 0;
  min-width: 0;
  display: flex;
  align-items: stretch;
  justify-content: stretch;
  padding: 0;
  background: var(--panel2);
}

.cell-tooltip {
  position: absolute;
  z-index: 20;
  background: #ffe600;
  color: #000;
  font-size: 0.72rem;
  font-weight: 400;
  line-height: 1.3;
  padding: 2px 6px;
  pointer-events: none;
  white-space: nowrap;
  border-radius: 0;
}
.cell-tooltip.hidden { display: none; }

.shape-toolbar {
  flex-shrink: 0;
  width: 42px;
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--border);
  background: var(--panel);
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0.2rem 0.15rem;
}

.shape-toolbar-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}

.shape-quick-btn {
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg2);
  cursor: pointer;
  padding: 2px;
  transition: border-color 0.12s, background 0.12s;
}
.shape-quick-btn:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.shape-quick-btn img,
.shape-quick-btn svg {
  width: 24px;
  height: 24px;
  object-fit: contain;
  pointer-events: none;
}

/* Excel-style sheet tabs — attached to top of grid */
.sheet-bar {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  flex-shrink: 0;
  padding: 0 0.35rem;
  min-height: 26px;
  background: #dde4f0;
  border-bottom: none;
}

.sheet-tabs-scroll {
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
  display: flex;
  align-items: flex-start;
}

.sheet-tabs-scroll .tabs {
  flex-wrap: nowrap;
  gap: 2px;
  padding-top: 1px;
}

.sheet-bar .badge {
  margin-left: 0;
  flex-shrink: 0;
  margin-top: 3px;
  font-size: 0.72rem;
  padding: 3px 8px;
}

/* right rail */
.grid-rail {
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0.35rem 0.4rem;
  overflow: hidden;
  border-radius: 10px;
}
.rail-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.rail-footer {
  flex-shrink: 0;
  padding-top: 0.35rem;
  margin-top: auto;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.rail-buffer {
  min-height: 1.25rem;
  font-size: 0.68rem;
  color: var(--muted);
  text-align: center;
  padding: 2px 0 0;
  line-height: 1.25;
  visibility: hidden;
}
.rail-buffer.has-buffer {
  visibility: visible;
}
.rail-buffer strong {
  color: var(--accent);
  font-weight: 700;
}
.rail-block {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding-bottom: 0.45rem;
  margin-bottom: 0.45rem;
  border-bottom: 1px solid var(--border);
}
.rail-block:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.rail-heading {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 700;
  margin: 0;
}
.rail-pills { flex-direction: column; align-items: stretch; }
.rail-pills .pill { text-align: center; padding: 4px 6px; font-size: 0.78rem; }
.rail-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0.35rem 0;
}
.rail-actions { display: flex; flex-direction: column; gap: 4px; }
.btn-block { width: 100%; }
.rail-select { font-size: 0.78rem; padding: 5px 6px; }
.rail-check { font-size: 0.78rem; display: flex; align-items: center; gap: 5px; cursor: pointer; }
.rail-field { font-size: 0.74rem; display: flex; flex-direction: column; gap: 2px; }
.rail-field input[type=number] { padding: 4px 6px; font-size: 0.78rem; }

.sets-stages-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 0.35rem; }
.preset-column {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.25rem 0.3rem;
  background: var(--panel2);
  min-width: 0;
}
.preset-folder-title {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0.15rem 0 0.05rem;
  cursor: pointer;
  user-select: none;
}
.preset-folder-title.sub { color: var(--muted); font-weight: 600; padding-left: 0.35rem; }
.preset-folder-title.collapsed + .preset-folder-body { display: none; }
.folder-row { margin-bottom: 4px; }
.save-folder-row {
  display: flex;
  align-items: stretch;
  gap: 6px;
}
.save-folder-picker {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.save-folder-current {
  font-size: 0.74rem;
  color: var(--muted);
  padding: 2px 0;
}
.save-folder-current strong { color: var(--text); font-weight: 600; }
.save-folder-tree {
  max-height: min(28vh, 200px);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.25rem 0.3rem;
  background: var(--panel2);
}
.save-folder-option {
  display: block;
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 0.74rem;
  padding: 3px 4px;
  border-radius: 4px;
  cursor: pointer;
}
.save-folder-option:hover { background: var(--accent-soft, rgba(79, 70, 229, 0.08)); }
.save-folder-option.selected {
  background: var(--accent-soft, rgba(79, 70, 229, 0.14));
  color: var(--accent);
  font-weight: 600;
}
.save-folder-node { margin: 1px 0; }
.save-folder-head {
  display: flex;
  align-items: center;
  gap: 2px;
}
.save-folder-toggle {
  flex-shrink: 0;
  width: 1.1rem;
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.65rem;
  line-height: 1;
  padding: 0;
}
.save-folder-toggle.empty { visibility: hidden; cursor: default; }
.save-folder-children {
  padding-left: 0.75rem;
}
.save-folder-node.collapsed > .save-folder-children { display: none; }
#btn-new-folder { align-self: flex-start; margin-top: 1.4rem; }
.saved-folder-group { margin-bottom: 0.35rem; }
.saved-folder-head {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0.2rem 0;
}
.saved-folder-title {
  flex: 1;
  min-width: 0;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  cursor: pointer;
}
.saved-folder-head.collapsed + .saved-folder-items { display: none; }
.btn-folder-add {
  flex-shrink: 0;
  padding: 0 5px;
  font-size: 0.72rem;
  line-height: 1.2;
}
.saved-folder-items { padding-left: 0.85rem; }
.saved-folder-items .saved-in-folder { padding-left: 0; }
.saved-folder-empty { padding: 2px 0 4px; font-size: 0.72rem; }
.opt-folder-indent { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.preset-column-title { margin: 0 0 0.2rem; font-size: 0.78rem; }

.col-header-hit {
  fill: transparent;
  stroke: none;
  cursor: pointer;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(15, 23, 42, 0.45);
}
.modal.hidden { display: none; }
.modal-card {
  width: min(420px, 100%);
  max-height: min(70vh, 520px);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.65rem 0.75rem;
}
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}
.modal-head h3 {
  font-size: 0.95rem;
  color: var(--accent);
  margin: 0;
}
.modal-close { font-size: 1.2rem; line-height: 1; padding: 2px 8px; }
.save-load-card {
  width: min(620px, 100%);
  max-height: min(78vh, 640px);
  overflow-y: auto;
}
.folder-modal-card {
  width: min(420px, 100%);
  max-height: min(78vh, 560px);
}
.folder-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px 4px;
  font-size: 0.74rem;
  min-height: 1.4em;
}
.folder-crumb {
  border: none;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  padding: 0;
  font: inherit;
  font-weight: 600;
}
.folder-crumb:hover { text-decoration: underline; }
.folder-crumb.current { color: var(--text); cursor: default; text-decoration: none; font-weight: 700; }
.folder-crumb-sep { color: var(--muted); }
.folder-browser {
  max-height: min(36vh, 260px);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.35rem 0.4rem;
  background: var(--panel2);
}
.folder-browser-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 4px 2px;
  border-bottom: 1px solid var(--border);
}
.folder-browser-item:last-child { border-bottom: none; }
.folder-browser-name {
  flex: 1;
  min-width: 0;
  text-align: left;
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0;
}
.folder-browser-name:hover { color: var(--accent); }
.folder-browser-meta { font-size: 0.68rem; color: var(--muted); flex-shrink: 0; }
.folder-create-row {
  display: flex;
  gap: 6px;
  align-items: center;
}
.folder-create-row input { flex: 1; min-width: 0; }
.modal-section-title {
  font-size: 0.78rem;
  color: var(--accent);
  margin: 0 0 0.35rem;
  font-weight: 700;
}
.modal-sep {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0.55rem 0;
}
.list-saved { max-height: min(36vh, 320px); }
.preset-picker-list { flex: 1; min-height: 120px; max-height: min(52vh, 420px); overflow-y: auto; }

.change-password-form {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.change-password-form label {
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: 0.78rem;
  color: var(--muted);
}
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
  margin-top: 0.25rem;
}

.label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); font-weight: 700; }
.badge {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 10px;
  border-radius: 999px;
}
.pills { display: flex; gap: 5px; flex-wrap: wrap; }
.pill { border-radius: 999px; padding: 5px 13px; border: 1px solid var(--border); background: var(--bg2); }
.pill.active { border-color: var(--accent); background: var(--accent); color: #fff; }

.preset-save-row { flex-wrap: wrap; align-items: center; }
.preset-save-row select { flex: 1; min-width: 90px; font-size: 0.78rem; }
.preset-save-row select[hidden] { display: none !important; }
.preset-empty { padding: 2px 0 4px 0.5rem; }
.preset-kind-label { display: flex; flex-direction: column; gap: 3px; margin-bottom: 4px; }
.preset-kind-label select { font-size: 0.78rem; padding: 5px 6px; }

.toolbar-drawer.hidden { display: none; }
.drawer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 0.85rem; }
.drawer-grid section { display: flex; flex-direction: column; gap: 5px; }
.drawer-grid section[hidden] { display: none !important; }
.drawer-grid h3 { font-size: 0.78rem; color: var(--accent); margin-bottom: 2px; }
.drawer-grid label { font-size: 0.8rem; display: flex; align-items: center; gap: 6px; cursor: pointer; }
.hint { font-size: 0.72rem; color: var(--muted); }
.row-input { display: flex; gap: 5px; }
.save-share-row { display: flex; gap: 5px; margin: 2px 0 4px; flex-wrap: wrap; }
.save-share-row select { flex: 1; min-width: 120px; font-size: 0.78rem; }
.share-row { display: flex; gap: 4px; width: 100%; margin-top: 2px; flex-wrap: wrap; align-items: center; }
.share-row select { font-size: 0.72rem; padding: 2px 4px; }
.share-row select[hidden] { display: none !important; }
.share-row select.share-user-select:not([hidden]) { display: block; min-width: 100px; flex: 1; }
.share-row .share-mode-select { flex: 1; min-width: 90px; }
.saved-row-mine { flex-wrap: wrap; align-items: flex-start; }
.saved-row { display: flex; align-items: center; justify-content: space-between; gap: 6px; padding: 2px 0; }
.saved-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 0.75rem; }
.saved-actions { display: flex; gap: 2px; flex-shrink: 0; }
.list-compact { max-height: 120px; overflow-y: auto; font-size: 0.75rem; }
.list-presets { max-height: 220px; }
.saved-actions .btn.active { color: var(--accent); border-color: var(--accent); }
.saved-grid-item.share-open { padding-bottom: 2px; }
.share-panel { width: 100%; padding: 4px 0 6px; border-top: 1px dashed var(--border); margin-top: 2px; }
.search-saved { margin: 4px 0 6px; font-size: 0.78rem; padding: 4px 8px; width: 100%; }
.saved-section-title { font-size: 0.72rem; font-weight: 600; color: var(--accent); margin: 6px 0 3px; text-transform: uppercase; letter-spacing: 0.04em; }
.saved-section-title:first-child { margin-top: 0; }
.badge-shared, .badge-shared-out {
  display: inline-block;
  font-size: 0.62rem;
  font-weight: 600;
  padding: 1px 5px;
  border-radius: 4px;
  vertical-align: middle;
  margin-right: 4px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.badge-shared { background: #dbeafe; color: #1d4ed8; }
.badge-shared-out { background: #fef3c7; color: #b45309; }
.saved-grid-item.is-editing { background: var(--accent-soft); border-radius: 6px; padding: 2px 4px; margin: 0 -4px; }
#loaded-grid-hint { margin-bottom: 4px; color: var(--accent); }
.list-saved { max-height: 240px; }
.preset-row { display: flex; align-items: flex-start; justify-content: space-between; gap: 4px; padding: 1px 0; }
.preset-indent-1 { padding-left: 0.45rem; }
.preset-indent-2 { padding-left: 0.9rem; }
.preset-name {
  flex: 1;
  min-width: 0;
  overflow: visible;
  white-space: normal;
  line-height: 1.25;
  word-break: break-word;
}
.preset-row .btn {
  flex-shrink: 0;
  padding: 1px 5px;
  font-size: 0.7rem;
  line-height: 1.2;
}
.saved-row { display: flex; justify-content: space-between; padding: 4px 0; border-bottom: 1px solid var(--border); }

/* sheet tabs with delete — Excel-style */
.sheet-tab-wrap {
  display: inline-flex;
  align-items: center;
  background: #c8d3e6;
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 6px 6px;
  overflow: hidden;
  flex-shrink: 0;
}
.sheet-tab-wrap.active {
  border-color: var(--border);
  background: var(--panel2);
  margin-bottom: -1px;
  padding-bottom: 1px;
  z-index: 1;
  position: relative;
}
.sheet-tab-wrap .tab {
  border: none;
  border-radius: 0;
  padding: 4px 9px;
  font-size: 0.8rem;
  white-space: nowrap;
}
.sheet-tab-wrap.active .tab { color: var(--accent); background: transparent; }
.sheet-tab-wrap.pending-delete {
  border-color: #dc2626;
  background: #fef2f2;
}
.sheet-tab-wrap.pending-delete .sheet-del {
  color: #fff;
  background: #dc2626;
  border-left-color: #dc2626;
}
.sheet-tab-wrap.editing {
  border-color: var(--accent);
  background: #fff;
}
.sheet-rename-input {
  border: none;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 9px;
  min-width: 72px;
  max-width: 140px;
  outline: none;
}
.sheet-rename-input:focus {
  box-shadow: inset 0 -2px 0 var(--accent);
}
.sheet-tab-wrap .sheet-del {
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  padding: 2px 6px 2px 2px;
  font-size: 0.95rem;
  line-height: 1;
  border-left: 1px solid var(--border);
}
.sheet-tab-wrap .sheet-del:hover { color: #dc2626; background: #fee2e2; }

.sheet-bar > .sheet-tabs-scroll > .tabs > .tab:not(.sheet-tab-wrap .tab),
#sheet-tabs > .tab {
  flex-shrink: 0;
  border-radius: 0 0 6px 6px;
  border: 1px solid var(--border);
  border-top: none;
  background: #c8d3e6;
  padding: 4px 9px;
  font-size: 0.8rem;
}

#grid {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  display: block;
}
.cell-color-label {
  fill: #000000;
  text-anchor: middle;
  dominant-baseline: middle;
  pointer-events: none;
  font-family: inherit;
  font-weight: 600;
}
.corner-violation {
  stroke: #dc2626;
  stroke-width: 2.5;
  stroke-linecap: round;
}

/* ── grid cells ── */
.cell {
  fill: #ffffff;
  stroke: var(--grid-line);
  stroke-width: 1.5;
  cursor: pointer;
}
.cell:hover { stroke: var(--grid-line-strong); }
.cell-selection {
  fill: none;
  stroke: #000000;
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
  pointer-events: none;
}
.cell.stab {
  fill: var(--stab-fill);
  stroke: var(--stab-border);
  stroke-width: 1.5;
}
.cell.no-gridlines { stroke: none; }
.cell.no-gridlines:hover { stroke: none; }
.cell.no-gridlines.stab { stroke: none; }
.corner-violation,
.ss-violation {
  stroke: #dc2626;
  stroke-width: 2.5;
  stroke-linecap: round;
  fill: none;
  pointer-events: none;
}
.grid-emphasis-border {
  fill: none;
  stroke: #000000;
  stroke-width: 1;
  pointer-events: none;
}
.overlay-text.ids-only { dominant-baseline: middle; }
.hdr { fill: var(--muted); font-size: 9px; text-anchor: middle; dominant-baseline: middle; font-family: inherit; font-weight: 600; }
.grid-col-header {
  fill: var(--text);
  text-anchor: middle;
  dominant-baseline: middle;
  pointer-events: none;
  font-family: inherit;
  font-weight: 600;
}
.grid-title-text { fill: var(--text); text-anchor: middle; dominant-baseline: middle; font-family: inherit; font-weight: 700; pointer-events: none; }
.overlay-text {
  fill: #475569;
  text-anchor: middle;
  dominant-baseline: middle;
  pointer-events: none;
  font-family: inherit;
  font-weight: 400;
}
.preset-col-label {
  font-weight: 500;
}

.btn {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 8px;
  padding: 7px 12px;
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  transition: 0.12s;
}
.btn:hover { background: var(--panel2); border-color: var(--border-strong); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.btn-primary:hover { background: #4338ca; }
.btn-ghost { padding: 5px 10px; font-size: 0.78rem; background: transparent; }
.hidden { display: none !important; }
hr { border: none; border-top: 1px solid var(--border); margin: 6px 0; }

/* login */
.login {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, #dbeafe, #eef4ff, #f0f9ff);
}
.login.hidden { display: none; }
.login-card { width: min(380px, 92vw); padding: 2rem; text-align: center; display: flex; flex-direction: column; gap: 0.85rem; }
.login-icon { display: flex; justify-content: center; margin-bottom: 0.25rem; }
.login-icon img { display: block; filter: drop-shadow(0 4px 12px rgba(79, 70, 229, 0.2)); border-radius: 50%; }
.brand-logo { border-radius: 50%; }
.login-card h2 { font-size: 1.4rem; color: var(--accent); }
.login-card > p { color: var(--muted); font-size: 0.85rem; margin-bottom: 0.5rem; }
.login-card label { text-align: left; display: flex; flex-direction: column; gap: 4px; font-size: 0.84rem; font-weight: 500; }

/* toasts */
#toasts { position: fixed; bottom: 32px; right: 16px; z-index: 200; display: flex; flex-direction: column; gap: 6px; }
.toast {
  padding: 9px 14px;
  border-radius: 10px;
  font-size: 0.84rem;
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  animation: in 0.2s ease;
  max-width: 300px;
  color: var(--text);
}
.toast.ok { border-color: #86efac; background: #f0fdf4; }
.toast.err { border-color: #fca5a5; background: #fef2f2; }
@keyframes in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.list::-webkit-scrollbar, .list-compact::-webkit-scrollbar { width: 5px; }
.list::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }

.shape-toolbar::-webkit-scrollbar,
.sheet-tabs-scroll::-webkit-scrollbar { width: 4px; height: 4px; }
.shape-toolbar::-webkit-scrollbar-thumb,
.sheet-tabs-scroll::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }

@media (max-width: 960px) {
  .app { grid-template-columns: 1fr; grid-template-rows: 180px 1fr auto; }
  .grid-rail {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  .rail-block {
    flex: 1;
    min-width: 140px;
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
  }
  .rail-pills { flex-direction: row; flex-wrap: wrap; }
  .sets-stages-columns { grid-template-columns: 1fr; }
}