/* ── Screen 2: Editor ──────────────────────────────────── */

#screen-editor {
  background: var(--bg-app);
  height: 100vh;
  overflow: hidden;
}

/* ── Top bar ───────────────────────────────────────────── */
.topbar {
  height: var(--topbar-h);
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 12px;
  flex-shrink: 0;
  z-index: 10;
}

.topbar-back {
  color: var(--text-muted);
  font-size: 12px;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: color var(--transition), border-color var(--transition);
}
.topbar-back:hover { color: var(--text); border-color: #bbb; }

.topbar-title {
  font-size: 12px;
  color: var(--text-muted);
  flex: 1;
}

.topbar-zoom {
  display: flex;
  align-items: center;
  gap: 4px;
}

.topbar-zoom button {
  width: 26px;
  height: 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  line-height: 1;
  transition: background var(--transition);
}
.topbar-zoom button:hover { background: var(--bg-section); }

#zoom-label {
  font-size: 12px;
  color: var(--text-muted);
  min-width: 38px;
  text-align: center;
}

#zoom-fit {
  font-size: 11px;
  padding: 0 8px;
  width: auto;
}

/* ── Editor body ───────────────────────────────────────── */
.editor-body {
  display: flex;
  height: calc(100vh - var(--topbar-h));
  overflow: hidden;
}

/* ── Left panel ────────────────────────────────────────── */
.left-panel {
  width: var(--panel-w);
  flex-shrink: 0;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  overflow-x: hidden;
}

/* Thin scrollbar */
.left-panel::-webkit-scrollbar { width: 4px; }
.left-panel::-webkit-scrollbar-track { background: transparent; }
.left-panel::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* ── Sidebar resize handle ──────────────────────────────── */
.sidebar-resize-handle {
  width: 6px;
  flex-shrink: 0;
  cursor: col-resize;
  background: transparent;
  transition: background 0.15s;
}
.sidebar-resize-handle:hover,
.sidebar-resize-handle:active {
  background: var(--accent);
}

/* ── Panel sections (accordion) ────────────────────────── */
.panel-section {
  border-bottom: 1px solid var(--border);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  background: var(--bg-panel);
  user-select: none;
  transition: background var(--transition);
}
.section-header:hover { background: var(--bg-section-hov); }

.chevron {
  font-size: 12px;
  color: var(--text-muted);
  transition: transform var(--transition);
  display: inline-block;
}
.section-header.collapsed-hd .chevron { transform: rotate(-90deg); }

.section-body {
  padding: 10px 14px 14px;
  overflow: hidden;
  background: var(--bg-panel);
}
.section-body.collapsed { display: none; }

/* ── Canvas area ───────────────────────────────────────── */
/* ── Canvas area (artboard host) ────────────────────────── */
.canvas-area {
  flex: 1;
  overflow: hidden;
  position: relative;
  background: var(--bg-app);
  cursor: grab;
}
.canvas-area:active { cursor: grabbing; }

#artboard {
  position: absolute;
  top: 50%;
  left: 50%;
  transform-origin: 0 0;
  will-change: transform;
  line-height: 0;
  /* Compositor-only transform — no layout paint on zoom/pan */
  transform: translateZ(0);
}

#canvas {
  display: block;
  box-shadow: var(--paper-shadow);
  background: #fff;
}

/* Selection outline for letter overlays.
   Lives inside #artboard (same coordinate space as canvas pixels), so JS sets
   left/top/width/height directly in canvas px. Border scales with the artboard
   transform — that matches the previous SVG-rect behavior. */
.overlay-outline {
  position: absolute;
  display: none;
  pointer-events: none;
  border: 2px solid #4f8ef7;
  border-radius: 3px;
  box-sizing: border-box;
  z-index: 2;
}
.overlay-outline.visible { display: block; }

/* ── Format size switcher ───────────────────────────────── */
.size-switcher {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-section);
  flex-shrink: 0;
}
.size-switch-label {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
}
.size-switch-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.size-switch-btn {
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-panel);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.size-switch-btn:hover { background: var(--bg-section-hov); color: var(--text); }
.size-switch-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ── Upload / image buttons ─────────────────────────────── */
.upload-btn {
  flex: 1;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--text);
  background: var(--bg-panel);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
  text-align: center;
  display: inline-block;
}
.upload-btn:hover { background: var(--bg-section-hov); border-color: #bbb; }
.upload-btn--ghost {
  background: transparent;
  color: var(--text-muted);
}
.upload-btn--ghost:hover { background: var(--bg-section-hov); color: var(--text); }

/* ── Section header right group ─────────────────────── */
.section-header-right {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ── Help button ────────────────────────────────────── */
.help-btn {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1px solid var(--border);
  font-size: 10px;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-section);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: help;
  flex-shrink: 0;
  line-height: 1;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.help-btn:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ── Help popover ────────────────────────────────────── */
.help-popover {
  position: fixed;
  z-index: 9999;
  max-width: 220px;
  padding: 8px 12px;
  background: #1a1a1a;
  color: #f5f5f5;
  font-size: 12px;
  line-height: 1.5;
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
  pointer-events: none;
}

/* ── Custom size row ─────────────────────────────────── */
.custom-size-row {
  display: none;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--bg-section);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.custom-size-row.visible { display: flex; }
.custom-size-row .field-input { width: 56px; text-align: center; }
.custom-sep, .custom-unit {
  font-size: 12px;
  color: var(--text-muted);
}
.custom-apply-btn {
  padding: 4px 10px;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  background: transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.custom-apply-btn:hover {
  background: var(--accent);
  color: #fff;
}

/* ── Topbar actions (import + export) ───────────────── */
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.topbar-btn {
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 500;
  color: var(--text);
  background: var(--bg-panel);
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--transition), border-color var(--transition);
  display: inline-flex;
  align-items: center;
  text-decoration: none; /* applies when used on <a> */
}
a.topbar-btn { color: var(--text); }
.topbar-btn:hover { background: var(--bg-section-hov); border-color: #bbb; }
.topbar-btn--accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.topbar-btn--accent:hover { background: var(--accent-hov); border-color: var(--accent-hov); }

/* ── Export dropdown ────────────────────────────────── */
.export-dropdown {
  position: relative;
}

.export-menu {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  z-index: 100;
  min-width: 100px;
  overflow: hidden;
}
.export-menu.open { display: block; }

.export-menu button {
  display: block;
  width: 100%;
  padding: 9px 16px;
  text-align: left;
  font-size: 13px;
  color: var(--text);
  background: none;
  border: none;
  cursor: pointer;
  transition: background var(--transition);
}
.export-menu button:hover { background: var(--bg-section-hov); }

/* ── Library tabs ────────────────────────────────────── */
.lib-tab-bar {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 10px;
}
.lib-tab-btn {
  flex: 1;
  padding: 7px 4px;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}
.lib-tab-btn:hover { color: var(--text); }
.lib-tab-btn.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}
.lib-tab-content {
  min-height: 40px;
}

/* ── Gradient Panel ───────────────────────────────── */
.gradient-btn {
  font-family: inherit;
  font-size: 13px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.gradient-btn:hover {
  border-color: var(--text-muted);
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.gradient-panel {
  animation: gradFadeIn 0.15s ease;
}
@keyframes gradFadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.gradient-panel button[data-hex] {
  transition: transform 0.12s ease, border-color 0.12s ease, box-shadow 0.12s ease;
}
.gradient-panel button[data-hex]:hover {
  transform: scale(1.2) !important;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  z-index: 1;
}

/* ── Shape controls ──────────────────────────────────── */
.shape-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.shape-chip {
  width: 28px;
  height: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-panel);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: background var(--transition), border-color var(--transition);
}
.shape-chip:hover { background: var(--bg-section-hov); border-color: #bbb; }

/* ── Image filter controls ────────────────────────────── */
.filter-sliders {
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px solid var(--border);
}
.filter-preset-btn {
  padding: 3px 6px;
  margin: 2px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 10px;
  color: var(--text-muted);
  background: transparent;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}
.filter-preset-btn:hover { background: var(--bg-section-hov); border-color: #bbb; }
.filter-preset-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ── Logo import ──────────────────────────────────────── */
.logo-import-row {
  display: flex;
  gap: 4px;
  align-items: center;
  margin-top: 6px;
  flex-wrap: wrap;
}
.logo-thumb {
  width: 48px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  object-fit: contain;
  background: var(--bg-section);
  flex-shrink: 0;
}
.logo-thumb {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  object-fit: contain;
  background: var(--bg-section);
}

/* ── Pattern Editor Modal ──────────────────────────────── */
.pattern-editor-overlay {
  position: fixed;
  inset: 0;
  z-index: 9998;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: pgFadeIn 0.2s ease;
}
@keyframes pgFadeIn { from { opacity: 0; } to { opacity: 1; } }

.pg-modal {
  position: relative;
  z-index: 1;
  width: 95vw;
  max-width: 1200px;
  height: 90vh;
  background: var(--bg-panel);
  border-radius: 14px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.pg-hdr {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  background: #fff;
}

.pg-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  flex: 1;
}

.pg-dims-sidebar {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 11px;
  color: var(--text-muted);
}
.pg-dims-sidebar label { display: flex; align-items: center; gap: 4px; }

.pg-num {
  width: 48px;
  padding: 3px 5px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 11px;
  text-align: center;
  font-family: inherit;
  color: var(--text);
}

.pg-zoom-sidebar {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  color: var(--text-muted);
}
.pg-zoom-sidebar button {
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 11px;
  background: #fff;
  cursor: pointer;
}
.pg-zoom-sidebar button:hover { background: var(--bg-section-hov); }

.pg-help-btn {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pg-help-btn:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

.pg-color-picker { margin-top: 2px; }

.pg-close {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  font-size: 16px;
  color: var(--text-muted);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pg-close:hover { background: var(--danger); color: #fff; border-color: var(--danger); }

.pg-body {
  flex: 1;
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 0;
  background: #f1f5f9;
}

.pg-sidebar {
  padding: 12px;
  background: #fff;
  border-right: 1px solid var(--border);
  overflow-y: auto;
}
.pg-sidebar::-webkit-scrollbar { width: 4px; }
.pg-sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* Main area */
.pg-main {
  position: relative;
  overflow: hidden;
  min-height: 0;
}
.pg-desk {
  width: 100%;
  height: 100%;
  overflow: auto;
  background: #e2e8f0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pg-artboard {
  position: relative;
  background: #fff;
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  flex-shrink: 0;
}
.pg-preview {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  overflow: hidden;
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}
.pg-preview svg {
  width: 100%;
  height: 100%;
}

/* Glyph palette */
.pg-palette {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(32px, 1fr));
  gap: 4px;
}

.pg-glyph {
  aspect-ratio: 1/1;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  background: #fff;
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
  color: var(--text);
  overflow: hidden;
}
.pg-glyph svg { width: 100%; height: 100%; pointer-events: none; }
.pg-glyph:hover { border-color: var(--accent); transform: translateY(-1px); }
.pg-glyph--sel {
  border-color: var(--accent);
  background: rgba(79,142,247,0.1);
  box-shadow: 0 0 0 1px var(--accent);
}
.pg-glyph--eraser { color: #e05252; }

/* Color chips */

.pg-grid {
  background: transparent;
  display: grid;
  align-content: start;
  transform-origin: 0 0;
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
}

/* Grid cells */
.pg-cell {
  outline: 1px solid rgba(0,0,0,0.06);
  border: none;
  position: relative;
  overflow: hidden;
  user-select: none;
  background: transparent;
  cursor: crosshair;
  min-width: 0;
}
.pg-cell:hover { background: rgba(79,142,247,0.05); }
.pg-cell svg { display: block; width: 100%; height: 100%; }

/* Footer */
.pg-footer {
  display: flex;
  gap: 6px;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  background: #fff;
  justify-content: flex-end;
}
.pg-footer .upload-btn { flex: unset; padding: 6px 14px; }
.pg-footer .topbar-btn { flex: unset; padding: 6px 16px; }

@media (max-width: 768px) {
  .pg-body { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  .pg-sidebar { display: flex; gap: 10px; overflow-x: auto; padding: 8px; max-height: 120px; }
  .pg-palette { display: flex; flex-wrap: nowrap; }
  .pg-glyph { flex-shrink: 0; width: 32px; height: 32px; }
}

/* Pattern Tutorial */
.pattern-tutorial{position:absolute;top:0;left:0;right:0;bottom:0;z-index:1000;pointer-events:none}
.pt-backdrop{position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.3);pointer-events:auto}
.pt-tooltip{position:fixed;background:#fff;border-radius:12px;box-shadow:0 8px 30px rgba(0,0,0,0.2);padding:16px 20px;max-width:320px;z-index:1001;pointer-events:auto;opacity:0;transform:translateY(8px);transition:opacity .2s,transform .2s}
.pt-header{font-weight:700;font-size:14px;color:#4f8ef7;margin-bottom:8px}
.pt-body{font-size:13px;color:#302d2e;line-height:1.5;margin-bottom:14px}
.pt-footer{display:flex;align-items:center;justify-content:space-between}
.pt-footer-right{display:flex;gap:8px}
.pt-btn{padding:6px 14px;border-radius:6px;border:1px solid #d1d5db;font-size:12px;cursor:pointer;background:#fff;color:#302d2e;transition:background .15s;pointer-events:auto}
.pt-btn:hover{background:#f3f4f6}
.pt-btn:disabled{opacity:.4;cursor:default}
.pt-btn--primary{background:#4f8ef7;color:#fff;border-color:#4f8ef7}
.pt-btn--primary:hover{opacity:.9}
.pt-highlight{position:relative;z-index:1002;box-shadow:0 0 0 3px #4f8ef7,0 0 0 5px rgba(79,142,247,0.3);border-radius:6px;transition:box-shadow .2s}