/* ============================================================
   pallet-nester/styles.css — page-specific layout + widgets.
   Uses shared.css tokens (--navy, --blue, --border, etc.)
   ============================================================ */

.pn-page { padding-top: 0; }

.pn-layout {
  --controls-w: 380px;
  --stats-w:    360px;
  display: grid;
  /* minmax() floor guarantees the sidebar columns never collapse
     to 0px no matter what a stray var() might resolve to — kept
     in sync with the minPx clamp in main.js's setupResizer. */
  grid-template-columns:
    minmax(260px, var(--controls-w, 380px))
    5px
    1fr
    5px
    minmax(240px, var(--stats-w, 360px));
  gap: 0;
  height: calc(100vh - 180px);
  min-height: 520px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  box-shadow: var(--sh);
  overflow: hidden;
  margin-top: 18px;
}

.pn-panel {
  min-height: 0;
  min-width: 0;
  overflow-y: auto;
  background: var(--surface);
}
.pn-panel-controls { padding: 14px 16px; border-right: 1px solid var(--border); }
.pn-panel-stats    { padding: 14px 16px; border-left: 1px solid var(--border); }
.pn-panel-viewer {
  display: flex;
  flex-direction: column;
  background: var(--bg);
  overflow: hidden;
}

.pn-resizer {
  background: var(--border);
  cursor: col-resize;
  transition: background 0.12s;
  user-select: none;
  touch-action: none;
}
.pn-resizer:hover, .pn-resizer:active { background: var(--blue2); }

/* Viewer */
.pn-viewer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  gap: 10px;
  flex-wrap: wrap;
}
.pn-pallet-tabs { display: flex; gap: 4px; flex-wrap: wrap; font-size: 12px; color: var(--ink3); }
.pn-pallet-tabs.is-empty { font-style: italic; }
.pn-tab {
  background: var(--surface);
  color: var(--ink2);
  border: 1px solid var(--border);
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--r);
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  font-family: inherit;
}
.pn-tab:hover { background: var(--bg2); }
.pn-tab.is-active {
  background: var(--blue2);
  color: #fff;
  border-color: var(--blue2);
}
.pn-tab-dot { width: 6px; height: 6px; background: var(--amber); border-radius: 50%; }

.pn-layer-slider {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--ink3);
}
.pn-layer-slider input[type="range"] {
  width: 140px; accent-color: var(--blue2);
}

.pn-viewer-canvas { flex: 1; min-height: 0; position: relative; }
.pn-viewer-canvas canvas { display: block; width: 100% !important; height: 100% !important; }

/* Section + field structure */
.pn-section {
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.pn-section:last-child { border-bottom: none; }
.pn-section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--ink3);
  margin: 0 0 10px 0;
}

.pn-field { display: flex; flex-direction: column; margin-bottom: 8px; }
.pn-field-label {
  font-size: 11px;
  color: var(--ink3);
  margin-bottom: 3px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px;
  font-weight: 600;
}
.pn-field-hint {
  font-size: 10px;
  color: var(--ink4);
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

.pn-field input[type="text"],
.pn-field input[type="number"],
.pn-field select {
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--border2);
  border-radius: var(--r);
  padding: 5px 8px;
  font-size: 13px;
  font-family: inherit;
}
.pn-field input:focus, .pn-field select:focus {
  outline: none;
  border-color: var(--blue2);
  box-shadow: 0 0 0 3px rgba(43,95,168,.15);
}

.pn-field input[type="checkbox"] {
  width: 16px; height: 16px;
  accent-color: var(--blue2);
  margin: 0;
  align-self: flex-start;
}

/* Grids */
/* Single-column stacks — user preference is one field per row so
   labels stay readable and values line up. Both classes kept for
   backwards compat with existing JS call sites. */
.pn-grid-3 { display: flex; flex-direction: column; gap: 4px; }
.pn-grid-2 { display: flex; flex-direction: column; gap: 4px; }

/* Box rows */
.pn-box-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 10px; }

.pn-box-row {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r2);
  padding: 10px;
}

.pn-box-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.pn-swatch {
  width: 14px; height: 14px;
  border-radius: 3px;
  border: 1px solid rgba(10,22,40,.12);
  flex-shrink: 0;
}
.pn-box-name {
  flex: 1;
  background: transparent;
  color: var(--ink);
  border: none;
  border-bottom: 1px dashed var(--border2);
  padding: 2px 0 !important;
  font-size: 14px;
  font-weight: 600;
}
.pn-box-name:focus { outline: none; border-bottom-color: var(--blue2); }
.pn-color-picker {
  width: 30px; height: 22px; padding: 0;
  border: 1px solid var(--border2);
  border-radius: 3px;
  background: transparent;
  cursor: pointer;
}
.pn-icon-btn {
  background: transparent;
  color: var(--ink3);
  border: none;
  font-size: 18px;
  line-height: 1;
  padding: 2px 8px;
  cursor: pointer;
}
.pn-icon-btn:hover { color: var(--red); }
.pn-add-box { align-self: stretch; }

/* Quick add — standard crate presets with an optional per-size fan-out. */
.pn-quick-add {
  background: var(--bg2);
  border: 1px dashed var(--border2);
  border-radius: 8px;
  padding: 8px 10px;
  margin: 6px 0 2px;
}
.pn-quick-add-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .8px;
  text-transform: uppercase;
  color: var(--ink3);
  margin-bottom: 6px;
}
.pn-quick-add-row {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}
.pn-quick-add-row select { flex: 0 1 auto; min-width: 0; }
.pn-quick-add-row input[type="text"] { flex: 1 1 140px; min-width: 0; }
.pn-quick-add-row input, .pn-quick-add-row select {
  font-size: 12px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
}

/* Advanced settings — collapsed by default; everyday runs never open it. */
details.pn-advanced {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg2);
  margin-top: 4px;
}
details.pn-advanced > summary {
  cursor: pointer;
  padding: 9px 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .8px;
  text-transform: uppercase;
  color: var(--ink3);
  user-select: none;
  list-style: none;
}
details.pn-advanced > summary::-webkit-details-marker { display: none; }
details.pn-advanced[open] > summary { border-bottom: 1px solid var(--border); }
.pn-advanced-body { padding: 10px 12px; display: flex; flex-direction: column; gap: 10px; }
.pn-adv-group {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--ink4);
  margin-top: 4px;
}

/* Scenario action bar */
.pn-scenario-actions {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-top: 6px;
  flex-wrap: wrap;
}
.pn-scenario-id-chip {
  font-size: 11px;
  color: var(--ink3);
  background: var(--bg2);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: var(--r);
  margin-left: 4px;
}

/* Stats */
.pn-stats-empty { color: var(--ink3); }
.pn-stats-empty h2 { font-size: 14px; margin: 0 0 6px 0; color: var(--ink2); }
.pn-stats-empty p  { font-size: 13px; margin: 0; }

.pn-stats-block {
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.pn-stats-block:last-child { border-bottom: none; }
.pn-stats-block h2 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--ink3);
  margin: 0 0 10px 0;
  font-weight: 700;
}
.pn-stats-block h3 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.9px;
  color: var(--ink3);
  margin: 12px 0 6px 0;
  font-weight: 600;
}

.pn-stats-row {
  display: flex;
  justify-content: space-between;
  padding: 3px 0;
  font-size: 13px;
}
.pn-stats-row-label { color: var(--ink3); }
.pn-stats-row-value { color: var(--ink); font-variant-numeric: tabular-nums; }

.pn-stats-warning {
  background: var(--red-lt);
  color: var(--red);
  border: 1px solid rgba(192,21,42,.25);
  border-radius: var(--r);
  padding: 6px 10px;
  margin-bottom: 8px;
  font-size: 12px;
  display: flex;
  gap: 4px;
}

.pn-stats-subblock { margin-top: 10px; }
.pn-stats-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.pn-stats-table td {
  padding: 4px 6px;
  border-bottom: 1px solid var(--border);
}
.pn-stats-table td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}
.pn-stats-unplaced h2 { color: var(--amber); }

/* Modal (load scenario picker) */
.pn-modal-overlay {
  position: fixed; inset: 0;
  background: rgba(10,22,40,.35);
  z-index: 9000;
  display: flex; align-items: center; justify-content: center;
}
.pn-modal {
  background: var(--surface);
  border-radius: var(--r2);
  box-shadow: var(--sh2);
  min-width: min(420px, calc(100vw - 32px));
  max-width: min(560px, calc(100vw - 32px));
  max-height: 72vh;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.pn-modal h3 { margin: 0; font-size: 14px; color: var(--ink); }
.pn-scenario-list { overflow-y: auto; display: flex; flex-direction: column; gap: 6px; }
.pn-scenario-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 8px;
  align-items: center;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--bg);
}
.pn-scenario-info { min-width: 0; }
.pn-scenario-name { font-weight: 600; color: var(--ink); font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pn-scenario-meta { font-size: 11px; color: var(--ink3); }
.pn-modal-actions { display: flex; justify-content: flex-end; gap: 8px; }

/* Responsive fallback */
@media (max-width: 1100px) {
  .pn-layout {
    grid-template-columns: 320px 5px 1fr 5px 300px;
  }
}
@media (max-width: 900px) {
  .pn-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 380px auto auto;
    height: auto;
  }
  .pn-resizer { display: none; }
  .pn-panel { max-height: 50vh; }
}


/* ─── Click-to-edit popup (3D box editor) ────────────────── */
.pn-edit-panel {
  position: fixed;
  top: 80px; right: 24px;
  width: 240px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 10px 32px rgba(10, 22, 40, .22);
  font-family: var(--font-aptos, system-ui);
  z-index: 9000;
  user-select: none;
}
.pn-edit-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: 10px 12px;
  background: linear-gradient(180deg, #f1f5fb, #e6edf6);
  border-bottom: 1px solid var(--border);
  border-radius: 10px 10px 0 0;
}
.pn-edit-head-text { min-width: 0; flex: 1; }
.pn-edit-name { font-weight: 700; font-size: 13px; color: var(--ink, #0a1628); }
.pn-edit-meta { font-size: 11px; color: var(--ink3, #5a6a82); margin-top: 2px; }
.pn-edit-close {
  background: transparent; border: none; cursor: pointer;
  font-size: 20px; line-height: 1; padding: 0 4px;
  color: var(--ink3, #5a6a82);
  border-radius: 4px;
}
.pn-edit-close:hover { background: rgba(0, 0, 0, .06); color: var(--ink, #0a1628); }
.pn-edit-body { padding: 12px; }
.pn-edit-row { display: flex; gap: 6px; margin-bottom: 10px; }
.pn-edit-row .btn { flex: 1; }
.pn-edit-row-end { justify-content: flex-end; margin-bottom: 0; }
.pn-edit-section-label {
  font-size: 10px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: var(--ink3, #5a6a82);
  margin: 8px 0 6px;
}
.pn-edit-move-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 4px;
  margin-bottom: 12px;
}
.pn-edit-move-grid .btn {
  font-weight: 700; font-size: 14px; line-height: 1;
  padding: 6px 0;
}
.pn-edit-step {
  text-align: center; padding: 4px;
  font-size: 12px;
}
.pn-edit-hint {
  font-size: 11px; color: var(--ink3, #5a6a82);
  margin-top: 8px; line-height: 1.35;
}