/* libs/ui/layout.css
   2012-era Roblox Studio look: light Windows theme, blue panel caption bars,
   Properties docked left, Explorer docked right, classic controls. */

:root {
  --menu-h: 23px;              /* menu bar height */
  --toolbar-h: 62px;           /* icon toolbar (two rows) */
  --ribbon-h: 85px;            /* total header height = menu + toolbar */
  --panel-w: 280px;

  /* Light Windows toolbar */
  --bar-1: #eef0f2;
  --bar-2: #d3d8df;
  --bar-border: #8c95a0;

  /* Blue panel caption bars (the signature Studio blue) */
  --caption-1: #c2dbf5;
  --caption-2: #7faae0;
  --caption-border: #5b87bf;
  --caption-text: #14304f;

  --panel-bg: #f4f5f7;
  --panel-border: #9aa3b0;
  --panel-text: #1a1a1a;
  --muted-text: #5f6b78;

  --row-alt: #e9edf3;
  --field-bg: #ffffff;
  --field-border: #aab2bf;

  --sel-bg: #cfe3fb;           /* classic Windows selection */
  --sel-border: #7aa7dd;
}

body { margin: 0; overflow: hidden; font-family: "Segoe UI", Tahoma, system-ui, sans-serif; }
canvas { display: block; }

/* ---------- Menu bar (File / Edit / View / ...) ---------- */
#menuBar {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: var(--menu-h);
  background: linear-gradient(to bottom, #fbfbfa, #eceae3);
  border-bottom: 1px solid #c8c8c0;
  display: flex;
  align-items: stretch;
  padding: 0 2px;
  z-index: 11;
  font-size: 12px;
}
#menuBar .menu-top {
  background: transparent;
  border: 1px solid transparent;
  color: #1a1a1a;
  padding: 0 9px;
  cursor: default;
  font-size: 12px;
}
#menuBar .menu-top:hover, #menuBar .menu-top.open {
  background: #cfe3fb;
  border-color: #7aa7dd;
}
.menu-dropdown {
  position: fixed;
  min-width: 200px;
  background: #f7f7f4;
  border: 1px solid #8c95a0;
  box-shadow: 2px 2px 6px rgba(0,0,0,0.3);
  padding: 2px;
  z-index: 9999;
  font-size: 12px;
  color: #1a1a1a;
}
.menu-dropdown .menu-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px 3px 4px;
  cursor: default;
  white-space: nowrap;
}
.menu-dropdown .menu-item:hover:not(.disabled) { background: #cfe3fb; outline: 1px solid #7aa7dd; outline-offset: -1px; }
.menu-dropdown .menu-item.disabled { color: #9aa0a8; }
.menu-dropdown .menu-check { width: 14px; text-align: center; color: #14304f; }
.menu-dropdown .menu-label { flex: 1; }
.menu-dropdown .menu-accel { margin-left: 24px; color: #7a828c; }
.menu-dropdown .menu-item.disabled .menu-accel { color: #b3b8bf; }
.menu-dropdown .menu-sep { height: 1px; background: #c8c8c0; margin: 3px 2px; }

/* ---------- Top toolbar (light Windows strip, two icon rows) ---------- */
#topToolbar {
  position: absolute;
  top: var(--menu-h); left: 0; right: 0;
  height: var(--toolbar-h);
  background: linear-gradient(to bottom, var(--bar-1), var(--bar-2));
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 2px;
  padding: 2px 6px;
  z-index: 10;
  border-bottom: 1px solid var(--bar-border);
}
#topToolbar .tb-row { display: flex; align-items: center; gap: 2px; height: 26px; }
#topToolbar .tb-sep { width: 1px; height: 20px; background: #b7b7b0; margin: 0 4px; }
#topToolbar label { color: #2a2a2a; font-size: 12px; margin-left: 4px; }

/* Icon buttons */
#topToolbar .tb-btn {
  width: 24px; height: 24px;
  display: flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 3px;
  cursor: pointer;
  padding: 0;
}
#topToolbar .tb-btn svg { width: 16px; height: 16px; display: block; }
#topToolbar .tb-btn:hover:not(.disabled) { background: #e2ecf8; border-color: #7aa7dd; }
#topToolbar .tb-btn:active:not(.disabled) { background: #cfe0f5; }
#topToolbar .tb-btn.active { background: linear-gradient(to bottom, #fde9a9, #fbcf6b); border-color: #d9a441; }
#topToolbar .tb-btn.disabled { opacity: 0.4; cursor: default; }
#topToolbar input[type="number"] {
  width: 52px;
  background: var(--field-bg);
  color: var(--panel-text);
  border: 1px solid var(--field-border);
  border-radius: 3px;
  padding: 2px 4px;
  font-size: 12px;
}

/* ---------- Shared panel chrome ---------- */
#propertiesPanel, #explorerPanel {
  position: absolute;
  top: var(--ribbon-h);
  height: calc(100vh - var(--ribbon-h));
  width: var(--panel-w);
  background: var(--panel-bg);
  color: var(--panel-text);
  z-index: 8;
  box-sizing: border-box;
  overflow-y: auto;
  overflow-x: hidden;
  font-size: 12px;
  padding: 0;
}
#propertiesPanel { left: 0; border-right: 1px solid var(--panel-border); }
#explorerPanel { right: 0; border-left: 1px solid var(--panel-border); }

/* Blue caption bars (drag handle) */
#propertiesPanel h3, #explorerPanel h3 {
  margin: 0;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--caption-text);
  background: linear-gradient(to bottom, var(--caption-1), var(--caption-2));
  border-bottom: 1px solid var(--caption-border);
  cursor: move;
  user-select: none;
  position: sticky;
  top: 0;
  z-index: 1;
}

#propertiesContent { padding: 2px 0; }

/* ---------- Explorer tree ---------- */
#explorerList { list-style: none; padding: 2px 0 0; margin: 0; }
#explorerList li {
  padding: 2px 8px;
  cursor: pointer;
  font-size: 12px;
  line-height: 16px;
}
#explorerList li:hover { background: #e2ecf8; }
#explorerList li.selected { background: var(--sel-bg); outline: 1px solid var(--sel-border); outline-offset: -1px; }
#explorerList li.drag-over { background: var(--sel-bg) !important; outline: 1px dashed var(--sel-border); }

/* ---------- Properties: selection header + categories + rows ---------- */
.prop-empty { padding: 8px 10px; color: var(--muted-text); }

.prop-selhdr {
  padding: 4px 10px;
  background: #ffffff;
  border-bottom: 1px solid #c5ccd6;
  font-size: 12px;
}

.prop-category {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  background: linear-gradient(to bottom, #eef0f3, #dde2ea);
  border-top: 1px solid #c5ccd6;
  border-bottom: 1px solid #c5ccd6;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
}
.prop-category .cat-arrow { display: inline-block; width: 11px; text-align: center; color: #5f6b78; }

.prop-row {
  display: grid;
  grid-template-columns: 44% 56%;
  align-items: center;
  margin: 0;
  padding: 2px 8px;
  border-bottom: 1px solid #e6e9ef;
}
.prop-row:nth-of-type(even) { background: var(--row-alt); }
.prop-name { color: var(--panel-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.prop-name.ro, .prop-ro { color: #9098a2; }
.prop-value { display: flex; align-items: center; min-width: 0; }
.prop-value input, .prop-value select {
  background: var(--field-bg);
  color: var(--panel-text);
  border: 1px solid var(--field-border);
  border-radius: 2px;
  padding: 1px 3px;
  font-size: 12px;
  width: 100%;
  box-sizing: border-box;
}
.prop-value input[type="color"] { width: 36px; height: 18px; padding: 0; flex: none; }
.prop-value input[type="checkbox"] { width: auto; flex: none; }
.prop-value .vec3 { display: flex; gap: 3px; width: 100%; }

/* BrickColor picker */
.bc-field { display: flex; align-items: center; gap: 6px; width: 100%; cursor: pointer; }
.bc-swatch { width: 22px; height: 14px; flex: none; border: 1px solid #6b7682; }
.bc-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bc-popup {
  position: fixed;
  background: #f4f5f7;
  border: 1px solid #6f9bd1;
  box-shadow: 2px 2px 8px rgba(0,0,0,0.35);
  padding: 4px;
  z-index: 9999;
}
.bc-grid { display: grid; grid-template-columns: repeat(8, 22px); gap: 2px; }
.bc-cell {
  width: 22px; height: 22px;
  border: 1px solid #8c95a0;
  padding: 0; cursor: pointer; position: relative;
}
.bc-cell:hover { outline: 2px solid #1c3a5e; outline-offset: -1px; z-index: 1; }
.bc-custom {
  background: #ffffff; color: #1a1a1a; font-size: 15px; font-weight: 700; line-height: 1;
  display: flex; align-items: center; justify-content: center;
}

.prop-actions { padding: 8px; }
.prop-delete {
  background: linear-gradient(to bottom, #ffffff, #e7e7e0);
  color: #1a1a1a;
  border: 1px solid #9b9b94;
  padding: 4px 12px;
  border-radius: 3px;
  cursor: pointer;
  font-size: 12px;
}
.prop-delete:hover { border-color: #6f9bd1; background: linear-gradient(to bottom, #ffffff, #eef4fb); }

/* ---------- Insert panel (embedded inside Properties) ---------- */
#insertPanel {
  position: static;
  width: 100%;
  background: transparent;
  color: var(--panel-text);
  padding: 0;
  margin-top: 6px;
  overflow: visible;
  box-shadow: none;
  border: none;
  border-top: 1px solid var(--panel-border);
}
#insertPanel h3 {
  margin: 0;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--caption-text);
  background: linear-gradient(to bottom, var(--caption-1), var(--caption-2));
  border-bottom: 1px solid var(--caption-border);
}
#insertList { list-style: none; padding: 2px 0; margin: 0; }
#insertList li {
  padding: 2px 10px;
  cursor: pointer;
  font-size: 12px;
  line-height: 16px;
}
#insertList li:hover { background: #e2ecf8; }
#insertList li:active { background: var(--sel-bg); }

/* ---------- Classic scrollbars ---------- */
#propertiesPanel::-webkit-scrollbar, #explorerPanel::-webkit-scrollbar { width: 15px; }
#propertiesPanel::-webkit-scrollbar-track, #explorerPanel::-webkit-scrollbar-track { background: #e6e6e6; border-left: 1px solid #c8c8c8; }
#propertiesPanel::-webkit-scrollbar-thumb, #explorerPanel::-webkit-scrollbar-thumb {
  background: linear-gradient(to right, #d4d4d4, #b9b9b9);
  border: 1px solid #9b9b9b;
  border-radius: 2px;
}