/* ===================================================================
   PHP-CAD — تم تیره، ظاهر کلاسیک/مدرن شبیه AutoCAD
   =================================================================== */

:root{
  --bg-0:#1b1d22;        /* پس‌زمینه‌ی کلی */
  --bg-1:#22252b;        /* نوارها */
  --bg-2:#2a2d34;        /* پنل‌ها */
  --bg-3:#33373f;        /* هاور */
  --bg-canvas:#151619;   /* بوم ترسیم مثل AutoCAD مشکی خالص */
  --border:#3d414a;
  --text-0:#e7e8ea;
  --text-1:#a9adb6;
  --text-dim:#6b7078;
  --accent:#3ea6ff;
  --accent-2:#ffb74d;
  --danger:#ff5f56;
  --ok:#5cd67a;
  --grid-minor:#24272d;
  --grid-major:#31353d;
  font-family: "Segoe UI", Tahoma, "Vazirmatn", sans-serif;
}

*{ box-sizing:border-box; }
html,body{
  margin:0; padding:0; height:100%; overflow:hidden;
  background:var(--bg-0); color:var(--text-0);
  font-size:13px;
  user-select:none;
}

/* ---------- نوار عنوان ---------- */
#titlebar{
  height:34px; display:flex; align-items:center; justify-content:space-between;
  background:linear-gradient(180deg,#26292f,#1e2025);
  border-bottom:1px solid var(--border);
  padding:0 12px;
}
#titlebar .tb-left{ display:flex; align-items:center; gap:10px; }
#titlebar .logo{ font-weight:700; color:var(--accent); letter-spacing:.5px; }
#titlebar .doc-title{ color:var(--text-1); }
#titlebar .save-state{ font-size:11px; color:var(--ok); border:1px solid #2c5c37; background:#152a19; padding:2px 8px; border-radius:10px; }
#titlebar .save-state.dirty{ color:var(--accent-2); border-color:#6b4a1c; background:#2a1f10; }
#titlebar .tb-right{ color:var(--text-dim); font-variant-numeric:tabular-nums; }

/* ---------- نوار منو ---------- */
#menubar{
  height:30px; display:flex; align-items:stretch;
  background:var(--bg-1); border-bottom:1px solid var(--border);
  padding:0 4px; position:relative; z-index:50;
}
.menu{
  position:relative; display:flex; align-items:center; padding:0 12px;
  cursor:pointer; color:var(--text-1); font-size:12.5px;
}
.menu:hover, .menu.open{ background:var(--bg-3); color:var(--text-0); }
.menu-drop{
  display:none; position:absolute; top:30px; right:0; min-width:210px;
  background:var(--bg-2); border:1px solid var(--border); border-radius:4px;
  box-shadow:0 10px 24px rgba(0,0,0,.5); padding:6px 0; z-index:100;
}
.menu.open .menu-drop{ display:block; }
.menu-drop .mi{
  display:flex; justify-content:space-between; gap:14px;
  padding:7px 14px; color:var(--text-0); font-size:12.5px; cursor:pointer; white-space:nowrap;
}
.menu-drop .mi:hover{ background:var(--accent); color:#0b1c2a; }
.menu-drop .mi .kbd{ color:var(--text-dim); font-size:11px; }
.menu-drop .mi:hover .kbd{ color:#0b1c2a; opacity:.8; }
.menu-drop .sep{ height:1px; background:var(--border); margin:5px 8px; }

/* ---------- فضای کاری ---------- */
#workspace{ height:calc(100% - 34px - 30px - 26px); display:flex; flex-direction:row-reverse; }

/* ---------- نوار ابزار آیکن ---------- */
#toolbar{
  width:46px; background:var(--bg-1); border-inline-start:1px solid var(--border);
  display:flex; flex-direction:column; align-items:center; padding:8px 0; gap:4px;
  overflow-y:auto;
}
.tool-btn{
  width:34px; height:34px; border-radius:6px; border:1px solid transparent;
  background:transparent; color:var(--text-1); cursor:pointer;
  display:flex; align-items:center; justify-content:center;
}
.tool-btn svg{ width:18px; height:18px; fill:none; stroke:currentColor; stroke-width:1.6; stroke-linecap:round; stroke-linejoin:round; }
.tool-btn:hover{ background:var(--bg-3); color:var(--text-0); border-color:var(--border); }
.tool-btn.active{ background:#173049; color:var(--accent); border-color:#2b5f8c; }
.tb-sep{ width:26px; height:1px; background:var(--border); margin:4px 0; }

/* ---------- بوم ---------- */
#canvasWrap{ flex:1; position:relative; background:var(--bg-canvas); overflow:hidden; }
#cadCanvas{ position:absolute; inset:0; width:100%; height:100%; display:block; cursor:crosshair; }

#cmdLine{
  position:absolute; left:8px; right:8px; bottom:8px;
  background:rgba(20,21,25,.92); border:1px solid var(--border); border-radius:6px;
  display:flex; align-items:center; gap:8px; padding:6px 10px;
  backdrop-filter:blur(3px);
}
.cmd-prompt{ color:var(--accent-2); font-family:Consolas,monospace; font-size:12px; }
#cmdInput{
  flex:1; background:transparent; border:none; outline:none; color:var(--text-0);
  font-family:Consolas,monospace; font-size:12.5px;
}
#cmdInput::placeholder{ color:var(--text-dim); }

/* ---------- ساید‌بار ---------- */
#sidebar{
  width:260px; background:var(--bg-1); border-inline-end:1px solid var(--border);
  display:flex; flex-direction:column;
}
.sb-tabs{ display:flex; border-bottom:1px solid var(--border); }
.sb-tab{
  flex:1; padding:9px 4px; background:transparent; border:none; color:var(--text-1);
  cursor:pointer; font-size:12px; border-bottom:2px solid transparent;
}
.sb-tab:hover{ color:var(--text-0); }
.sb-tab.active{ color:var(--accent); border-bottom-color:var(--accent); background:var(--bg-2); }

.sb-panel{ display:none; flex-direction:column; flex:1; overflow:hidden; }
.sb-panel.active{ display:flex; }
.sb-panel-head{
  display:flex; align-items:center; justify-content:space-between;
  padding:8px 10px; color:var(--text-1); font-size:12px; border-bottom:1px solid var(--border);
}
.mini-btn{
  background:var(--bg-3); border:1px solid var(--border); color:var(--text-0);
  border-radius:4px; padding:3px 8px; font-size:11px; cursor:pointer;
}
.mini-btn:hover{ background:var(--accent); color:#0b1c2a; border-color:var(--accent); }

.layer-list, .file-list{ overflow-y:auto; flex:1; padding:4px; }
.layer-row, .file-row{
  display:flex; align-items:center; gap:8px; padding:6px 8px; border-radius:5px; cursor:pointer;
  font-size:12px; color:var(--text-1);
}
.layer-row:hover, .file-row:hover{ background:var(--bg-3); }
.layer-row.current{ background:#173049; color:var(--text-0); }
.layer-swatch{ width:13px; height:13px; border-radius:3px; border:1px solid #000; flex:0 0 auto; cursor:pointer; }
.layer-name{ flex:1; background:transparent; border:none; color:inherit; font-size:12px; outline:none; }
.layer-icon-btn{ width:20px; height:20px; display:flex; align-items:center; justify-content:center; color:var(--text-dim); cursor:pointer; border-radius:4px; }
.layer-icon-btn:hover{ background:var(--bg-2); color:var(--text-0); }
.layer-icon-btn.off{ color:#5a2c2c; }

.file-row.active{ background:#173049; color:var(--accent); }
.file-row .fr-name{ flex:1; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.file-row .fr-del{ color:var(--danger); opacity:0; }
.file-row:hover .fr-del{ opacity:1; }

.props-body{ padding:10px; overflow-y:auto; }
.props-empty{ color:var(--text-dim); text-align:center; margin-top:30px; font-size:12px; }
.prop-row{ display:flex; align-items:center; justify-content:space-between; gap:8px; margin-bottom:8px; }
.prop-row label{ color:var(--text-1); font-size:12px; }
.prop-row input, .prop-row select{
  width:130px; background:var(--bg-2); border:1px solid var(--border); color:var(--text-0);
  border-radius:4px; padding:4px 6px; font-size:12px; outline:none;
}
.prop-row input:focus, .prop-row select:focus{ border-color:var(--accent); }

/* ---------- نوار وضعیت ---------- */
#statusbar{
  height:26px; background:var(--bg-1); border-top:1px solid var(--border);
  display:flex; align-items:center; gap:10px; padding:0 10px; color:var(--text-1); font-size:11.5px;
}
.sb-toggle{
  background:transparent; border:1px solid transparent; color:var(--text-dim);
  padding:2px 8px; border-radius:4px; cursor:pointer; font-size:11.5px;
}
.sb-toggle.on{ color:var(--accent); border-color:#2b5f8c; background:#132535; }
.sep-v{ width:1px; height:14px; background:var(--border); }

/* ---------- اسکرول‌بار ---------- */
::-webkit-scrollbar{ width:9px; height:9px; }
::-webkit-scrollbar-thumb{ background:#3a3e46; border-radius:5px; }
::-webkit-scrollbar-track{ background:transparent; }

/* ---------- واکنش‌گرا (ساده) ---------- */
@media (max-width: 900px){
  #sidebar{ width:200px; }
  #toolbar{ width:40px; }
}