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

body {
  font-family: 'Segoe UI', sans-serif;
  background: #0d0f14;
  color: #e8eaf0;
  height: 100vh;
  overflow: hidden;
}

/* HEADER */
header {
  height: 52px;
  background: #141720;
  border-bottom: 1px solid #1e2535;
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 16px;
}

.logo {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 3px;
  color: #00d4ff;
}

.btn-scan {
  margin-left: auto;
  padding: 8px 18px;
  background: #00d4ff;
  border: none;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 600;
  color: #000;
  cursor: pointer;
}
.btn-scan:hover { background: #00b8d9; }

/* MAIN LAYOUT */
main {
  display: grid;
  grid-template-columns: 280px 1fr 260px;
  height: calc(100vh - 52px);
}

/* LEFT PANEL */
.panel-left {
  background: #141720;
  border-right: 1px solid #1e2535;
  display: flex;
  flex-direction: column;
  padding: 12px;
  gap: 10px;
  overflow-y: auto;
}

.panel-title {
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #5a6680;
  padding: 4px 0;
}

.btn-upload {
  padding: 10px;
  background: #1c2030;
  border: 1px dashed #252f45;
  border-radius: 7px;
  color: #00d4ff;
  font-size: 12px;
  cursor: pointer;
  text-align: center;
}
.btn-upload:hover { border-color: #00d4ff; }

/* PART ITEMS */
.part-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 10px;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s;
}
.part-item:hover { background: #1c2030; border-color: #252f45; }
.part-item.active { background: rgba(0,212,255,0.08); border-color: #00d4ff; }
.part-item.scanned { opacity: 0.5; }

.part-swatch {
  width: 12px; height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}
.part-name { font-size: 12px; flex: 1; }
.part-code { font-size: 10px; color: #00d4ff; }
.part-check { font-size: 13px; color: #1e2535; }
.part-check.done { color: #00ff88; }

/* CENTER */
.panel-center {
  position: relative;
  background: #080a0f;
}

#canvas3d { width: 100%; height: 100%; display: block; }

.hint {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  color: #2a3350;
  font-size: 14px;
  letter-spacing: 1px;
  pointer-events: none;
}

/* RIGHT PANEL */
.panel-right {
  background: #141720;
  border-left: 1px solid #1e2535;
  padding: 16px;
  overflow-y: auto;
}

.no-select {
  color: #2a3350;
  font-size: 13px;
  text-align: center;
  margin-top: 40px;
}

.info-block { margin-bottom: 16px; }
.info-label {
  font-size: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #5a6680;
  margin-bottom: 5px;
}
.info-value { font-size: 14px; font-weight: 500; }
.info-value.accent { color: #00d4ff; }
.info-value.green { color: #00ff88; }

.dim-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
}
.dim-box {
  background: #1c2030;
  border: 1px solid #1e2535;
  border-radius: 5px;
  padding: 8px;
  text-align: center;
}
.dim-box .dk { font-size: 9px; color: #5a6680; }
.dim-box .dv { font-size: 15px; color: #00d4ff; font-weight: 700; }

/* MODAL: QR Scanner */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.modal.hidden { display: none; }

.modal-box {
  background: #141720;
  border: 1px solid #1e2535;
  border-radius: 12px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  width: 340px;
}

.modal-title { font-size: 13px; color: #5a6680; letter-spacing: 1px; }

#video {
  width: 300px;
  height: 300px;
  border-radius: 8px;
  border: 2px solid #00d4ff;
  object-fit: cover;
}

.btn-close {
  padding: 9px 24px;
  background: #1c2030;
  border: 1px solid #252f45;
  border-radius: 7px;
  color: #e8eaf0;
  cursor: pointer;
  font-size: 13px;
}
.btn-close:hover { border-color: #ff4466; color: #ff4466; }

/* SCROLLBAR */
::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #1e2535; border-radius: 2px; }
.btn-ctrl {
  padding: 7px 14px;
  background: #1c2030;
  border: 1px solid #252f45;
  border-radius: 7px;
  color: #e8eaf0;
  font-size: 12px;
  cursor: pointer;
}
.btn-ctrl:hover { border-color: #00d4ff; color: #00d4ff; }
.btn-ctrl.on { border-color: #00d4ff; color: #00d4ff; background: rgba(0,212,255,0.1); }

.btn-toggle-vis {
  width: 100%;
  padding: 9px;
  background: #1c2030;
  border: 1px solid #252f45;
  border-radius: 7px;
  color: #e8eaf0;
  font-size: 12px;
  cursor: pointer;
  text-align: center;
}
.btn-toggle-vis:hover { border-color: #00d4ff; color: #00d4ff; }

.hidden-part { opacity: 0.4; }