#magnets-expert-root { font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif; }
#magnets-expert-root * { box-sizing: border-box; }

#magnets-expert-fab {
  position: fixed; right: 20px; bottom: 168px; z-index: 9998;
  width: 56px; height: 56px; border: none; border-radius: 50%;
  background: linear-gradient(145deg, #070a12, #1558ff); color: #fff;
  font-size: 13px; font-weight: 700; cursor: pointer;
  box-shadow: 0 8px 24px rgba(10, 22, 40, 0.35);
}
#magnets-expert-fab span { display: block; line-height: 1.15; }

#magnets-expert-panel {
  position: fixed; right: 16px; bottom: 16px; z-index: 9999;
  width: min(720px, calc(100vw - 24px));
  height: min(620px, calc(100vh - 32px));
  background: #fff; border-radius: 4px; box-shadow: 0 16px 48px rgba(0,0,0,0.22);
  display: none; flex-direction: column; overflow: hidden; border: 1px solid #d8e0ea;
}
#magnets-expert-panel.open { display: flex; }

#magnets-expert-panel header {
  background: linear-gradient(145deg, #070a12, #0a1630); color: #fff;
  padding: 12px 14px; display: flex; align-items: flex-start; gap: 10px;
  flex-shrink: 0;
}
#magnets-expert-panel header .titles { flex: 1; min-width: 0; }
#magnets-expert-panel header h2 { margin: 0; font-size: 15px; font-weight: 700; }
#magnets-expert-panel header p { margin: 2px 0 0; font-size: 11px; opacity: 0.85; }
#magnets-expert-close {
  background: transparent; border: none; color: #fff; font-size: 22px;
  line-height: 1; cursor: pointer; padding: 0 4px;
}

#magnets-expert-human {
  display: block; margin: 10px 12px 0; text-align: center;
  background: #25d366; color: #fff !important; text-decoration: none;
  font-weight: 700; font-size: 13px; padding: 10px 12px; border-radius: 2px;
  flex-shrink: 0;
}

#magnets-expert-gate {
  flex: 1; padding: 16px 14px; background: #f3f1ea;
  display: flex; flex-direction: column; gap: 10px; overflow-y: auto;
}
#magnets-expert-gate .mec-gate-intro {
  margin: 0; font-size: 14px; line-height: 1.45; color: #0a1628; font-weight: 600;
}
#magnets-expert-gate input {
  border: 1px solid #94a3b8; border-radius: 2px; padding: 12px 12px; font-size: 15px;
  background: #fff;
}
#magnets-expert-gate .mec-gate-hint { margin: 0; font-size: 12px; color: #64748b; }
#magnets-expert-gate .mec-gate-err { margin: 0; font-size: 13px; color: #b91c1c; min-height: 1.2em; font-weight: 600; }
#mec-gate-btn {
  border: none; border-radius: 2px; background: #0b3a5b; color: #fff;
  font-weight: 700; padding: 14px; cursor: pointer; font-size: 15px; margin-top: 4px;
}

/* Two-column body */
#magnets-expert-body {
  flex: 1; min-height: 0; display: none;
  flex-direction: row; background: #f3f1ea;
}

#magnets-expert-left {
  flex: 1; min-width: 0; display: flex; flex-direction: column; min-height: 0;
  order: 2;
}
#magnets-expert-right {
  width: 240px; flex-shrink: 0; border-left: 1px solid #e2e8f0;
  background: #fff; display: flex; flex-direction: column; min-height: 0;
  order: 3;
}

#mec-upload-toggle {
  display: none;
  width: 100%; border: none; border-bottom: 1px solid #e2e8f0;
  background: #0a1630; color: #fff; font-weight: 700; font-size: 13px;
  padding: 10px 12px; cursor: pointer; text-align: left;
}

#mec-upload-inner {
  padding: 12px; overflow-y: auto; flex: 1; display: flex; flex-direction: column; gap: 10px;
}
.mec-upload-title {
  margin: 0; font-size: 13px; font-weight: 800; text-transform: uppercase;
  letter-spacing: 0.06em; color: #070a12;
}
.mec-upload-tip {
  margin: 0; font-size: 12px; line-height: 1.45; color: #5d6270;
}

#mec-drop {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 4px; padding: 16px 10px; border: 1.5px dashed #1558ff;
  background: rgba(21, 88, 255, 0.06); border-radius: 4px; cursor: pointer;
  text-align: center; color: #0a1628;
}
#mec-drop:hover { background: rgba(21, 88, 255, 0.12); }
#mec-drop strong { font-size: 13px; }
#mec-drop span { font-size: 11px; color: #64748b; }
.mec-drop-icon { font-size: 22px; line-height: 1; }
#mec-file { position: absolute; width: 1px; height: 1px; opacity: 0; overflow: hidden; }

#mec-preview-wrap {
  display: flex; flex-direction: column; gap: 6px;
  border: 1px solid #e2e8f0; border-radius: 4px; padding: 8px; background: #f8fafc;
}
#mec-preview-wrap[hidden] { display: none !important; }
#mec-preview-img {
  width: 100%; max-height: 140px; object-fit: contain; border-radius: 2px;
  background: #fff; border: 1px solid #e2e8f0;
}
#mec-preview-meta { margin: 0; font-size: 11px; color: #475569; line-height: 1.35; word-break: break-word; }
#mec-clear-file {
  align-self: flex-start; border: 1px solid #cbd5e1; background: #fff;
  border-radius: 2px; padding: 4px 10px; font-size: 12px; cursor: pointer; color: #0a1628;
}
#mec-attach-status { margin: 0; font-size: 11px; color: #1558ff; min-height: 1.2em; font-weight: 600; }

#magnets-expert-msgs {
  flex: 1; overflow-y: auto; padding: 12px;
  display: flex; flex-direction: column; gap: 8px; min-height: 0;
}
.mec-msg {
  max-width: 92%; padding: 8px 11px; border-radius: 12px;
  font-size: 13px; line-height: 1.45;
}
.mec-msg-text { white-space: pre-wrap; }
.mec-msg-thumb {
  display: block; max-width: 160px; max-height: 110px; object-fit: cover;
  border-radius: 6px; margin-bottom: 6px; border: 1px solid rgba(255,255,255,0.35);
}
.mec-msg.bot { align-self: flex-start; background: #fff; border: 1px solid #e2e8f0; color: #0a1628; }
.mec-msg.user { align-self: flex-end; background: #0b3a5b; color: #fff; }
.mec-msg.err { align-self: flex-start; background: #fff5f5; border: 1px solid #fecaca; color: #991b1b; }

#magnets-expert-form {
  display: flex; gap: 8px; padding: 10px; border-top: 1px solid #e2e8f0; background: #fff;
  flex-shrink: 0;
}
#magnets-expert-input {
  flex: 1; border: 1px solid #cbd5e1; border-radius: 2px; padding: 10px 12px; font-size: 14px;
}
#magnets-expert-send {
  border: none; border-radius: 2px; background: #0b3a5b; color: #fff;
  font-weight: 700; padding: 0 14px; cursor: pointer;
}
#magnets-expert-send:disabled { opacity: 0.5; cursor: wait; }

/* Mobile: upload on top, collapsible */
@media (max-width: 640px) {
  #magnets-expert-panel {
    width: calc(100vw - 16px); right: 8px; bottom: 8px;
    height: min(92vh, calc(100vh - 16px));
  }
  #magnets-expert-body { flex-direction: column; }
  #magnets-expert-right {
    width: 100%; border-left: none; border-bottom: 1px solid #e2e8f0;
    max-height: 42%; order: 1;
  }
  #magnets-expert-left { order: 2; min-height: 0; }
  #mec-upload-toggle { display: block; }
  #magnets-expert-right.collapsed #mec-upload-inner { display: none; }
  #magnets-expert-right.collapsed { max-height: none; }
  #mec-preview-img { max-height: 100px; }
}

body:has(#magnets-expert-root) .wa-fab { bottom: 88px !important; }
body:has(#magnets-expert-root) .call-fab { bottom: 148px !important; right: 20px; }