:root {
  --desktop: #d9d9d9;
  --chrome: #f2f2f2;
  --surface: #ffffff;
  --surface-soft: #f7f7f7;
  --selected: #0078d4;
  --selected-dark: #005a9e;
  --text: #1b1b1b;
  --muted: #5f6368;
  --border: #a6a6a6;
  --border-soft: #d1d1d1;
  --success: #107c10;
  --warning-bg: #fff4ce;
  --warning-border: #e1b900;
  --danger: #c42b1c;
  --focus: rgba(0, 120, 212, .22);
  font-family: "Segoe UI", "Microsoft JhengHei UI", "Microsoft JhengHei", sans-serif;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --desktop: #202020;
  --chrome: #2b2b2b;
  --surface: #1f1f1f;
  --surface-soft: #292929;
  --selected: #0067c0;
  --selected-dark: #2899f5;
  --text: #f3f3f3;
  --muted: #b6b6b6;
  --border: #666;
  --border-soft: #454545;
  --warning-bg: #433519;
  --warning-border: #c89b1b;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { min-height: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  padding-bottom: 24px;
  overflow-x: hidden;
  color: var(--text);
  background: var(--desktop);
  font-size: 14px;
}
button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }
.hidden { display: none !important; }
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.mmc-chrome {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--border);
  background: var(--chrome);
  box-shadow: 0 1px 4px rgba(0, 0, 0, .15);
}
.titlebar {
  height: 34px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 10px;
  background: linear-gradient(#fafafa, #e6e6e6);
  border-bottom: 1px solid var(--border-soft);
}
:root[data-theme="dark"] .titlebar { background: linear-gradient(#353535, #292929); }
.app-icon {
  width: 20px;
  height: 20px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  color: #fff;
  background: var(--selected);
  border: 1px solid var(--selected-dark);
  font-size: 12px;
  font-weight: 700;
}
.title-version { margin-left: auto; color: var(--muted); font-size: 12px; }
.menubar {
  height: 28px;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 8px;
  border-bottom: 1px solid var(--border-soft);
}
.menubar span { padding: 3px 8px; }
.menubar span:hover { background: var(--surface); outline: 1px solid var(--border-soft); }
.toolbar {
  min-height: 38px;
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 4px 8px;
}
.tool-button {
  min-height: 28px;
  padding: 2px 9px;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
}
.tool-button:hover, .tool-button:focus-visible {
  border-color: #78b9e6;
  background: #e5f3fb;
}
:root[data-theme="dark"] .tool-button:hover,
:root[data-theme="dark"] .tool-button:focus-visible { background: #163a52; }
.tool-button span { margin-right: 4px; color: var(--selected-dark); }
.tool-separator { width: 1px; height: 23px; margin: 0 4px; background: var(--border-soft); }
.provider-badge {
  margin-left: auto;
  padding: 4px 8px;
  color: var(--muted);
  border: 1px solid var(--border-soft);
  background: var(--surface);
  font-size: 12px;
}

.mmc-layout {
  width: calc(100% - 12px);
  max-width: 1600px;
  min-height: calc(100vh - 130px);
  margin: 6px auto;
  display: grid;
  grid-template-columns: 215px minmax(0, 1fr) 210px;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: 0 1px 5px rgba(0, 0, 0, .18);
}
.tree-pane, .action-pane { min-width: 0; background: var(--surface-soft); }
.tree-pane { border-right: 1px solid var(--border); }
.action-pane { border-left: 1px solid var(--border); }
.pane-caption {
  height: 28px;
  display: flex;
  align-items: center;
  padding: 0 9px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(#f7f7f7, #e4e4e4);
  font-weight: 600;
  font-size: 12px;
}
:root[data-theme="dark"] .pane-caption { background: linear-gradient(#353535, #292929); }
.tree-nav { padding: 7px 5px; }
.tree-root { padding: 5px 4px; font-weight: 600; }
.tree-item {
  width: 100%;
  min-height: 29px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 4px 8px 4px 23px;
  color: var(--text);
  text-align: left;
  text-decoration: none;
  border: 0;
  background: transparent;
  cursor: pointer;
}
.tree-item:hover { background: color-mix(in srgb, var(--selected) 12%, transparent); }
.tree-item.active { color: #fff; background: var(--selected); outline: 1px solid var(--selected-dark); }
.tree-footer {
  margin: 16px 10px;
  padding: 10px;
  border: 1px solid var(--border-soft);
  background: var(--surface);
  line-height: 1.5;
}
.tree-footer strong, .tree-footer span { display: block; }
.tree-footer span { margin-top: 5px; color: var(--muted); font-size: 12px; }

.console-pane { min-width: 0; background: var(--surface); }
.console-header {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.console-header h1 { margin: 0; font-size: 22px; font-weight: 400; }
.console-header p { margin: 5px 0 0; color: var(--muted); }
.security-state {
  flex: 0 0 auto;
  padding: 5px 8px;
  border: 1px solid var(--border-soft);
  background: var(--surface-soft);
  font-size: 12px;
}
.state-dot { width: 8px; height: 8px; display: inline-block; margin-right: 5px; border-radius: 50%; background: var(--success); }
.property-sheet, .result-card { margin: 12px; border: 1px solid var(--border); background: var(--surface); }
.property-sheet { padding: 0 16px 16px; }
.section-bar {
  min-height: 31px;
  margin: 0 -16px 14px;
  padding: 6px 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--surface-soft);
  border-bottom: 1px solid var(--border);
}
.section-bar span { color: var(--muted); font-size: 12px; }
fieldset { margin: 0 0 13px; padding: 0; border: 0; }
legend, label { display: block; font-weight: 600; font-size: 13px; }
.required::after { content: " *"; color: var(--danger); }
.type-switcher {
  display: flex;
  gap: 0;
  width: fit-content;
  margin-top: 6px;
  border: 1px solid var(--border);
}
.type-switcher label { position: relative; }
.type-switcher input { position: absolute; opacity: 0; pointer-events: none; }
.type-switcher span {
  min-width: 105px;
  min-height: 47px;
  display: grid;
  align-content: center;
  padding: 5px 16px;
  text-align: center;
  border-right: 1px solid var(--border);
  background: var(--surface-soft);
  cursor: pointer;
}
.type-switcher label:last-child span { border-right: 0; }
.type-switcher small { display: block; margin-top: 2px; color: var(--muted); font-size: 11px; font-weight: 400; }
.type-switcher input:checked + span { color: #fff; background: var(--selected); }
.type-switcher input:checked + span small { color: #fff; }
.type-switcher input:focus-visible + span { outline: 3px solid var(--focus); outline-offset: -3px; }
.field-hint { display: block; margin: 5px 0 0; color: var(--muted); font-size: 12px; font-weight: 400; }

input, textarea, select {
  width: 100%;
  margin-top: 4px;
  padding: 6px 8px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0;
  outline: 0;
}
input, select { min-height: 31px; }
textarea { min-height: 54px; resize: vertical; line-height: 1.55; }
input:focus, textarea:focus, select:focus { border-color: var(--selected); box-shadow: 0 0 0 2px var(--focus); }
input::placeholder, textarea::placeholder { color: color-mix(in srgb, var(--muted) 78%, transparent); }
.form-grid { display: grid; gap: 12px; margin-bottom: 13px; }
.two-col { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.three-col { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.property-sheet > label { margin-bottom: 13px; }
.upload-zone {
  min-height: 54px;
  display: grid;
  grid-template-columns: 30px 1fr auto;
  gap: 8px;
  align-items: center;
  margin: -3px 0 6px;
  padding: 7px 9px;
  border: 1px dashed var(--border);
  background: var(--surface-soft);
}
.upload-zone.dragging { border-color: var(--selected); background: color-mix(in srgb, var(--selected) 10%, var(--surface)); }
.upload-icon { font-size: 22px; color: var(--selected-dark); text-align: center; }
.upload-zone strong, .upload-zone small { display: block; }
.upload-zone small { margin-top: 2px; color: var(--muted); font-size: 11px; }
.file-status { min-height: 18px; margin-bottom: 8px; color: var(--success); font-size: 12px; }
.advanced-panel { margin: 4px 0 14px; border: 1px solid var(--border); background: var(--surface-soft); }
.advanced-panel summary { padding: 7px 9px; cursor: pointer; font-weight: 600; }
.advanced-content { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; padding: 6px 10px 10px; border-top: 1px solid var(--border-soft); }

.standard-button, .primary-button {
  min-height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 4px 14px;
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 0;
  background: linear-gradient(var(--surface), var(--surface-soft));
  cursor: pointer;
}
.standard-button:hover { border-color: var(--selected); background: color-mix(in srgb, var(--selected) 8%, var(--surface)); }
.primary-button { color: #fff; border-color: var(--selected-dark); background: var(--selected); }
.primary-button:hover { background: var(--selected-dark); }
.primary-button:disabled, .standard-button:disabled { opacity: .65; cursor: progress; }
.form-actions, .result-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.inference-panel { margin: 10px 0 14px; padding: 11px; border: 1px solid var(--selected); background: color-mix(in srgb, var(--selected) 7%, var(--surface)); }
.inference-row { display: grid; grid-template-columns: 24px 1fr auto; gap: 9px; align-items: center; }
.inference-row strong, .inference-row span { display: block; }
.inference-row span { margin-top: 2px; color: var(--muted); font-size: 12px; }
.inference-row time { min-width: 77px; text-align: right; font: 600 18px/1.2 "Cascadia Mono", Consolas, monospace; color: var(--selected-dark); }
.working-spinner { width: 18px; height: 18px; margin: 0 !important; border: 2px solid color-mix(in srgb, var(--selected) 25%, transparent); border-top-color: var(--selected); border-radius: 50%; animation: spin .8s linear infinite; }
.marquee-track { height: 4px; margin-top: 10px; overflow: hidden; background: color-mix(in srgb, var(--selected) 16%, transparent); }
.marquee-track span { width: 32%; height: 100%; display: block; background: var(--selected); animation: marquee 1.5s ease-in-out infinite; }
.inference-panel p { margin: 7px 0 0; color: var(--muted); font-size: 12px; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes marquee { from { transform: translateX(-110%); } to { transform: translateX(325%); } }

.result-card { margin-top: 0; }
.result-header {
  min-height: 49px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-soft);
}
.result-header h2 { margin: 0; font-size: 16px; }
.result-header span { display: block; margin-top: 3px; color: var(--muted); font-size: 11px; }
.document-editor { padding: 13px; }
.document-editor label + label { margin-top: 12px; }
.document-editor textarea { overflow-y: hidden; background: var(--surface); }
.warning-box { margin: 0 13px 13px; padding: 9px 11px; border: 1px solid var(--warning-border); background: var(--warning-bg); line-height: 1.5; }
.warning-box strong { display: block; margin-bottom: 4px; }
.warning-box ul { margin: 3px 0 0; padding-left: 20px; }
.warning-box p { margin: 0; }

.action-group { padding: 9px; border-bottom: 1px solid var(--border-soft); }
.action-group h2 { margin: 0 0 6px; color: var(--selected-dark); font-size: 13px; }
.action-group button {
  width: 100%;
  display: block;
  padding: 5px 3px;
  color: var(--selected-dark);
  text-align: left;
  border: 0;
  background: transparent;
  cursor: pointer;
}
.action-group button:hover { text-decoration: underline; }
.action-group ul { margin: 4px 0 2px; padding-left: 20px; color: var(--muted); line-height: 1.75; font-size: 12px; }
.quiet-info p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.55; }

.statusbar {
  position: fixed;
  z-index: 30;
  left: 0;
  right: 0;
  bottom: 0;
  height: 24px;
  display: grid;
  grid-template-columns: 1fr auto auto;
  background: var(--chrome);
  border-top: 1px solid var(--border);
  font-size: 11px;
}
.statusbar span { display: flex; align-items: center; padding: 0 8px; border-right: 1px solid var(--border-soft); }

dialog { width: min(680px, calc(100% - 24px)); max-height: 88vh; padding: 0; color: var(--text); border: 1px solid var(--border); border-radius: 0; background: var(--surface); box-shadow: 0 12px 40px rgba(0, 0, 0, .35); }
dialog::backdrop { background: rgba(0, 0, 0, .42); }
.login-dialog { width: min(410px, calc(100% - 24px)); }
.login-dialog form { padding: 0 18px 16px; }
.login-dialog h2 { margin: 18px 0 5px; font-size: 20px; font-weight: 400; }
.login-dialog p { color: var(--muted); line-height: 1.5; }
.login-dialog label { margin-top: 12px; }
.dialog-title {
  min-height: 36px;
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 -18px;
  padding: 6px 9px;
  background: var(--chrome);
  border-bottom: 1px solid var(--border);
}
.admin-dialog .dialog-title, .history-dialog .dialog-title { margin: 0; }
.close-button { width: 33px; height: 27px; margin-left: auto; border: 0; background: transparent; cursor: pointer; font-size: 18px; }
.close-button:hover { color: #fff; background: var(--danger); }
.dialog-actions { display: flex; justify-content: flex-end; margin-top: 14px; }
.error-text { min-height: 20px; margin-bottom: 0; color: var(--danger) !important; }
.admin-status, .admin-form { margin: 12px; padding: 11px; border: 1px solid var(--border); background: var(--surface-soft); }
.admin-status dl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
.admin-status dl div { padding: 7px; border: 1px solid var(--border-soft); background: var(--surface); }
.admin-status dt { color: var(--muted); font-size: 11px; }
.admin-status dd { margin: 3px 0 0; font-weight: 600; }
.admin-form { display: grid; gap: 8px; }
.admin-form h3 { margin: 0 0 3px; font-size: 14px; }
.history-dialog { padding-bottom: 12px; }
.search-field { margin: 12px; }
.history-list { max-height: 48vh; overflow: auto; margin: 0 12px; border: 1px solid var(--border-soft); }
.history-item { display: grid; grid-template-columns: 1fr auto; gap: 8px; padding: 7px; border-bottom: 1px solid var(--border-soft); }
.history-item:last-child { border-bottom: 0; }
.history-item .load-draft { color: var(--text); text-align: left; border: 0; background: transparent; cursor: pointer; }
.history-item strong, .history-item small { display: block; }
.history-item small { margin-top: 3px; color: var(--muted); font-size: 11px; }
.delete-button { width: 28px; height: 28px; color: var(--danger); border: 1px solid var(--border); background: var(--surface); cursor: pointer; }
.session-item { padding: 8px; border-bottom: 1px solid var(--border-soft); }
.session-item strong, .session-item small { display: block; }
.session-item small { margin-top: 2px; color: var(--muted); }
.empty-state { padding: 24px; color: var(--muted); text-align: center; }
.toast {
  position: fixed;
  z-index: 99;
  left: 50%;
  bottom: 34px;
  max-width: min(600px, calc(100% - 24px));
  padding: 8px 13px;
  color: #fff;
  background: #323232;
  border: 1px solid #111;
  transform: translate(-50%, 10px);
  opacity: 0;
  pointer-events: none;
  transition: .18s;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.error { background: var(--danger); }

@media (max-width: 1080px) {
  .mmc-layout { grid-template-columns: 190px minmax(0, 1fr); }
  .action-pane { display: none; }
}
@media (max-width: 760px) {
  body { padding-bottom: 0; }
  .menubar, .title-version, .tool-button span, .provider-badge, .tree-pane, .statusbar { display: none; }
  .toolbar { min-height: 35px; }
  .tool-button { display: block; }
  .mmc-layout { width: 100%; min-height: calc(100vh - 69px); margin: 0; grid-template-columns: 1fr; border-width: 1px 0 0; box-shadow: none; }
  .console-header { align-items: flex-start; }
  .security-state { display: none; }
  .property-sheet, .result-card { margin: 8px; }
  .two-col, .three-col, .advanced-content { grid-template-columns: 1fr; }
  .type-switcher { width: 100%; }
  .type-switcher label { flex: 1; }
  .type-switcher span { min-width: 0; padding-inline: 8px; }
  .upload-zone { grid-template-columns: 28px 1fr; }
  .upload-zone .standard-button { grid-column: 1 / -1; }
  .result-header { align-items: flex-start; flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
  .working-spinner, .marquee-track span { animation-duration: 2.5s; }
}