/* 顶栏：模型名、快捷档位、设置入口。 */
/* ===== 顶栏 ===== */
.topbar {
  flex: none;
  position: relative;
  z-index: 4;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  min-height: calc(64px + env(safe-area-inset-top));
  padding: calc(10px + env(safe-area-inset-top)) 12px 10px 18px;
  border-bottom: 0.5px solid rgba(31,30,29,0.12);
  background: var(--bg-primary);
}
.brand-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-self: start;
  min-width: 0;
  min-height: 44px;
  margin-left: -6px;
  padding: 0 6px;
  color: inherit;
  background: transparent;
  border: none;
  border-radius: 12px;
  font: inherit;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: opacity var(--motion-fast) ease;
}
.brand-wrap:active { opacity: .62; }
.model-control {
  position: relative;
  justify-self: center;
  min-width: 0;
}
.model-quick {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-width: 44px;
  max-width: 138px;
  min-height: 44px;
  padding: 7px 10px;
  border: none;
  border-radius: 12px;
  color: var(--text-secondary);
  background: transparent;
  font-size: 14px;
  font-weight: 650;
  cursor: pointer;
}
.model-quick:active,
.icon-button:active {
  transform: scale(.97);
}
.model-quick-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.model-quick svg {
  flex: none;
  width: 15px;
  height: 15px;
  transition: transform var(--motion-fast) var(--ease-out);
}
.model-quick[aria-expanded="true"] svg { transform: rotate(180deg); }
.topbar-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 0;
}
.topbar-actions .icon-button {
  position: relative;
  width: 40px;
  height: 40px;
}
.topbar-actions .icon-button::after {
  content: "";
  position: absolute;
  inset: -2px 0;
}
.tool-clear {
  color: var(--text-muted);
}
.icon-button:disabled {
  opacity: .35;
  cursor: default;
}
.icon-button {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: color var(--motion-fast) ease, transform var(--motion-fast) var(--ease-out);
}
.icon-button svg,
.settings-back svg,
.search-icon {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.65;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.quick-panel {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  width: min(280px, calc(100vw - 24px));
  padding: 14px;
  color: var(--text-primary);
  background: rgba(255,255,255,.97);
  border-radius: 18px;
  box-shadow: 0 14px 38px rgba(31,30,29,.15), 0 0 0 .5px rgba(31,30,29,.16);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(-50%) translateY(-5px) scale(.98);
  transform-origin: top center;
  transition:
    opacity var(--motion-fast) var(--ease-out),
    transform var(--motion-fast) var(--ease-out),
    visibility 0s linear var(--motion-fast);
}
.quick-panel.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0) scale(1);
  transition-delay: 0s;
}
.quick-model-id {
  display: block;
  margin-bottom: 11px;
  overflow: hidden;
  color: var(--text-muted);
  font-family: 'SF Mono', 'Fira Code', Menlo, Consolas, monospace;
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.control-label {
  display: block;
  margin-bottom: 7px;
  color: var(--text-muted);
  font-size: 12px;
}
.effort-options {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  padding: 2px;
  background: rgba(31,30,29,.055);
  border: .5px solid rgba(31,30,29,.08);
  border-radius: 11px;
}
.effort-option {
  position: relative;
  min-height: 40px;
  padding: 6px 3px;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: 8px;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}
.effort-option::after {
  content: "";
  position: absolute;
  inset: -2px 0;
}
.effort-option[aria-pressed="true"] {
  color: #fff;
  background: var(--btn-primary-bg);
}
.effort-option:disabled {
  opacity: .35;
  cursor: default;
}
.quick-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: 44px;
  margin-top: 8px;
  padding: 5px 3px;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-top: .5px solid rgba(31,30,29,.1);
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.quick-state {
  color: var(--text-muted);
  font-size: 12px;
}
.quick-chevron {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: var(--text-muted);
  stroke-width: 1.65;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.spark {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--accent);
}
.brand {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--text-primary);
  letter-spacing: 0.2px;
}