.settings-sheet-backdrop {
  position: fixed;
  inset: 0;
  z-index: 12000;
  background: rgb(15 23 42 / 42%);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: flex-end;
}

.settings-sheet {
  width: 100%;
  max-height: min(82dvh, 760px);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 28px 28px 0 0;
  background: #fff;
  color: #111827;
  padding: 18px 18px calc(24px + env(safe-area-inset-bottom, 0px));
  box-shadow: 0 -20px 48px rgb(15 23 42 / 18%);
}

.settings-sheet-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.settings-sheet-title {
  font-size: 18px;
  font-weight: 800;
  color: #111827;
}

.settings-sheet-subtitle {
  margin-top: 4px;
  color: #667085;
  font-size: 12px;
}

.settings-close-button {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1px solid #e7ebf1;
  background: #f8fafc;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #111827;
  cursor: pointer;
}

.settings-section {
  margin-top: 18px;
}

.settings-section-title {
  display: block;
  margin-bottom: 10px;
  color: #111827;
  font-size: 13px;
  font-weight: 800;
}

.preset-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.preset-chip {
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid #e7ebf1;
  background: #fff;
  color: #475467;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.preset-chip.active {
  border-color: #bfdbfe;
  background: #eff6ff;
  color: #1d4ed8;
}

.preset-chip.user-preset-chip {
  border-style: dashed;
}

.preset-chip.user-preset-chip.active {
  border-style: solid;
}

.settings-empty-copy {
  color: #94a3b8;
  font-size: 12px;
  line-height: 1.6;
}

.ref-audio-card {
  padding: 14px;
  border-radius: 18px;
  border: 1px solid #e7ebf1;
  background: #f8fafc;
}

.ref-audio-title {
  color: #111827;
  font-size: 13px;
  font-weight: 800;
}

.ref-audio-meta {
  margin-top: 6px;
  color: #667085;
  font-size: 12px;
}

.ref-audio-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #d0d5dd;
  border-radius: 14px;
  background: #f9fafb;
  color: #344054;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.secondary-btn:active {
  background: #e5e7eb;
}

.secondary-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.secondary-btn.compact {
  min-height: 36px;
  padding: 0 14px;
  font-size: 13px;
}

.save-preset-chip {
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px dashed #93c5fd;
  background: #f0f7ff;
  color: #2563eb;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s;
}

.save-preset-chip:active {
  background: #dbeafe;
}

.ref-audio-recording-active {
  border-color: #f87171 !important;
  background: #fef2f2 !important;
  color: #dc2626 !important;
}

.rec-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ef4444;
  margin-right: 5px;
  vertical-align: middle;
  animation: rec-blink 1s ease-in-out infinite;
}

@keyframes rec-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.settings-textarea {
  width: 100%;
  min-height: 132px;
  padding: 14px;
  border-radius: 18px;
  border: 1px solid #e7ebf1;
  background: #fff;
  color: #111827;
  resize: vertical;
  box-sizing: border-box;
  font-family: inherit;
  font-size: 13px;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.settings-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: #475467;
  font-size: 12px;
  font-weight: 700;
}

.settings-input {
  width: 100%;
  min-height: 42px;
  padding: 0 12px;
  border-radius: 14px;
  border: 1px solid #e7ebf1;
  background: #fff;
  color: #111827;
  box-sizing: border-box;
  font-size: 14px;
}

.settings-toggle {
  margin-top: 14px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #111827;
  font-size: 13px;
  font-weight: 700;
}

.settings-lang-toggle {
  display: flex;
  gap: 8px;
}

.lang-chip {
  padding: 6px 18px;
  border-radius: 20px;
  border: 1px solid #e5e7eb;
  background: transparent;
  color: #6b7280;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}

.lang-chip.active {
  background: #1e6fff;
  color: #fff;
  border-color: #1e6fff;
}

.lang-chip:not(.active):active {
  background: #f3f4f6;
}