:root {
  color: #1d2528;
  background: #eef2f3;
  font-family: "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
}

button,
input,
textarea {
  font: inherit;
}

button {
  min-height: 42px;
  border: 1px solid #b8c5c8;
  border-radius: 6px;
  padding: 0 18px;
  color: #173033;
  background: #ffffff;
  cursor: pointer;
}

button.primary {
  border-color: #126c64;
  color: #ffffff;
  background: #126c64;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.app-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 36px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0 22px;
}

.eyebrow {
  margin: 0 0 6px;
  color: #52656a;
  font-size: 13px;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: 34px;
  font-weight: 700;
}

h2 {
  font-size: 18px;
}

.status {
  min-width: 116px;
  border: 1px solid #c5d0d2;
  border-radius: 999px;
  padding: 9px 14px;
  text-align: center;
  color: #6a2b1d;
  background: #fff7f4;
}

.status.ok {
  color: #145248;
  background: #edf8f3;
}

.workbench,
.upload-band,
.api-panel,
.result-panel {
  border: 1px solid #d5dddf;
  border-radius: 8px;
  background: #ffffff;
}

.workbench {
  padding: 18px;
}

.controls,
.upload-band,
.panel-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.timer {
  min-width: 74px;
  color: #42565b;
  font-variant-numeric: tabular-nums;
}

#meter {
  display: block;
  width: 100%;
  height: 92px;
  margin: 16px 0;
  border-radius: 6px;
}

audio {
  width: 100%;
}

.upload-band {
  margin-top: 14px;
  padding: 14px 18px;
  justify-content: space-between;
}

.api-panel {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
  padding: 12px 18px;
}

.api-panel span {
  color: #52656a;
}

.api-panel code {
  color: #126c64;
  word-break: break-all;
}

.result-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 14px;
  margin-top: 14px;
}

.result-panel {
  min-height: 280px;
  padding: 16px;
}

.panel-title {
  justify-content: space-between;
  margin-bottom: 12px;
}

#elapsed {
  color: #52656a;
  font-size: 14px;
}

textarea,
pre {
  width: 100%;
  min-height: 220px;
  margin: 0;
  border: 1px solid #d7dee2;
  border-radius: 6px;
  padding: 12px;
  color: #1d2528;
  background: #f8fafb;
}

textarea {
  resize: vertical;
}

pre {
  overflow: auto;
  white-space: pre-wrap;
}

@media (max-width: 760px) {
  .topbar,
  .controls,
  .upload-band {
    align-items: stretch;
    flex-direction: column;
  }

  .status {
    width: 100%;
  }

  .result-grid {
    grid-template-columns: 1fr;
  }
}