.page {
  min-height: 100vh;
  padding: 0 28px 50px;
  color: var(--foreground);
  background: var(--background);
  font-family: var(--font-family-base);
}

.topbar,
.heading,
.dropPanel,
.results {
  width: min(1120px, 100%);
  margin-inline: auto;
}

.topbar {
  min-height: 82px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.topbar img {
  width: 240px;
  max-height: 60px;
  object-fit: contain;
}

.topbar > span {
  justify-self: end;
  color: var(--muted-foreground);
  font: .68rem/1 var(--font-family-monospace);
}

.backLink {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  width: fit-content;
  color: var(--muted-foreground);
  text-decoration: none;
  font-size: .78rem;
}

.heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 0 20px;
}

.heading > div > span {
  color: #687582;
  font: 500 .62rem/1 var(--font-family-monospace);
  letter-spacing: .12em;
}

.heading h1 {
  margin: 7px 0 6px;
  font: 600 2.3rem/1 var(--font-family-display);
}

.heading p {
  margin: 0;
  color: var(--muted-foreground);
  font-size: .8rem;
}

.dropPanel {
  padding: 18px;
  border: 1px solid var(--border);
  background: var(--card);
}

.results {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.card {
  border: 1px solid var(--border);
  background: var(--card);
}

.fileHeader {
  min-height: 56px;
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  border-bottom: 1px solid var(--border);
}

.fileHeader > svg {
  color: var(--primary);
}

.fileHeader strong,
.fileHeader span {
  display: block;
}

.fileHeader strong {
  font-size: .78rem;
}

.fileHeader div span {
  margin-top: 3px;
  color: #68737f;
  font-size: .64rem;
}

.status {
  color: #8dd4dc;
  font-size: .67rem;
}

.error {
  padding: 12px 14px;
  color: #f1a6bc;
  font-size: .72rem;
}

.analysis {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, .8fr);
  gap: 16px;
  padding: 14px;
}

.spectrogram {
  width: 100%;
  height: 230px;
  display: block;
  image-rendering: auto;
  background: #0b0d12;
  border: 1px solid #282e37;
}

.metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid #282e37;
}

.metrics > div {
  min-height: 72px;
  padding: 11px;
  border-right: 1px solid #282e37;
  border-bottom: 1px solid #282e37;
}

.metrics svg {
  color: #71808f;
}

.metrics span,
.metrics strong {
  display: block;
}

.metrics span {
  margin-top: 6px;
  color: #697582;
  font-size: .62rem;
}

.metrics strong {
  margin-top: 3px;
  font-size: .75rem;
}

@media (max-width: 900px) {
  .page { padding: 0 10px 84px; }
  .topbar { position:sticky;top:0;z-index:20;min-height:58px;grid-template-columns:auto 1fr;background:rgba(11,12,16,.97); }
  .topbar img { width: 132px; justify-self: end; }
  .topbar > span { display: none; }
  .backLink{font-size:0}.backLink svg{width:20px;height:20px}
  .heading { align-items: stretch; flex-direction: column;gap:10px;padding:18px 2px 14px; }
  .heading h1{font-size:1.75rem}.heading p{font-size:.74rem;line-height:1.5}
  .dropPanel{padding:10px;border-left:0;border-right:0}
  .results{gap:9px;margin-top:10px}
  .fileHeader{grid-template-columns:24px 1fr;gap:6px;padding:8px 10px}
  .status{grid-column:2}
  .analysis { grid-template-columns: 1fr;gap:10px;padding:10px; }
  .spectrogram{height:180px}
  .metrics{grid-template-columns:repeat(2,1fr)}
  .metrics>div{min-height:64px;padding:9px}
}