:root {
  --bg: #efe4d4;
  --panel: rgba(255, 251, 245, 0.88);
  --panel-strong: #fff9f1;
  --text: #18212b;
  --muted: #5c6572;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --accent-soft: rgba(15, 118, 110, 0.12);
  --warm: #b45309;
  --line: rgba(24, 33, 43, 0.12);
  --line-strong: rgba(24, 33, 43, 0.2);
  --shadow: 0 24px 80px rgba(24, 33, 43, 0.12);
  --radius: 26px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 0% 0%, rgba(15, 118, 110, 0.16), transparent 28%),
    radial-gradient(circle at 100% 0%, rgba(180, 83, 9, 0.18), transparent 30%),
    linear-gradient(180deg, #fbf7f0 0%, var(--bg) 100%);
}

.shell {
  width: min(1360px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0 54px;
}

.hero {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 24px;
  align-items: stretch;
  margin-bottom: 24px;
}

.hero-copy,
.hero-card,
.panel,
.summary-card,
.metric-card,
.plot-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero-copy {
  padding: 28px;
}

.eyebrow,
.panel-kicker,
.card-label,
.summary-label {
  margin: 0 0 10px;
  color: var(--accent-strong);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
label,
button,
.download-link,
.secondary-button,
select {
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
}

h1 {
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4.6rem);
  line-height: 0.94;
  max-width: 12ch;
}

h2 {
  margin: 0;
  font-size: 1.45rem;
}

.lead,
.card-copy,
.helper-text,
.spotlight-copy,
.metric-card p,
.plot-card p {
  color: var(--muted);
  line-height: 1.7;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.hero-points span,
.panel-badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 8px 12px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.92rem;
}

.hero-card {
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.card-value {
  margin: 0;
  font-size: 2rem;
  line-height: 1.05;
}

.card-stack {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.card-stack div {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.card-stack strong {
  font-size: 1rem;
}

.card-stack span {
  color: var(--muted);
}

.panel {
  padding: 24px;
}

.panel-head,
.actions,
.section-head,
.panel-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.upload-panel {
  margin-bottom: 24px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.file-field {
  margin-top: 18px;
}

label {
  font-size: 0.95rem;
}

input,
select,
button,
.download-link,
.secondary-button {
  width: 100%;
  border-radius: 16px;
  padding: 13px 14px;
  font: inherit;
}

input,
select {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
  color: var(--text);
}

input:focus,
select:focus {
  outline: 2px solid rgba(15, 118, 110, 0.18);
  border-color: rgba(15, 118, 110, 0.4);
}

button,
.download-link,
.secondary-button {
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 140ms ease, background 140ms ease, opacity 140ms ease;
}

button,
.download-link {
  background: var(--accent);
  color: #fff;
}

.secondary-button {
  background: rgba(24, 33, 43, 0.08);
  color: var(--text);
}

button:hover,
.download-link:hover,
.secondary-button:hover {
  transform: translateY(-1px);
}

button:hover,
.download-link:hover {
  background: var(--accent-strong);
}

.secondary-button:hover {
  background: rgba(24, 33, 43, 0.12);
}

.actions {
  margin-top: 18px;
}

.status {
  min-width: 240px;
  margin: 0;
  color: var(--muted);
  text-align: right;
}

.summary-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.summary-card {
  padding: 18px 20px;
}

.summary-card strong {
  display: block;
  font-size: 1.3rem;
}

.summary-card span {
  color: var(--muted);
}

.feature-panel {
  margin-bottom: 20px;
}

.feature-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 16px;
  margin-top: 18px;
}

.audio-card,
.insights-card {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--panel-strong);
  padding: 18px;
}

audio {
  width: 100%;
  margin-top: 8px;
}

.insights-list {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 10px;
}

.results-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 20px;
  align-items: start;
}

.results-main,
.results-side {
  display: grid;
  gap: 20px;
}

.spotlight-image {
  width: 100%;
  display: block;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: white;
  margin-top: 14px;
}

.plots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.plot-card {
  padding: 18px;
  cursor: pointer;
  transition: transform 140ms ease, border-color 140ms ease, box-shadow 140ms ease;
}

.plot-card:hover,
.plot-card.is-active {
  transform: translateY(-2px);
  border-color: rgba(15, 118, 110, 0.42);
  box-shadow: 0 20px 50px rgba(15, 118, 110, 0.16);
}

.plot-card img {
  width: 100%;
  display: block;
  border-radius: 18px;
  margin-top: 12px;
  border: 1px solid var(--line);
  background: white;
}

.metrics-grid {
  display: grid;
  gap: 12px;
}

.compact-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.metric-card {
  padding: 16px;
}

.metric-card h3,
.plot-card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.metric-value {
  display: block;
  margin-top: 8px;
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.2;
}

.hidden {
  display: none;
}

@media (max-width: 1100px) {
  .hero,
  .results-layout,
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .grid,
  .summary-strip {
    grid-template-columns: 1fr;
  }

  .panel-head,
  .actions,
  .section-head,
  .panel-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .status {
    text-align: left;
    min-width: auto;
  }
}