:root {
  --bg: #f5eddd;
  --bg-strong: #efe0c2;
  --panel: rgba(255, 249, 239, 0.82);
  --panel-strong: rgba(255, 251, 245, 0.94);
  --border: rgba(69, 63, 56, 0.12);
  --ink: #1f2430;
  --muted: #5e6672;
  --accent: #d45f3a;
  --accent-soft: rgba(212, 95, 58, 0.12);
  --teal: #1b857c;
  --amber: #d9a33d;
  --blue: #2c6ea6;
  --clay: #8f4a33;
  --danger: #b43d31;
  --shadow: 0 18px 40px rgba(44, 39, 33, 0.12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Aptos, "Segoe UI", "Trebuchet MS", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(27, 133, 124, 0.18), transparent 30%),
    radial-gradient(circle at 90% 10%, rgba(212, 95, 58, 0.18), transparent 32%),
    linear-gradient(180deg, #f7f0e4 0%, var(--bg) 55%, var(--bg-strong) 100%);
}

button,
input,
select {
  font: inherit;
}

.page-shell {
  width: min(1280px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.5rem 0 2.25rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  animation: rise-in 520ms ease both;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.75rem;
  background:
    linear-gradient(140deg, rgba(255, 250, 244, 0.92), rgba(251, 241, 220, 0.82)),
    linear-gradient(45deg, rgba(27, 133, 124, 0.08), rgba(212, 95, 58, 0.08));
}

.hero-copy {
  max-width: 50rem;
}

.eyebrow,
.section-kicker,
.metric-label {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--muted);
}

.hero h1,
.panel h2 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, serif;
  letter-spacing: -0.03em;
}

.hero h1 {
  font-size: clamp(2.3rem, 5vw, 4.4rem);
  line-height: 0.98;
}

.lede,
.section-copy,
.metric-copy,
.diagnosis-copy,
.footer-note,
.control-help {
  color: var(--muted);
  line-height: 1.55;
}

.lede {
  margin: 0.85rem 0 0;
  max-width: 42rem;
  font-size: 1.04rem;
}

.hero-meta {
  display: grid;
  align-content: start;
  gap: 0.85rem;
  justify-items: end;
}

.ghost-link,
.formula-chip {
  padding: 0.85rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(31, 36, 48, 0.12);
  background: rgba(255, 255, 255, 0.55);
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.ghost-link:hover,
.ghost-link:focus-visible {
  border-color: rgba(31, 36, 48, 0.26);
  transform: translateY(-1px);
}

.formula-chip {
  margin: 0;
  font-weight: 600;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(320px, 390px) minmax(0, 1fr) minmax(300px, 360px);
  gap: 1rem;
  margin-top: 1rem;
  align-items: start;
}

.control-panel,
.metrics-panel,
.chart-panel,
.breakdown-panel,
.diagnosis-panel {
  padding: 1.35rem;
}

.output-column {
  display: grid;
  gap: 1rem;
  align-content: start;
  min-width: 0;
}

.chart-panel {
  min-width: 0;
}

.panel-heading {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 1.1rem;
}

.panel-heading.compact {
  margin-bottom: 1rem;
}

.panel-heading h2 {
  font-size: clamp(1.5rem, 2vw, 2.15rem);
}

.panel-heading .section-copy {
  margin: 0;
}

.mode-switch {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.45rem;
  padding: 0.35rem;
  border-radius: 999px;
  background: rgba(31, 36, 48, 0.05);
  margin-bottom: 1rem;
}

.mode-button {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 0.75rem 1rem;
  border-radius: 999px;
  cursor: pointer;
  transition: background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.mode-button:hover,
.mode-button:focus-visible {
  transform: translateY(-1px);
}

.mode-button.is-active {
  background: linear-gradient(135deg, var(--accent), #e17b4c);
  color: #fffaf3;
}

.control-stack,
.agent-fields {
  display: grid;
  gap: 1rem;
}

.agent-fields {
  padding-top: 1rem;
  margin-top: 1rem;
  border-top: 1px solid rgba(31, 36, 48, 0.08);
}

.control {
  display: grid;
  gap: 0.45rem;
}

.control-topline {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  font-weight: 600;
}

.control output {
  color: var(--clay);
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  width: 100%;
  appearance: none;
  height: 0.65rem;
  border-radius: 999px;
  background:
    linear-gradient(90deg, rgba(27, 133, 124, 0.2), rgba(212, 95, 58, 0.22)),
    rgba(31, 36, 48, 0.08);
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50%;
  border: 2px solid #fff;
  background: linear-gradient(135deg, var(--accent), #e88b5b);
  box-shadow: 0 5px 14px rgba(212, 95, 58, 0.35);
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50%;
  border: 2px solid #fff;
  background: linear-gradient(135deg, var(--accent), #e88b5b);
  box-shadow: 0 5px 14px rgba(212, 95, 58, 0.35);
  cursor: pointer;
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin: 1rem 0 0;
  padding: 0.95rem 1rem;
  border-radius: var(--radius-md);
  background: rgba(31, 36, 48, 0.04);
  font-weight: 600;
}

.toggle-row input {
  width: 1rem;
  height: 1rem;
}

.preset-block {
  margin-top: 1.25rem;
  padding-top: 1.15rem;
  border-top: 1px solid rgba(31, 36, 48, 0.08);
}

.preset-grid {
  display: grid;
  gap: 0.7rem;
}

.preset-card {
  display: grid;
  gap: 0.28rem;
  padding: 0.95rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(31, 36, 48, 0.09);
  background: var(--panel-strong);
  text-align: left;
  color: var(--ink);
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

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

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

.preset-card:hover,
.preset-card:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 14px 24px rgba(44, 39, 33, 0.12);
  border-color: rgba(31, 36, 48, 0.18);
}

.metrics-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.metric-card {
  display: grid;
  gap: 0.28rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid rgba(31, 36, 48, 0.08);
}

.metric-card.is-highlight {
  background:
    linear-gradient(180deg, rgba(212, 95, 58, 0.12), rgba(255, 255, 255, 0.72)),
    rgba(255, 255, 255, 0.6);
  border-color: rgba(212, 95, 58, 0.24);
}

.metric-card.is-load-card {
  background:
    linear-gradient(180deg, rgba(44, 110, 166, 0.12), rgba(255, 255, 255, 0.72)),
    rgba(255, 255, 255, 0.6);
  border-color: rgba(44, 110, 166, 0.24);
}

.metric-value {
  margin: 0.35rem 0;
  font-size: clamp(1.45rem, 2vw, 2rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
}

.metric-copy {
  margin: 0;
  font-size: 0.92rem;
}

.chart-panel canvas {
  width: 100%;
  display: block;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.46), rgba(255, 255, 255, 0.16)),
    radial-gradient(circle at top left, rgba(27, 133, 124, 0.08), transparent 35%);
  border: 1px solid rgba(31, 36, 48, 0.08);
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  margin-top: 0.85rem;
}

.legend-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--muted);
}

.legend-swatch {
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 999px;
  display: inline-block;
}

.legend-swatch.current {
  background: var(--accent);
}

.legend-swatch.focused {
  background: var(--teal);
}

.legend-swatch.danger {
  background: rgba(180, 61, 49, 0.3);
  border: 1px solid rgba(180, 61, 49, 0.52);
}

.serial-bar {
  display: flex;
  overflow: hidden;
  border-radius: 999px;
  height: 1.2rem;
  background: rgba(31, 36, 48, 0.06);
}

.serial-segment {
  height: 100%;
  min-width: 0;
}

.legend-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
  margin-top: 1rem;
}

.legend-item {
  display: grid;
  gap: 0.2rem;
  padding: 0.85rem 0.95rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(31, 36, 48, 0.07);
}

.legend-item strong {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.98rem;
}

.legend-dot {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 999px;
}

.legend-value {
  color: var(--clay);
  font-weight: 700;
}

.diagnosis-copy {
  margin: 0;
  font-size: 1rem;
}

.footer-note {
  margin-top: 1rem;
  padding: 0 0.2rem;
  font-size: 0.96rem;
}

.is-hidden {
  display: none;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 1240px) {
  .workspace {
    grid-template-columns: minmax(320px, 390px) minmax(0, 1fr);
  }

  .output-column {
    grid-column: 1 / -1;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .metrics-panel {
    grid-column: 1 / -1;
  }
}

@media (max-width: 1080px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .output-column {
    grid-column: auto;
    grid-template-columns: 1fr;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(100% - 1rem, 100%);
    padding-top: 0.75rem;
  }

  .hero {
    flex-direction: column;
    align-items: start;
  }

  .hero-meta {
    justify-items: start;
  }

  .metrics-grid,
  .legend-list {
    grid-template-columns: 1fr;
  }

  .control-panel,
  .metrics-panel,
  .chart-panel,
  .breakdown-panel,
  .diagnosis-panel {
    padding: 1.05rem;
  }
}