:root {
  --ink: #1d1a12;
  --muted: #5b5344;
  --accent: #d8722a;
  --accent-dark: #8a3d0a;
  --paper: #f3ede3;
  --panel: #fbf8f2;
  --shadow: 0 18px 38px rgba(22, 18, 12, 0.18);
  --radius: 20px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Palatino Linotype", "Book Antiqua", serif;
  color: var(--ink);
  background: radial-gradient(circle at top, #fff5e6 0%, #efe5d6 45%, #dccbb2 100%);
}

.page {
  padding: 32px clamp(20px, 6vw, 72px) 60px;
}

.hero {
  max-width: 720px;
  margin-bottom: 32px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.35em;
  font-size: 0.7rem;
  color: var(--muted);
  margin-bottom: 8px;
}

h1 {
  font-size: clamp(2.4rem, 4vw, 3.5rem);
  margin: 0 0 12px;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  align-items: start;
}

.panel {
  background: var(--panel);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(138, 61, 10, 0.08);
  position: relative;
  overflow: hidden;
}

.panel::after {
  content: "";
  position: absolute;
  inset: auto -40px -60px auto;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(216, 114, 42, 0.12);
  filter: blur(2px);
}

label {
  font-weight: 600;
  display: block;
  margin-bottom: 10px;
}

.file-block {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

input[type="file"] {
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--muted);
}

select {
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(29, 26, 18, 0.15);
  padding: 10px 12px;
  font-family: "Courier New", ui-monospace, monospace;
  font-size: 0.9rem;
  background: #fffdf9;
  color: var(--ink);
}

input[type="number"] {
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(29, 26, 18, 0.15);
  padding: 10px 12px;
  font-family: "Courier New", ui-monospace, monospace;
  font-size: 0.9rem;
  background: #fffdf9;
  color: var(--ink);
}

input[type="text"] {
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(29, 26, 18, 0.15);
  padding: 10px 12px;
  font-family: "Courier New", ui-monospace, monospace;
  font-size: 0.9rem;
  background: #fffdf9;
  color: var(--ink);
}

.radio-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  font-size: 0.85rem;
  color: var(--muted);
}

.radio-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.row-input {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}

.power-summary {
  margin-top: 10px;
  padding: 12px;
  border-radius: 12px;
  background: #fffaf2;
  border: 1px solid rgba(29, 26, 18, 0.12);
}

.power-summary h4 {
  margin: 0 0 6px;
  font-size: 0.95rem;
}

.power-summary p {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 0.85rem;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  background: #7b6a52;
}

.badge.warning {
  background: #b2521a;
}

.badge.ok {
  background: #2e7d5b;
}

.range-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: 0.85rem;
}

.range-actions {
  margin-top: 8px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

input[type="file"]::file-selector-button {
  border: none;
  background: #efe5d7;
  color: var(--accent-dark);
  padding: 8px 14px;
  border-radius: 999px;
  margin-right: 12px;
  cursor: pointer;
  transition: background 200ms ease, transform 200ms ease;
}

input[type="file"]::file-selector-button:hover {
  background: #e6d7c4;
  transform: translateY(-1px);
}

.file-helper {
  margin: 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--muted);
}

.checkbox-row input {
  accent-color: var(--accent);
}

textarea {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(29, 26, 18, 0.15);
  padding: 14px;
  font-family: "Courier New", ui-monospace, monospace;
  font-size: 0.95rem;
  background: #fffdf9;
  color: var(--ink);
  resize: vertical;
}

textarea.has-data {
  border-color: rgba(29, 26, 18, 0.35);
  background: #fff5e6;
  box-shadow: inset 0 0 0 2px rgba(216, 114, 42, 0.08);
}

.actions {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.summary-options {
  margin-top: 10px;
}

.summary-panel {
  position: fixed;
  inset: 0;
  background: rgba(246, 239, 230, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 20;
}

.summary-panel[hidden] {
  display: none !important;
}

.summary-card {
  width: min(720px, 100%);
  background: #fffaf1;
  border: 1px solid #d9c9b0;
  border-radius: 18px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  padding: 20px 20px 16px;
}

.summary-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.summary-header h3 {
  margin: 0;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.summary-actions {
  display: flex;
  gap: 10px;
}

#summaryOutput {
  width: 100%;
  min-height: 220px;
  border-radius: 12px;
  border: 1px solid #d9c9b0;
  padding: 12px;
  background: #fef6ea;
  font-family: "Courier New", ui-monospace, monospace;
  font-size: 0.9rem;
  line-height: 1.4;
  color: #1d1a12;
  resize: vertical;
}

@media (max-width: 720px) {
  .summary-card {
    padding: 16px;
  }

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

.data-table {
  margin-top: 16px;
  border: 1px solid rgba(29, 26, 18, 0.12);
  border-radius: 16px;
  background: #fffaf2;
  padding: 12px;
}

.data-plot {
  margin-top: 16px;
  border: 1px solid rgba(29, 26, 18, 0.12);
  border-radius: 16px;
  background: #fffaf2;
  padding: 12px;
}

.plot-selector {
  display: flex;
  align-items: center;
  gap: 8px;
}

.power-legend {
  margin-top: 8px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--muted);
}

.plot-title {
  margin: 10px 0 0;
  font-size: 0.95rem;
  color: var(--muted);
}

.plot-selector label {
  font-weight: 600;
  color: var(--muted);
}

.plot-selector select {
  border-radius: 999px;
  border: 1px solid rgba(29, 26, 18, 0.15);
  background: #fffdf9;
  padding: 6px 12px;
  font-size: 0.9rem;
  color: var(--ink);
}

#dataPlotStatus {
  margin: 8px 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.table-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.table-header h4 {
  margin: 0;
  font-size: 1rem;
}

#dataTableStatus {
  margin: 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.table-scroll {
  max-height: 240px;
  overflow: auto;
  margin-top: 8px;
  border-radius: 12px;
  background: #fffdf9;
}

.data-table table {
  width: 100%;
  border-collapse: collapse;
  font-family: "Courier New", ui-monospace, monospace;
  font-size: 0.85rem;
}

.data-table thead th {
  position: sticky;
  top: 0;
  background: #f7ebda;
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid rgba(29, 26, 18, 0.12);
}

.data-table tbody td {
  padding: 6px 10px;
  border-bottom: 1px solid rgba(29, 26, 18, 0.08);
}

.data-table tbody tr:nth-child(even) {
  background: rgba(216, 114, 42, 0.06);
}

button {
  border: none;
  background: var(--accent);
  color: #fff;
  padding: 12px 18px;
  border-radius: 999px;
  font-size: 0.95rem;
  cursor: pointer;
  box-shadow: 0 12px 20px rgba(216, 114, 42, 0.25);
  transition: transform 200ms ease, box-shadow 200ms ease;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 24px rgba(216, 114, 42, 0.3);
}

button.ghost {
  background: #f0e5d7;
  color: var(--accent-dark);
  box-shadow: none;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.feedback {
  min-height: 24px;
  margin: 16px 0 4px;
  color: var(--accent-dark);
  font-weight: 600;
}

.status {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.85rem;
}

.marker {
  font-weight: 700;
  color: var(--accent-dark);
}

.notes {
  display: grid;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--muted);
}

.chart-panel {
  display: grid;
  gap: 18px;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
}

.chart-header h2 {
  margin: 0;
  font-size: 1.3rem;
}

.chart-header p {
  margin: 4px 0 0;
  color: var(--muted);
}

.chart-subhead h3 {
  margin: 0 0 6px;
  font-size: 1.1rem;
}

.chart-subhead p {
  margin: 0;
  color: var(--muted);
}

.modulus {
  font-weight: 600;
  color: var(--ink);
}

.legend {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--muted);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.legend .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px rgba(216, 114, 42, 0.6);
}

.legend .dot.true {
  background: #1d1a12;
  box-shadow: none;
}


.chart-shell {
  background: #f6efe6;
  border-radius: 18px;
  padding: 16px;
  border: 1px solid rgba(29, 26, 18, 0.12);
}

svg {
  width: 100%;
  height: auto;
  display: block;
}

.chart-bg {
  fill: url(#gridGlow);
  rx: 16px;
}

.axis-line {
  stroke: rgba(29, 26, 18, 0.45);
  stroke-width: 1.5;
}

.tick {
  stroke: rgba(29, 26, 18, 0.18);
  stroke-width: 1;
}

.tick-label {
  font-size: 11px;
  fill: rgba(29, 26, 18, 0.55);
}

.point {
  fill: #fff5e6;
  stroke: var(--accent);
  stroke-width: 2;
}

.point.post-uts {
  fill: #2e6bd9;
  stroke: #124aa8;
}

.yield-point {
  fill: var(--accent);
  stroke: #fff;
  stroke-width: 1.5;
  opacity: 0;
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes draw {
  from {
    stroke-dashoffset: 1000;
  }
  to {
    stroke-dashoffset: 0;
  }
}

#curve {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: draw 1.6s ease forwards;
}

.panel,
.hero {
  animation: reveal 800ms ease both;
}

@media (max-width: 720px) {
  .chart-header {
    flex-direction: column;
    align-items: flex-start;
  }
}