:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --red: #ef4444;
  --background: #f1f5f9;
  --card: #ffffff;
  --border: #dbe3ef;
  --text: #0f172a;
  --muted: #64748b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: var(--background);
  color: var(--text);
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px;
}

.header {
  margin-bottom: 24px;
}

.header h1 {
  margin: 0;
  font-size: 36px;
  letter-spacing: -0.04em;
}

.header p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 16px;
}

.app {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 24px;
  align-items: start;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.graph-card {
  padding: 22px;
}

.side-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.panel-card {
  padding: 18px;
}

.panel-title {
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 700;
}

.panel-subtitle {
  margin: -6px 0 14px;
  font-size: 13px;
  color: var(--muted);
}

.graph-layout {
  display: grid;
  grid-template-columns: 80px 500px;
  grid-template-rows: 48px 500px 48px;
  gap: 10px;
  align-items: center;
  justify-items: center;
  justify-content: center;
}

.top-label {
  grid-column: 2;
  grid-row: 1;
}

.left-label {
  grid-column: 1;
  grid-row: 2;
  transform: rotate(-90deg);
  width: 180px;
}

.bottom-label {
  grid-column: 2;
  grid-row: 3;
}

.graph-box {
  grid-column: 2;
  grid-row: 2;
  padding: 10px;
  border-radius: 16px;
  background: #f8fafc;
  border: 1px solid var(--border);
}

svg {
  display: block;
  background: white;
  border-radius: 12px;
  border: 1px solid var(--border);
}

input,
textarea,
button {
  font-family: inherit;
}

.label-input {
  padding: 8px 12px;
  text-align: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-weight: 700;
  color: var(--blue-dark);
  background: #eff6ff;
  outline: none;
}

.top-label input,
.bottom-label input {
  width: 270px;
}

.notes-card textarea {
  width: 100%;
  min-height: 120px;
  resize: vertical;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #f8fafc;
  color: var(--text);
  font-size: 14px;
  outline: none;
}

table {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 12px;
}

th {
  background: #eff6ff;
  color: var(--blue-dark);
  font-size: 13px;
  text-transform: uppercase;
  padding: 10px;
}

td {
  border-top: 1px solid var(--border);
  padding: 8px;
  text-align: center;
  background: white;
}

td input {
  width: 76px;
  padding: 7px;
  text-align: center;
  border: 1px solid transparent;
  border-radius: 8px;
  background: #f8fafc;
  color: var(--text);
  outline: none;
}

td input:focus,
.field input:focus,
.label-input:focus,
.notes-card textarea:focus {
  border-color: var(--blue);
  background: white;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.scale-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.field label {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
}

.field input {
  width: 100%;
  padding: 9px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #f8fafc;
  outline: none;
}

.button-row {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

button {
  width: 100%;
  padding: 10px 12px;
  border: none;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: 0.15s ease;
}

.primary-button {
  background: var(--blue);
  color: white;
}

.secondary-button {
  background: #e2e8f0;
  color: var(--text);
}

.primary-button:hover {
  background: var(--blue-dark);
}

.secondary-button:hover {
  background: #cbd5e1;
}

.legend {
  display: flex;
  gap: 14px;
  margin-top: 14px;
  font-size: 13px;
  color: var(--muted);
  justify-content: center;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.legend-line {
  width: 22px;
  height: 3px;
  background: var(--blue);
  border-radius: 999px;
}

.legend-dot {
  width: 10px;
  height: 10px;
  background: var(--red);
  border-radius: 50%;
}

.draggable-point {
  cursor: grab;
}

.draggable-point:active {
  cursor: grabbing;
}

@media (max-width: 1000px) {
  .app {
    grid-template-columns: 1fr;
  }

  .graph-card {
    overflow-x: auto;
  }
}