:root {
  --color-red-dark: #780000;
  --color-red-bright: #c1121f;
  --color-beige: #fdf0d5;
  --color-blue-deep: #003049;
  --color-blue-gray: #669bbc;
  --color-white: #ffffff;
  --color-text: #1f2933;
  --border: rgba(0, 48, 73, 0.12);
  --shadow: 0 8px 24px rgba(0, 48, 73, 0.08);
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--color-text);
  background: linear-gradient(180deg, var(--color-beige) 0%, #ffffff 72%);
  line-height: 1.6;
}

.app-shell {
  width: min(94%, 1120px);
  margin: 0 auto;
  padding: 2rem 0 3rem;
}

.app-header {
  padding: 2rem 0 1rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--color-blue-deep);
  text-decoration-thickness: 2px;
  font-weight: 600;
}

.kicker {
  margin: 0 0 0.25rem;
  color: var(--color-red-bright);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 700;
  font-size: 0.82rem;
}

h1, h2, h3 {
  color: var(--color-blue-deep);
  line-height: 1.2;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.35rem);
}

h2 {
  margin: 0 0 0.8rem;
}

h3 {
  margin-top: 1.2rem;
}

.subtitle {
  max-width: 760px;
  margin-top: 0.75rem;
  color: var(--color-red-dark);
  font-weight: 600;
  font-size: 1.05rem;
}

.panel {
  background: var(--color-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem;
  box-shadow: var(--shadow);
  margin-top: 1rem;
}

.control-grid,
.settings-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1rem;
}

fieldset {
  grid-column: span 6;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.85rem;
  margin: 0;
}

legend {
  padding: 0 0.35rem;
  font-weight: 700;
  color: var(--color-blue-deep);
}

.radio-card {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem;
  border-radius: 10px;
  cursor: pointer;
}

.radio-card:hover {
  background: rgba(102, 155, 188, 0.12);
}

.label {
  display: block;
  font-weight: 700;
  color: var(--color-blue-deep);
  margin-bottom: 0.35rem;
}

.input,
select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.72rem 0.8rem;
  font: inherit;
  background: #fff;
  color: var(--color-text);
}

.input:focus,
select:focus {
  outline: 3px solid rgba(102, 155, 188, 0.28);
  border-color: var(--color-blue-gray);
}

.variable-list {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 0.6rem;
  margin-top: 0.9rem;
}

.variable-option {
  grid-column: span 4;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.65rem;
  display: flex;
  gap: 0.55rem;
  align-items: flex-start;
  background: #fff;
}

.variable-option.disabled {
  opacity: 0.65;
}

.variable-option code {
  color: var(--color-red-dark);
  font-weight: 700;
}

.variable-option small {
  display: block;
  color: #52616f;
}

.evidence-toggle {
  margin-top: 1rem;
  padding: 0.8rem;
  border: 1px solid rgba(193, 18, 31, 0.2);
  border-radius: 12px;
  background: rgba(253, 240, 213, 0.42);
}

.evidence-toggle label {
  display: flex;
  gap: 0.55rem;
  align-items: center;
  font-weight: 700;
  color: var(--color-blue-deep);
}

.evidence-toggle p {
  margin: 0.35rem 0 0;
  color: #52616f;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

th, td {
  border-bottom: 1px solid var(--border);
  padding: 0.7rem;
  text-align: left;
  vertical-align: middle;
}

th {
  color: var(--color-blue-deep);
  background: rgba(102, 155, 188, 0.12);
}

td code {
  color: var(--color-red-dark);
  font-weight: 700;
}

.table-input {
  width: 110px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.45rem;
  font: inherit;
}

.table-select {
  min-width: 175px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.45rem;
  font: inherit;
}

.empty-row td {
  text-align: center;
  color: #52616f;
}

.settings-grid > div {
  grid-column: span 4;
}

.hint {
  margin: 0.35rem 0 0;
  color: #52616f;
  font-size: 0.92rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.2rem;
}

.btn {
  border: 0;
  cursor: pointer;
  text-decoration: none;
  padding: 0.75rem 1.1rem;
  border-radius: 10px;
  font-weight: 700;
  transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.btn-primary {
  background: var(--color-blue-deep);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--color-blue-deep);
  border: 1px solid var(--color-blue-deep);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.btn:not(:disabled):hover,
.btn:not(:disabled):focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.message {
  margin-top: 1rem;
  font-weight: 700;
}

.message.success { color: #0f766e; }
.message.error { color: var(--color-red-bright); }

.hidden {
  display: none;
}

.remove-btn {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--color-red-bright);
  border-radius: 8px;
  padding: 0.35rem 0.55rem;
  cursor: pointer;
  font-weight: 700;
}

.remove-btn:hover {
  background: rgba(193, 18, 31, 0.08);
}

@media (max-width: 860px) {
  fieldset,
  .settings-grid > div,
  .variable-option {
    grid-column: span 12;
  }

  .panel {
    padding: 1rem;
  }
}