:root {
  --bg: #f8faf9;
  --panel: #ffffff;
  --ink: #111827;
  --muted: #667085;
  --line: #e5e7eb;
  --green: #059669;
  --green-dark: #047857;
  --amber: #b45309;
  --blue: #2563eb;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 30px clamp(18px, 4vw, 56px) 22px;
  background: #ffffff;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--green-dark);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 900px;
  margin-bottom: 10px;
  font-size: 40px;
  line-height: 1.08;
}

h2 {
  margin-bottom: 10px;
  font-size: 19px;
}

.subtitle {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.5;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 12px;
  min-width: 280px;
  align-self: end;
}

.hero-stats div,
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: var(--shadow);
}

.hero-stats div {
  padding: 16px;
}

.hero-stats span {
  display: block;
  font-size: 24px;
  font-weight: 800;
}

.hero-stats small {
  color: var(--muted);
}

main {
  padding: 20px clamp(18px, 4vw, 56px) 40px;
}

.grid {
  display: grid;
  gap: 16px;
}

.overview-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.panel {
  padding: 16px;
}

.panel p,
.panel li {
  color: var(--muted);
  line-height: 1.5;
}

.panel ul {
  margin: 0;
  padding-left: 18px;
}

.map-section {
  margin: 22px 0;
}

.workflow-section,
.visual-section {
  margin: 22px 0;
}

.workflow-steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin: 12px 0 16px;
}

.control-grid,
.summary-strip {
  display: grid;
  gap: 10px;
  margin: 12px 0;
}

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

.control-grid label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.control-grid input,
.control-grid select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  color: var(--ink);
  font: inherit;
  padding: 10px 12px;
}

.summary-strip {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.summary-strip div {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
}

.summary-strip span {
  display: block;
  font-size: 18px;
  font-weight: 800;
}

.summary-strip small {
  color: var(--muted);
}

.step-card {
  min-height: 132px;
  padding: 13px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: var(--shadow);
}

.step-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-bottom: 10px;
  border-radius: 50%;
  background: #f1f5f9;
  color: var(--green-dark);
  font-weight: 800;
}

.step-card h3 {
  margin: 0 0 8px;
  font-size: 15px;
}

.step-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.4;
}

.step-card.active {
  border-color: var(--blue);
  box-shadow: inset 0 0 0 1px var(--blue), var(--shadow);
}

.step-card.done {
  border-color: #a7f3d0;
  background: #f8fffb;
}

.step-card.done span {
  background: var(--green);
  color: #ffffff;
}

.step-card.error {
  border-color: #e0a4a4;
  background: #fff8f8;
}

.workflow-output-grid {
  align-items: stretch;
}

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

.visual-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.visual-card h3 {
  margin: 0;
  padding: 14px 14px 8px;
  font-size: 16px;
}

.visual-card img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: #f1f5f9;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.visual-card img.missing {
  display: none;
}

.visual-card p {
  min-height: 54px;
  margin: 0;
  padding: 12px 14px 14px;
  color: var(--muted);
  line-height: 1.4;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.section-heading p {
  margin-bottom: 0;
  color: var(--muted);
}

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

button {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  padding: 10px 14px;
}

button:hover {
  border-color: var(--green);
}

button.primary {
  background: var(--green);
  border-color: var(--green);
  color: #ffffff;
}

.status {
  min-height: 42px;
  margin-bottom: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  color: var(--muted);
}

.status.error {
  border-color: #e0a4a4;
  color: #8a1c1c;
}

.status.ready {
  border-color: #8bc79d;
  color: var(--green-dark);
}

#map,
#mergedMap {
  width: 100%;
  height: min(62vh, 660px);
  min-height: 480px;
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.map-fallback {
  display: grid;
  min-height: 520px;
  place-items: center;
  padding: 24px;
  color: var(--muted);
  text-align: center;
  background: #f1f5f9;
}

.results-empty {
  color: var(--muted);
}

.route-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.route-card {
  border: 1px solid var(--line);
  border-left: 5px solid var(--route-color, var(--blue));
  border-radius: 6px;
  padding: 14px;
  background: #ffffff;
}

.route-card.recommended {
  border-color: var(--line);
  border-left-color: var(--route-color, var(--green));
  box-shadow: inset 0 0 0 1px rgba(5, 150, 105, 0.22);
}

.route-card.selected {
  background: #f8fffb;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08), inset 0 0 0 1px rgba(5, 150, 105, 0.28);
}

.route-card h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 0;
  font-size: 16px;
}

.route-card p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.4;
}

.route-focus-btn {
  margin-top: 12px;
  padding: 8px 10px;
  font-size: 13px;
}

.final-panel {
  margin-top: 18px;
  border-color: #a7f3d0;
}

.optimized-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(360px, 1.1fr);
  gap: 18px;
  align-items: stretch;
}

.optimized-card {
  display: grid;
  grid-template-columns: minmax(180px, 0.7fr) minmax(280px, 1fr);
  gap: 18px;
  align-items: start;
}

.score-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 96px;
  min-height: 96px;
  border-radius: 50%;
  background: var(--route-color, var(--green));
  color: #fff;
  font-size: 28px;
  font-weight: 800;
}

.route-swatch {
  display: inline-block;
  width: 12px;
  height: 12px;
  flex: 0 0 12px;
  border-radius: 50%;
  background: var(--route-color, var(--green));
}

.selection-basis {
  margin-bottom: 14px;
  color: var(--muted);
}

.route-animation-panel {
  min-height: 300px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfcfd;
}

.route-animation-panel h3 {
  margin: 0 0 10px;
  font-size: 16px;
}

.route-animation,
.route-animation-empty {
  display: grid;
  min-height: 240px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  color: var(--muted);
  overflow: hidden;
}

.route-animation svg {
  width: 100%;
  height: 100%;
  min-height: 240px;
}

.route-shadow,
.route-path {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.route-shadow {
  stroke: #e5e7eb;
  stroke-width: 14;
}

.route-path {
  stroke-width: 6;
}

.merged-animated-path {
  stroke-dasharray: 12 10;
  animation: mergedRoutePulse 1.2s ease-in-out infinite;
}

@keyframes mergedRoutePulse {
  0%,
  100% {
    stroke-width: 6;
    opacity: 0.72;
  }
  50% {
    stroke-width: 10;
    opacity: 1;
  }
}

.route-start,
.route-end {
  fill: #ffffff;
  stroke: var(--ink);
  stroke-width: 2;
}

.runner-marker span {
  display: block;
  width: 18px;
  height: 18px;
  border: 3px solid #ffffff;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(5, 150, 105, 0.25), 0 0 18px rgba(5, 150, 105, 0.65);
}

.warning {
  color: var(--amber);
  font-weight: 700;
}

.metric {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 5px 0;
  border-bottom: 1px solid #edf1ed;
  color: var(--muted);
}

.metric strong {
  color: var(--ink);
}

code {
  background: #f1f5f9;
  border-radius: 4px;
  padding: 2px 5px;
}

@media (max-width: 1000px) {
  .hero,
  .section-heading {
    display: block;
  }

  .hero-stats,
  .overview-grid,
  .control-grid,
  .summary-strip,
  .workflow-steps,
  .visual-grid,
  .optimized-layout,
  .optimized-card,
  .route-list {
    grid-template-columns: 1fr;
    margin-top: 16px;
  }

  h1 {
    font-size: 32px;
  }

  .actions {
    margin-top: 12px;
  }
}