:root {
  color-scheme: light;
  --ink: #172733;
  --muted: #62727d;
  --navy: #12324a;
  --blue: #176b91;
  --blue-dark: #0f5373;
  --sky: #e7f4f8;
  --line: #d8e2e7;
  --paper: #ffffff;
  --canvas: #f3f6f7;
  --success: #226746;
  --success-bg: #e8f6ee;
  --warning: #80520b;
  --warning-bg: #fff6db;
  --danger: #982d2d;
  --danger-bg: #fdecec;
  --shadow: 0 10px 30px rgba(24, 51, 67, 0.08);
  font-family: Inter, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  line-height: 1.6;
}

button,
select,
input { font: inherit; }

button:focus-visible,
select:focus-visible,
.drop-zone:focus-visible {
  outline: 3px solid rgba(23, 107, 145, 0.35);
  outline-offset: 3px;
}

.site-header {
  color: #fff;
  background:
    radial-gradient(circle at 82% 20%, rgba(63, 163, 182, 0.35), transparent 30%),
    linear-gradient(120deg, #102f47, #174a62);
}

.header-inner,
.app-shell {
  width: min(1440px, calc(100% - 40px));
  margin: 0 auto;
}

.header-inner {
  min-height: 185px;
  padding: 36px 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

h1,
h2,
h3,
p { margin-top: 0; }

h1 { margin-bottom: 6px; font-size: clamp(1.8rem, 4vw, 2.65rem); line-height: 1.25; }
h2 { margin-bottom: 0; font-size: 1.25rem; line-height: 1.4; }
h3 { margin: 0 0 12px; font-size: 1rem; }

.eyebrow,
.step-label {
  margin-bottom: 5px;
  color: #65bfd2;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.13em;
}

.lead { margin-bottom: 0; color: #d4e5ec; }

.app-shell { padding: 30px 0 60px; }

.panel {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.upload-panel { padding: 26px; }

.section-heading,
.map-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 20px;
}

.conversion-note,
.stats-unit,
.display-count {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

code { color: var(--blue-dark); }

.drop-zone {
  padding: 30px 20px;
  border: 2px dashed #9bbac8;
  border-radius: 13px;
  background: #f7fbfc;
  text-align: center;
  cursor: pointer;
  transition: 160ms ease;
}

.drop-zone:hover,
.drop-zone.is-dragging {
  border-color: var(--blue);
  background: var(--sky);
  transform: translateY(-1px);
}

.drop-zone p { margin-bottom: 7px; }
.drop-icon { color: var(--blue); font-size: 2rem; line-height: 1; }
.file-support { margin-top: 12px; color: var(--muted); font-size: 0.8rem; }

.button {
  min-height: 42px;
  padding: 9px 17px;
  border: 1px solid transparent;
  border-radius: 9px;
  font-weight: 720;
  cursor: pointer;
}

.button-primary { color: #fff; background: var(--blue); }
.button-primary:hover { background: var(--blue-dark); }
.button-secondary { color: var(--blue-dark); border-color: #a8c2cf; background: #fff; }
.button-secondary:hover { background: var(--sky); }
.button:disabled { opacity: 0.45; cursor: not-allowed; }

.privacy-note {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  padding: 13px 16px;
  border-radius: 10px;
  color: #34505d;
  background: #edf6f2;
  font-size: 0.86rem;
}

.privacy-note p { margin: 0; }

.message-panel {
  margin-top: 18px;
  padding: 13px 17px;
  border: 1px solid;
  border-radius: 10px;
}

.message-info { color: var(--blue-dark); border-color: #b8dbe7; background: var(--sky); }
.message-success { color: var(--success); border-color: #bddfc9; background: var(--success-bg); }
.message-error { color: var(--danger); border-color: #efc1c1; background: var(--danger-bg); }

.workspace {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.controls-panel { align-self: start; padding: 23px; }
.step-heading { margin-bottom: 18px; }

.track-info {
  margin: 0 0 22px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.track-info div,
.cleaning-report dl div {
  display: flex;
  justify-content: space-between;
  gap: 14px;
}

.track-info dt,
.cleaning-report dt { color: var(--muted); }
.track-info dd { overflow-wrap: anywhere; text-align: right; }
.track-info dd,
.cleaning-report dd { margin: 0; font-weight: 650; }

.field-group { margin-bottom: 17px; }
.field-group label { display: block; margin-bottom: 6px; font-size: 0.88rem; font-weight: 700; }
.field-group select {
  width: 100%;
  min-height: 43px;
  padding: 7px 10px;
  border: 1px solid #b8c7ce;
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
}

.check-row { display: flex; align-items: center; gap: 9px; font-size: 0.9rem; cursor: pointer; }
.check-row input { width: 18px; height: 18px; accent-color: var(--blue); }

.cleaning-report {
  margin-top: 22px;
  padding: 14px;
  border-left: 4px solid #64a889;
  border-radius: 7px;
  background: #eff8f4;
  font-size: 0.8rem;
}

.cleaning-report.has-exclusions { border-left-color: #daa22f; background: var(--warning-bg); }
.cleaning-report dl { margin: 8px 0 0; }

.export-block { margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line); }
.button-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

.results-column { display: grid; gap: 20px; min-width: 0; }
.map-panel,
.statistics-panel { min-width: 0; padding: 20px; }

#map {
  z-index: 0;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  min-height: 560px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #dce8ec;
}

.map-status { margin: 11px 2px 0; color: var(--muted); font-size: 0.82rem; }

.dose-legend {
  min-width: 135px;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 2px 12px rgba(10, 35, 48, 0.18);
  color: var(--ink);
  font-size: 11px;
}

.dose-legend strong { display: block; margin-bottom: 5px; font-size: 11px; }
.dose-legend > span { display: flex; align-items: center; gap: 6px; line-height: 1.7; }
.dose-legend > span i { display: inline-block; width: 18px; height: 8px; border-radius: 2px; }

.continuous-legend {
  display: grid;
  grid-template-columns: 18px minmax(52px, 1fr);
  gap: 8px;
  height: 132px;
  margin: 9px 5px 4px 1px;
}

.dose-gradient-bar {
  border: 1px solid rgba(23, 39, 51, 0.25);
  border-radius: 3px;
  background: linear-gradient(to top, #185adb, #12bde5, #20a65a, #f0cf2f, #f18f1c, #d52b2b);
}

.dose-gradient-ticks { position: relative; }
.dose-gradient-ticks span {
  position: absolute;
  left: 0;
  display: block;
  line-height: 1;
  white-space: nowrap;
  transform: translateY(50%);
}

.measurement-popup table { border-collapse: collapse; font-size: 12px; }
.measurement-popup th,
.measurement-popup td { padding: 3px 6px; border-bottom: 1px solid #e3e8eb; text-align: left; }
.measurement-popup th { color: #52636e; font-weight: 600; }

.statistics-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
}

.statistics-grid div {
  min-width: 0;
  padding: 13px;
  border: 1px solid #e1e8eb;
  border-radius: 9px;
  background: #fafcfc;
}

.statistics-grid div.wide { grid-column: span 3; }
.statistics-grid dt { color: var(--muted); font-size: 0.75rem; }
.statistics-grid dd { margin: 2px 0 0; font-weight: 760; overflow-wrap: anywhere; }

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

footer { padding: 22px; color: var(--muted); text-align: center; font-size: 0.8rem; }
footer p { margin: 0; }
noscript { display: block; padding: 20px; color: var(--danger); text-align: center; }

@media (max-width: 1050px) {
  .workspace { grid-template-columns: 260px minmax(0, 1fr); }
  .statistics-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .header-inner,
  .app-shell { width: min(100% - 24px, 1440px); }
  .header-inner { min-height: 155px; padding: 27px 0; }
  .app-shell { padding-top: 16px; }
  .upload-panel,
  .controls-panel,
  .map-panel,
  .statistics-panel { padding: 17px; }
  .section-heading { display: block; }
  .conversion-note { margin-top: 8px; }
  .workspace { grid-template-columns: minmax(0, 1fr); }
  .results-column,
  .map-panel,
  .statistics-panel { width: 100%; max-width: 100%; }
  .controls-panel { position: static; }
  #map { min-height: 460px; }
  .statistics-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .statistics-grid div.wide { grid-column: span 2; }
  .leaflet-control-layers-expanded { max-width: 210px; font-size: 11px; }
}

@media (max-width: 430px) {
  #map { min-height: 390px; }
  .map-heading { display: block; }
  .display-count,
  .stats-unit { display: block; margin-top: 5px; }
  .statistics-grid { grid-template-columns: 1fr; }
  .statistics-grid div.wide { grid-column: span 1; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}