:root {
  --bg-light: #f3f4f5;
  --panel-bg: #ffffff;
  --accent-dark: #2f4f4f;
  --accent-mid: #4d8076;
  --accent-light: #d1d9d9;
  --zone-ve: #d95d39;
  --zone-ae: #f07918;
  --zone-ao: #f4a261;
  --zone-a: #e9c46a;
  --zone-x: #8ab17d;
  --text-dark: #1f2a2a;
  --text-muted: #5c6a6a;
  --border-soft: #a0ccc0;
  font-size: 16px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Source Sans 3", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg-light);
  color: var(--text-dark);
}

.tutorial-modal.hidden { display: none; }

.app-header {
  padding: 0.5rem 2rem 0.4rem;
  background: #e3ebe7;
  border-bottom: 1px solid #c7d4cf;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
}

.header-text {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.app-header h1 {
  margin: 0 0 0.1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--accent-dark);
}

.tagline {
  margin: 0;
  max-width: 45rem;
  font-size: 0.95rem;
  line-height: 1.35;
  color: var(--text-muted);
}

.language-switcher {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  position: relative;
}

.language-select {
  padding: 0.4rem 2.2rem 0.4rem 0.9rem;
  border: 1px solid var(--accent-mid);
  border-radius: 999px;
  background: #ffffff;
  color: var(--accent-dark);
  font-size: 0.9rem;
  font-weight: 600;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
}

.language-select:focus-visible {
  outline: none;
  border-color: var(--accent-dark);
  box-shadow: 0 0 0 2px rgba(35, 91, 67, 0.18);
}

.language-switcher::after {
  content: "";
  position: absolute;
  right: 0.95rem;
  top: 50%;
  transform: translateY(-50%);
  border-width: 5px 4px 0 4px;
  border-style: solid;
  border-color: var(--accent-dark) transparent transparent transparent;
  pointer-events: none;
}

@media (max-width: 640px) {
  .app-header {
    flex-direction: column;
    align-items: stretch;
  }

  .language-switcher {
    align-self: flex-start;
  }
}

.app-main {
  display: grid;
  grid-template-columns: minmax(0, 2.8fr) minmax(18rem, 1.2fr);
  gap: 1rem;
  padding: 1.25rem 1.5rem 1.2rem;
  align-items: start;
}

.map-panel {
  position: sticky;
  top: 1.25rem;
  height: calc(100vh - 3rem);
  min-height: 600px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-soft);
  background: var(--panel-bg);
}

#map {
  width: 100%;
  height: 100%;
}

#map {
  width: 100%;
  height: 100%;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.legend-panel {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 12rem;
  max-height: calc(100% - 2rem);
  padding: 0.7rem 0.7rem;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--border-soft);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  z-index: 1000;
}

.legend-panel p {
  margin: 0.2rem 0 0.6rem;
  font-size: 0.76rem;
  color: var(--text-muted);
}

.legend-accordion {
  margin: 0 0 0.75rem;
}

.legend-accordion__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.35rem;
  padding: 0.4rem 0.5rem;
  font-size: 0.9rem;
  color: var(--accent-dark);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}

.legend-accordion__summary::-webkit-details-marker {
  display: none;
}

.legend-accordion__summary::after {
  content: "▾";
  font-size: 0.8rem;
  color: var(--accent-mid);
  transition: transform 0.2s ease;
}

.legend-accordion[open] .legend-accordion__summary::after {
  transform: rotate(180deg);
}

.legend-accordion__content {
  padding: 0 0.5rem 0.5rem;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.92);
}

.layer-toggle-list {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 0.6rem;
}

.layer-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.35rem;
  border: none;
  border-radius: 4px;
  background: transparent;
  font-size: 0.82rem;
  color: var(--accent-dark);
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease;
}

.layer-toggle input {
  accent-color: var(--accent-mid);
  margin: 0;
}

.layer-toggle:hover {
  color: var(--accent-dark);
  background: rgba(202, 210, 197, 0.2);
}

.layer-toggle__swatch {
  width: 1rem;
  height: 1rem;
  border-radius: 0.25rem;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1);
  flex: 0 0 auto;
}

.layer-toggle__swatch--icon {
  box-shadow: none;
  background-position: center;
  background-size: 1rem 1rem;
  background-repeat: no-repeat;
}

.legend-scale {
  border-top: 1px solid var(--border-soft);
  padding-top: 0.7rem;
  margin-top: 0.7rem;
}

.legend-scale h3 {
  margin: 0 0 0.55rem;
  font-size: 0.82rem;
  color: var(--accent-mid);
}

.legend-scale ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.legend-scale li {
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-muted);
}

.legend-swatch {
  display: inline-block;
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 0.25rem;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.legend-shelter {
  background: url("picture/shelter.png") center/16px 16px no-repeat;
  box-shadow: none;
}

.zone-ve { background: var(--zone-ve); }
.zone-ae { background: var(--zone-ae); }
.zone-ao { background: var(--zone-ao); }
.zone-a { background: var(--zone-a); }
.zone-x { background: var(--zone-x); }

.parcel-scale {
  margin-top: 0.6rem;
}

.parcel-gradient {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.parcel-gradient-bar {
  height: 0.75rem;
  border-radius: 0.4rem;
  background: linear-gradient(
    to right,
    #f7fbff,
    #c6dbef,
    #6baed6,
    #3182bd,
    #08519c
  );
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.legend-hint {
  margin: 0.45rem 0 0;
  font-size: 0.7rem;
  color: var(--text-muted);
}

.info-search {
  padding: 0 0.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.parcel-search {
  display: flex;
  gap: 0.35rem;
}

.parcel-search input[type="search"] {
  flex: 1 1 auto;
  padding: 0.45rem 0.6rem;
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  font-size: 0.9rem;
  color: var(--text-dark);
  background: #ffffff;
}

.parcel-search input[type="search"]:focus {
  outline: none;
  border-color: var(--border-soft);
  box-shadow: none;
}

.parcel-search button {
  padding: 0.45rem 0.85rem;
  border: none;
  border-radius: 6px;
  background: var(--accent-mid);
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
}

.parcel-search button:hover,
.parcel-search button:focus-visible {
  background: var(--accent-dark);
}

.search-feedback {
  margin: 0;
  min-height: 0.9rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.search-feedback--error {
  color: #ba3a2a;
}

.info-panel {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-height: calc(100vh - 3rem);
  overflow-y: auto;
  padding-right: 0.4rem;
}

.info-section {
  background: var(--panel-bg);
  border-radius: 8px;
  padding: 1.05rem 1.1rem;
  border: 1px solid var(--border-soft);
}

.calc-note {
  margin-top: 0.6rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.calc-note a {
  color: var(--accent-mid);
  text-decoration: underline;
  cursor: pointer;
}

.tutorial-modal {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.tutorial-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
}

.tutorial-modal__dialog {
  position: relative;
  z-index: 1;
  max-width: 420px;
  width: 100%;
  padding: 1.6rem 1.8rem 1.4rem;
  background: #ffffff;
  border-radius: 14px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.18);
  border: 1px solid rgba(121, 165, 148, 0.35);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.tutorial-modal__dialog h2 {
  margin: 0;
  font-size: 1.15rem;
  color: var(--accent-dark);
}

.tutorial-modal__language {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.tutorial-modal__language-label {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}

.tutorial-modal__language-controls {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tutorial-modal__language-button {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--accent-mid);
  background: #ffffff;
  color: var(--accent-dark);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.tutorial-modal__language-button.is-active {
  background: var(--accent-dark);
  color: #ffffff;
  border-color: var(--accent-dark);
}

.tutorial-modal__body {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--text-muted);
}

.tutorial-modal__action {
  align-self: flex-end;
  padding: 0.45rem 1.1rem;
  border: none;
  border-radius: 6px;
  background: var(--accent-mid);
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.tutorial-modal__action:hover,
.tutorial-modal__action:focus-visible {
  background: var(--accent-dark);
}

.tutorial-modal__action:focus {
  outline: none;
  box-shadow: none;
}

/* Calculation Modal */
.calc-modal.hidden { display: none; }
.calc-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
}
.calc-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.35);
}
.calc-modal__dialog {
  position: relative;
  max-width: 680px;
  margin: 8vh auto;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
  border: 1px solid var(--border-soft);
  display: flex;
  flex-direction: column;
}
.calc-modal__header {
  padding: 1rem 1.2rem 0.4rem;
  border-bottom: 1px solid var(--border-soft);
}
.calc-modal__header h3 { margin: 0; font-size: 1.05rem; color: var(--accent-dark); }
.calc-modal__body { padding: 0.4rem 1.2rem 1rem; color: var(--text-dark); }
.calc-modal__body ul { margin: 0.5rem 0 0.5rem 1.2rem; }
.calc-modal__footer {
  padding: 0 1.2rem 1.1rem;
  display: flex;
  justify-content: flex-end;
}
.calc-modal__action {
  padding: 0.45rem 1.1rem;
  border: none;
  border-radius: 6px;
  background: var(--accent-mid);
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}
.calc-modal__action:hover,
.calc-modal__action:focus-visible {
  background: var(--accent-dark);
}

.calc-modal__action:focus {
  outline: none;
  box-shadow: none;
}
.calc-note a { display: inline-block; }

.info-section h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  color: var(--accent-dark);
}

.info-body {
  display: grid;
  gap: 0.6rem;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--text-dark);
}

.info-placeholder {
  margin: 0;
  color: var(--text-muted);
}

.info-highlight {
  font-weight: 600;
  color: var(--accent-dark);
}

.info-subtle {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.metric-card {
  border-radius: 6px;
  padding: 0.75rem 0.9rem;
  background: #f2f6f5;
  border: 1px solid #c7d6d2;
}

.metric-card strong {
  display: block;
  font-size: 1.05rem;
  color: var(--accent-dark);
  margin-bottom: 0.2rem;
}

.metric-card span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.shelter-nav-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.9rem;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  background: var(--accent-mid);
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s ease, transform 0.2s ease;
}

.shelter-nav-button:hover,
.shelter-nav-button:focus-visible {
  background: var(--accent-dark);
  transform: translateY(-1px);
}

.shelter-nav-button:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.8);
  outline-offset: 2px;
}

.meter-collection {
  margin-top: 1rem;
  width: 100%;
}

.meter-card {
  border: 1px solid var(--border-soft);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.95);
  padding: 0.75rem 0.85rem;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.meter-card + .meter-card {
  margin-top: 0.75rem;
}

.meter-card__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.6rem;
  font-size: 0.85rem;
}

.meter-card__label {
  font-weight: 600;
  color: var(--accent-dark);
}

.meter-card__value {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.gradient-meter {
  margin-top: 0.3rem;
}

.gradient-meter__bar {
  position: relative;
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, #52b788 0%, #f94144 100%);
}

.gradient-meter__bar--risk {
  background: linear-gradient(90deg, #9cd191 0%, #ffd166 50%, #e76f51 100%);
}

.gradient-meter__bar--value,
.gradient-meter__bar--improvement,
.gradient-meter__bar--acre {
  background: linear-gradient(90deg, #52b788 0%, #f94144 100%);
}

.gradient-meter__marker {
  position: absolute;
  top: -4px;
  width: 2px;
  height: 18px;
  background: var(--accent-dark);
  transform: translateX(-50%);
  border-radius: 1px;
}

.meter-card__percent {
  margin: 0.35rem 0 0;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.risk-gauge {
  display: flex;
  justify-content: center;
}

.risk-gauge__dial {
  position: relative;
  width: min(220px, 100%);
  height: 120px;
}

.risk-gauge__svg {
  width: 100%;
  height: 100%;
  display: block;
}

.risk-gauge__segment {
  fill: none;
  stroke-width: 18;
  stroke-linecap: round;
}

.risk-gauge__segment--ve { stroke: var(--zone-ve); }
.risk-gauge__segment--ae { stroke: var(--zone-ae); }
.risk-gauge__segment--ao { stroke: var(--zone-ao); }
.risk-gauge__segment--a { stroke: var(--zone-a); }
.risk-gauge__segment--x { stroke: var(--zone-x); }

.risk-gauge__needle {
  position: absolute;
  left: 50%;
  bottom: 20px;
  width: 4px;
  height: 72px;
  background: var(--accent-dark);
  border-radius: 999px;
  transform-origin: 50% 100%;
  transform: rotate(var(--needle-angle, 0deg));
}

.risk-gauge__needle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: -10px;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 12px solid var(--accent-dark);
}

.risk-gauge__hub {
  position: absolute;
  left: 50%;
  bottom: 14px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--panel-bg);
  border: 3px solid var(--accent-dark);
  transform: translate(-50%, 50%);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.12);
}

.risk-gauge__zone {
  position: absolute;
  left: 50%;
  bottom: 34px;
  transform: translateX(-50%);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-dark);
  letter-spacing: 0.05em;
}

.risk-gauge__footnote {
  margin: 0;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.risk-panel {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: minmax(0, 1fr);
}

.risk-gauge-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: rgba(205, 224, 214, 0.35);
  border: 1px solid rgba(121, 165, 148, 0.5);
  border-radius: 14px;
  padding: 1.1rem 1.25rem 1.5rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6);
  width: 100%;
}

.risk-gauge-card__body {
  display: flex;
  justify-content: center;
}

.risk-gauge-card__summary {
  margin-top: 0.5rem;
}

.risk-summary {
  text-align: center;
}

.risk-summary__title {
  margin: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-dark);
  letter-spacing: 0.01em;
}

.risk-summary__title-text {
  display: inline-block;
}

.risk-summary__tooltip {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.risk-summary__tooltip-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
}

.risk-summary__tooltip-trigger:focus-visible {
  outline: 2px solid var(--accent-mid);
  outline-offset: 2px;
}

.risk-summary__tooltip-icon {
  width: 18px;
  height: 18px;
  display: block;
}

.risk-summary__tooltip-content {
  display: none;
  position: absolute;
  top: 125%;
  left: 50%;
  transform: translateX(-50%);
  --tooltip-arrow-x: 50%;
  min-width: 200px;
  max-width: min(260px, 80vw);
  padding: 0.65rem 0.75rem;
  background: #ffffff;
  border: 1px solid rgba(121, 165, 148, 0.35);
  border-radius: 8px;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.14);
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--text-muted);
  line-height: 1.5;
  z-index: 25;
}

.risk-summary__tooltip-content::before {
  content: "";
  position: absolute;
  top: -8px;
  left: var(--tooltip-arrow-x);
  transform: translateX(-50%);
  border-width: 0 8px 8px 8px;
  border-style: solid;
  border-color: transparent transparent rgba(121, 165, 148, 0.35) transparent;
}

.risk-summary__tooltip.is-active .risk-summary__tooltip-content {
  display: block;
}

.risk-summary__tooltip-content--align-left {
  left: 0;
  transform: none;
  --tooltip-arrow-x: 14px;
}

.risk-summary__tooltip-content--align-right {
  left: auto;
  right: 0;
  transform: none;
  --tooltip-arrow-x: calc(100% - 14px);
}

.risk-recommendation {
  margin: 1rem 0 0;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.app-footer {
  padding: 0.4rem 1.5rem 0.8rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.2;
}

.app-footer a {
  color: #4d8076;
  text-decoration: none;
}

.app-footer a:hover,
.app-footer a:focus-visible {
  color: #2f4f4f;
  text-decoration: underline;
}


@media (max-width: 1024px) {
  .app-main {
    grid-template-columns: 1fr;
    padding: 1rem 1.4rem 1.4rem;
  }

  .map-panel {
    position: relative;
    top: auto;
    height: 520px;
    min-height: 520px;
  }

  .legend-panel {
    position: static;
    width: 100%;
    max-height: none;
    overflow: visible;
    margin-top: 1rem;
  }

  .info-panel {
    flex-direction: column;
    max-height: none;
    overflow: visible;
    padding-right: 0;
  }
}

@media (max-width: 640px) {
  .app-header {
    padding: 1.1rem 1.2rem 0.9rem;
  }

  .app-main {
    padding: 1.2rem;
    gap: 1rem;
  }

  .map-panel {
    position: relative;
    top: auto;
    height: 420px;
    min-height: 420px;
  }

  .info-section {
    padding: 0.95rem 1rem;
  }
}