:root {
  --bg: #f7f8fa;
  --panel: #ffffff;
  --ink: #1f2430;
  --muted: #667085;
  --line: #d9dee8;
  --line-strong: #aeb7c6;
  --blue: #253b73;
  --blue-soft: #c9d9f0;
  --blue-faint: #e6eef9;
  --red: #d64937;
  --year-line: #111827;
  --current-line: #16855b;
  --forecast-line: #8b42d6;
  --gray-band: #f1f1f1;
  --shadow: 0 10px 28px rgba(30, 38, 55, 0.08);
  --toggle-gutter: 46px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", sans-serif;
  line-height: 1.45;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 8px calc(clamp(14px, 3vw, 32px) + var(--toggle-gutter)) 8px clamp(14px, 3vw, 32px);
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.title-lockup {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  min-width: 0;
}

h1 {
  margin: 0;
  font-size: clamp(24px, 2.4vw, 34px);
  letter-spacing: 0;
  line-height: 1.08;
}

.app-header p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  min-width: 0;
}

.brand {
  color: var(--blue);
  font-weight: 800;
  white-space: nowrap;
}

.guide-link {
  display: inline-flex;
  align-items: center;
  align-self: center;
  gap: 6px;
  min-height: 30px;
  padding: 4px 10px 4px 7px;
  border: 1px solid #b8c3d6;
  border-radius: 999px;
  background: #f6f9ff;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(37, 59, 115, 0.1);
  transition: border-color 0.14s ease, background-color 0.14s ease, box-shadow 0.14s ease, transform 0.14s ease;
}

.guide-link:hover {
  border-color: var(--blue);
  background: #edf4ff;
  box-shadow: 0 7px 18px rgba(37, 59, 115, 0.16);
  transform: translateY(-1px);
}

.guide-link:focus-visible {
  outline: 2px solid #2f6bd8;
  outline-offset: 2px;
}

.guide-icon {
  display: inline-grid;
  width: 19px;
  height: 19px;
  place-items: center;
  border-radius: 999px;
  background: var(--blue);
  color: #fff;
}

.guide-icon svg {
  width: 14px;
  height: 14px;
  display: block;
}

.guide-icon path {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.sns-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.sns-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 34px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: #fff;
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.14s ease, background-color 0.14s ease, box-shadow 0.14s ease, transform 0.14s ease;
}

.sns-link:hover {
  border-color: var(--blue);
  background: #f6f9ff;
  box-shadow: 0 5px 14px rgba(30, 38, 55, 0.12);
  filter: none;
  transform: translateY(-1px);
}

.sns-link:focus-visible {
  outline: 2px solid #2f6bd8;
  outline-offset: 2px;
}

.sns-icon {
  display: inline-grid;
  width: 18px;
  height: 18px;
  place-items: center;
  border-radius: 5px;
  color: #fff;
  font-size: 12px;
  font-weight: 900;
  line-height: 1;
}

.sns-icon svg {
  width: 18px;
  height: 18px;
  display: block;
}

.sns-icon rect {
  fill: #ff0033;
}

.sns-icon path {
  fill: #fff;
}

.sns-mark {
  display: inline-grid;
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
  place-items: center;
  line-height: 1;
}

.note-mark {
  width: 24px;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  background: #fff;
  color: #000;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: 0;
  box-shadow: 0 1px 2px rgba(30, 38, 55, 0.08);
}

.sns-link.note:hover .note-mark {
  border-color: #cbd5e1;
  background: #f9fafb;
}

.x-mark svg {
  display: block;
  width: 24px;
  height: 24px;
}

.x-mark rect {
  fill: #000;
}

.x-mark path {
  fill: #fff;
}

.sns-name {
  color: #3f3f46;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
}

main {
  position: relative;
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 4px calc(clamp(10px, 2.4vw, 24px) + var(--toggle-gutter)) 10px clamp(10px, 2.4vw, 24px);
}

.panel-toggles {
  height: 0;
  margin: 0;
  padding: 0;
}

.panel-toggle {
  display: inline-grid;
  position: fixed;
  top: var(--toggle-top, 42px);
  right: 10px;
  z-index: 20;
  width: 24px;
  height: 24px;
  place-items: center;
  padding: 0;
  transform: translateY(-50%);
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.95);
  color: var(--blue);
  font-size: 14px;
  line-height: 1;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 3px 10px rgba(30, 38, 55, 0.12);
}

.panel-toggle.active {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

body.collapse-header .app-header,
body.collapse-controls .toolbar,
body.collapse-summary .metric-grid {
  display: none;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: end;
  padding: 10px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.control {
  display: grid;
  gap: 3px;
  min-width: 104px;
}

.station-control {
  min-width: 190px;
}

.search-control {
  min-width: 150px;
}

.period-control,
.background-control {
  min-width: 116px;
}

.year-control {
  min-width: 92px;
}

.control span,
.label {
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.2;
}

select,
input,
button {
  font: inherit;
}

select,
input {
  width: 100%;
  height: 34px;
  padding: 0 9px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
}

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--blue);
  border-radius: 6px;
  overflow: hidden;
  height: 34px;
  min-width: 142px;
}

.segmented button {
  border: 0;
  background: #fff;
  color: var(--blue);
  padding: 0 10px;
  font-weight: 800;
  cursor: pointer;
  white-space: nowrap;
}

.segmented button.active {
  background: var(--blue);
  color: #fff;
}

.command {
  height: 34px;
  padding: 0 11px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font-weight: 800;
  cursor: pointer;
  min-width: 92px;
  white-space: nowrap;
}

.overlay-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.toggle {
  min-height: 34px;
  padding: 3px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font-weight: 800;
  cursor: pointer;
  white-space: nowrap;
}

.toggle.active {
  border-color: var(--blue);
  background: #edf3ff;
  color: var(--blue);
}

.toggle:disabled {
  color: #9aa3b2;
  cursor: not-allowed;
  background: #f3f4f6;
}

.station-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: stretch;
}

.station-meta > div {
  display: grid;
  gap: 2px;
  min-width: 82px;
  min-height: 34px;
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfcfe;
}

.station-meta > div:first-child {
  min-width: 148px;
}

.station-meta strong {
  color: var(--ink);
  font-size: 14px;
  font-weight: 900;
  line-height: 1.05;
  white-space: nowrap;
}

.command:hover,
.segmented button:hover {
  filter: brightness(0.97);
}

.metric-grid {
  display: grid;
  gap: 9px;
  grid-template-columns: minmax(360px, 1fr) minmax(440px, 1fr);
  align-items: stretch;
  margin-top: 8px;
}

.timing-panel,
.stat-panel {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.timing-panel {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.stat-panel {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.metric {
  min-width: 0;
  padding: 9px 11px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.timing-card {
  border-color: #aebbd1;
  background: #fff;
  box-shadow: inset 0 3px 0 var(--blue);
}

.stat-card {
  background: #fff;
}

.timing-card .label {
  color: var(--blue);
  display: block;
  font-size: clamp(10px, 0.72vw, 13px);
  line-height: 1.25;
  white-space: nowrap;
}

.metric strong {
  display: block;
  margin-top: 3px;
  font-size: clamp(14px, 1.2vw, 19px);
  letter-spacing: 0;
  white-space: normal;
  line-height: 1.15;
}

.metric-value {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-top: 4px;
  font-weight: 900;
}

.metric-date {
  display: inline-block;
  min-width: 58px;
  color: var(--ink);
  font-size: clamp(20px, 1.8vw, 28px);
  line-height: 1.05;
}

.metric-temp {
  color: #303846;
  font-size: clamp(17px, 1.35vw, 22px);
  line-height: 1.05;
}

.threshold-list {
  display: grid;
  gap: 4px;
  margin-top: 6px;
}

.threshold-list div {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  border-bottom: 1px solid #eef1f5;
  padding-bottom: 2px;
}

.threshold-list span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

.threshold-list b {
  font-size: 18px;
  white-space: nowrap;
}

.chart-shell {
  position: relative;
  margin-top: 8px;
  padding: 10px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1440 / 780;
  cursor: grab;
  touch-action: none;
  user-select: none;
}

canvas.dragging {
  cursor: grabbing;
}

.chart-scrollbars[hidden] {
  display: none;
}

.chart-scrollbar {
  position: absolute;
  z-index: 4;
  border: 1px solid rgba(174, 183, 198, 0.95);
  border-radius: 999px;
  background: rgba(247, 248, 250, 0.9);
  box-shadow: 0 3px 10px rgba(30, 38, 55, 0.12);
  cursor: pointer;
}

.chart-scrollbar:hover,
.chart-scrollbar:focus-visible {
  border-color: var(--blue);
  background: rgba(255, 255, 255, 0.96);
  outline: none;
}

.chart-scrollbar-thumb {
  position: absolute;
  border-radius: 999px;
  background: rgba(37, 59, 115, 0.72);
}

.chart-scrollbar:hover .chart-scrollbar-thumb,
.chart-scrollbar:focus-visible .chart-scrollbar-thumb {
  background: rgba(37, 59, 115, 0.9);
}

.chart-scrollbar.dragging .chart-scrollbar-thumb {
  background: var(--blue);
}

.chart-scrollbar-x {
  height: 11px;
}

.chart-scrollbar-x .chart-scrollbar-thumb {
  top: 1px;
  height: calc(100% - 2px);
}

.chart-reset-button {
  display: none;
  position: absolute;
  z-index: 5;
  top: 62px;
  right: 16px;
  min-width: 72px;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid rgba(37, 59, 115, 0.55);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  line-height: 1;
  box-shadow: 0 4px 14px rgba(30, 38, 55, 0.16);
  touch-action: manipulation;
}

.chart-reset-button[hidden] {
  display: none !important;
}

.tooltip {
  position: absolute;
  pointer-events: none;
  min-width: 210px;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 8px 22px rgba(30, 38, 55, 0.16);
  font-size: 13px;
  z-index: 3;
}

.tooltip strong {
  display: block;
  margin-bottom: 5px;
  font-size: 15px;
}

.legend-row {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  gap: 8px 16px;
  align-items: center;
}

.chart-legend[hidden],
.legend-row[hidden],
.legend-row [hidden] {
  display: none !important;
}

.chart-legend {
  display: grid;
  position: absolute;
  z-index: 2;
  bottom: 64px;
  left: 50%;
  width: max-content;
  max-width: calc(100% - 120px);
  gap: 5px;
  padding: 7px 11px;
  transform: translateX(-50%);
  border: 1px solid rgba(151, 164, 184, 0.9);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 3px 10px rgba(30, 38, 55, 0.12);
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  pointer-events: none;
}

.chart-legend .swatch {
  width: 32px;
  height: 15px;
}

.chart-legend .line {
  width: 34px;
}

.chart-legend .marker-dot {
  width: 15px;
  height: 15px;
}

.legend-row span {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  white-space: nowrap;
}

.legend-row b {
  font-weight: 800;
}

.swatch {
  display: inline-block;
  width: 28px;
  height: 13px;
  border: 1px solid var(--line-strong);
}

.swatch.range {
  background: var(--gray-band);
}

.swatch.p1090 {
  background: var(--blue-faint);
}

.swatch.p2575 {
  background: var(--blue-soft);
}

.line {
  display: inline-block;
  width: 30px;
  height: 0;
  border-top: 4px solid;
}

.line.mean {
  border-color: var(--red);
}

.line.median {
  border-color: var(--blue);
}

.line.year {
  border-top-color: var(--year-line);
}

.line.current {
  border-top-color: var(--current-line);
}

.line.forecast {
  border-top-color: var(--forecast-line);
  border-top-style: dashed;
}

.marker-dot {
  display: inline-block;
  width: 13px;
  height: 13px;
  border: 2px solid #fff;
  border-radius: 999px;
  background: #e23b3b;
  box-shadow: 0 0 0 1px #b91c1c;
}

#statusText {
  flex: 0 0 auto;
  width: auto;
  margin: 0;
  text-align: right;
  white-space: nowrap;
}

.status-compact,
.status-mobile,
.source-mobile {
  display: none;
}

.app-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 8px clamp(10px, 2.4vw, 24px) 10px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.3;
  white-space: nowrap;
}

.source-text {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

@media (max-width: 980px) {
  .app-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .header-actions {
    justify-content: space-between;
    width: 100%;
  }

  .toolbar {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .station-control,
  .search-control,
  .segmented,
  .overlay-controls {
    grid-column: auto;
  }

  .metric-grid {
    grid-template-columns: 1fr;
  }

  .timing-panel {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: none;
  }

  .app-footer {
    gap: 8px;
    font-size: 10px;
  }

  .status-full {
    display: none;
  }

  .status-compact {
    display: inline;
  }

}

@media (max-width: 900px) {
  .chart-shell {
    overflow: hidden;
    overscroll-behavior-x: none;
  }

  canvas {
    width: 100%;
    max-width: 100%;
    aspect-ratio: auto;
    cursor: default;
    touch-action: pan-y;
  }

  .chart-scrollbars {
    display: none !important;
  }

  .chart-reset-button:not([hidden]) {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .chart-legend {
    bottom: 56px;
    max-width: calc(100% - 24px);
    gap: 4px;
    padding: 4px 6px;
    font-size: 11px;
    line-height: 1.1;
  }

  .chart-legend .legend-row {
    gap: 4px 8px;
  }

  .chart-legend span {
    gap: 4px;
  }

  .chart-legend .swatch {
    width: 20px;
    height: 10px;
  }

  .chart-legend .line {
    width: 22px;
    border-top-width: 3px;
  }

  .chart-legend .marker-dot {
    width: 11px;
    height: 11px;
  }
}

@media (max-width: 620px) {
  .app-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .toolbar,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .timing-panel,
  .stat-panel {
    grid-template-columns: 1fr;
  }

  .overlay-controls {
    flex-direction: column;
  }

  .chart-shell {
    padding: 8px;
  }

  .chart-legend {
    bottom: 54px;
    max-width: calc(100% - 8px);
    gap: 3px;
    padding: 4px;
    font-size: 9.5px;
  }

  .chart-legend .legend-row {
    gap: 3px;
  }

  .chart-legend span {
    gap: 2px;
  }

  .chart-legend .swatch {
    width: 15px;
    height: 9px;
  }

  .chart-legend .line {
    width: 16px;
  }

  .chart-legend .marker-dot {
    width: 9px;
    height: 9px;
  }

  .status-compact {
    display: none;
  }

  .status-mobile,
  .source-mobile {
    display: inline;
  }

  .source-full {
    display: none;
  }

  .app-footer {
    gap: 4px;
    padding: 6px 8px 8px;
    font-size: 8px;
  }
}

@media (max-width: 375px) {
  .chart-legend {
    padding-inline: 3px;
    font-size: 9px;
  }

  .chart-legend .legend-row {
    gap: 2px;
  }

  .chart-legend span {
    gap: 1px;
  }

  .chart-legend .swatch {
    width: 13px;
  }

  .chart-legend .line {
    width: 14px;
  }
}