:root {
  color-scheme: light;
  --ink: #17242a;
  --muted: #5a6b72;
  --line: #cbd7dc;
  --border-row: #e4ecef;
  --surface: #f7fbfc;
  --white: #ffffff;
  --accent: #0b7f86;
  --accent-strong: #07545b;
  --sun: #e2a83b;
  --coral: #d96c5f;
  --lead: #22333a;
  --tag-default-bg: #e7f4f3;
  --tag-good-bg: #dcefa6;
  --tag-good-text: #33440b;
  --tag-fair-bg: #f2d275;
  --tag-fair-text: #4c3800;
  --tag-poor-bg: #e4a1a1;
  --tag-poor-text: #5b1717;
}

* {
  box-sizing: border-box;
}

.loading-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  transform: translateX(-100%);
  z-index: 100;
  display: none;
}

.loading-bar.active {
  display: block;
  animation: loading-slide 1.2s ease-in-out infinite;
}

@keyframes loading-slide {
  to { transform: translateX(100%); }
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--ink);
  background: var(--surface);
  line-height: 1.6;
}

.mast {
  min-height: 30vh;
  display: grid;
  align-items: end;
  background:
    linear-gradient(180deg, rgba(15, 30, 36, 0.24), rgba(247, 251, 252, 0.92)),
    url("https://images.unsplash.com/photo-1502680390469-be75c86b636f?auto=format&fit=crop&w=1800&q=80") center/cover;
  padding: 48px 20px 36px;
}

.mast-inner,
main {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

h1 {
  margin: 0 0 10px;
  font-size: clamp(2.1rem, 6vw, 4.4rem);
  line-height: 1.03;
  letter-spacing: 0;
}

.lead {
  max-width: 720px;
  margin: 0;
  font-size: 1.05rem;
  color: var(--lead);
}

main {
  padding: 28px 0 48px;
}

form {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) auto auto;
  gap: 12px;
  align-items: end;
  padding: 18px 0 28px;
  border-bottom: 1px solid var(--line);
}

label {
  display: grid;
  gap: 6px;
  font-weight: 700;
  color: var(--accent-strong);
}

input,
select,
button {
  min-height: 44px;
  border-radius: 8px;
  font: inherit;
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  padding: 10px 12px;
  background: var(--white);
  color: var(--ink);
}

button {
  border: 0;
  padding: 10px 18px;
  background: var(--accent);
  color: var(--white);
  font-weight: 800;
  cursor: pointer;
  transition: background 0.15s;
}

button:hover:not(:disabled) {
  background: var(--accent-strong);
}

button:disabled {
  background: var(--muted);
  cursor: not-allowed;
}

a {
  color: var(--accent-strong);
}

.day-toggle {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  min-height: 44px;
  background: var(--white);
}

.day-option {
  display: flex;
  align-items: center;
  font-weight: 700;
  color: var(--accent-strong);
}

.day-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  min-height: 0;
  border-radius: 0;
}

.day-option span {
  display: flex;
  align-items: center;
  padding: 10px 18px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.day-option input[type="radio"]:checked + span {
  background: var(--accent);
  color: var(--white);
}

.summary {
  display: grid;
  grid-template-columns: 1fr 160px;
  gap: 12px;
  margin: 28px 0;
  align-items: start;
}

.snapshot {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  padding: 18px 20px;
}

.snapshot-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.snapshot-label {
  font-size: 0.86rem;
  color: var(--muted);
  flex-shrink: 0;
}

.snapshot-time {
  font-size: 1.6rem;
  font-weight: 800;
  line-height: 1;
  flex: 1;
}

.score-bar {
  height: 6px;
  background: var(--line);
  border-radius: 3px;
  margin-bottom: 16px;
  overflow: hidden;
}

.score-bar__fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.4s ease;
}

.score-bar__fill--excellent { background: var(--accent); }
.score-bar__fill--good      { background: var(--tag-good-text); }
.score-bar__fill--fair      { background: var(--sun); }
.score-bar__fill--poor      { background: var(--coral); }

.snapshot-stats {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.snapshot-stat span {
  display: block;
  font-size: 0.82rem;
  color: var(--muted);
}

.snapshot-stat strong {
  font-size: 1rem;
  font-weight: 700;
}

.metric {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  padding: 16px;
}

.metric span,
th {
  color: var(--muted);
  font-size: 0.86rem;
}

.metric strong {
  display: block;
  margin-top: 8px;
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1.2;
}

.metric-sub {
  display: block;
  margin-top: 6px;
  font-size: 0.86rem;
  color: var(--accent-strong);
  font-weight: 700;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 0.9rem;
}

.legend span {
  font-weight: 800;
  color: var(--accent-strong);
}

.legend ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.legend li {
  display: inline-flex;
  gap: 6px;
  align-items: center;
}

.legend-chip {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 4px;
}

.notice {
  border-left: 4px solid var(--coral);
  padding: 10px 12px;
  background: #fff5f5;
  color: var(--ink);
}

.notice--warning {
  border-left-color: var(--sun);
  background: #fffbf0;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
}

th,
td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border-row);
  white-space: nowrap;
}

tr:last-child td {
  border-bottom: 0;
}

.row-best {
  background: var(--tag-default-bg);
}

.row-best td:first-child {
  font-weight: 800;
  color: var(--accent-strong);
}

.detail-row {
  display: none;
}

.detail-row td {
  padding: 0;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-width: 56px;
  justify-content: center;
  border-radius: 8px;
  padding: 5px 10px;
  background: var(--tag-default-bg);
  color: var(--accent-strong);
  font-weight: 800;
}

.tag-unknown {
  background: var(--line);
  color: var(--muted);
}

.tag-excellent {
  background: var(--accent);
  color: var(--white);
}

.tag-good {
  background: var(--tag-good-bg);
  color: var(--tag-good-text);
}

.tag-fair {
  background: var(--tag-fair-bg);
  color: var(--tag-fair-text);
}

.tag-poor {
  background: var(--tag-poor-bg);
  color: var(--tag-poor-text);
}

.source {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 18px;
}

.source a {
  color: var(--accent-strong);
}

@media (max-width: 760px) {
  .mast {
    min-height: 24vh;
    padding-top: 28px;
  }

  form,
  .summary {
    grid-template-columns: 1fr;
  }

  .day-toggle {
    width: fit-content;
  }

  .snapshot-stats {
    gap: 16px;
  }

  button {
    width: 100%;
  }

  .col-hide {
    display: none;
  }

  table {
    min-width: unset;
    width: 100%;
  }

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

  th,
  td {
    padding: 10px 8px;
    font-size: 0.82rem;
  }

  .row-main {
    cursor: pointer;
    user-select: none;
  }

  .row-main td:first-child::after {
    content: " ▾";
    font-size: 0.75em;
    color: var(--muted);
  }

  .row-main.open td:first-child::after {
    content: " ▴";
  }

  .row-main:active {
    background: var(--border-row);
  }

  .detail-row.open {
    display: table-row;
  }

  .detail-row.open td {
    border-bottom: 1px solid var(--border-row);
    padding: 0;
  }

  .detail-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 16px;
    padding: 12px 8px;
  }

  .detail-item {
    font-size: 0.82rem;
    font-weight: 700;
  }

  .detail-item span {
    display: block;
    color: var(--muted);
    font-size: 0.75rem;
    font-weight: 400;
    margin-bottom: 2px;
  }

}