:root {
  --bg: #f6f4f0;
  --panel: #fff;
  --text: #1a1a1a;
  --muted: #5c5c5c;
  --accent: #c45c26;
  --accent-soft: #f0e6dc;
  --ok: #2d6a4f;
  --warn: #9a6b00;
  --border: #e0dcd4;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.site-header {
  padding: 1.25rem 1.5rem;
  background: linear-gradient(135deg, #2c3e50 0%, #4a6741 100%);
  color: #fff;
}

.site-header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.35rem;
  font-weight: 600;
}

.subtitle {
  margin: 0;
  opacity: 0.85;
  font-size: 0.9rem;
}

.error-banner {
  margin: 0;
  padding: 0.75rem 1rem;
  background: #fde8e8;
  color: #9b1c1c;
}

.layout {
  display: grid;
  grid-template-columns: minmax(260px, 320px) 1fr;
  gap: 1rem;
  padding: 1rem 1.5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

@media (max-width: 800px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

.panel {
  background: var(--panel);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.panel h2 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  color: var(--accent);
}

.sidebar input[type="range"] {
  width: 100%;
}

.score-display {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0.25rem 0 1rem;
}

.preset-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.preset-row button,
.add-row button,
.vol-actions button,
#sim-btn,
#export-btn {
  cursor: pointer;
  border: 1px solid var(--border);
  background: #fff;
  padding: 0.4rem 0.75rem;
  border-radius: 6px;
  font-size: 0.85rem;
}

.preset-row button:hover,
#export-btn:hover {
  background: var(--accent-soft);
}

#sim-btn.primary {
  width: 100%;
  margin-top: 0.75rem;
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  font-weight: 600;
  padding: 0.6rem;
}

#export-btn {
  width: 100%;
  margin-top: 0.5rem;
}

.hint {
  font-size: 0.8rem;
  color: var(--muted);
  margin: 0 0 1rem;
}

.sidebar label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.sidebar select {
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.35rem;
}

.checkbox {
  display: flex !important;
  align-items: center;
  gap: 0.5rem;
}

.add-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.add-row select {
  flex: 1;
  padding: 0.35rem;
}

.volunteer-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.volunteer-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 0.5rem;
  background: #faf9f7;
}

.volunteer-item.dragging {
  opacity: 0.5;
}

.vol-index {
  flex: 0 0 1.75rem;
  height: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 700;
}

.vol-body {
  flex: 1;
  min-width: 0;
}

.vol-body strong {
  display: block;
  font-size: 0.95rem;
}

.vol-meta {
  font-size: 0.8rem;
  color: var(--muted);
}

.vol-actions {
  display: flex;
  gap: 0.25rem;
}

.vol-actions .danger {
  color: #9b1c1c;
}

.sim-result {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border);
}

.sim-result h3 {
  margin: 0 0 0.5rem;
}

.sim-result section {
  margin-bottom: 1rem;
}

.sim-result h4 {
  margin: 0 0 0.35rem;
  font-size: 0.95rem;
}

.sim-result .ok {
  color: var(--ok);
}

.sim-result .warn {
  color: var(--warn);
}

.site-footer {
  text-align: center;
  padding: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.site-footer a {
  color: var(--accent);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.75rem;
  font-size: 0.9rem;
}

.site-nav a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

.site-nav a:hover {
  background: rgba(255, 255, 255, 0.12);
}

.site-nav a.active {
  background: rgba(255, 255, 255, 0.2);
  font-weight: 600;
}

.schools-page {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 1.5rem 2rem;
}

.banner-hint {
  margin: 0.5rem 1.5rem;
  padding: 0 0.25rem;
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.filter-grid fieldset {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 0.85rem;
  margin: 0;
}

.filter-grid legend {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0 0.25rem;
}

.filter-grid label {
  display: block;
  font-size: 0.85rem;
  margin: 0.35rem 0;
  cursor: pointer;
}

.score-filter {
  grid-column: 1 / -1;
}

.score-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 0.5rem 0;
}

.score-row input[type="range"] {
  flex: 1;
  min-width: 120px;
}

.margin-row {
  display: grid;
  gap: 0.75rem;
  margin: 0.5rem 0;
}

.margin-values {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.9rem;
}

.margin-values span {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  white-space: nowrap;
}

.margin-values strong {
  font-weight: 700;
}

.range-slider {
  position: relative;
  width: 100%;
  height: 2.8rem;
  display: flex;
  align-items: center;
}

.range-slider .rail,
.range-slider .fill,
.range-slider .center-marker {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
}

.range-slider .rail {
  left: 0;
  right: 0;
  height: 0.35rem;
  background: #e5e5e5;
  border-radius: 999px;
}

.range-slider .fill {
  height: 0.35rem;
  border-radius: 999px;
}

.range-slider .fill-down {
  left: var(--down-left, 35%);
  width: var(--down-width, 25%);
  background: rgba(45, 106, 79, 0.35);
}

.range-slider .fill-up {
  left: 60%;
  width: var(--up-width, 15%);
  background: rgba(196, 92, 38, 0.38);
}

.range-slider .center-marker {
  left: 60%;
  width: 3px;
  height: 1rem;
  background: var(--muted);
  opacity: 0.6;
  border-radius: 999px;
  z-index: 1;
}

.range-slider input[type="range"] {
  position: absolute;
  height: 100%;
  top: 0;
  margin: 0;
  background: transparent;
  -webkit-appearance: none;
  pointer-events: none;
  z-index: 2;
}

#filter-margin-down {
  left: 0;
  width: 60%;
}

#filter-margin-up {
  left: 60%;
  width: 40%;
}

.range-slider input[type="range"]:focus {
  outline: none;
}

/* Thumbs */
.range-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 50%;
  background: #ffffff;
  border: 3px solid var(--accent);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  pointer-events: auto;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.range-slider input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.22);
}

.range-slider input[type="range"]::-webkit-slider-thumb:active {
  transform: scale(1.15);
  background: var(--accent);
  border-color: #ffffff;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.28);
}

/* Firefox Thumbs */
.range-slider input[type="range"]::-moz-range-thumb {
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 50%;
  background: #ffffff;
  border: 3px solid var(--accent);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  pointer-events: auto;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.range-slider input[type="range"]::-moz-range-thumb:hover {
  transform: scale(1.15);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.22);
}

.range-slider input[type="range"]::-moz-range-thumb:active {
  transform: scale(1.15);
  background: var(--accent);
  border-color: #ffffff;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.28);
}

/* Specific styling for the down thumb vs up thumb */
#filter-margin-down::-webkit-slider-thumb {
  border-color: var(--ok);
}
#filter-margin-down::-webkit-slider-thumb:active {
  background: var(--ok);
}
#filter-margin-down::-moz-range-thumb {
  border-color: var(--ok);
}
#filter-margin-down::-moz-range-thumb:active {
  background: var(--ok);
}

.range-slider input[type="range"]::-webkit-slider-runnable-track {
  background: transparent;
  border: none;
}
.range-slider input[type="range"]::-moz-range-track {
  background: transparent;
  border: none;
}

.table-wrap {
  overflow-x: auto;
  padding: 0;
}

.score-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.score-table th,
.score-table td {
  padding: 0.5rem 0.65rem;
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.score-table thead th {
  position: sticky;
  top: 0;
  background: #f0ebe4;
  z-index: 1;
  white-space: nowrap;
}

.th-sub {
  font-weight: normal;
  font-size: 0.7rem;
  color: var(--muted);
}

.score-table td.num {
  text-align: center;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.score-table .name {
  text-align: left;
}

.score-table td.name {
  font-weight: 500;
  min-width: 10rem;
}

.score-table tr.row-hit {
  background: #e8f5ee;
  box-shadow: inset 3px 0 0 var(--ok);
}

.score-table tr.row-hit td.name {
  color: var(--ok);
  font-weight: 700;
}

.score-table tr.row-band {
  background: #fff9e6;
}

.score-table td.pos {
  color: var(--ok);
  font-weight: 600;
}

.score-table td.neg {
  color: #9b1c1c;
}

.score-table td.empty {
  text-align: center;
  color: var(--muted);
  padding: 2rem;
}

.footnote {
  margin: 1rem 1.5rem 0;
}

@media (max-width: 900px) {
  .site-header {
    padding: 1rem 1rem;
  }

  .site-header h1 {
    font-size: 1.2rem;
  }

  .subtitle {
    font-size: 0.85rem;
  }

  .layout,
  .schools-page {
    padding: 0.9rem 1rem 1.5rem;
  }

  .panel {
    padding: 0.85rem 1rem;
  }

  .panel h2 {
    font-size: 0.95rem;
  }

  .filter-grid {
    gap: 0.75rem;
  }

  .score-row {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .preset-row {
    flex-wrap: wrap;
  }

  .preset-row button,
  .add-row button,
  .vol-actions button,
  #sim-btn,
  #export-btn {
    font-size: 0.85rem;
  }

  .filter-toggle {
    display: block;
    width: 100%;
    margin-bottom: 0.75rem;
    padding: 0.7rem 0.85rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fff;
    color: var(--text);
    text-align: left;
    font-size: 0.95rem;
    cursor: pointer;
  }

  .filters-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
  }

  .filters-header h2 {
    margin: 0;
    cursor: pointer;
  }

  .panel.filters.collapsed .filter-panel-content {
    display: none;
  }

  .filter-panel-content {
    transition: all 0.2s ease;
  }

  .score-table {
    font-size: 0.82rem;
  }

  .score-table thead th {
    white-space: normal;
  }

  .score-table td.name {
    min-width: 8rem;
  }

  .table-summary,
  .footnote,
  .banner-hint {
    margin-left: 0;
    margin-right: 0;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 0.85rem 0.85rem;
  }

  .site-header h1 {
    font-size: 1.05rem;
  }

  .subtitle {
    font-size: 0.82rem;
  }

  .panel {
    padding: 0.8rem;
  }

  .layout,
  .schools-page {
    padding: 0.75rem 0.35rem 1.5rem;
  }

  .panel.table-wrap {
    padding: 0 !important;
    border-left: none;
    border-right: none;
    border-radius: 0;
  }

  .score-display {
    font-size: 1.4rem;
  }

  .preset-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .preset-row button,
  .add-row button,
  .vol-actions button,
  #sim-btn,
  #export-btn {
    flex: 1 1 0;
    min-width: 0;
    padding: 0.55rem;
    font-size: 0.8rem;
  }

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

  .score-table th,
  .score-table td {
    padding: 0.4rem 0.45rem;
    font-size: 0.78rem;
  }

  .score-table td.name {
    min-width: 7rem;
  }

  .site-footer {
    font-size: 0.8rem;
    padding: 0.8rem;
  }
}

.table-remark {
  margin: -0.5rem 1.5rem 0.75rem;
}

@media (max-width: 900px) {
  .table-remark {
    margin-left: 0;
    margin-right: 0;
  }
}

/* Responsive Table score-pair and name-box */
.score-pair {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.score-pair .label {
  display: none;
}

.score-pair .score-sep {
  display: inline;
  opacity: 0.5;
}

.name-box {
  display: flex;
  flex-direction: column;
}

.name-box .mobile-code {
  display: none;
}

@media (max-width: 640px) {
  .col-code,
  .col-scope {
    display: none !important;
  }

  .score-pair {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
  }

  .score-pair .label {
    display: inline;
    font-size: 0.7rem;
    color: var(--muted);
    margin-right: 0.15rem;
  }

  .score-pair .score-sep {
    display: none;
  }

  .name-box .mobile-code {
    display: inline;
    font-size: 0.75rem;
    color: var(--muted);
    margin-top: 0.15rem;
  }
}