:root {
  --bg: #f4f7fb;
  --surface: rgba(255,255,255,0.9);
  --surface-2: #ffffff;
  --surface-3: #eef3fb;
  --text: #0f172a;
  --muted: #5b6b84;
  --border: #d7e0eb;
  --primary: #2363eb;
  --primary-soft: rgba(35, 99, 235, 0.12);
  --success: #159947;
  --success-soft: rgba(21, 153, 71, 0.12);
  --warning: #c97d10;
  --warning-soft: rgba(201, 125, 16, 0.14);
  --danger: #d13b3b;
  --danger-soft: rgba(209, 59, 59, 0.12);
  --shadow-sm: 0 6px 18px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 18px 40px rgba(15, 23, 42, 0.1);
  --radius: 18px;
  --radius-sm: 12px;
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --max-width: 1400px;
  --font-family: "Segoe UI", "Aptos", "SF Pro Text", "Helvetica Neue", Arial, system-ui, sans-serif;
}
html { color-scheme: light; scrollbar-gutter: stable; }
body[data-theme="dark"] {
  --bg: #0b1220;
  --surface: rgba(18,27,44,0.92);
  --surface-2: #121b2c;
  --surface-3: #182438;
  --text: #edf3fb;
  --muted: #9eb0c8;
  --border: #26354a;
  --primary: #78a9ff;
  --primary-soft: rgba(120, 169, 255, 0.18);
  --success: #4ade80;
  --success-soft: rgba(74, 222, 128, 0.13);
  --warning: #f6ad2b;
  --warning-soft: rgba(246, 173, 43, 0.14);
  --danger: #fb7d7d;
  --danger-soft: rgba(251, 125, 125, 0.14);
  --shadow-sm: 0 10px 24px rgba(0,0,0,0.24);
  --shadow-md: 0 24px 50px rgba(0,0,0,0.32);
}
*,
*::before,
*::after { box-sizing: border-box; }
body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font-family);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(35,99,235,0.08), transparent 24%),
    radial-gradient(circle at top right, rgba(21,153,71,0.05), transparent 22%),
    var(--bg);
}
button, input, select, summary { font: inherit; }
button { cursor: pointer; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1,h2,h3,p { margin: 0; }
.app-shell {
  width: min(calc(100% - 1rem), var(--max-width));
  margin: 0 auto;
  padding: 1rem 0 2rem;
}
.card {
  background: var(--surface);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.hero {
  display: flex;
  justify-content: space-between;
  gap: var(--space-5);
  padding: 1.3rem 1.4rem;
  box-shadow: var(--shadow-md);
}
.eyebrow {
  color: var(--primary);
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: .78rem;
  margin-bottom: .35rem;
}
h1 {
  font-size: clamp(2rem, 4.6vw, 3.1rem);
  line-height: 1.02;
  letter-spacing: -.045em;
}
h2 {
  font-size: 1.15rem;
  letter-spacing: -.03em;
}
h3 { font-size: 1rem; }
.hero-copy-block { display: grid; gap: .65rem; max-width: 72ch; }
.hero-copy, .section-head p, .summary-note, .field-label, .message, .footer p, .empty-state p, .legend-label {
  color: var(--muted);
  line-height: 1.5;
}
.hero-actions, .topbar-group, .toolbar-actions, .tool-grid, .sample-links, .form-actions, .tabs, .segmented {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
}
.button {
  border: 0;
  border-radius: 12px;
  padding: .85rem 1rem;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  transition: transform .18s ease, box-shadow .18s ease, opacity .18s ease, background .18s ease;
  box-shadow: var(--shadow-sm);
}
.button:hover, .interactive-card:hover, .tab-button:hover, .segment-button:hover, .chart-row:hover, .site-card:hover {
  transform: translateY(-1px);
}
.button:active, .interactive-card:active, .tab-button:active, .segment-button:active {
  transform: translateY(0);
}
.button-secondary {
  background: var(--surface-3);
  color: var(--text);
}
.button-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.small-button {
  padding: .55rem .75rem;
  font-size: .92rem;
}
.topbar {
  display: grid;
  grid-template-columns: 1.8fr auto;
  gap: 1rem;
  padding: 1rem 1.1rem;
  margin-top: 1rem;
  position: sticky;
  top: .5rem;
  z-index: 20;
}
.topbar-group {
  align-items: end;
}
.topbar-actions {
  justify-content: flex-end;
  align-items: center;
}
.scenario-badge, .results-pill {
  padding: .7rem .95rem;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 700;
  white-space: nowrap;
}
.layout { display: grid; gap: 1rem; margin-top: 1rem; }
.tabs { margin-top: 1rem; }
.tab-button {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: .75rem 1rem;
  font-weight: 700;
  transition: .18s ease;
}
.tab-button.is-active, .segment-button.is-active {
  background: var(--primary);
  color: #fff;
  border-color: transparent;
}
.tab-panel { display: none; gap: 1rem; }
.tab-panel.is-active { display: grid; animation: fadeIn .2s ease; }
@keyframes fadeIn { from { opacity: .5; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
.summary-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1rem;
}
.summary-card {
  border: 1px solid var(--border);
  padding: 1rem;
  text-align: left;
}
.interactive-card {
  cursor: pointer;
  transition: .18s ease;
}
.summary-kicker {
  display: inline-flex;
  margin-bottom: .55rem;
  padding: .35rem .6rem;
  border-radius: 999px;
  background: var(--surface-3);
  color: var(--muted);
  font-size: .78rem;
  font-weight: 700;
}
.summary-label { color: var(--muted); font-weight: 700; margin-bottom: .3rem; }
.summary-value { font-size: clamp(1.45rem, 3.8vw, 2.2rem); font-weight: 800; letter-spacing: -.04em; margin-bottom: .45rem; }
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}
.chart-card { padding: 1rem; }
.chart-card.span-2 { grid-column: span 2; }
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: start;
  margin-bottom: 1rem;
}
.section-head.tight { margin-bottom: .8rem; }
.field, .compact-field { display: grid; gap: .45rem; min-width: 0; }
label, .field-label { font-weight: 700; font-size: .94rem; }
input[type="text"], input[type="number"], input[type="date"], select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: .8rem .9rem;
  background: var(--surface-2);
  color: var(--text);
}
input[type="checkbox"] { inline-size: 1rem; block-size: 1rem; accent-color: var(--primary); }
.segment-button {
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  border-radius: 12px;
  padding: .72rem .9rem;
  font-weight: 700;
  transition: .18s ease;
}
.slider-field { min-width: 280px; flex: 1; }
.slider-meta {
  display: flex;
  justify-content: space-between;
  gap: .75rem;
}
.availability-slider {
  width: 100%;
  accent-color: var(--primary);
}
.slider-ticks {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  font-size: .82rem;
  color: var(--muted);
}
.slider-ticks span:nth-child(2), .slider-ticks span:nth-child(3) { text-align: center; }
.slider-ticks span:last-child { text-align: right; }
.meter-track {
  display: flex;
  width: 100%;
  height: 18px;
  border-radius: 999px;
  overflow: hidden;
  background: var(--surface-3);
  border: 1px solid var(--border);
}
.meter-fill {
  min-width: 0;
  transition: width .35s ease;
}
.meter-fill-primary { background: linear-gradient(90deg, var(--primary), #5f8fff); }
.meter-fill-danger { background: linear-gradient(90deg, #ff8b8b, var(--danger)); }
.meter-legend {
  display: flex;
  justify-content: space-between;
  gap: .75rem;
  margin-top: .85rem;
  font-size: .92rem;
  color: var(--muted);
  flex-wrap: wrap;
}
.legend-dot {
  display: inline-block;
  inline-size: .72rem;
  block-size: .72rem;
  border-radius: 50%;
  margin-right: .4rem;
}
.legend-dot.is-primary { background: var(--primary); }
.legend-dot.is-danger { background: var(--danger); }
.stacked-bars { display: grid; gap: .75rem; }
.stack-row, .chart-row {
  display: grid;
  gap: .45rem;
}
.row-head {
  display: flex;
  justify-content: space-between;
  gap: .75rem;
  align-items: center;
  font-size: .92rem;
}
.stack-track, .bar-track {
  height: 14px;
  border-radius: 999px;
  overflow: hidden;
  background: var(--surface-3);
  border: 1px solid var(--border);
  display: flex;
}
.stack-segment, .bar-fill {
  transition: width .35s ease;
}
.is-protected { background: linear-gradient(90deg, var(--success), #5bd48b); }
.is-reduced { background: linear-gradient(90deg, var(--warning), #ffc865); }
.is-stopped { background: linear-gradient(90deg, var(--danger), #ff9f9f); }
.chart-list { display: grid; gap: .75rem; }
.chart-row {
  padding: .7rem .8rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-2);
  transition: .18s ease;
}
.chart-row button {
  all: unset;
  cursor: pointer;
  display: grid;
  gap: .45rem;
}
.bar-fill-primary { background: linear-gradient(90deg, var(--primary), #88adff); }
.bar-fill-muted { background: linear-gradient(90deg, var(--surface-3), var(--border)); }
.bar-fill-success { background: linear-gradient(90deg, var(--success), #74e59f); }
.bar-fill-warning { background: linear-gradient(90deg, var(--warning), #ffca6e); }
.bar-fill-danger { background: linear-gradient(90deg, var(--danger), #ff9f9f); }
.toolbar-card, .table-card, .footer, .chart-card, .priority-board > div, .site-card {
  padding: 1rem;
}
.toolbar-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: .85rem;
}
.table-wrap { overflow-x: auto; }
table { width: 100%; min-width: 980px; border-collapse: collapse; }
th, td {
  padding: .85rem .75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
thead th {
  font-size: .86rem;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface-2) 88%, var(--bg));
}
tbody tr:hover { background: var(--primary-soft); }
.status-pill, .priority-pill, .site-meta-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: .35rem .65rem;
  font-size: .82rem;
  font-weight: 700;
}
.priority-pill, .site-meta-tag { background: var(--surface-3); color: var(--text); }
.status-protected { background: var(--success-soft); color: var(--success); }
.status-reduced { background: var(--warning-soft); color: var(--warning); }
.status-stopped { background: var(--danger-soft); color: var(--danger); }
.icon-button {
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  border-radius: 10px;
  padding: .5rem .68rem;
  font-weight: 700;
}
.mobile-cards {
  display: none;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .85rem;
  margin-top: .9rem;
}
.site-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface-2);
  box-shadow: var(--shadow-sm);
  transition: .18s ease;
  display: grid;
  gap: .75rem;
}
.site-card-head, .site-meta, .site-stats, .site-actions {
  display: flex;
  gap: .5rem;
  justify-content: space-between;
  flex-wrap: wrap;
}
.site-title {
  font-weight: 800;
  line-height: 1.3;
}
.site-subtitle { color: var(--muted); font-size: .92rem; }
.metric-chip {
  border-radius: 12px;
  background: var(--surface-3);
  padding: .55rem .65rem;
  min-width: calc(50% - .5rem);
}
.metric-chip strong { display: block; font-size: .95rem; }
.metric-chip span { color: var(--muted); font-size: .8rem; }
.empty-state {
  text-align: center;
  padding: 2rem 1rem;
  border: 1px dashed var(--border);
  border-radius: 16px;
  margin-top: 1rem;
}
.is-hidden { display: none !important; }
.split-layout {
  display: grid;
  grid-template-columns: 1.2fr .9fr;
  gap: 1rem;
}
.priority-board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .8rem;
}
.priority-item {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface-2);
  padding: .9rem;
  display: grid;
  gap: .55rem;
}
.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.sample-links {
  margin: .8rem 0 1rem;
}
.form-grid-block details summary,
.editor-details summary {
  cursor: pointer;
  font-weight: 800;
  margin-bottom: .8rem;
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .85rem;
}
.check-stack { align-content: center; }
.check-row { display: flex; gap: .55rem; align-items: center; }
.footer { display: grid; gap: .5rem; margin-top: 1rem; }
.message {
  border-radius: 14px;
  padding: .9rem 1rem;
  border: 1px solid var(--border);
  background: var(--surface-3);
}
.message-success { background: var(--success-soft); color: var(--success); }
.message-error { background: var(--danger-soft); color: var(--danger); }
.message-info { background: var(--primary-soft); color: var(--primary); }
@media (max-width: 1240px) {
  .summary-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .dashboard-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .chart-card.span-2 { grid-column: auto; }
  .toolbar-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .split-layout, .form-grid { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .hero, .topbar, .section-head { grid-template-columns: 1fr; display: grid; }
  .topbar { position: static; }
  .summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .toolbar-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .priority-board { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .app-shell { width: min(calc(100% - .7rem), var(--max-width)); padding-top: .7rem; }
  .hero, .topbar, .toolbar-card, .table-card, .chart-card, .footer { padding: .9rem; }
  .summary-grid, .dashboard-grid, .toolbar-grid, .mobile-cards, .tool-grid { grid-template-columns: 1fr; }
  .topbar-group, .hero-actions, .toolbar-actions { align-items: stretch; }
  .mobile-cards { display: grid; }
  .table-wrap { display: none; }
}

.brand-link {
  display: inline-flex;
  align-items: center;
  margin-bottom: var(--space-4);
  text-decoration: none;
}
.brand-logo {
  width: min(260px, 42vw);
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 4px 12px rgba(15, 23, 42, 0.08));
}
.dataset-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .75rem 1rem;
  border-radius: 999px;
  background: var(--surface-3);
  color: var(--text);
  border: 1px solid var(--border);
  font-weight: 700;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: var(--space-5);
}
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .65rem;
}
.footer-links a {
  color: var(--primary);
  font-weight: 600;
}
.footer-meta {
  margin-top: .85rem;
  color: var(--muted);
  font-size: .95rem;
}
.about-shell {
  width: min(calc(100% - 2rem), 980px);
  margin: 0 auto;
  padding: 2rem 0 3rem;
}
.about-stack {
  display: grid;
  gap: 1rem;
}
.about-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 1.25rem 1.4rem;
}
.about-card ul {
  margin: .5rem 0 0 1.2rem;
  color: var(--muted);
}
.about-toplink {
  display: inline-flex;
  margin-bottom: 1rem;
  font-weight: 700;
}
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}