:root {
  --bg: #0f1420;
  --bg-panel: #161d2e;
  --bg-card: #1d2740;
  --border: #2a3654;
  --text: #e6ebf5;
  --muted: #9aa7c2;
  --accent: #4f9cf9;
  --accent-2: #7ee0b7;
  --radius: 14px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

body {
  background: radial-gradient(1200px 600px at 20% -10%, #1a2540 0%, var(--bg) 55%);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  padding-bottom: 60px;
}

.hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 56px 24px 8px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.subtitle {
  color: var(--muted);
  max-width: 640px;
  margin: 14px auto 0;
  font-size: 1.02rem;
}

.layout {
  max-width: 1200px;
  margin: 40px auto 0;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 340px 1fr 300px;
  gap: 22px;
  align-items: start;
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}

.panel h2 {
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 18px;
}

/* ---------------- sliders ---------------- */

.controls { position: sticky; top: 18px; }

.slider-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 14px;
}

.slider-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}

.slider-name {
  font-weight: 600;
  font-size: 0.98rem;
}

.slider-value {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--accent-2);
  white-space: nowrap;
}

.slider-sub {
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 14px;
}

.slider-rev {
  font-size: 0.85rem;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--border);
}

.slider-rev .amt { font-weight: 700; color: var(--accent); }

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 4px;
  background: linear-gradient(to right, var(--accent) 0%, var(--accent) var(--fill, 0%), #33405f var(--fill, 0%), #33405f 100%);
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--accent);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
  transition: transform 0.1s;
}

input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.15); }

input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--accent);
  cursor: pointer;
}

/* ---------------- presets ---------------- */

.presets {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 16px;
}

.preset-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 6px;
  font-size: 0.82rem;
  cursor: pointer;
  transition: all 0.15s;
}

.preset-btn:hover { background: var(--bg-card); border-color: var(--accent); }
.preset-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ---------------- donut ---------------- */

.chart-panel {
  text-align: center;
}

#donut-wrap { position: relative; max-width: 480px; margin: 0 auto; }

#donut { width: 100%; height: auto; }

.slice {
  transition: stroke-dasharray 0.3s ease, stroke-dashoffset 0.3s ease, opacity 0.25s;
  cursor: pointer;
}
.slice:hover { opacity: 0.85; }

.donut-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  text-align: center;
  padding: 0 18%;
}

.center-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.center-big {
  font-size: clamp(1.8rem, 4.5vw, 2.7rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--accent-2);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.center-sub { color: var(--text); font-size: 0.95rem; }
.center-year { color: var(--muted); font-size: 0.8rem; margin-top: 4px; }

.legend {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 8px 16px;
  margin-top: 20px;
  text-align: left;
}

.legend li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text);
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 6px;
  transition: background 0.15s;
}

.legend li:hover { background: var(--bg-card); }

.legend .swatch {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex: none;
}

.legend .lbl { flex: 1; }
.legend .lbl small { display: block; color: var(--muted); font-size: 0.74rem; }
.legend .amt { font-weight: 700; font-variant-numeric: tabular-nums; }

/* ---------------- summary ---------------- */

.summary .stat {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--border);
}

.stat-label { color: var(--muted); font-size: 0.9rem; }
.stat-value {
  font-weight: 800;
  font-size: 1.05rem;
  font-variant-numeric: tabular-nums;
}

.note {
  margin-top: 14px;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg-card);
  border-left: 3px solid var(--accent-2);
  border-radius: 6px;
  padding: 10px 12px;
}

.disclaimer {
  margin-top: 14px;
  font-size: 0.78rem;
  color: var(--muted);
}

/* ---------------- data table + sources ---------------- */

.data {
  max-width: 1200px;
  margin: 26px auto 0;
  overflow-x: auto;
}

.data h2 { margin-bottom: 14px; }

.tablewrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  min-width: 720px;
}

th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

.sources {
  list-style: none;
  margin-top: 18px;
  font-size: 0.84rem;
}

.sources li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
}

.sources a { color: var(--accent); text-decoration: none; }
.sources a:hover { text-decoration: underline; }

footer {
  max-width: 1200px;
  margin: 30px auto 0;
  padding: 0 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.78rem;
}

@media (max-width: 1020px) {
  .layout { grid-template-columns: 1fr; }
  .controls { position: static; }
  .chart-panel { order: -1; } /* big-picture donut first on mobile */
  #donut-wrap { max-width: min(78vw, 440px); }
  .preset-btn { min-height: 46px; }
}

@media (max-width: 600px) {
  body { padding-bottom: 40px; }
  .hero { padding: 32px 16px 4px; }
  .layout { margin-top: 24px; padding: 0 12px; gap: 14px; }
  .panel { padding: 16px; }
  .panel h2 { margin-bottom: 14px; }
  .slider-card { padding: 12px 12px 14px; }
  input[type="range"] { height: 10px; border-radius: 5px; }
  input[type="range"]::-webkit-slider-thumb {
    width: 26px;
    height: 26px;
    border-width: 4px;
  }
  input[type="range"]::-moz-range-thumb {
    width: 26px;
    height: 26px;
    border-width: 4px;
  }
  .presets { grid-template-columns: 1fr; }
  .preset-btn { font-size: 0.9rem; min-height: 44px; }
  .slider-name { font-size: 1rem; }
  .slider-sub { font-size: 0.78rem; }
  #donut-wrap { max-width: 86vw; }
  .donut-center { padding: 0 15%; }
  .center-big { font-size: 1.9rem; }
  .legend { grid-template-columns: 1fr; }
  .legend li { font-size: 0.92rem; padding: 7px 4px; }
  .stat-value { font-size: 0.98rem; }
  .data { margin-top: 18px; padding: 16px 12px; }
}