:root {
  --bg: #f4efe4;
  --paper: #fffdf6;
  --ink: #1d1914;
  --muted: #5c5348;
  --line: #d7cbb6;
  --green: #3d7a2e;
  --green-soft: #e5f0d8;
  --gold: #9a6b20;
  --water: #1d6f86;
  --sans: "Noto Sans Devanagari", "Nirmala UI", "Mangal", "Avenir Next", sans-serif;
  --serif: "Noto Serif Devanagari", "Iowan Old Style", Georgia, serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); }
body { min-height: 100vh; }
a { color: var(--water); }

.top {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem 1.1rem 0.85rem;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.brand { font-family: var(--serif); font-size: 1.65rem; margin: 0; font-weight: 650; }
.sub { margin: 0.25rem 0 0; color: var(--muted); max-width: 36rem; line-height: 1.45; }
.lang {
  display: flex;
  gap: 0.35rem;
  flex-shrink: 0;
}
.lang button {
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  padding: 0.45rem 0.7rem;
  font: inherit;
  font-size: 0.95rem;
  min-height: 2.5rem;
  cursor: pointer;
}
.lang button[aria-pressed="true"] {
  background: var(--green);
  color: #fff;
  border-color: var(--green);
}

.how {
  margin: 0;
  padding: 0.7rem 1.1rem;
  background: var(--green-soft);
  color: #24361c;
  font-size: 1.02rem;
  line-height: 1.45;
}
.how strong { display: block; margin-bottom: 0.15rem; }

#map {
  height: min(58vh, 520px);
  min-height: 280px;
  background: #c9c2b2;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0.75rem 1.1rem 0.2rem;
}
.chips button {
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  padding: 0.55rem 0.85rem;
  font: inherit;
  font-size: 1.02rem;
  min-height: 2.7rem;
  cursor: pointer;
}
.chips button[aria-pressed="true"] {
  background: var(--green);
  color: #fff;
  border-color: var(--green);
}

.legend {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.35rem 1.1rem 0.7rem;
  color: var(--muted);
  font-size: 0.92rem;
}
.legend-bar {
  height: 10px;
  width: 7rem;
  border-radius: 99px;
  background: linear-gradient(90deg, #c4a15a, #d7e38a, #3d7a2e);
}

.timeline {
  padding: 0.85rem 1.1rem 1.1rem;
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.timeline-row { display: flex; align-items: center; gap: 0.55rem; }
#play {
  min-width: 7.5rem;
  min-height: 3rem;
  border: 0;
  background: var(--gold);
  color: #fff;
  font: inherit;
  font-size: 1.02rem;
  cursor: pointer;
  padding: 0.45rem 0.7rem;
}
#prev, #next {
  width: 2.7rem;
  min-height: 3rem;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: 1.55rem;
  line-height: 1;
  cursor: pointer;
  padding: 0;
}
#prev:disabled, #next:disabled {
  opacity: 0.35;
  cursor: default;
}
input[type="range"] { flex: 1; accent-color: var(--green); min-height: 2rem; }
.when { min-width: 9rem; }
.date-readout { font-size: 1.2rem; font-weight: 650; }
.era { color: var(--gold); font-size: 0.92rem; margin-top: 0.1rem; }

.story {
  margin: 0.9rem 1.1rem 0;
  padding: 0.9rem 1rem;
  background: var(--paper);
  border: 1px solid var(--line);
}
.story h2 { font-family: var(--serif); font-size: 1.15rem; margin: 0 0 0.4rem; }
.story p { margin: 0; line-height: 1.5; font-size: 1.08rem; }

.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.65rem;
  padding: 0.85rem 1.1rem;
}
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 0.75rem 0.8rem;
}
.card .k { color: var(--muted); font-size: 0.92rem; }
.card .v { font-size: 1.55rem; font-weight: 700; margin: 0.15rem 0; }
.card .h { color: var(--muted); font-size: 0.88rem; }

.charts { padding: 0 1.1rem 1rem; display: grid; gap: 0.75rem; }
.chart-box { background: var(--paper); border: 1px solid var(--line); padding: 0.75rem 0.85rem; }
.chart-box h2 { font-family: var(--serif); font-size: 1.1rem; margin: 0 0 0.4rem; }
.chart-frame { position: relative; height: 200px; }

.note, footer {
  padding: 0 1.1rem 1.2rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
}
footer { padding-bottom: 2rem; }

@media (min-width: 800px) {
  .cards { grid-template-columns: repeat(4, 1fr); }
  #map { height: 62vh; }
  .brand { font-size: 1.9rem; }
}