:root {
  --ink: #1a1a1a;
  --ink-light: #4a4a4a;
  --line: #c9c9c9;
  --line-strong: #8a8a8a;
  --bg: #ffffff;
  --bg-alt: #f4f4f2;
  --accent: #333333;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Georgia", "Times New Roman", Cambria, serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
}

header {
  border-bottom: 1px solid var(--line-strong);
  padding: 2rem 1.5rem 1.5rem;
  text-align: left;
  max-width: 900px;
  margin: 0 auto;
}

.kicker {
  margin: 0 0 0.6rem;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-light);
  border: 1px solid var(--line-strong);
  display: inline-block;
  padding: 0.2rem 0.6rem;
}

header h1 {
  margin: 0 0 0.5rem;
  font-size: 1.7rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
}

header .subtitle {
  margin: 0;
  font-size: 1rem;
  color: var(--ink-light);
  font-style: italic;
}

main {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem;
}

section {
  background: var(--bg);
  border: 1px solid var(--line);
  padding: 1.3rem 1.6rem;
  margin-bottom: 1.6rem;
}

section h2 {
  color: var(--ink);
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: 0;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.5rem;
}

section h3 {
  color: var(--ink);
  font-size: 1rem;
  font-weight: 700;
  margin: 1.6rem 0 0.5rem;
}

.method ul {
  padding-left: 1.3rem;
  margin: 0.6rem 0 0;
}
.method li { margin-bottom: 0.7rem; }

/* ------------------------------------------------------------ */
/* Figures (visuels de resultats)                                 */
/* ------------------------------------------------------------ */
figure {
  margin: 1rem 0 1.4rem;
  padding: 0;
}
figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line-strong);
}
figcaption {
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 0.82rem;
  color: var(--ink-light);
  font-style: italic;
  margin-top: 0.5rem;
  line-height: 1.45;
}

.caution {
  background: var(--bg-alt);
  border-left: 3px solid var(--line-strong);
}

/* ------------------------------------------------------------ */
/* Section fenetre geographique / tableau                        */
/* ------------------------------------------------------------ */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 0.88rem;
}
.data-table th, .data-table td {
  border: 1px solid var(--line);
  padding: 0.5rem 0.6rem;
  text-align: left;
  vertical-align: top;
}
.data-table thead th {
  background: var(--bg-alt);
  font-weight: 700;
  color: var(--ink);
}
.data-table tbody tr:nth-child(even) { background: #fafafa; }

/* ------------------------------------------------------------ */
/* Controles / carte                                              */
/* ------------------------------------------------------------ */
.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.9rem;
  font-family: "Segoe UI", Arial, sans-serif;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

select, button, input[type="range"] {
  font-family: inherit;
  font-size: 0.92rem;
}

select {
  padding: 0.4rem 0.6rem;
  border-radius: 2px;
  border: 1px solid var(--line-strong);
  background: white;
  color: var(--ink);
}

#scenario-select {
  min-width: 340px;
}

.scenario-caption {
  font-size: 0.85rem;
  color: var(--ink-light);
  font-style: italic;
}

.day-controls {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 0.7rem 1rem;
}

#play-btn {
  background: var(--ink);
  color: white;
  border: 1px solid var(--ink);
  border-radius: 2px;
  padding: 0.5rem 1rem;
  cursor: pointer;
  font-weight: 600;
  white-space: nowrap;
}
#play-btn:hover { background: #000; }
#play-btn.playing { background: var(--ink-light); }

#day-slider {
  flex: 1 1 260px;
  min-width: 180px;
  accent-color: var(--ink);
}

.day-controls label {
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}

.speed-label { margin-left: 0.5rem; }

#map {
  width: 100%;
  height: 520px;
  border: 1px solid var(--line-strong);
  z-index: 0;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  align-items: center;
  font-size: 0.83rem;
  margin-top: 0.9rem;
  color: var(--ink-light);
  font-family: "Segoe UI", Arial, sans-serif;
}

.dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-right: 5px;
  vertical-align: middle;
}
.dot.particle { background: #555555; opacity: 0.8; }
.dot.release { background: #b03a2e; border: 1px solid white; box-shadow: 0 0 0 1px #b03a2e; }
.dot.marana { background: #2f5233; border: 1px solid white; box-shadow: 0 0 0 1px #2f5233; }

.loading {
  font-style: italic;
  color: #999;
}

footer {
  text-align: center;
  padding: 1.3rem;
  color: #888;
  font-size: 0.83rem;
  font-family: "Segoe UI", Arial, sans-serif;
  border-top: 1px solid var(--line);
}

@media (max-width: 600px) {
  #scenario-select { min-width: 0; width: 100%; }
  .control-group { width: 100%; }
  #map { height: 400px; }
}