:root {
  --bg: #0d0f12;
  --panel: #141923;
  --panel-2: #1b2330;
  --text: #ccc5bc;
  --muted: #d7d7d6;
  --accent: #4fd1c5;
  --border: #223041;
  --todo: #f39c12;
  --buy: #e74c3c;
  --info: #3498db;
  --done: #2ecc71;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: radial-gradient(
      circle at 20% 20%,
      rgba(79, 209, 197, 0.08),
      transparent 25%
    ),
    radial-gradient(circle at 80% 0%, rgba(52, 152, 219, 0.08), transparent 25%),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
}
header {
  padding: 24px;
  background: linear-gradient(
    120deg,
    rgba(79, 209, 197, 0.16),
    rgba(52, 152, 219, 0.1)
  );
  border-bottom: 1px solid var(--border);
}
h1 {
  margin: 0 0 8px 0;
  font-size: 22px;
  letter-spacing: 0.2px;
  color: var(--accent);
}
h2 {
  margin: 18px 0 8px 0;
  font-size: 20px;
  color: var(--accent);
}
h3 {
  margin: 14px 0 6px 0;
  font-size: 16px;
  letter-spacing: 0.4px;
  color: var(--accent);
}
p {
  margin: 0 0 10px 0;
  color: var(--muted);
}
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
ul {
  padding-left: 18px;
  margin: 8px 0 12px 0;
  color: var(--muted);
}
li {
  margin-bottom: 6px;
}
code {
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px solid var(--border);
}
pre {
  font-family: "Fira Code", "Courier New", monospace;
  font-size: 13px;
  background: #181b22;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  color: var(--text);
  overflow-x: auto;
  white-space: pre;
}
.container {
  padding: 0 24px 48px;
  max-width: 1200px;
  margin: 0 auto;
}
.panel {
  background: linear-gradient(145deg, var(--panel), var(--panel-2));
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 14px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
  margin-bottom: 12px;
}
.panel-colorrev {
  background: #e9edf3;
  color: #0e1116;
  border: 1px solid #c8ceda;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.18);
}
.panel-colorrev h1,
.panel-colorrev h2,
.panel-colorrev h3,
.panel-colorrev p,
.panel-colorrev ul {
  color: #0e1116;
}
.panel-colorrev ul {
  color: #2c3340;
}

/* Diagrams with gentle horizontal pan for wide images */
.diagram-scroll {
  overflow: hidden;
  position: relative;
  margin: 12px 0;
  border: 1px solid #2c3340;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.02);
}
.diagram-scroll img {
  display: block;
  max-width: none;
  width: 1100px;
  animation: pan-x 16s ease-in-out infinite alternate;
}
@keyframes pan-x {
  from { transform: translateX(0); }
  to   { transform: translateX(-120px); }
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 12px;
  padding: 20px;
}
.card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  background: #141923;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.22);
}
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 0 0;
}
.nav a {
  padding: 8px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
}
.nav a:hover {
  background: rgba(79, 209, 197, 0.12);
}
.nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 8px;
  padding-top: 10px;
}
.nav-grid a {
  display: block;
  padding: 8px 10px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
  text-align: center;
}
.nav-grid a:hover {
  background: rgba(79, 209, 197, 0.12);
}
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 10px;
  padding: 0 20px 20px;
}
.links-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.links-grid li {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #141923;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.22);
  color: var(--muted);
}
.links-grid li a {
  display: inline-block;
  margin-bottom: 6px;
  font-weight: 600;
}
.tag {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.content {
  margin: 0 auto;           /* centre le bloc et crée une marge à gauche/droite */
  padding: 0 24px 48px;     /* ~24px de marge interne à gauche/droite */
}

.todo {
  background: rgba(243, 156, 18, 0.16);
  color: #fdbc52;
  border: 1px solid rgba(243, 156, 18, 0.35);
}
.buy {
  background: rgba(231, 76, 60, 0.14);
  color: #ff8b7c;
  border: 1px solid rgba(231, 76, 60, 0.35);
}
.info {
  background: rgba(52, 152, 219, 0.14);
  color: #7cc6ff;
  border: 1px solid rgba(52, 152, 219, 0.35);
}
.done {
  background: rgba(46, 204, 113, 0.14);
  color: #7ae3a6;
  border: 1px solid rgba(46, 204, 113, 0.35);
}
.plan-index {
  font-size: 12px;
}
.d0 h1,
.d1 h2,
.d2 h3 {
  background:transparent;
  color: var(--accent);
  margin: 0 0 8px 0;
}
#pannel-gris-clair {
  background: #41444a;
  color: #1a1d25;
  border-radius: 10px;
  border: 1px solid #d0d4dc;
  padding: 12px;
}
body.roadmap .content {
  padding-left: 40px;
}
.details-link {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 6px;
  border-radius: 8px;
  color: var(--text);
  text-decoration: underline;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}
.details-link:hover {
  text-decoration: none;
  background: rgba(52, 152, 219, 0.14);
  border: 1px solid rgba(52, 152, 219, 0.35);
  color: #7cc6ff;
}
.details-link:active {
  background: rgba(52, 152, 219, 0.28);
}

/* Blocs code et terminal */
.code-block,
#code {
  display: block;
  background: #2f3238;
  color: #e6e6e6;
  border-radius: 10px;
  padding: 12px 14px;
  border: 1px solid rgba(0, 0, 0, 0.35);
  font-family: "Fira Code", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13px;
  overflow-x: auto;
  white-space: pre;
}
.terminal-block,
#terminal {
  display: block;
  background: #0f1216;
  color: #f6f6f6;
  border-radius: 6px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  font-family: "Fira Code", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 13px;
  overflow-x: auto;
  white-space: pre;
}
.badge-ready {
  display: inline-block;
  padding: 4px 10px;
  margin-left: 8px;
  border-radius: 999px;
  background: linear-gradient(120deg, #2ecc71, #27ae60);
  color: #0a0f14;
  font-weight: 700;
  font-size: 0.85em;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}
.toc {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 10px;
}
.toc a {
  display: block;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  color: var(--text);
}
.toc a span {
  color: var(--muted);
  font-size: 12px;
}
.section-header {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}
.chapter-number {
  padding: 4px 8px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--accent);
  font-weight: 700;
}
footer {
  padding: 18px;
  color: var(--muted);
  text-align: center;
  border-top: 1px solid var(--border);
  font-size: 12px;
  margin-top: 12px;
}