:root {
  --bg: #000000;
  --panel: #0b0b0b;
  --panel-2: #111111;
  --text: #f5f5f5;
  --muted: #bdbdbd;

  /* Thème noir */
  --accent: #ffffff;
  --accent-2: #d4d4d4;

  --border: rgba(255, 255, 255, 0.14);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
  --radius: 14px;

  /* Accent vert */
  --green: #22c55e;
  --green-bg: rgba(34, 197, 94, 0.16);
  --green-border: rgba(34, 197, 94, 0.35);

  /* Accent mauve (titre du site) */
  --brand-purple: #a855f7;

  /* Accent orange (footer) */
  --footer-orange: #f97316;
  --footer-orange-2: #fb923c;
  --footer-orange-border: rgba(249, 115, 22, 0.35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji",
    "Segoe UI Emoji";
  line-height: 1.5;
}

a { color: inherit; }

.container {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0.5rem;
  background: var(--panel);
  color: var(--text);
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  z-index: 10;
}

.skip-link:focus {
  left: 0.75rem;
}

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(0, 0, 0, 0.72);
  border-bottom: 1px solid var(--border);
  z-index: 5;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand__name {
  color: var(--brand-purple);
}

.brand__logo {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.08));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.nav {
  display: flex;
  gap: 0.25rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav__link {
  text-decoration: none;
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--muted);
}

.nav__link:hover,
.nav__link:focus-visible {
  color: var(--text);
  border-color: var(--border);
  background: rgba(20, 20, 20, 0.75);
  outline: none;
}

.hero {
  padding: 4.5rem 0 2.5rem;
}

.hero h1 {
  font-size: clamp(1.8rem, 3.4vw, 3rem);
  line-height: 1.15;
  margin: 0 0 0.75rem;
  color: #ff0000;
}

/* Couleur du premier paragraphe de la page (premier <p> dans <main>) */
main p:first-of-type {
  color: orange;
}

/* Couleur du troisième paragraphe de la page (troisième <p> dans <main>) */
main p:nth-of-type(3) {
  color: var(--green);
}

.hero__subtitle {
  margin: 0 0 1.2rem;
  color: var(--muted);
  max-width: 70ch;
}

.hero__actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.button {
  display: inline-block;
  padding: 0.65rem 1rem;
  border-radius: 999px;
  text-decoration: none;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(212, 212, 212, 0.92));
  color: #000000;
  font-weight: 700;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: var(--shadow);
}

.button:hover,
.button:focus-visible {
  filter: brightness(1.04);
  outline: none;
}

.button--secondary {
  background: rgba(20, 20, 20, 0.75);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
}

.section {
  padding: 2.5rem 0;
}

.section--alt {
  background: rgba(16, 16, 16, 0.65);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section h2 {
  margin: 0 0 1.2rem;
  font-size: 1.6rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .grid { grid-template-columns: 1fr; }
}

.card {
  background: rgba(12, 12, 12, 0.85);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
}

.card p {
  margin: 0 0 0.75rem;
  color: var(--muted);
}

.tags {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(18, 18, 18, 0.9);
  color: var(--text);
  font-size: 0.9rem;
}

.tag--green {
  border-color: var(--green-border);
  background: var(--green-bg);
  color: var(--green);
}

.facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

@media (max-width: 900px) {
  .facts { grid-template-columns: 1fr; }
}

.fact {
  padding: 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(18, 18, 18, 0.75);
}

.fact h3 { margin: 0 0 0.35rem; }
.fact p { margin: 0; color: var(--muted); }

.note {
  margin: 1rem 0 0;
  color: var(--muted);
}

.about__note {
  margin: 0.9rem 0 0;
  color: var(--muted);
  max-width: 80ch;
}

.info-card {
  background: rgba(12, 12, 12, 0.85);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
  max-width: 70ch;
}

.info-card p {
  margin: 0;
  color: var(--muted);
}

.info-card strong {
  color: var(--text);
}

.site-footer {
  padding: 2rem 0;
  background: linear-gradient(180deg, rgba(249, 115, 22, 0.16), rgba(0, 0, 0, 0));
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  border: 1px solid var(--footer-orange-border);
  border-radius: 999px;
  padding: 1rem 1.25rem;
  background: rgba(249, 115, 22, 0.06);
  color: rgba(255, 255, 255, 0.78);
}

.footer-inner p {
  margin: 0;
}

.footer-inner #year {
  color: var(--footer-orange-2);
  font-weight: 700;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.78);
  text-decoration: none;
  border-bottom: 1px dotted rgba(249, 115, 22, 0.65);
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: #ffffff;
  outline: none;
  border-bottom-color: rgba(251, 146, 60, 0.95);
}