/* style.css – candidature Alpha to Omega */
:root {
  --paper: #f5f3f9;
  --ink: #1b1730;
  --muted: #55506b;
  --violet: #5b2fa8;
  --tint: #e9e2f7;
  --line: #d9d4e6;
  --focus: #5b2fa8;
  --gutter: clamp(1.25rem, 5vw, 3rem);
  --sans: "Bricolage Grotesque", "Helvetica Neue", Arial, sans-serif;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #14111f;
    --ink: #eeeaf8;
    --muted: #b3acc9;
    --violet: #b79cff;
    --tint: #241d3a;
    --line: #3a3354;
    --focus: #b79cff;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.125rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, dt, nav, .top-name, b { font-family: var(--sans); }

a { color: var(--violet); text-underline-offset: 0.2em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 2px; }

.skip { position: absolute; left: -999px; top: 0.5rem; background: var(--ink); color: var(--paper); padding: 0.5rem 1rem; z-index: 10; }
.skip:focus { left: 0.5rem; }

main > section, .top, footer {
  width: min(1120px, 100% - 2 * var(--gutter));
  margin-inline: auto;
}

/* En-tête */
.top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  padding-block: 1.5rem;
}
.top-name { font-weight: 700; color: var(--ink); text-decoration: none; }
.top nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1.5rem; font-size: 0.95rem; font-weight: 500; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--violet); text-decoration: underline; }

/* Héros */
.hero { padding-block: clamp(3rem, 9vw, 7rem) clamp(3rem, 7vw, 5rem); }
.hero h1 {
  margin: 0;
  font-weight: 800;
  font-size: clamp(3.4rem, 12vw, 9rem);
  line-height: 0.92;
  letter-spacing: -0.045em;
  font-variation-settings: "opsz" 96;
}
.hero h1 span { display: block; }
.hero h1 span + span { color: var(--violet); margin-left: clamp(1rem, 6vw, 5rem); }
.hero-text { max-width: 38rem; margin-top: clamp(2rem, 5vw, 3.5rem); margin-left: clamp(0rem, 6vw, 5rem); }
.lead { font-size: clamp(1.4rem, 2.6vw, 1.75rem); line-height: 1.35; margin: 0 0 1.25rem; font-weight: 500; }
.hero-text p:not(.lead) { margin: 0; color: var(--muted); }

/* Titres de section */
h2 {
  margin: 0 0 1rem;
  font-weight: 700;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
}

/* Parcours des cinq étapes */
.band {
  padding-block: clamp(3rem, 7vw, 5rem);
  border-top: 1px solid var(--line);
}
.band-head { max-width: 40rem; margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.band-head p { margin: 0; color: var(--muted); }

.route {
  list-style: none;
  margin: 0;
  padding: 0 0 0 2.25rem;
  position: relative;
}
.route::before {
  content: "";
  position: absolute;
  left: 0.55rem;
  top: 0.9rem;
  bottom: 0.9rem;
  width: 2px;
  background: var(--violet);
  transform-origin: top;
}
.route li {
  position: relative;
  display: grid;
  gap: 0.5rem 2.5rem;
  padding-block: 1.75rem;
  border-top: 1px solid var(--line);
}
.route li:first-child { border-top: 0; padding-top: 0; }
.route li::before {
  content: "";
  position: absolute;
  left: -2.25rem;
  top: 2.05rem;
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50%;
  background: var(--paper);
  border: 3px solid var(--violet);
}
.route li:first-child::before { top: 0.3rem; }
.route h3 { margin: 0; font-size: 1.35rem; line-height: 1.2; letter-spacing: -0.015em; }
.route p { margin: 0; }
.route .ask { color: var(--muted); }
.route b { color: var(--violet); font-weight: 700; }

@media (min-width: 62rem) {
  .route li { grid-template-columns: 0.8fr 1fr 1fr; align-items: start; }
  .route h3 { padding-top: 0.05rem; }
}

/* Faits du parcours */
.parcours { padding-block: clamp(3rem, 7vw, 5rem); border-top: 1px solid var(--line); }
.parcours dl { margin: 2rem 0 0; display: grid; gap: 0; }
.parcours dl > div {
  display: grid;
  gap: 0.25rem 2.5rem;
  padding-block: 1.25rem;
  border-top: 1px solid var(--line);
}
.parcours dl > div:last-child { border-bottom: 1px solid var(--line); }
dt { font-weight: 700; font-size: 1.15rem; letter-spacing: -0.01em; }
dd { margin: 0; max-width: 42rem; }
@media (min-width: 48rem) {
  .parcours dl > div { grid-template-columns: 14rem 1fr; }
}

/* IA */
.ia {
  padding: clamp(2rem, 5vw, 3.5rem);
  background: var(--tint);
  border-radius: 6px;
  margin-block: clamp(1rem, 3vw, 2rem);
}
.ia-head { max-width: 40rem; }
.ia-head p { margin: 0; color: var(--muted); }
.steps { margin: 2rem 0 1.5rem; padding-left: 1.4rem; max-width: 44rem; display: grid; gap: 0.9rem; }
.steps li::marker { font-family: var(--sans); font-weight: 700; color: var(--violet); }
.steps b { font-weight: 700; }
code { font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-size: 0.88em; background: var(--paper); padding: 0.1em 0.4em; border-radius: 3px; }
.choice { max-width: 44rem; margin: 0; }

/* Disponibilité */
.dispo { padding-block: clamp(3rem, 7vw, 5rem) clamp(2rem, 5vw, 3rem); max-width: 44rem; margin-left: max(var(--gutter), calc((100% - 1120px) / 2)); }
.dispo p { margin: 0; }

/* Contact */
.contact { padding-block: clamp(2rem, 5vw, 3rem) clamp(4rem, 9vw, 7rem); }
.contact-main { margin: 0 0 1rem; font-family: var(--sans); font-weight: 700; font-size: clamp(1.4rem, 5.4vw, 3.2rem); letter-spacing: -0.03em; line-height: 1.1; overflow-wrap: anywhere; }
.contact-more { margin: 0; display: flex; flex-wrap: wrap; gap: 0.5rem 2rem; }

footer { padding-block: 1.75rem 3rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.95rem; }
footer p { margin: 0; }

/* Mouvement : la ligne se trace pendant le défilement (si le navigateur le gère) */
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .route::before {
      animation: trace linear both;
      animation-timeline: view();
      animation-range: entry 10% cover 70%;
    }
    @keyframes trace { from { transform: scaleY(0); } to { transform: scaleY(1); } }
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}