/* Subelle — site de présentation (GitHub Pages)
   Couleurs tirées de l'app : piste de la forme d'onde, onde verte, bords des sous-titres, original violet. */
:root {
  --paper: #F4F6FA;
  --ink: #172033;
  --muted: #5A6478;
  --rule: #DCE1EA;
  --track: #1C2438;
  --track-2: #253049;
  --wave: #63D5A0;
  --cue-in: #3DC46B;
  --cue-out: #EE5B52;
  --shot: #E9C23A;
  --original: #A58BF5;
  --button: #2F6FEB;
  --button-ink: #FFFFFF;
  --measure: 38rem;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #12182A;
    --ink: #E8ECF4;
    --muted: #A2ABBD;
    --rule: #2A344B;
    --track: #1C2438;
    --track-2: #253049;
    --button: #4C86F5;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Atkinson Hyperlegible Next", "Atkinson Hyperlegible", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.55;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--wave); outline-offset: 3px; border-radius: 6px; }

.wrap { max-width: 72rem; margin: 0 auto; padding: 0 1.5rem; }

/* — Barre du haut — */
.top {
  background: var(--track);
  color: #E8ECF4;
}
.top .wrap { display: flex; align-items: center; gap: 1rem; min-height: 4rem; }
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 700; font-size: 1.15rem; text-decoration: none; }
.brand img { width: 2rem; height: 2rem; }
.top nav { margin-left: auto; display: flex; gap: 1.25rem; align-items: center; font-size: .95rem; }
.top nav a { text-decoration: none; opacity: .85; }
.top nav a:hover { opacity: 1; text-decoration: underline; text-underline-offset: .2em; }
.langs { display: flex; border: 1px solid #3A4662; border-radius: 999px; overflow: hidden; }
.langs a { padding: .2rem .7rem; opacity: .75; }
.langs a[aria-current="true"] { background: #3A4662; opacity: 1; }

/* — En-tête : texte + forme d'onde — */
.hero { background: var(--track); color: #E8ECF4; padding: 3.5rem 0 0; }
.hero h1 {
  font-size: clamp(2.3rem, 5.6vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin: 0 0 1.25rem;
  max-width: 16ch;
}
.hero .lead { font-size: 1.2rem; color: #C3CBDA; max-width: var(--measure); margin: 0 0 2rem; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; }
.button {
  display: inline-flex; align-items: center; gap: .55rem;
  background: var(--button); color: var(--button-ink);
  font-weight: 700; font-size: 1.05rem; text-decoration: none;
  padding: .8rem 1.4rem; border-radius: .7rem;
}
.button:hover { filter: brightness(1.08); }
.button svg { width: 1.1rem; height: 1.1rem; }
.fine { font-size: .92rem; color: #A9B3C6; margin: 0; }

/* La forme d'onde : la signature du site */
.strip { margin-top: 3rem; position: relative; overflow: hidden; }
.strip svg { width: 100%; height: auto; display: block; }
.strip .cue-text { font: 600 13px "Atkinson Hyperlegible Next", sans-serif; fill: #E8ECF4; }
.strip .ruler { font: 11px "Atkinson Hyperlegible Next", sans-serif; fill: #8792A8; }
.playhead { transform: translateX(0); }
@media (prefers-reduced-motion: no-preference) {
  .playhead { animation: sweep 7s cubic-bezier(.4,0,.6,1) .6s 1 both; }
  .cue { opacity: .35; animation: lit .4s ease-out both; }
  .cue.c1 { animation-delay: 1.5s; }
  .cue.c2 { animation-delay: 3.6s; }
  .cue.c3 { animation-delay: 5.6s; }
}
@keyframes sweep { from { transform: translateX(0); } to { transform: translateX(1140px); } }
@keyframes lit { from { opacity: .35; } to { opacity: 1; } }

/* — Grande capture — */
.shot-hero { background: linear-gradient(var(--track) 0 45%, var(--paper) 45%); padding: 0 0 1rem; }
.shot-hero figure { margin: 0; }
.shot-hero img { width: 100%; filter: drop-shadow(0 18px 40px rgba(10, 16, 30, .35)); }
.shot-hero figcaption { color: var(--muted); font-size: .95rem; text-align: center; margin-top: .5rem; }

/* — Fonctions, par étape du travail — */
section { padding: 4rem 0; }
section > .wrap > h2 {
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 .6rem;
}
section > .wrap > .intro { color: var(--muted); max-width: var(--measure); margin: 0 0 2.5rem; font-size: 1.1rem; }

.steps { display: grid; gap: 3rem 4rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 26rem), 1fr)); }
.step { border-left: 4px solid var(--c, var(--wave)); padding-left: 1.25rem; }
.step h3 { font-size: 1.3rem; margin: 0 0 .9rem; }
.step dl { margin: 0; }
.step dt { font-weight: 700; margin-top: .9rem; }
.step dd { margin: .15rem 0 0; color: var(--muted); max-width: var(--measure); }
.step.time { --c: var(--cue-in); }
.step.translate { --c: var(--original); }
.step.start { --c: var(--shot); }
.step.check { --c: var(--cue-out); }

/* — Captures — */
.gallery { display: grid; gap: 2.5rem 3rem; grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr)); align-items: start; }
.gallery figure { margin: 0; }
.gallery .wide { grid-column: 1 / -1; }
.gallery img { width: 100%; }
.gallery figcaption { color: var(--muted); font-size: .97rem; margin-top: .6rem; max-width: var(--measure); }

/* — Télécharger — */
.get { background: var(--track); color: #E8ECF4; }
.get .wrap { display: grid; gap: 2rem 4rem; grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr)); align-items: start; }
.get h2 { margin-top: 0; }
.get p { color: #C3CBDA; max-width: var(--measure); }
.get ul { margin: 0; padding: 0; list-style: none; }
.get li { padding: .65rem 0; border-top: 1px solid #33405C; color: #C3CBDA; }
.get li strong { color: #E8ECF4; display: block; }

footer { padding: 2.5rem 0 3rem; color: var(--muted); font-size: .92rem; }
footer p { margin: .3rem 0; max-width: 48rem; }

@media (max-width: 40rem) {
  body { font-size: 1rem; }
  .wrap { padding: 0 1rem; }
  .top nav .hide-sm { display: none; }
  .hero { padding-top: 2.25rem; }
  .hero .lead { font-size: 1.08rem; }
  .strip svg { width: 780px; max-width: none; }
  section { padding: 3rem 0; }
}

/* — Créer ou traduire : les deux scénarios mis en avant — */
.scenarios { padding-top: 3rem; }
.scenario {
  display: grid; gap: 2rem 3.5rem; align-items: center;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr);
  padding: 2.5rem 0; border-top: 1px solid var(--rule);
}
.scenario:nth-of-type(even) { grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); }
.scenario:nth-of-type(even) .text { order: 2; }
.scenario h3 { font-size: clamp(1.4rem, 2.4vw, 1.8rem); line-height: 1.2; margin: 0 0 .8rem; }
.scenario .text > p { max-width: var(--measure); }
.scenario ol { list-style: none; counter-reset: step; padding: 0; margin: 1.2rem 0; }
.scenario li { counter-increment: step; position: relative; padding: .35rem 0 .35rem 2.6rem; max-width: var(--measure); }
.scenario li::before {
  content: counter(step);
  position: absolute; left: 0; top: .3rem;
  width: 1.8rem; height: 1.8rem; border-radius: 50%;
  display: grid; place-items: center;
  font-weight: 700; font-size: .95rem;
  background: var(--c); color: #10192B;
}
.scenario.create { --c: var(--wave); }
.scenario.translate { --c: var(--original); }
.scenario .req { color: var(--muted); font-size: .95rem; }
.scenario figure { margin: 0; }
.scenario img { width: 100%; }
@media (max-width: 52rem) {
  .scenario, .scenario:nth-of-type(even) { grid-template-columns: 1fr; }
  .scenario:nth-of-type(even) .text { order: 0; }
}