:root {
  color-scheme: light dark;
  --bg: #fbfbfd;
  --panel: #ffffff;
  --border: #e4e4e7;
  --text: #18181b;
  --text-2: #52525b;
  --text-3: #71717a;
  --accent: #4f46e5;
  --accent-2: #8b5cf6;
  --accent-soft: rgba(99, 102, 241, 0.1);
  --ok: #15803d;
  --radius: 14px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f12;
    --panel: #17171c;
    --border: #2a2a33;
    --text: #f4f4f5;
    --text-2: #c4c4cd;
    --text-3: #9a9aa5;
    --accent: #818cf8;
    --accent-2: #a78bfa;
    --accent-soft: rgba(129, 140, 248, 0.14);
    --ok: #4ade80;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
main { max-width: 940px; margin: 0 auto; padding: 0 20px 64px; }
h1, h2, h3 { line-height: 1.25; }
a { color: var(--accent); }
code { font-family: ui-monospace, SFMono-Regular, monospace; font-size: 0.92em; }
.sr-only {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 44px 20px 40px;
  text-align: center;
  background:
    radial-gradient(ellipse 70% 100% at 50% 0%, var(--accent-soft), transparent 70%);
}
.site-language {
  position: absolute; top: 16px; right: 20px;
  display: flex; align-items: center; gap: 8px;
  color: var(--text-2); font-size: 12px; font-weight: 650;
}
.site-language select {
  padding: 6px 9px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--panel); color: var(--text); font: inherit;
}
.brand { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 22px; }
/* Le logo porte déjà son fond et ses coins arrondis : on ne l'habille pas. */
.logo {
  display: block; width: 34px; height: 34px; flex: 0 0 auto;
  border-radius: 10px;
  box-shadow: 0 5px 16px rgba(79, 70, 229, 0.32);
}
.brand-name { font-weight: 750; font-size: 16px; letter-spacing: -0.01em; }
.hero h1 {
  margin: 0 auto 14px;
  max-width: 15ch;
  font-size: clamp(30px, 6vw, 50px);
  font-weight: 800;
  letter-spacing: -0.03em;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--accent-2), var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.pitch { margin: 0 auto; max-width: 52ch; color: var(--text-2); font-size: 17px; }
.badges {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 10px;
  margin: 26px 0 0; padding: 0; list-style: none;
}
.badges li {
  padding: 7px 14px; border: 1px solid var(--border); border-radius: 999px;
  background: var(--panel); color: var(--text-2); font-size: 13.5px; font-weight: 600;
}

/* ---------- Outil ---------- */
.tool { margin-top: 30px; display: grid; gap: 18px; }
.editor, .result {
  padding: 16px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--panel);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}
.editor-head, .editor-foot {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.editor-head { margin-bottom: 9px; }
.editor-foot { margin-top: 12px; }
.editor-head label { font-size: 13px; font-weight: 700; color: var(--text-2); }
.editor-options { display: flex; align-items: center; gap: 9px; }
.editor-options label { font-weight: 600; }
.editor-options select {
  padding: 5px 9px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--bg); color: var(--text); font: inherit; font-size: 13px;
}
textarea {
  width: 100%; padding: 13px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--bg); color: var(--text);
  font-family: inherit; font-size: 15.5px; line-height: 1.65;
  resize: vertical; outline: none;
}
textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
#output { background: color-mix(in srgb, var(--ok) 7%, var(--bg)); }

button { font-family: inherit; font-size: 14px; cursor: pointer; }
.primary {
  padding: 11px 22px; border: 0; border-radius: 10px;
  background: linear-gradient(145deg, var(--accent-2), var(--accent));
  color: #fff; font-weight: 700;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
  transition: transform 120ms ease, box-shadow 120ms ease, opacity 120ms ease;
}
.primary:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 7px 20px rgba(79, 70, 229, 0.4); }
.primary:disabled { opacity: 0.5; cursor: progress; box-shadow: none; }
.secondary {
  padding: 9px 16px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--panel); color: var(--text-2); font-weight: 650;
}
.secondary:hover { background: color-mix(in srgb, var(--text-3) 8%, var(--panel)); }
.link {
  padding: 0; border: 0; background: none; color: var(--accent);
  font-weight: 650; text-decoration: underline;
}
.engine-state { color: var(--text-3); font-size: 13px; }
.engine-state.is-ready { color: var(--ok); }
.engine-state.is-warning { color: #b45309; }
.engine-state.is-error { color: #dc2626; }
.summary { color: var(--ok); font-size: 13px; font-weight: 650; }

/* ---------- Sections ---------- */
section { margin-top: 56px; }
section > h2 {
  margin: 0 0 20px; font-size: clamp(21px, 3.4vw, 27px);
  font-weight: 780; letter-spacing: -0.02em;
}
.grid {
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(258px, 1fr));
}
.grid article {
  padding: 18px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--panel);
}
.grid h3 { margin: 0 0 7px; font-size: 15.5px; }
.grid p { margin: 0 0 8px; color: var(--text-2); font-size: 14.5px; }
.example {
  margin: 10px 0 0 !important; padding: 9px 11px; border-radius: 9px;
  background: var(--accent-soft); font-size: 13.5px !important; color: var(--text-2);
}
.example s { color: var(--text-3); text-decoration-thickness: 1px; }
.example b { color: var(--accent); }
.privacy p { color: var(--text-2); max-width: 68ch; }
.hint { color: var(--text-3); font-size: 13px; }

/* ---------- Téléchargement ---------- */
.download-card {
  padding: 30px; border: 1px solid var(--border); border-radius: 18px;
  background:
    radial-gradient(ellipse 80% 120% at 50% 0%, var(--accent-soft), transparent 70%),
    var(--panel);
  text-align: center;
}
.download-card h2 { margin: 0 0 12px; }
.download-pitch { margin: 0 auto 22px; max-width: 56ch; color: var(--text-2); font-size: 16px; }
.download-button {
  display: inline-flex; align-items: center; gap: 14px;
  padding: 15px 28px; border-radius: 14px;
  background: linear-gradient(145deg, var(--accent-2), var(--accent));
  color: #fff; text-decoration: none; text-align: left;
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.34);
  transition: transform 130ms ease, box-shadow 130ms ease;
}
.download-button:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(79, 70, 229, 0.44); }
.download-button strong { display: block; font-size: 16.5px; }
.download-button small { display: block; opacity: 0.85; font-size: 13px; }
.download-icon { font-size: 26px; }
.download-steps {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 10px;
  margin: 24px 0 16px; padding: 0; list-style: none; counter-reset: step;
}
.download-steps li {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 15px; border: 1px solid var(--border); border-radius: 999px;
  background: var(--bg); color: var(--text-2); font-size: 13.5px;
}
.download-steps li::before {
  counter-increment: step; content: counter(step);
  display: grid; place-items: center; flex: 0 0 auto;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--accent); color: #fff; font-size: 12px; font-weight: 750;
}
kbd {
  padding: 2px 6px; border: 1px solid var(--border); border-bottom-width: 2px;
  border-radius: 5px; background: var(--bg); color: var(--text-2);
  font-family: inherit; font-size: 0.86em; font-weight: 650;
}
.download-button kbd, .download-pitch kbd { color: inherit; }

footer {
  padding: 26px 20px 40px; border-top: 1px solid var(--border);
  color: var(--text-3); font-size: 13.5px; text-align: center;
}
footer p { margin: 0; }

@media (max-width: 560px) {
  .hero { padding-top: 76px; }
  .site-language { top: 16px; right: 16px; }
  .editor-head { align-items: flex-start; }
  .editor-options { flex-wrap: wrap; justify-content: flex-end; }
  .editor-foot { flex-direction: column-reverse; align-items: stretch; }
  .editor-foot .primary, .editor-foot .secondary { width: 100%; }
  .engine-state { text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

/* Choix de langue proposé lorsque le texte est réellement bilingue : le
   moteur ne peut pas trancher seul sans risquer de « corriger » les mots de
   l'autre langue, donc on pose la question plutôt que de renvoyer au menu. */
/* « display » sur la classe l'emporterait sur le « [hidden] » du navigateur :
   sans cette règle, la barre resterait visible après le choix. */
.mixed-choice[hidden] { display: none; }
.mixed-choice {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
  margin-top: 14px; padding: 14px 16px;
  border: 1px solid var(--border); border-radius: 12px;
  background: var(--accent-soft); color: var(--text-2); font-size: 14px;
}
.mixed-choice .mixed-actions { display: flex; gap: 8px; margin-left: auto; }
@media (max-width: 640px) {
  .mixed-choice .mixed-actions { margin-left: 0; width: 100%; }
  .mixed-choice .mixed-actions button { flex: 1; }
}