/* LMU Overlay — site de présentation. Même direction artistique que l'appli : pit wall /
   logiciel d'ingénierie course. Fonds presque noirs, filets fins, rouge signal avec parcimonie,
   angles de 2 à 4 px, Bahnschrift (repli : Barlow) pour les libellés et les données. */

:root {
  --nav: #080a0d;
  --bg: #0b0e12;
  --bg-alt: #0e1216;
  --surface: #11161c;
  --surface2: #151b21;
  --border: #252c34;
  --border2: #303840;
  --text: #f1f3f5;
  --text-soft: #c4cbd2;
  --dim: #8c969f;
  --dim2: #66717b;
  --accent: #e12d26;
  --accent-dark: #b8221c;
  --green: #2fd16e;
  --warn: #f2b82b;
  --data: "Bahnschrift", "Barlow", "DIN Alternate", system-ui, sans-serif;
  --body: "Segoe UI", system-ui, -apple-system, Roboto, sans-serif;
  --mono: "JetBrains Mono", Consolas, ui-monospace, monospace;
  --wrap: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; font-family: var(--data); font-weight: 600; line-height: 1.1; }
code, kbd { font: 0.86em var(--mono); background: var(--surface2); border: 1px solid var(--border2); border-radius: 2px; padding: 1px 5px; }
kbd { border-bottom-width: 2px; }
dl, dd { margin: 0; }

.wrap { width: min(var(--wrap), 100% - 32px); margin-inline: auto; }
.narrow { max-width: 840px; }
.center { text-align: center; justify-content: center; }

/* ---------- boutons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font: 600 14px/1 var(--data); letter-spacing: .06em; text-transform: uppercase; white-space: nowrap;
  border-radius: 3px; border: 1px solid transparent;
  transition: background .12s, border-color .12s, color .12s;
}
.btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: square; }
.btn-sm { padding: 9px 14px; font-size: 12.5px; }
.btn-lg { padding: 14px 22px; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #ea3d36; }
.btn-primary:active { background: var(--accent-dark); }
.btn-ghost { background: var(--surface2); border-color: var(--border2); color: var(--text-soft); }
.btn-ghost:hover { border-color: var(--dim2); color: var(--text); background: #1a2027; }

/* ---------- barre du haut ---------- */
.nav { position: sticky; top: 0; z-index: 10; background: rgba(8, 10, 13, .94); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.nav-inner { display: flex; align-items: center; gap: 28px; height: 56px; }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.mark { width: 26px; height: 18px; }
.mark .red { fill: var(--accent); }
.mark .white { fill: var(--text); }
.brand-name { font: 600 18px var(--data); color: var(--text); letter-spacing: .04em; }
.brand-name b { color: var(--accent); font-weight: 600; }
.tag { font: 11px var(--mono); color: var(--dim); border: 1px solid var(--border2); padding: 1px 6px; }
.links { display: flex; margin-left: auto; height: 100%; }
.links a {
  display: flex; align-items: center; padding: 0 14px; height: 100%;
  font: 600 13px var(--data); letter-spacing: .07em; text-transform: uppercase; color: var(--dim);
  border-bottom: 2px solid transparent; transition: color .12s, border-color .12s;
}
.links a:hover { color: var(--text); border-bottom-color: var(--accent); }

/* ---------- accroche ---------- */
.hero {
  position: relative; padding: 64px 0 56px;
  background:
    linear-gradient(rgba(255, 255, 255, .025) 1px, transparent 1px) 0 0 / 40px 40px,
    linear-gradient(90deg, rgba(255, 255, 255, .025) 1px, transparent 1px) 0 0 / 40px 40px;
}
.hero-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; align-items: center; }
.kicker { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; font: 600 12.5px var(--data); letter-spacing: .12em; text-transform: uppercase; color: var(--dim); }
.led { width: 8px; height: 8px; background: var(--green); }
.hero h1 { font-size: clamp(32px, 4.2vw, 50px); letter-spacing: -.005em; margin-bottom: 18px; }
.hero h1 span { color: var(--text-soft); font-weight: 500; }
.lead { color: var(--text-soft); font-size: 17px; margin: 0 0 28px; max-width: 560px; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; }
.specs { display: flex; margin-top: 28px; border-top: 1px solid var(--border); }
.specs div { padding: 12px 20px 0 0; margin-right: 20px; border-right: 1px solid var(--border); }
.specs div:last-child { border-right: 0; }
.specs dt, .strip dt { font: 600 11px var(--data); letter-spacing: .1em; text-transform: uppercase; color: var(--dim2); }
.specs dd { font: 600 17px var(--data); color: var(--text); font-variant-numeric: tabular-nums; }
.meta { color: var(--dim); font-size: 13px; margin: 14px 0 0; }

.hero-visual { position: relative; }
.frame { position: relative; padding: 10px; }
.frame img { border: 1px solid var(--border2); box-shadow: 0 30px 60px -30px rgba(0, 0, 0, .9); }
.frame .c { position: absolute; width: 14px; height: 14px; border: 0 solid var(--dim); }
.frame .tl { top: 0; left: 0; border-top-width: 2px; border-left-width: 2px; }
.frame .tr { top: 0; right: 0; border-top-width: 2px; border-right-width: 2px; }
.frame .bl { bottom: 0; left: 0; border-bottom-width: 2px; border-left-width: 2px; }
.frame .br { bottom: 0; right: 0; border-bottom-width: 2px; border-right-width: 2px; }
.float { position: absolute; width: 56%; left: -9%; bottom: -12%; filter: drop-shadow(0 16px 28px rgba(0, 0, 0, .7)); }

/* ---------- bande de données ---------- */
.strip { background: var(--nav); border-block: 1px solid var(--border); }
.strip-inner { display: grid; grid-template-columns: repeat(8, 1fr); }
.strip-inner div { padding: 14px 16px; border-left: 1px solid var(--border); }
.strip-inner div:first-child { border-left: 0; padding-left: 0; }
.strip dd { font: 600 22px var(--data); font-variant-numeric: tabular-nums; }
.strip dd small { font-size: 13px; color: var(--dim); font-weight: 500; }
.strip dd.good { color: var(--green); }

/* ---------- sections ---------- */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); }
.head { max-width: 720px; margin-bottom: 40px; padding-left: 16px; border-left: 2px solid var(--accent); }
.head.center { margin-inline: auto; }
.code { margin: 0 0 8px; font: 12px var(--mono); color: var(--dim); letter-spacing: .04em; text-transform: uppercase; }
.head h2 { font-size: clamp(26px, 3.2vw, 36px); margin-bottom: 10px; }
.head p:not(.code) { color: var(--dim); margin: 0; font-size: 16px; }

/* ---------- fonctionnalités ---------- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--border); border-radius: 4px; overflow: hidden; }
.feature { padding: 26px; background: var(--surface); border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); transition: background .12s; }
.feature:nth-child(3n) { border-right: 0; }
.feature:nth-last-child(-n+3) { border-bottom: 0; }
.feature:hover { background: var(--surface2); }
.feature svg { width: 24px; height: 24px; fill: none; stroke: var(--text-soft); stroke-width: 1.5; }
.feature h3 { font-size: 18px; margin: 16px 0 8px; text-transform: uppercase; letter-spacing: .03em; }
.feature p { color: var(--dim); margin: 0; font-size: 14.5px; }

/* ---------- galerie des widgets ---------- */
.gallery { columns: 3 320px; column-gap: 16px; }
/* Fond « banc d'affichage » (grille fine sur fond piste) ; widgets à leur taille naturelle au plus */
.w {
  break-inside: avoid; margin: 0 0 16px; border: 1px solid var(--border); border-radius: 4px; overflow: hidden;
  background:
    linear-gradient(rgba(255, 255, 255, .03) 1px, transparent 1px) 0 0 / 20px 20px,
    linear-gradient(90deg, rgba(255, 255, 255, .03) 1px, transparent 1px) 0 0 / 20px 20px,
    linear-gradient(160deg, #2b3137, #1b1f23);
}
.w figcaption { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--border); background: var(--surface); }
.w figcaption b { font: 600 15px var(--data); }
.wcode { font: 11px var(--mono); color: var(--text-soft); border: 1px solid var(--border2); padding: 1px 6px; }
.wcat { margin-left: auto; font: 600 11px var(--data); letter-spacing: .1em; text-transform: uppercase; color: var(--dim2); }
.w img { margin: 20px auto; max-width: calc(100% - 40px); filter: drop-shadow(0 10px 18px rgba(0, 0, 0, .45)); }
.w p { margin: 0; padding: 10px 14px 14px; color: var(--dim); font-size: 13.5px; border-top: 1px solid var(--border); background: var(--surface); }

.sub { display: flex; align-items: baseline; gap: 14px; font-size: 22px; margin: 64px 0 20px; text-transform: uppercase; letter-spacing: .03em; }
.sub span { font: 13px var(--mono); color: var(--dim); text-transform: none; }
.catalog { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; align-items: start; }
.cat { background: var(--surface); border: 1px solid var(--border); border-radius: 4px; }
.cat h4 { display: flex; justify-content: space-between; padding: 10px 14px; font-size: 13px; letter-spacing: .1em; text-transform: uppercase; background: #0d1116; border-bottom: 1px solid var(--border); }
.cat h4 span { color: var(--green); font-variant-numeric: tabular-nums; }
.cat ul { list-style: none; padding: 4px 0; margin: 0; }
.cat li { display: flex; align-items: center; gap: 12px; padding: 6px 14px; font: 500 14.5px var(--data); color: var(--text-soft); border-bottom: 1px solid rgba(37, 44, 52, .55); }
.cat li:last-child { border-bottom: 0; }
.cat li code { background: none; border: 0; padding: 0; color: var(--dim2); font-size: 11px; width: 34px; }

/* ---------- captures de l'appli ---------- */
.tabs { display: flex; gap: 0; margin-bottom: 20px; border-bottom: 1px solid var(--border); overflow-x: auto; }
.tabs button {
  font: 600 13px var(--data); letter-spacing: .08em; text-transform: uppercase;
  color: var(--dim); background: none; border: 0; border-bottom: 2px solid transparent; margin-bottom: -1px;
  padding: 12px 18px; cursor: pointer; white-space: nowrap; transition: color .12s, border-color .12s;
}
.tabs button:hover { color: var(--text); }
.tabs button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }
.window { margin: 0; }
.window img { transition: opacity .15s; }
.window figcaption { margin-top: 12px; color: var(--dim); font-size: 14px; }

/* ---------- installation ---------- */
.steps { list-style: none; padding: 0; margin: 0 0 40px; display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--border); border-radius: 4px; overflow: hidden; }
.steps li { padding: 26px; background: var(--surface); border-right: 1px solid var(--border); }
.steps li:last-child { border-right: 0; }
.num { font: 500 13px var(--mono); color: var(--accent); }
.steps h3 { font-size: 20px; margin: 10px 0 8px; text-transform: uppercase; letter-spacing: .03em; }
.steps p { margin: 0; color: var(--dim); font-size: 14.5px; }
.steps em { color: var(--text-soft); font-style: normal; font-weight: 600; }

/* ---------- FAQ ---------- */
details { border: 1px solid var(--border); border-radius: 3px; background: var(--surface); margin-bottom: 8px; }
details[open] { border-color: var(--border2); }
summary { cursor: pointer; list-style: none; padding: 15px 18px; font: 600 16px var(--data); display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--dim); font: 18px var(--mono); line-height: 1; }
details[open] summary::after { content: "−"; color: var(--accent); }
details p { margin: 0; padding: 0 18px 16px; color: var(--dim); }

/* ---------- pied de page ---------- */
.footer { border-top: 1px solid var(--border); padding: 28px 0; background: var(--nav); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.footer p { color: var(--dim2); font-size: 12.5px; margin: 0; max-width: 560px; text-align: right; }

/* ---------- petits écrans ---------- */
@media (max-width: 1080px) {
  .strip-inner { grid-template-columns: repeat(4, 1fr); }
  .strip-inner div:nth-child(5) { border-left: 0; padding-left: 0; }
  .strip-inner div:nth-child(-n+4) { border-bottom: 1px solid var(--border); }
  .catalog { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 56px; }
  .hero-visual { max-width: 680px; }
  .features { grid-template-columns: 1fr 1fr; }
  .feature:nth-child(3n) { border-right: 1px solid var(--border); }
  .feature:nth-child(2n) { border-right: 0; }
  .feature:nth-last-child(-n+3) { border-bottom: 1px solid var(--border); }
  .feature:nth-last-child(-n+2) { border-bottom: 0; }
  .links { display: none; }
  .nav .btn { margin-left: auto; }
}
@media (max-width: 640px) {
  .hero { padding-top: 40px; }
  .features, .steps, .catalog { grid-template-columns: 1fr; }
  .feature, .steps li { border-right: 0 !important; border-bottom: 1px solid var(--border) !important; }
  .specs { flex-wrap: wrap; }
  .strip-inner { grid-template-columns: repeat(2, 1fr); }
  .strip-inner div:nth-child(odd) { border-left: 0; padding-left: 0; }
  .section { padding: 64px 0; }
  .float { left: 0; width: 70%; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer p { text-align: center; }
  .tag { display: none; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* ---------- compte ---------- */
.links a.current { color: var(--text); border-bottom-color: var(--accent); }
.account { min-height: calc(100vh - 56px - 90px); }
.account-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
.account-side h1 { font-size: clamp(28px, 3.4vw, 40px); margin: 6px 0 14px; }
.account-side > p:not(.code) { color: var(--text-soft); font-size: 16px; margin: 0 0 24px; }
.account-points { border-top: 1px solid var(--border); }
.account-points div { display: flex; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--border); }
.account-points dt { font: 500 13px var(--mono); color: var(--accent); padding-top: 2px; }
.account-points dd { color: var(--dim); }
.account-points b, .panel b { color: var(--text-soft); }

.panel { background: var(--surface); border: 1px solid var(--border); border-radius: 4px; padding: 0 28px 28px; }
.panel .tabs { margin: 0 -28px 24px; padding: 0 16px; }
.field { display: block; margin-bottom: 14px; }
.field span { display: block; margin-bottom: 6px; font: 600 11.5px var(--data); letter-spacing: .1em; text-transform: uppercase; color: var(--dim); }
.field input {
  width: 100%; padding: 11px 12px; font: 15px var(--body); color: var(--text);
  background: var(--surface2); border: 1px solid var(--border2); border-radius: 2px; outline: none;
  transition: border-color .12s, box-shadow .12s;
}
.field input::placeholder { color: var(--dim2); }
.field input:focus { border-color: var(--dim); box-shadow: inset 2px 0 0 var(--accent); }
.check { display: inline-flex; align-items: center; gap: 10px; margin: 4px 0 16px; cursor: pointer; color: var(--text-soft); font: 600 13px var(--data); letter-spacing: .06em; text-transform: uppercase; }
.check input { width: 16px; height: 16px; accent-color: var(--green); }
.form-error { min-height: 20px; margin: 0 0 12px; color: #ff4d4f; font-size: 14px; }
.submit { width: 100%; justify-content: center; }
.submit:disabled { opacity: .6; cursor: default; }
[hidden] { display: none !important; }

.profile-head { display: flex; align-items: center; gap: 20px; padding: 28px 0 20px; border-bottom: 1px solid var(--border); }
.profile-head .btn { margin-left: auto; }
.profile-head h2 { font-size: 28px; }
.profile-head .code { margin: 0 0 2px; }
.initials {
  width: 64px; height: 64px; flex: none; display: grid; place-items: center;
  font: 600 24px var(--data); background: var(--surface2); border: 1px solid var(--border2);
  box-shadow: inset 0 -3px 0 var(--accent);
}
.mono { font: 13px var(--mono); color: var(--dim); margin: 2px 0 0; }
.cells { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--border); }
.cells div { padding: 14px 14px 14px 0; }
.cells div + div { padding-left: 14px; border-left: 1px solid var(--border); }
.cells dt { font: 600 11px var(--data); letter-spacing: .1em; text-transform: uppercase; color: var(--dim2); }
.cells dd { font: 600 17px var(--data); font-variant-numeric: tabular-nums; margin-top: 2px; word-break: break-word; }
.hint { color: var(--dim); font-size: 14px; margin: 16px 0 0; }
.loading { color: var(--dim); font: 13px var(--mono); }

@media (max-width: 900px) {
  .account-grid { grid-template-columns: 1fr; gap: 36px; }
  .cells { grid-template-columns: 1fr 1fr; }
  .cells div:nth-child(3) { padding-left: 0; border-left: 0; }
  .profile-head { flex-wrap: wrap; }
}