/* Offrizo — site styles. Mirrors the app's design direction (ADR-018 « Grille »):
   Swiss grid, IBM Plex Sans (bundled, OFL), ink on white, radius 2/4, hairlines,
   one accent. No framework, no script required. */

@font-face {
  font-family: "IBM Plex Sans";
  src: url("fonts/IBMPlexSans-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("fonts/IBMPlexSans-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Sans";
  src: url("fonts/IBMPlexSans-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Tokens — app/lib/core/ui/foundations/direction.dart (Grille) */
  --ink: #111111;
  --ink-muted: #545454;
  --line: #e2e2e2;
  --line-strong: #767676;
  --surface: #ffffff;
  --sunken: #f3f3f1;
  --accent: #c94f1e;        /* « orange chantier », the default brand of the app */
  --accent-ink: #ffffff;
  --focus: #1d4e89;

  --font: "IBM Plex Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --radius: 4px;
  --radius-sm: 2px;
  --gutter: 16px;
  --measure: 62ch;
  --max: 1120px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-24: 96px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 1.0625rem; /* 17px */
  line-height: 1.5;
  color: var(--ink);
  background: var(--surface);
  font-feature-settings: "tnum" 1;
}

img { max-width: 100%; height: auto; display: block; }

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

h1, h2, h3, h4 { margin: 0; line-height: 1.15; letter-spacing: -0.01em; font-weight: 600; }
h1 { font-size: clamp(2.375rem, 6.4vw, 4.5rem); letter-spacing: -0.03em; line-height: 1.02; }
h2 { font-size: clamp(1.75rem, 3.6vw, 2.625rem); letter-spacing: -0.02em; line-height: 1.08; max-width: 22ch; }
h3 { font-size: 1.1875rem; }
p { margin: 0; }
p + p { margin-top: var(--space-4); }

.muted { color: var(--ink-muted); }
.small { font-size: 0.9375rem; }
.kicker {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  display: flex; align-items: baseline; gap: var(--space-3);
}
.kicker .n { color: var(--accent); font-variant-numeric: tabular-nums; letter-spacing: 0; }
.measure { max-width: var(--measure); }

.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: #fff; padding: var(--space-3) var(--space-4);
}
.skip:focus { left: var(--gutter); z-index: 10; }

/* Layout */
.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
.section { padding: var(--space-16) 0; border-top: 1px solid var(--line); }
@media (min-width: 880px) { .section { padding: var(--space-24) 0; } }
.section > .wrap > .kicker + h2 { margin-top: var(--space-3); }
.section-lead { margin-top: var(--space-4); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 5;
  background: var(--surface); /* solid: a backdrop-filter would trap the fixed menu panel */
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 56px; gap: var(--space-4);
}
.wordmark {
  font-weight: 700; font-size: 1.25rem; letter-spacing: -0.02em;
  text-decoration: none; display: inline-flex; align-items: center; gap: var(--space-2);
}
.wordmark .mark { width: 22px; height: 22px; flex: none; color: var(--ink); }
/* Navigation: inline from 880 px; below, a full-screen panel opened by a link
   to #menu and closed by any navigation (CSS :target, no script). */
.nav { display: none; }
.nav a { text-decoration: none; }
.nav-open {
  display: inline-flex; align-items: center; gap: var(--space-3); min-height: 44px; padding: 0 var(--space-2);
  text-decoration: none; font-weight: 600; font-size: 0.9375rem;
}
.nav-open span { width: 18px; height: 2px; background: var(--ink); box-shadow: 0 -5px 0 var(--ink), 0 5px 0 var(--ink); }
.nav:target {
  display: flex; flex-direction: column; position: fixed; inset: 57px 0 0 0; z-index: 6;
  background: var(--surface); padding: var(--space-4) var(--gutter) var(--space-8);
  overflow: auto;
}
.nav:target a { font-size: 1.5rem; font-weight: 600; padding: var(--space-4) 0; border-bottom: 1px solid var(--line); letter-spacing: -0.01em; }
.nav:target .nav-close { font-size: 0.9375rem; font-weight: 600; align-self: flex-end; border: 0; padding: var(--space-2) 0 var(--space-4); color: var(--ink-muted); }
.nav:target + .nav-open { visibility: hidden; }
.nav:target .nav-cta { margin-top: var(--space-6); border-bottom: 0; font-size: 1.0625rem; align-self: flex-start; padding: 0 var(--space-6); }
@media (min-width: 880px) {
  .nav { display: flex; align-items: center; gap: var(--space-6); font-size: 0.9375rem; }
  .nav a:hover { text-decoration: underline; }
  .nav-open, .nav-close { display: none; }
  .nav .nav-cta { min-height: 40px; padding: 0 var(--space-4); font-size: 0.9375rem; margin-left: var(--space-2); }
  .nav .nav-cta:hover { text-decoration: none; }
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: 48px; padding: 0 var(--space-6);
  border-radius: var(--radius); border: 1px solid var(--ink);
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer;
  background: var(--ink); color: #fff;
}
.btn:hover { background: #000; }
.btn-secondary { background: transparent; color: var(--ink); }
.btn-secondary:hover { background: var(--sunken); }
.btn-row { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-8); }

/* Hero */
.hero { padding: var(--space-12) 0 0; overflow: hidden; }
.hero-grid { display: grid; gap: var(--space-10); align-items: end; }
.hero-grid > div:first-child { padding-bottom: var(--space-12); }
@media (min-width: 880px) {
  .hero { padding-top: var(--space-16); }
  .hero-grid { grid-template-columns: 7fr 5fr; gap: var(--space-16); }
  .hero-grid > div:first-child { padding-bottom: var(--space-24); }
}
.hero h1 { max-width: 13ch; }
.hero .lead { font-size: clamp(1.125rem, 1.6vw, 1.3125rem); margin-top: var(--space-6); max-width: 44ch; }
/* The phone sits on the section rule and is cropped on short screens, so the
   fold keeps the headline, the actions and the top of the quote. */
.hero-phone { width: min(100%, 360px); margin: 0 auto -1px; border-bottom: 0; border-radius: 12px 12px 0 0; max-height: 440px; }
@media (min-width: 880px) { .hero-phone { max-height: 600px; width: min(100%, 440px); margin-right: 0; } }
.hero .proof {
  margin-top: var(--space-8); display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-6);
  font-size: 0.9375rem; color: var(--ink-muted);
}
.hero .proof li { list-style: none; }
.hero .proof ul { margin: 0; padding: 0; display: contents; }
.hero .proof .ok::before { content: "✓ "; color: var(--ink); }

/* Phone frame: a plain ink rectangle, no fake device chrome */
.phone {
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 1px 0 var(--line);
  width: min(100%, 300px);
  margin: 0 auto;
}
.phone img { width: 100%; }
.phone.wide { width: min(100%, 340px); }
.phone.video { width: min(100%, 320px); background: var(--ink); }
.phone.video video { display: block; width: 100%; height: auto; aspect-ratio: 9 / 16; background: var(--ink); }
.demo-grid { display: grid; gap: var(--space-10); align-items: center; }
@media (min-width: 880px) { .demo-grid { grid-template-columns: 6fr 5fr; gap: var(--space-16); } }
.small { font-size: 0.875rem; }

/* Steps */
.steps { display: grid; gap: var(--space-12); margin-top: var(--space-12); }
@media (min-width: 880px) { .steps { grid-template-columns: repeat(3, 1fr); gap: var(--space-8); } }
.step .num {
  font-weight: 700; font-size: 2.5rem; line-height: 1; letter-spacing: -0.03em;
  border-top: 2px solid var(--ink); padding-top: var(--space-3);
}
.step h3 { margin-top: var(--space-3); }
.step p { margin-top: var(--space-2); }
.step .phone { margin: var(--space-6) 0 0; width: min(100%, 300px); aspect-ratio: 393 / 852; }
.step .phone img { width: 100%; height: 100%; object-fit: contain; object-position: bottom; }

/* Documents */
.docs { display: grid; gap: var(--space-8); margin-top: var(--space-12); }
@media (min-width: 600px) { .docs { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .docs { grid-template-columns: repeat(3, 1fr); } }
.paper {
  background: #fff; border: 1px solid var(--line);
  box-shadow: 0 8px 24px rgba(17, 17, 17, 0.08), 0 1px 0 var(--line);
  border-radius: var(--radius-sm); overflow: hidden;
}
.doc { margin: 0; }
.doc figcaption { margin-top: var(--space-3); font-weight: 600; }
.doc figcaption span { display: block; font-weight: 400; color: var(--ink-muted); font-size: 0.9375rem; }

.split { display: grid; gap: var(--space-12); align-items: start; margin-top: var(--space-12); }
@media (min-width: 880px) { .split { grid-template-columns: 1fr 1fr; gap: var(--space-16); } }
.split .paper { max-width: 420px; margin: 0 auto; }

/* Feature list */
.list { margin: var(--space-6) 0 0; padding: 0; list-style: none; }
.list li { padding: var(--space-3) 0; border-top: 1px solid var(--line); display: grid; gap: var(--space-1); }
.list li:last-child { border-bottom: 1px solid var(--line); }
.list strong { font-weight: 600; }

/* Trades */
.trades { display: grid; gap: 0 var(--space-8); margin-top: var(--space-12); list-style: none; padding: 0; margin-bottom: 0; }
@media (min-width: 960px) { .trades { grid-template-columns: repeat(5, 1fr); } }
.trade { border-top: 2px solid var(--ink); padding: var(--space-3) 0 var(--space-6); display: grid; gap: var(--space-1); }
.trade .unit { font-size: 0.9375rem; color: var(--ink-muted); }
.trade strong { font-size: 1.125rem; }

/* Pricing */
.price-card {
  margin-top: var(--space-12); border: 1px solid var(--ink); border-radius: var(--radius);
  display: grid; gap: 0; overflow: hidden; max-width: 820px;
}
@media (min-width: 720px) { .price-card { grid-template-columns: 1fr 1fr; } }
.plan { padding: var(--space-8); }
.plan + .plan { border-top: 1px solid var(--line); }
@media (min-width: 720px) { .plan + .plan { border-top: 0; border-left: 1px solid var(--line); } }
.plan.featured { background: var(--sunken); }
.plan .amount { font-size: 2.5rem; font-weight: 700; letter-spacing: -0.03em; line-height: 1; margin-top: var(--space-3); }
.plan .amount small { font-size: 1rem; font-weight: 400; letter-spacing: 0; color: var(--ink-muted); }
.plan .badge {
  display: inline-block; margin-top: var(--space-3); padding: 2px var(--space-2);
  border: 1px solid var(--ink); border-radius: var(--radius-sm); font-size: 0.8125rem; font-weight: 600;
}
.price-notes { margin-top: var(--space-6); }

/* Owner section */
.owner-grid { display: grid; gap: var(--space-8); margin-top: var(--space-12); grid-template-columns: repeat(2, 1fr); align-items: end; }
@media (min-width: 880px) { .owner-grid { grid-template-columns: repeat(4, 1fr); } }
.owner-grid .phone { width: 100%; max-width: 280px; margin: 0 auto; }
.owner-grid .doc { max-width: 300px; margin: 0 auto; width: 100%; }
.owner-grid .doc figcaption { font-size: 0.9375rem; }

/* Result figures */
.kpis { display: grid; gap: var(--space-6); grid-template-columns: repeat(2, 1fr); align-content: start; }
.kpis div { border-top: 2px solid var(--ink); padding-top: var(--space-3); display: grid; gap: var(--space-1); }
.kpi { font-size: 2.25rem; font-weight: 700; letter-spacing: -0.03em; line-height: 1; font-variant-numeric: tabular-nums; }
.kpis .muted { font-size: 0.9375rem; }
.kpis-row { margin-top: var(--space-12); }
@media (min-width: 880px) { .kpis-row { grid-template-columns: repeat(4, 1fr); } }
.hero .stage { margin-top: var(--space-3); }

/* Motion — purposeful only: the phone settles on the hero rule once, and
   documents lift under the pointer. No scroll-driven reveals: they blank the
   page for anything that captures it whole (previews, audits, print). All
   off under prefers-reduced-motion. */
@media (prefers-reduced-motion: no-preference) {
  @keyframes rise-phone { from { transform: translateY(24px); } to { transform: none; } }
  .hero-phone { animation: rise-phone 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) both; }
  .doc .paper, .split .paper { transition: transform 0.25s ease, box-shadow 0.25s ease; }
  .doc:hover .paper, .split .paper:hover { transform: translateY(-4px); box-shadow: 0 16px 36px rgba(17, 17, 17, 0.12), 0 1px 0 var(--line); }
}

/* Trust */
.trust { display: grid; gap: var(--space-6); margin-top: var(--space-12); }
@media (min-width: 720px) { .trust { grid-template-columns: repeat(3, 1fr); } }
.trust div { border-top: 2px solid var(--ink); padding-top: var(--space-3); }
.trust h3 { font-size: 1.0625rem; }
.trust p { margin-top: var(--space-2); color: var(--ink-muted); font-size: 0.9375rem; }

/* FAQ */
.faq-grid { display: grid; gap: var(--space-8); margin-top: var(--space-8); align-items: start; }
@media (min-width: 880px) { .faq-grid { grid-template-columns: minmax(0, 760px) 1fr; gap: var(--space-16); } }
.faq { margin-top: 0; max-width: 760px; }
.faq-aside { border-top: 2px solid var(--ink); padding-top: var(--space-3); }
.faq-aside h3 { font-size: 1.0625rem; }
.faq-aside p { margin-top: var(--space-2); color: var(--ink-muted); font-size: 0.9375rem; }
@media (min-width: 880px) { .faq-aside { margin-top: var(--space-6); } }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary {
  cursor: pointer; padding: var(--space-4) 0; font-weight: 600; list-style: none;
  display: flex; justify-content: space-between; gap: var(--space-4); min-height: 48px; align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-weight: 400; font-size: 1.5rem; line-height: 1; color: var(--ink-muted); }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding-bottom: var(--space-4); max-width: var(--measure); }

/* CTA band */
.cta { background: var(--ink); color: #fff; padding: var(--space-16) 0; }
.cta h2 { color: #fff; }
.cta p { color: #d8d8d8; margin-top: var(--space-4); }
.cta .btn { background: #fff; color: var(--ink); border-color: #fff; }
.cta .btn:hover { background: var(--sunken); }
.cta a { color: #fff; }
.cta .kicker { color: #b8b8b8; }
.cta .kicker .n { color: #f0a070; }
.cta-grid { display: grid; gap: var(--space-12); align-items: start; }
@media (min-width: 880px) { .cta-grid { grid-template-columns: 6fr 6fr; gap: var(--space-16); } }

/* Sign-up form (on the ink band). Native controls, no script: the browser
   validates required fields and the e-mail format before anything is sent. */
.signup { display: grid; gap: var(--space-4); background: #fff; color: var(--ink); padding: var(--space-6); border-radius: var(--radius); }
@media (min-width: 600px) { .signup { padding: var(--space-8); } }
.signup .field { display: grid; gap: var(--space-2); margin: 0; padding: 0; border: 0; min-width: 0; }
.signup label, .signup legend { font-weight: 600; font-size: 0.9375rem; }
.signup label .muted { font-weight: 400; }
.signup input, .signup select {
  font: inherit; color: var(--ink); background: #fff; width: 100%;
  min-height: 48px; padding: 0 var(--space-3); border: 1px solid var(--line-strong); border-radius: var(--radius);
}
.signup select { appearance: none; -webkit-appearance: none; padding-right: var(--space-8);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath d='M3 6l5 5 5-5' fill='none' stroke='%23111' stroke-width='2'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center; }
.signup input:focus, .signup select:focus { outline: 3px solid var(--focus); outline-offset: 1px; border-color: var(--ink); }
.signup input::placeholder { color: #8a8a8a; }
.signup .field-row { display: grid; gap: var(--space-4); }
@media (min-width: 600px) { .signup .field-row { grid-template-columns: 1fr 1fr; } }
.signup .choices { display: flex; gap: var(--space-6); }
.signup .choices label { display: inline-flex; align-items: center; gap: var(--space-2); min-height: 44px; font-weight: 400; }
.signup .choices input { width: 20px; height: 20px; min-height: 0; margin: 0; accent-color: var(--ink); }
.signup .btn, .cta .signup .btn { width: 100%; margin-top: var(--space-2); background: var(--ink); color: #fff; border-color: var(--ink); }
.cta .signup .btn:hover { background: #000; }
.signup .small { color: var(--ink-muted); }
.signup .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.cta .signup a { color: var(--ink); }

/* Status pages (merci, confirme, stop, erreur) */
.status { border-top: 0; min-height: 60vh; }
.status h1 { margin-top: var(--space-3); max-width: 16ch; }
.status .lead { font-size: 1.25rem; margin-top: var(--space-6); }
.status .list { margin-top: var(--space-8); }
.status .btn-row { margin-top: var(--space-8); }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: var(--space-12) 0; font-size: 0.9375rem; color: var(--ink-muted); }
.site-footer .cols { display: grid; gap: var(--space-8); }
@media (min-width: 720px) { .site-footer .cols { grid-template-columns: 2fr 1fr 1fr; } }
.site-footer ul { list-style: none; margin: var(--space-3) 0 0; padding: 0; display: grid; gap: var(--space-2); }
.site-footer ul a { color: var(--ink); text-decoration: none; }
.site-footer ul a:hover { text-decoration: underline; }
.site-footer p a { color: var(--ink); text-decoration: underline; }
.site-footer .legal { margin-top: var(--space-8); padding-top: var(--space-6); border-top: 1px solid var(--line); }

/* Legal / text pages */
.page { padding: var(--space-12) 0 var(--space-24); }
.page h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
.page .updated { margin-top: var(--space-3); }
.prose { max-width: var(--measure); margin-top: var(--space-8); }
.prose h2 { font-size: 1.375rem; margin-top: var(--space-12); }
.prose h3 { font-size: 1.125rem; margin-top: var(--space-8); }
.prose p { margin-top: var(--space-4); }
.prose ul, .prose ol { margin: var(--space-4) 0 0; padding-left: 1.25em; }
.prose li + li { margin-top: var(--space-2); }
.prose table { width: 100%; border-collapse: collapse; margin-top: var(--space-6); font-size: 0.9375rem; }
.prose th, .prose td { text-align: left; vertical-align: top; padding: var(--space-3) var(--space-2); border-top: 1px solid var(--line); }
.prose th { font-weight: 600; }
.prose tr:last-child td { border-bottom: 1px solid var(--line); }
.notice {
  margin-top: var(--space-8); padding: var(--space-4); border: 1px solid var(--line);
  border-left: 3px solid var(--accent); background: var(--sunken); border-radius: var(--radius-sm);
}
.prose .steps-list li { padding: var(--space-2) 0; }
.toc { margin-top: var(--space-6); padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-4); font-size: 0.9375rem; }
.toc a { color: var(--ink-muted); }

@media print {
  .site-header, .site-footer, .cta, .skip { display: none; }
  body { font-size: 11pt; }
}