/* RIANN — site corporate riann-pro.fr
   Identité créée pour RIANN SAS : sobre, corporate, VOLONTAIREMENT distincte des
   marques produit (OneDpe vert #319b42 / MonSimulateur indigo #1e1b4b) pour ne
   pas induire de confusion cross-brand. Bleu ardoise + acier.
   Site 100% statique, aucune dépendance externe (police système, pas de CDN). */

:root {
  --ink: #16202e;
  --ink-soft: #3a4759;
  --muted: #5f6f81;
  --line: #e3e8ef;
  --surface: #ffffff;
  --surface-alt: #f6f8fb;
  --accent: #2d5f8a;      /* bleu acier corporate */
  --accent-deep: #1f4667;
  --radius: 10px;
  --maxw: 1040px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--surface);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

a { color: var(--accent-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { color: var(--ink); line-height: 1.25; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 5vw, 2.9rem); margin: 0 0 .5em; }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin: 0 0 .6em; }
h3 { font-size: 1.12rem; margin: 0 0 .4em; }
p { margin: 0 0 1em; color: var(--ink-soft); }

/* ---- Header ---- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.9);
  backdrop-filter: saturate(180%) blur(8px);
  position: sticky; top: 0; z-index: 10;
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brandmark { display: flex; align-items: center; gap: 12px; }
.brandmark .logo {
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
  color: #fff; font-weight: 700; font-size: 15px; letter-spacing: .06em;
  display: grid; place-items: center;
}
.brandmark .name { font-weight: 700; font-size: 1.15rem; letter-spacing: .04em; color: var(--ink); }
.brandmark .name small { display:block; font-weight:500; font-size:.62rem; letter-spacing:.14em; color:var(--muted); text-transform:uppercase; }
.nav a { color: var(--ink-soft); font-size: .95rem; margin-left: 22px; }
.nav a:hover { color: var(--accent-deep); text-decoration: none; }

/* ---- Hero ---- */
.hero { padding: 72px 0 56px; border-bottom: 1px solid var(--line); background: var(--surface-alt); }
.hero .eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 600; color: var(--accent); margin-bottom: 14px; }
.hero p.lead { font-size: 1.18rem; color: var(--ink-soft); max-width: 46rem; }
.hero .cta { margin-top: 26px; display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-block; padding: 12px 22px; border-radius: var(--radius);
  font-weight: 600; font-size: .98rem; cursor: pointer; border: 1px solid transparent;
}
.btn-primary { background: var(--accent-deep); color: #fff; }
.btn-primary:hover { background: #163851; text-decoration: none; }
.btn-ghost { background: #fff; color: var(--accent-deep); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--accent); text-decoration: none; }

/* ---- Sections ---- */
section.block { padding: 60px 0; border-bottom: 1px solid var(--line); }
section.block:last-of-type { border-bottom: 0; }
.lede { max-width: 44rem; }

.grid { display: grid; gap: 24px; margin-top: 32px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 780px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }

.card {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; background: #fff;
}
.card h3 { color: var(--accent-deep); }
.card p { margin-bottom: 0; font-size: .98rem; }

.note {
  border-left: 3px solid var(--accent); background: var(--surface-alt);
  padding: 16px 20px; border-radius: 0 8px 8px 0; margin: 24px 0 0;
  font-size: .95rem; color: var(--ink-soft);
}

ul.clean { margin: 0; padding-left: 1.2em; }
ul.clean li { margin-bottom: .4em; color: var(--ink-soft); }

/* ---- Footer ---- */
.site-footer { background: var(--ink); color: #c7d2e0; padding: 48px 0 32px; }
.site-footer a { color: #dfe8f2; }
.site-footer .cols { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.site-footer .legal { font-size: .9rem; max-width: 30rem; }
.site-footer .legal strong { color: #fff; }
.site-footer .links a { display: block; margin-bottom: 8px; font-size: .92rem; }
.site-footer .fine { margin-top: 28px; padding-top: 20px; border-top: 1px solid #2a3547; font-size: .82rem; color: #8595a8; }

/* ---- Pages légales ---- */
.legal-page { padding: 56px 0 72px; }
.legal-page .wrap { max-width: 760px; }
.legal-page h1 { font-size: 2rem; margin-bottom: .2em; }
.legal-page .updated { color: var(--muted); font-size: .9rem; margin-bottom: 40px; }
.legal-page h2 { font-size: 1.25rem; margin-top: 40px; padding-top: 8px; }
.legal-page p, .legal-page li { font-size: 1rem; }
.legal-page .todo {
  background: #fff7ed; border: 1px dashed #e0a458; color: #7a4b12;
  padding: 3px 8px; border-radius: 5px; font-size: .9rem; font-style: italic;
}
.back { display:inline-block; margin-bottom: 28px; font-size:.92rem; }