/* ============================================================
   CoproGestia — landing page
   Esthétique : minimalisme suisse, éditorial premium.
   Fond crème / accents vert sapin profond, grande typo serif.
   ============================================================ */

:root {
  /* Palette "Swiss premium" — crème + vert sapin (différencié du teal SaaS) */
  --cream:        #f4f0e8;   /* fond clair principal */
  --cream-soft:   #ece7db;   /* sections douces */
  --paper:        #fbf9f4;   /* cartes claires */
  --forest:       #1c2a24;   /* vert sapin très sombre (fond foncé / texte) */
  --forest-2:     #243530;   /* surface foncée légèrement plus claire */
  --ink:          #1a201d;   /* texte principal sur clair */
  --ink-soft:     #4a544e;   /* texte secondaire sur clair */
  --accent:       #5c7a5e;   /* vert sauge (accent discret) */
  --accent-warm:  #b08d57;   /* laiton / or suisse (touches premium) */
  --line:         #d8d1c2;   /* filets sur clair */
  --line-dark:    #3a463f;   /* filets sur foncé */
  --on-dark:      #f4f0e8;   /* texte sur fond foncé */
  --on-dark-soft: #b9c1ba;   /* texte secondaire sur foncé */

  --maxw: 1180px;
  --maxw-narrow: 760px;
  --radius: 14px;
  --pad-x: clamp(1.25rem, 5vw, 3rem);

  --serif: "Fraunces", "Iowan Old Style", "Times New Roman", Georgia, serif;
  --sans:  "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 { font-family: var(--serif); font-weight: 500; line-height: 1.12; letter-spacing: -0.01em; margin: 0; }
p { margin: 0 0 1rem; }
a { color: inherit; text-decoration: none; }
em { font-style: italic; }
strong { font-weight: 600; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-inline: var(--pad-x); }
.wrap-narrow { max-width: var(--maxw-narrow); }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 1000;
  background: var(--forest); color: var(--on-dark);
  padding: 0.6rem 1rem; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 2.5px solid var(--accent-warm); outline-offset: 3px; border-radius: 3px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--cream) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; cursor: pointer; }
.brand-mark {
  display: inline-grid; place-items: center;
  width: 36px; height: 36px; border-radius: 9px;
  background: var(--forest); color: var(--on-dark);
}
.brand-name { font-family: var(--serif); font-size: 1.22rem; font-weight: 600; letter-spacing: -0.01em; }
.brand-tld { color: var(--accent-warm); }

.site-nav { display: flex; align-items: center; gap: clamp(1rem, 2.5vw, 2rem); }
.site-nav a { font-size: 0.95rem; font-weight: 500; color: var(--ink-soft); transition: color 0.2s var(--ease); }
.site-nav a:hover { color: var(--ink); }
.nav-cta {
  background: var(--forest); color: var(--on-dark) !important;
  padding: 0.5rem 1rem; border-radius: 999px;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}
.nav-cta:hover { background: var(--forest-2); transform: translateY(-1px); }
@media (max-width: 760px) {
  .site-nav a:not(.nav-cta) { display: none; }
}
@media (max-width: 420px) {
  .header-inner .brand-tld { display: none; }
  .nav-cta { padding: 0.5rem 0.85rem; font-size: 0.9rem; }
  .brand-name { font-size: 1.1rem; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--sans); font-size: 1rem; font-weight: 600;
  padding: 0.85rem 1.5rem; border-radius: 999px; border: 1px solid transparent;
  cursor: pointer; min-height: 48px;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.btn-primary { background: var(--forest); color: var(--on-dark); }
.btn-primary:hover { background: var(--forest-2); transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink); transform: translateY(-2px); }
.btn-block { width: 100%; }
.section-dark .btn-primary, .cta-final .btn-primary { background: var(--accent-warm); color: var(--forest); }
.section-dark .btn-primary:hover, .cta-final .btn-primary:hover { background: #c39a63; }

/* ---------- Eyebrow / section heads ---------- */
.eyebrow {
  font-family: var(--sans); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent);
  margin: 0 0 1rem;
}
.eyebrow-light { color: var(--accent-warm); }

.section { padding: clamp(4rem, 9vw, 7.5rem) 0; }
.section-head { max-width: 760px; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section-head h2 { font-size: clamp(1.9rem, 4.5vw, 3rem); }
.section-intro { font-size: clamp(1.05rem, 1.6vw, 1.2rem); color: var(--ink-soft); margin-top: 1.25rem; max-width: 62ch; }
.section-dark .section-intro { color: var(--on-dark-soft); }

/* ---------- Hero ---------- */
.hero {
  padding: clamp(3.5rem, 9vw, 8rem) 0 clamp(3.5rem, 7vw, 6rem);
  background:
    radial-gradient(120% 90% at 85% -10%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 60%),
    var(--cream);
  border-bottom: 1px solid var(--line);
}
.hero .eyebrow { animation: rise 0.7s var(--ease) both; }
.hero-title {
  font-size: clamp(2.4rem, 6.2vw, 4.6rem);
  max-width: 16ch;
  margin-bottom: 1.5rem;
  animation: rise 0.7s var(--ease) 0.05s both;
}
.hero-title-sub { display: block; color: var(--accent); }
.hero-lede {
  font-size: clamp(1.1rem, 1.8vw, 1.3rem);
  color: var(--ink-soft); max-width: 60ch; margin-bottom: 2rem;
  animation: rise 0.7s var(--ease) 0.12s both;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 0.9rem; animation: rise 0.7s var(--ease) 0.18s both; }
.hero-demo-note { margin-top: 0.8rem; font-size: 0.88rem; opacity: 0.75; animation: rise 0.7s var(--ease) 0.24s both; }

.hero-proof {
  list-style: none; padding: 0; margin: clamp(2.5rem, 5vw, 4rem) 0 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem;
  border-top: 1px solid var(--line); padding-top: 2rem;
  animation: rise 0.7s var(--ease) 0.24s both;
}
.hero-proof li { display: flex; flex-direction: column; }
.hero-proof strong { font-family: var(--serif); font-size: 1.2rem; font-weight: 600; }
.hero-proof span { font-size: 0.92rem; color: var(--ink-soft); }
@media (max-width: 680px) {
  .hero-proof { grid-template-columns: 1fr; gap: 1.1rem; }
}

@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* ---------- Preuve ---------- */
.proof-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.5rem, 3vw, 2.5rem); }
.proof-card {
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); padding: clamp(1.6rem, 2.5vw, 2.2rem);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.proof-card:hover { transform: translateY(-4px); box-shadow: 0 18px 40px -24px rgba(28,42,36,0.4); }
.proof-num { font-family: var(--serif); font-size: 1rem; color: var(--accent-warm); font-weight: 600; }
.proof-card h3 { font-size: 1.5rem; margin: 0.5rem 0 0.8rem; }
.proof-card p { color: var(--ink-soft); margin: 0; font-size: 0.98rem; }
@media (max-width: 900px) { .proof-grid { grid-template-columns: 1fr; } }

/* ---------- Section foncée (IA) ---------- */
.section-dark { background: var(--forest); color: var(--on-dark); }
.section-dark h2 { color: var(--on-dark); }

.feature-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem) clamp(1.5rem, 3.5vw, 3rem);
}
.feature { padding-top: 1.5rem; border-top: 1px solid var(--line-dark); }
.feature-ico {
  display: inline-grid; place-items: center; width: 44px; height: 44px;
  border-radius: 11px; background: var(--forest-2); color: var(--accent-warm);
  margin-bottom: 1.1rem;
}
.feature-ico svg { width: 22px; height: 22px; }
.feature h3 { font-size: 1.35rem; color: var(--on-dark); margin-bottom: 0.6rem; }
.feature p { color: var(--on-dark-soft); margin: 0; font-size: 0.97rem; }
@media (max-width: 900px) { .feature-grid { grid-template-columns: 1fr; } }

/* ---------- Comparaison ---------- */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.25rem, 3vw, 2rem); }
.compare-col { border-radius: var(--radius); padding: clamp(1.6rem, 2.8vw, 2.4rem); }
.compare-col h3 { font-size: 1.45rem; margin-bottom: 1.2rem; }
.compare-col ul { list-style: none; margin: 0; padding: 0; }
.compare-col li { position: relative; padding-left: 1.8rem; margin-bottom: 0.85rem; font-size: 0.98rem; }
.compare-col li::before {
  position: absolute; left: 0; top: 0.05em; font-weight: 700; font-size: 1rem;
}
.compare-them { background: var(--cream-soft); border: 1px solid var(--line); color: var(--ink-soft); }
.compare-them li::before { content: "—"; color: #a89b7e; }
.compare-us { background: var(--forest); color: var(--on-dark); }
.compare-us h3 { color: var(--on-dark); }
.compare-us li { color: var(--on-dark-soft); }
.compare-us li::before { content: "✓"; color: var(--accent-warm); }
.compare-us strong { color: var(--on-dark); }
@media (max-width: 760px) { .compare { grid-template-columns: 1fr; } }

/* ---------- Bandeau citation ---------- */
.quote-band { background: var(--cream-soft); padding: clamp(3.5rem, 7vw, 6rem) 0; border-block: 1px solid var(--line); }
.quote-band blockquote {
  font-family: var(--serif); font-size: clamp(1.5rem, 3.4vw, 2.4rem);
  line-height: 1.28; font-weight: 500; letter-spacing: -0.01em;
  margin: 0 auto; max-width: 22ch; text-align: center; color: var(--ink);
}
.quote-by { text-align: center; margin-top: 1.5rem; color: var(--ink-soft); font-weight: 500; }

/* ---------- Offre ---------- */
.section-soft { background: var(--cream-soft); }
.offer-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.25rem, 2.5vw, 2rem); align-items: start; }
.offer-card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(1.6rem, 2.8vw, 2.2rem); position: relative;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.offer-card:hover { transform: translateY(-4px); box-shadow: 0 20px 45px -26px rgba(28,42,36,0.45); }
.offer-featured { background: var(--forest); color: var(--on-dark); border-color: var(--forest); }
.offer-featured h3, .offer-featured .offer-tag { color: var(--on-dark); }
.offer-badge {
  position: absolute; top: -0.8rem; left: clamp(1.6rem, 2.8vw, 2.2rem);
  background: var(--accent-warm); color: var(--forest);
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.35rem 0.75rem; border-radius: 999px;
}
.offer-card h3 { font-size: 1.5rem; margin-bottom: 0.4rem; }
.offer-tag { font-family: var(--serif); font-style: italic; color: var(--accent); margin-bottom: 1rem; }
.offer-featured .offer-tag { color: var(--accent-warm); }
.offer-desc { font-size: 0.96rem; color: var(--ink-soft); }
.offer-featured .offer-desc { color: var(--on-dark-soft); }
.offer-list { list-style: none; margin: 1.25rem 0 0; padding: 1.25rem 0 0; border-top: 1px solid var(--line); }
.offer-featured .offer-list { border-color: var(--line-dark); }
.offer-list li { position: relative; padding-left: 1.5rem; margin-bottom: 0.6rem; font-size: 0.94rem; }
.offer-list li::before { content: "·"; position: absolute; left: 0.3rem; color: var(--accent-warm); font-weight: 800; font-size: 1.3rem; line-height: 1; top: -0.05em; }
.offer-note { text-align: center; margin-top: 2.5rem; color: var(--ink-soft); max-width: 60ch; margin-inline: auto; }
@media (max-width: 900px) { .offer-grid { grid-template-columns: 1fr; } .offer-badge { left: 1.6rem; } }

/* ---------- FAQ ---------- */
.faq { display: flex; flex-direction: column; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary {
  font-family: var(--serif); font-size: clamp(1.1rem, 2vw, 1.3rem); font-weight: 500;
  padding: 1.3rem 2.5rem 1.3rem 0; cursor: pointer; position: relative;
  list-style: none; color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 0.2rem; top: 50%; transform: translateY(-50%);
  font-family: var(--sans); font-size: 1.6rem; font-weight: 300; color: var(--accent);
  transition: transform 0.25s var(--ease);
}
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { color: var(--ink-soft); margin: 0 0 1.4rem; max-width: 68ch; font-size: 0.98rem; }

/* ---------- CTA finale / contact ---------- */
.cta-final {
  background:
    radial-gradient(120% 120% at 10% -20%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 55%),
    var(--forest);
  color: var(--on-dark); padding: clamp(4rem, 8vw, 7rem) 0;
}
.cta-final h2 { color: var(--on-dark); font-size: clamp(2rem, 5vw, 3.2rem); }
.cta-lede { color: var(--on-dark-soft); font-size: 1.12rem; max-width: 56ch; margin: 1.25rem 0 2.5rem; }

.contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.field { display: flex; flex-direction: column; }
.field-wide { grid-column: 1 / -1; }
.field label { font-size: 0.85rem; font-weight: 600; color: var(--on-dark-soft); margin-bottom: 0.45rem; }
.field input, .field textarea {
  font-family: var(--sans); font-size: 1rem; color: var(--on-dark);
  background: var(--forest-2); border: 1px solid var(--line-dark);
  border-radius: 10px; padding: 0.8rem 1rem; min-height: 48px;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.field textarea { resize: vertical; min-height: 92px; }
.field input::placeholder, .field textarea::placeholder { color: #7f897f; }
.field input:focus, .field textarea:focus { border-color: var(--accent-warm); background: #2a3b35; outline: none; }
.form-hint { font-size: 0.85rem; color: var(--on-dark-soft); margin: 0.8rem 0 0; }
@media (max-width: 600px) { .contact-form { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */
.site-footer { background: var(--forest-2); color: var(--on-dark); padding: clamp(2.5rem, 5vw, 3.5rem) 0; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 2rem; justify-content: space-between; align-items: flex-start; }
.footer-brand { max-width: 38ch; }
.footer-brand .brand-name { font-size: 1.3rem; }
.footer-brand p { color: var(--on-dark-soft); font-size: 0.95rem; margin-top: 0.6rem; }
.footer-meta { text-align: right; }
.footer-meta p { color: var(--on-dark-soft); font-size: 0.85rem; margin: 0 0 0.4rem; }
@media (max-width: 700px) { .footer-meta { text-align: left; } }