/* =========================================================
   CBTA Rénovation — Design haut de gamme
   Blanc/crème · accent bleu marine · Cormorant + Inter
   ========================================================= */

:root {
  --cream:       #F5F0E8;
  --cream-2:     #EDE7DC;
  --white:       #FEFCF8;
  --ink:         #0F0F0D;
  --ink-soft:    #3A3834;
  --muted:       #7A776E;
  --muted-light: #B0ADA5;
  --navy:        #1C2D5E;
  --navy-hover:  #152348;
  --navy-pale:   #E6EAF3;
  --line:        rgba(15,15,13,.09);
  --line-dark:   rgba(254,252,248,.14);

  --font-display: 'Fraunces', Georgia, serif;
  --font-body:    'Figtree', system-ui, sans-serif;

  --maxw: 1200px;
  --pad:  clamp(1.25rem, 5vw, 4rem);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ---------- Typo ---------- */
h1,h2,h3,h4 { font-family:var(--font-display); font-weight:400; line-height:1.06; letter-spacing:-.01em; }
.h-xxl { font-size: clamp(3.2rem, 8.5vw, 7rem); line-height: .98; }
.h-xl  { font-size: clamp(2.4rem, 5.5vw, 4.2rem); }
.h-l   { font-size: clamp(1.7rem, 3.5vw, 2.6rem); }
.h-m   { font-size: clamp(1.2rem, 2vw, 1.55rem); }
p { max-width: 62ch; }
.lead { font-size: clamp(1rem,1.5vw,1.15rem); color: var(--muted); font-weight:400; line-height:1.8; }

.eyebrow {
  font-family: var(--font-body);
  font-size:.68rem; font-weight:500; letter-spacing:.22em; text-transform:uppercase;
  color: var(--navy); display:inline-flex; align-items:center; gap:.75rem;
}
.eyebrow::before { content:""; width:22px; height:1px; background:var(--navy); }
.on-dark .eyebrow, .on-navy .eyebrow { color:rgba(255,255,255,.45); }
.on-dark .eyebrow::before, .on-navy .eyebrow::before { background:rgba(255,255,255,.45); }

/* ---------- Layout ---------- */
.container { max-width:var(--maxw); margin-inline:auto; padding-inline:var(--pad); }
section { padding-block: clamp(3rem,7vw,5.5rem); }
.on-dark  { background:var(--ink); color:var(--white); }
.on-dark p, .on-dark .lead { color:var(--muted-light); }
.on-chalk { background:var(--cream); }
.on-navy  { background:var(--navy); color:var(--white); }
.on-navy p, .on-navy .lead { color:rgba(255,255,255,.6); }
.grid { display:grid; gap:clamp(1rem,2.5vw,2rem); }

/* ---------- Buttons ---------- */
.btn {
  display:inline-flex; align-items:center; gap:.6rem;
  font-family:var(--font-body); font-weight:500; font-size:.8rem;
  letter-spacing:.1em; text-transform:uppercase;
  padding:.95rem 2rem; border:1px solid transparent;
  transition:background .25s,color .25s,border-color .25s,transform .2s;
  cursor:pointer;
}
.btn:focus-visible { outline:2px solid var(--navy); outline-offset:3px; }
.btn-primary { background:var(--navy); color:var(--white); border-color:var(--navy); }
.btn-primary:hover { background:var(--navy-hover); border-color:var(--navy-hover); transform:translateY(-1px); }
.btn-ghost { border-color:currentColor; }
.btn-ghost:hover { background:rgba(28,45,94,.06); transform:translateY(-1px); }
.on-navy .btn-ghost { border-color:rgba(255,255,255,.4); color:var(--white); }
.on-navy .btn-ghost:hover { background:rgba(255,255,255,.08); }
.on-navy .btn-primary { background:var(--white); color:var(--navy); border-color:var(--white); }
.on-navy .btn-primary:hover { background:var(--cream); border-color:var(--cream); }
.on-dark .btn-ghost { border-color:rgba(254,252,248,.35); color:var(--white); }
.on-dark .btn-ghost:hover { background:rgba(255,255,255,.06); }
.btn-arrow::after { content:"→"; transition:transform .2s; }
.btn-arrow:hover::after { transform:translateX(4px); }

/* ---------- Nav ---------- */
.nav {
  position:sticky; top:0; z-index:50;
  background:var(--white); border-bottom:1px solid var(--line);
}
.nav-inner { display:flex; align-items:center; justify-content:space-between; height:90px; }
.nav .container { padding-inline-end: 0; }
.brand { font-family:var(--font-display); font-weight:500; font-size:1.5rem; letter-spacing:.04em; color:var(--ink); }
.brand span { color:var(--navy); }
.brand-logo { display:flex; align-items:center; }
.brand-logo img { height:88px; width:auto; display:block; }
.nav-links { display:flex; gap:1.8rem; align-items:center; margin-left:auto; margin-right:calc(-1 * clamp(1.25rem,5vw,4rem)); padding-right:clamp(1.25rem,5vw,4rem); }
.nav-links a { color:var(--ink); font-size:.85rem; font-weight:400; letter-spacing:.08em; text-transform:uppercase; transition:color .2s; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color:var(--ink); opacity:.7; }
.nav .btn { padding:.65rem 1.3rem; font-size:.85rem; }
.nav .btn-primary { background:var(--white); color:var(--navy); border-color:var(--navy); }
.nav .btn-primary:hover { background:var(--navy); color:var(--white); }
.nav-toggle { display:none; background:none; border:0; color:var(--ink); cursor:pointer; font-size:1.2rem; }

/* ---------- Hero ---------- */
.hero {
  position:relative; overflow:hidden;
  background:var(--cream);
  padding-block:clamp(3.5rem,9vw,8rem);
}
.hero .container { position:relative; z-index:2; }
.hero h1 { max-width:16ch; margin-block:.5rem 1rem; }
.hero .lead { max-width:48ch; }
.hero-cta { display:flex; gap:1rem; flex-wrap:wrap; margin-top:2rem; }
.arch {
  position:absolute; border-radius:50% 50% 0 0 / 100% 100% 0 0;
  pointer-events:none;
}
.hero .arch {
  width:min(38vw,360px); aspect-ratio:1/1.65;
  right:calc(var(--pad) + 4vw); bottom:-2px;
  background:var(--navy); opacity:.07; z-index:1;
}
.hero .arch.outline {
  width:min(16vw,120px); left:-25px; top:28%;
  background:none; border:1px solid var(--navy); opacity:.12;
}

/* ---------- Trust strip ---------- */
.strip { background:var(--ink); color:var(--muted-light); }
.strip .container {
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:0; padding-block:0;
}
.strip-item {
  display:flex; flex-direction:column; align-items:center; justify-content:flex-start;
  text-align:center; padding:1.8rem 1.5rem;
  border-right:1px solid var(--line-dark);
  gap:.5rem;
}
.strip-item:last-child { border-right:none; }
.strip-label { font-size:.72rem; font-weight:600; letter-spacing:.2em; text-transform:uppercase; color:rgba(255,255,255,.45); }
.strip-value { font-family:var(--font-display); font-size:clamp(.95rem,1.8vw,1.2rem); font-weight:500; color:var(--white); letter-spacing:.01em; }
@media(max-width:520px){
  .strip .container { grid-template-columns:1fr; }
  .strip-item { border-right:none; border-bottom:1px solid var(--line-dark); padding:1.3rem 1.5rem; }
  .strip-item:last-child { border-bottom:none; }
}

/* ---------- Section head ---------- */
.sec-head {
  display:flex; flex-wrap:wrap; gap:1.2rem 3rem;
  align-items:end; justify-content:space-between;
  margin-bottom:clamp(1.8rem,3.5vw,3rem);
}
.sec-head .lead { max-width:44ch; }

/* ---------- Cards ---------- */
.cards { grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); }
.card {
  background:var(--white); border:1px solid var(--line);
  padding:1.8rem 1.8rem;
  display:flex; flex-direction:column; gap:.6rem; min-height:210px;
  transition:border-color .3s;
}
.card:hover { border-color:var(--navy); }
.card .num { font-family:var(--font-body); font-weight:400; font-size:.65rem; letter-spacing:.2em; text-transform:uppercase; color:var(--navy); }
.card h3 { font-family:var(--font-display); font-size:1.35rem; font-weight:500; margin-top:.4rem; }
.card p { color:var(--muted); font-size:.96rem; margin-top:.2rem; }
.card a.more { margin-top:1.2rem; font-size:.72rem; font-weight:500; letter-spacing:.12em; text-transform:uppercase; color:var(--navy); }
.card a.more::after { content:" →"; }

/* ---------- Placeholders photo ---------- */
.ph {
  position:relative; overflow:hidden;
  display:flex; align-items:flex-end; color:#fff;
  font-family:var(--font-body); font-size:.75rem; letter-spacing:.04em;
  min-height:220px;
}
.ph span { position:relative; z-index:2; padding:.8rem 1rem; background:rgba(0,0,0,.22); width:100%; backdrop-filter:blur(3px); }
.ph::before { content:"📷 "; opacity:.8; }
.ph.marine  { background:linear-gradient(135deg,#1C2D5E,#0D1830); }
.ph.terrazzo {
  background:#EDE8DF;
  background-image:
    radial-gradient(circle at 20% 30%,#8B7355 0 5px,transparent 6px),
    radial-gradient(circle at 70% 60%,#1C2D5E 0 4px,transparent 5px),
    radial-gradient(circle at 45% 80%,#2A2825 0 3px,transparent 4px),
    radial-gradient(circle at 85% 25%,#C4B99A 0 4px,transparent 5px);
  color:var(--ink);
}
.ph.terrazzo span { background:rgba(255,255,255,.55); color:var(--ink); }
.ph.beton { background:linear-gradient(135deg,#3A3630,#1A1712); }
.ph.sand  { background:linear-gradient(135deg,#D4C5B5,#A89278); }
.ph.stone { background:linear-gradient(135deg,#8B7355,#5C4A32); }

/* ---------- Real photos ---------- */
.ph-img { overflow:hidden; min-height:220px; }
.ph-img img { width:100%; height:100%; object-fit:cover; display:block; min-height:inherit; }
.feature .ph-img { min-height:min(60vh,500px); }

/* ---------- Hero avec photo de fond ---------- */
.hero-photo { position:relative; background:var(--ink); }
.hero-photo .hero-bg { position:absolute; inset:0; width:100%; height:100%; object-fit:cover; z-index:0; opacity:.45; }
.hero-photo .container { position:relative; z-index:2; }
.hero-photo h1 { color:var(--white); }
.hero-photo .lead { color:rgba(255,255,255,.7); }
.hero-photo .eyebrow { color:rgba(255,255,255,.55); }
.hero-photo .eyebrow::before { background:rgba(255,255,255,.55); }
.hero-photo .btn-ghost { border-color:rgba(255,255,255,.45); color:var(--white); }
.hero-photo .btn-ghost:hover { background:rgba(255,255,255,.08); }
.hero-photo .arch { opacity:.12; background:var(--white); }

/* ---------- Feature ---------- */
.feature { display:grid; grid-template-columns:1.05fr .95fr; gap:clamp(2rem,4vw,4rem); align-items:center; }
.feature .ph { min-height:min(60vh,500px); }
.feature .meta { display:flex; gap:2rem; flex-wrap:wrap; margin:1.8rem 0; }
.feature .meta div { color:var(--muted); font-size:.88rem; }
.feature .meta div b { display:block; font-family:var(--font-display); color:var(--ink); font-size:1.1rem; font-weight:500; }
.on-dark .feature .meta div b { color:var(--white); }

/* ---------- Steps ---------- */
.steps { grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); }
.step { padding-top:1.5rem; border-top:1px solid var(--line); }
.on-dark .step { border-top-color:var(--line-dark); }
.on-navy .step { border-top-color:rgba(255,255,255,.15); }
.on-chalk .step { border-top-color:rgba(15,15,13,.12); }
.step .n { font-family:var(--font-body); font-weight:400; font-size:.65rem; letter-spacing:.22em; text-transform:uppercase; color:var(--navy); }
.on-dark .step .n, .on-navy .step .n { color:rgba(255,255,255,.35); }
.step h3 { font-family:var(--font-display); font-size:1.2rem; font-weight:500; margin:.65rem 0 .5rem; }
.step p  { color:var(--muted); font-size:.94rem; }
.on-dark .step p { color:var(--muted-light); }
.on-navy .step p { color:rgba(255,255,255,.55); }

/* ---------- Gallery ---------- */
.gallery { grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); }
.tile { overflow:hidden; display:block; transition:opacity .3s; }
.tile:hover { opacity:.82; }
.tile .ph { min-height:320px; }
.tile .ph-img { aspect-ratio:4/3; min-height:unset; }
.tile .ph-img img { height:100%; }
.tile .cap { padding:1.2rem 0 .3rem; }
.tile .cap b { font-family:var(--font-display); font-size:1.2rem; font-weight:500; display:block; }
.tile .cap span { color:var(--muted); font-size:.85rem; }

/* ---------- Prose ---------- */
.prose { max-width:68ch; }
.prose h2 { margin-top:3rem; margin-bottom:.8rem; font-size:1.9rem; }
.prose h3 { margin-top:2rem; margin-bottom:.5rem; font-size:1.3rem; font-weight:500; }
.prose p  { margin-bottom:1.1rem; color:var(--ink-soft); }
.prose ul { margin:0 0 1.4rem 1.1rem; color:var(--ink-soft); }
.prose li { margin-bottom:.5rem; }

/* ---------- Contact ---------- */
.form { display:grid; gap:1.2rem; max-width:560px; }
.row  { display:grid; gap:1rem; grid-template-columns:1fr 1fr; }
.field { display:flex; flex-direction:column; gap:.45rem; }
.field label { font-size:.72rem; font-weight:500; letter-spacing:.12em; text-transform:uppercase; color:var(--ink-soft); }
.field input,.field textarea,.field select {
  font-family:var(--font-body); font-size:.97rem; padding:.9rem 1rem;
  border:1px solid var(--line); border-radius:0;
  background:var(--white); color:var(--ink); transition:border-color .2s;
}
.field input:focus,.field textarea:focus,.field select:focus {
  outline:none; border-color:var(--navy); box-shadow:0 0 0 3px var(--navy-pale);
}
.contact-grid { display:grid; grid-template-columns:1fr 1fr; gap:clamp(2rem,6vw,6rem); align-items:start; }
.info-line { display:flex; gap:1rem; padding:1.1rem 0; border-bottom:1px solid var(--line); }
.info-line b { font-family:var(--font-display); font-size:1rem; font-weight:500; min-width:90px; }

/* ---------- Footer ---------- */
.footer { background:var(--ink); color:var(--muted-light); padding-block:3rem 2rem; }
.footer-top { display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:2rem; }
.footer h4 { color:rgba(254,252,248,.3); font-size:.65rem; letter-spacing:.22em; text-transform:uppercase; margin-bottom:1.2rem; font-weight:500; }
.footer a { color:var(--muted-light); font-size:.92rem; display:block; padding:.28rem 0; transition:color .2s; }
.footer a:hover { color:var(--white); }
.footer .brand { margin-bottom:.8rem; color:var(--white); font-size:1.45rem; }
.footer .brand span { color:#5A7AC7; }
.footer p { font-size:.9rem; max-width:26ch; }
.footer-bottom {
  margin-top:2rem; padding-top:1.2rem; border-top:1px solid rgba(254,252,248,.07);
  display:flex; flex-wrap:wrap; gap:.5rem 1.5rem; justify-content:space-between; align-items:center; font-size:.8rem;
  color:var(--white);
}
.footer-bottom a { color:rgba(255,255,255,.55); text-decoration:none; transition:color .2s; }
.footer-bottom a:hover { color:var(--white); }

/* ---------- CTA ---------- */
.cta-band { text-align:center; }
.cta-band h2 { max-width:18ch; margin:0 auto 1.6rem; }
.cta-band .hero-cta { justify-content:center; }

/* ---------- Témoignages ---------- */
.testimonials { grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); }
.testimonial {
  padding:2.2rem; border:1px solid var(--line);
  display:flex; flex-direction:column; gap:1rem; background:var(--white);
}
.stars { color:var(--navy); font-size:.85rem; letter-spacing:.08em; }
.testimonial blockquote {
  font-family:var(--font-display); font-size:1.08rem; font-weight:400;
  line-height:1.7; color:var(--ink-soft); font-style:italic; flex:1;
}
.testimonial cite {
  font-size:.75rem; font-weight:500; letter-spacing:.1em; text-transform:uppercase;
  color:var(--muted); display:block; font-style:normal;
  border-top:1px solid var(--line); padding-top:.9rem;
}

/* ---------- FAQ ---------- */
.faq-list { display:flex; flex-direction:column; border-top:1px solid var(--line); }
.faq-item { border-bottom:1px solid var(--line); }
.faq-q {
  font-family:var(--font-display); font-weight:400; font-size:clamp(1.05rem,1.6vw,1.2rem);
  padding:1.6rem 3rem 1.6rem 0; cursor:pointer; list-style:none; position:relative; color:var(--ink);
}
.faq-q::-webkit-details-marker { display:none; }
.faq-q::after {
  content:"+"; position:absolute; right:0; top:50%; transform:translateY(-50%);
  font-size:1.5rem; font-family:var(--font-body); font-weight:300; color:var(--navy);
  transition:transform .25s;
}
.faq-item[open] .faq-q::after { transform:translateY(-50%) rotate(45deg); }
.faq-a { padding:.2rem 3rem 1.6rem 0; color:var(--muted); max-width:70ch; line-height:1.8; font-size:.97rem; }

/* ---------- Responsive ---------- */
@media (max-width:820px) {
  .nav-links {
    position:fixed; inset:90px 0 auto 0; background:var(--white);
    flex-direction:column; gap:0; padding:1.5rem var(--pad) 2rem;
    border-bottom:1px solid var(--line);
    margin:0; /* reset negative margin from desktop */
    transform:translateY(-120%); transition:transform .3s ease;
  }
  .nav-links[data-open="true"] { transform:translateY(0); }
  .nav-links a { padding:.9rem 0; width:100%; border-bottom:1px solid var(--line); font-size:.9rem; }
  .nav .btn { margin-left:0; width:100%; justify-content:center; margin-top:.5rem; }
  .nav-toggle { display:block; }

  .h-xxl { font-size: clamp(2.2rem, 9vw, 3.2rem); }
  .h-xl  { font-size: clamp(1.8rem, 7vw, 2.4rem); }
  .h-l   { font-size: clamp(1.4rem, 5vw, 1.7rem); }
  .lead  { font-size: 1rem; }

  .hero { padding-block: clamp(2.5rem,8vw,4rem); }
  .hero h1 { margin-block:.4rem .8rem; }
  .hero-cta { flex-direction:column; gap:.75rem; }
  .hero-cta .btn { width:100%; justify-content:center; }

  .feature { grid-template-columns:1fr; }
  .feature .ph-img { min-height:220px; }
  .contact-grid { grid-template-columns:1fr; }
  .footer-top { grid-template-columns:1fr 1fr; }
  .row { grid-template-columns:1fr; }
  .sec-head { flex-direction:column; align-items:flex-start; gap:1rem; }

  /* Prescripteurs section index — stack on mobile */
  [style*="grid-template-columns:1fr min(42%"] { grid-template-columns:1fr !important; }
  [style*="grid-template-columns:1fr min(40%"] { grid-template-columns:1fr !important; }
}
@media (max-width:520px) {
  .footer-top { grid-template-columns:1fr; }
  .strip .container { grid-template-columns:1fr; }
  .strip-item { border-right:none; border-bottom:1px solid var(--line-dark); padding:1.3rem 1.5rem; }
  .strip-item:last-child { border-bottom:none; }
}
@media (prefers-reduced-motion:reduce) { *{animation:none!important;transition:none!important;scroll-behavior:auto!important} }

/* ---------- Reveal ---------- */
.reveal { opacity:0; transform:translateY(12px); animation:rise .85s ease forwards; }
.reveal.d1 { animation-delay:.08s; }
.reveal.d2 { animation-delay:.18s; }
.reveal.d3 { animation-delay:.28s; }
@keyframes rise { to { opacity:1; transform:none; } }