/* ============================================================
   Berthoud Charpente — Stylesheet
   Modern, elegant artisan website
   ============================================================ */

:root{
  --bg: #faf7f2;
  --bg-alt: #f1ece3;
  --ink: #1f2a24;
  --ink-soft: #4a544d;
  --muted: #8a8579;
  --line: #e6e0d3;
  --accent: #8b5e2a;       /* warm wood */
  --accent-deep: #6f4a1f;
  --gold: #c8a567;
  --green-deep: #1f2a24;   /* near-black green */
  --green: #2c3a32;
  --white: #ffffff;
  --shadow-sm: 0 2px 6px rgba(31,42,36,.06);
  --shadow:    0 12px 40px rgba(31,42,36,.10);
  --shadow-lg: 0 24px 60px rgba(31,42,36,.18);
  --radius: 14px;
  --radius-lg: 22px;
  --maxw: 1200px;
  --header-h: 78px;
  --serif: "Cormorant Garamond", "Playfair Display", Georgia, serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

html{ scroll-behavior:smooth; scroll-padding-top: var(--header-h); }
body{
  margin:0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;   /* prevent horizontal scroll on small screens */
}

img{ display:block; max-width:100%; height:auto; }
a{ color: inherit; text-decoration:none; }
button{ font: inherit; cursor:pointer; }

.container{ max-width: var(--maxw); margin:0 auto; padding: 0 28px; }

/* ============== HEADER / NAV ============== */
.site-header{
  position: fixed; inset: 0 0 auto 0;
  height: var(--header-h);
  background: rgba(250,247,242,.78);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  z-index: 100;
  transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.site-header.scrolled{
  background: rgba(250,247,242,.94);
  border-bottom-color: var(--line);
  box-shadow: var(--shadow-sm);
}
.nav-wrap{
  max-width: var(--maxw); margin:0 auto;
  height:100%; padding: 0 28px;
  display:flex; align-items:center; gap: 32px;
}

.brand{
  display:flex; align-items:center; gap:12px;
  font-family: var(--serif); letter-spacing:.5px;
}
.brand-mark{
  width:42px; height:42px; border-radius: 50%;
  display:grid; place-items:center;
  font-family: var(--serif); font-size: 22px; font-weight:600;
  color: var(--bg);
  background: linear-gradient(135deg, var(--green-deep), var(--accent));
  box-shadow: var(--shadow-sm);
}
.brand-text{ display:flex; flex-direction:column; line-height:1; }
.brand-text strong{ font-size: 19px; font-weight:600; letter-spacing:.5px; }
.brand-text span{ font-size: 11px; letter-spacing:3px; text-transform:uppercase; color: var(--muted); margin-top:3px; }

.main-nav{ margin-left:auto; }
.main-nav ul{
  list-style:none; padding:0; margin:0;
  display:flex; gap: 6px;
}
.main-nav a{
  display:inline-block;
  padding: 10px 14px;
  font-size: 14px; font-weight: 500;
  color: var(--ink-soft);
  border-radius: 10px;
  position: relative;
  transition: color .2s ease, background .2s ease;
}
.main-nav a:hover{ color: var(--ink); background: rgba(31,42,36,.05); }
.main-nav a.active{ color: var(--ink); }
.main-nav a.active::after{
  content:""; position:absolute; left:14px; right:14px; bottom:4px;
  height:2px; background: var(--accent); border-radius: 2px;
}

.cta-wrap{ position: relative; }
.cta-call{
  display:inline-flex; align-items:center; gap:8px;
  padding: 11px 18px; border-radius: 999px;
  background: var(--green-deep); color: var(--bg);
  font-size: 14px; font-weight:600;
  border: 0;
  transition: transform .2s ease, background .2s ease, box-shadow .2s ease;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}
.cta-call:hover{ background: var(--accent); transform: translateY(-1px); box-shadow: var(--shadow); }
.cta-call[aria-expanded="true"]{ background: var(--accent); }

.cta-popover{
  position: absolute;
  top: calc(100% + 14px);
  right: 0;
  min-width: 240px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  padding: 18px 22px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  opacity: 0;
  transform: translateY(-8px) scale(.96);
  pointer-events: none;
  transition: opacity .25s ease, transform .25s cubic-bezier(.2,.7,.2,1);
  z-index: 110;
}
.cta-popover::before{
  content: "";
  position: absolute; top: -7px; right: 28px;
  width: 14px; height: 14px;
  background: var(--bg);
  border-left: 1px solid var(--line);
  border-top: 1px solid var(--line);
  transform: rotate(45deg);
}
.cta-popover.open{
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.cta-popover-label{
  font-size: 11px; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--muted); font-weight: 600;
}
.cta-popover-number{
  font-family: var(--serif);
  font-size: 26px; font-weight: 600;
  color: var(--ink);
  letter-spacing: .5px;
  transition: color .2s ease;
}
.cta-popover-number:hover{ color: var(--accent); }
.cta-popover-hours{
  font-size: 12px; color: var(--muted);
  margin-top: 2px;
}

.burger{
  display:none;
  background:transparent; border:0;
  padding: 10px;
  width: 44px; height: 44px;
  cursor: pointer;
  position: relative;
  -webkit-tap-highlight-color: transparent;
}
.burger span{
  display: block;
  height: 2.5px;
  width: 22px;
  background: var(--ink);
  margin: 5px auto;
  border-radius: 3px;
  transition: transform .35s cubic-bezier(.2,.7,.2,1), opacity .2s ease, width .3s ease;
}
.burger[aria-expanded="true"] span{ width: 22px; }
.burger[aria-expanded="true"] span:nth-child(1){ transform: translateY(7.5px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2){ opacity: 0; transform: translateX(8px); }
.burger[aria-expanded="true"] span:nth-child(3){ transform: translateY(-7.5px) rotate(-45deg); }

/* ============== HERO ============== */
.hero{
  position:relative;
  min-height: 100vh;
  min-height: 100svh;        /* iOS Safari: handle dynamic toolbar */
  display:flex; align-items:center;
  overflow:hidden;
  color: #fff;
  isolation: isolate;
}
.hero-bg{
  position:absolute; inset:0;
  background:
    url('pexels-ron-lach-8817851.jpg') center/cover no-repeat;
  transform: scale(1.05);
  animation: heroZoom 18s ease-out forwards;
  z-index:-2;
}
@keyframes heroZoom { to { transform: scale(1); } }
.hero-overlay{
  position:absolute; inset:0;
  background:
    radial-gradient(ellipse at 30% 30%, rgba(31,42,36,.55), rgba(31,42,36,.85) 70%),
    linear-gradient(180deg, rgba(31,42,36,.4) 0%, rgba(31,42,36,.85) 100%);
  z-index:-1;
}
.hero-spotlight{
  position: absolute; inset: 0;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 50%), rgba(200,165,103,.18), transparent 60%);
  pointer-events: none;
  z-index: 0;
  transition: opacity .4s ease;
  mix-blend-mode: screen;
}
.hero-grain{
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/><feColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .12 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  opacity: .35;
  pointer-events: none;
  z-index: 0;
  mix-blend-mode: overlay;
}

/* Hero h1 line reveal */
.reveal-line{
  display: block;
  overflow: hidden;
  line-height: .78;
  margin: 0; padding: 0;
}
.reveal-line > span{
  display: inline-block;
  transform: translateY(110%);
  animation: lineUp 1.1s cubic-bezier(.2,.7,.2,1) forwards;
  line-height: .9;
}
.reveal-line:nth-of-type(1) > span{ animation-delay: .2s; }
.reveal-line:nth-of-type(2) > span{ animation-delay: .4s; }
@keyframes lineUp{ to{ transform: translateY(0); } }
.hero-content{
  max-width: var(--maxw); width:100%;
  margin: 0 auto; padding: 160px 28px 120px;
  position: relative; z-index: 1;
}
.eyebrow{
  display:inline-flex; align-items: center; gap: 10px;
  padding: 8px 18px; border-radius: 999px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.22);
  font-size: 12px; letter-spacing: 3.5px; text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 32px;
  backdrop-filter: blur(10px);
}
.eyebrow::before{
  content: ""; width: 6px; height: 6px;
  border-radius: 50%; background: var(--gold);
  box-shadow: 0 0 12px var(--gold);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse{
  50%{ transform: scale(1.3); opacity: .7; }
}

.hero h1{
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(56px, 10.5vw, 148px);
  line-height: .78;
  letter-spacing: -3px;
  margin: 0 0 32px;
  text-wrap: balance;
}
.hero h1 em{
  font-style: italic;
  color: var(--gold);
  font-weight: 400;
  font-size: 1.04em;
  letter-spacing: -3.5px;
}
.hero .lede{
  font-size: clamp(17px, 1.7vw, 21px);
  max-width: 580px;
  color: rgba(255,255,255,.82);
  margin: 0 0 44px;
  line-height: 1.55;
  font-weight: 300;
}
.hero-cta{ display:flex; flex-wrap:wrap; gap: 14px; margin-bottom: 72px; }

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap: 8px;
  padding: 15px 28px; border-radius: 999px;
  font-weight: 600; font-size: 15px; letter-spacing: .2px;
  border: 1.5px solid transparent;
  transition: transform .2s ease, background .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease;
  cursor: pointer;
}
.btn-primary{ background: var(--gold); color: var(--green-deep); box-shadow: 0 10px 30px rgba(200,165,103,.35); }
.btn-primary:hover{ background:#d8b577; transform: translateY(-2px); }
.btn-ghost{ background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
.btn-ghost:hover{ background: rgba(255,255,255,.1); border-color: #fff; }
.btn-block{ width:100%; }

.hero-trust{
  display:flex; gap: 64px; flex-wrap: wrap;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,.15);
}
.hero-trust > div{ display:flex; flex-direction:column; gap: 4px; }
.hero-trust strong{
  font-family: var(--serif);
  font-size: clamp(36px, 4vw, 48px);
  font-weight: 500;
  letter-spacing: -1px;
  color: #fff;
  line-height: 1;
}
.hero-trust span{
  font-size: 12px; color: rgba(255,255,255,.65);
  letter-spacing: 2px; text-transform: uppercase;
  font-weight: 500;
}

.scroll-down{
  position:absolute; left:50%; bottom: 28px;
  transform: translateX(-50%);
  width: 28px; height: 46px; border: 1.5px solid rgba(255,255,255,.5);
  border-radius: 14px;
}
.scroll-down span{
  position:absolute; left:50%; top:8px;
  width: 4px; height: 8px; background: #fff; border-radius:2px;
  transform: translateX(-50%);
  animation: scrollDot 1.6s ease-in-out infinite;
}
@keyframes scrollDot {
  0%   { opacity: 0; transform: translate(-50%, 0); }
  40%  { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, 14px); }
}

/* ============== SECTIONS ============== */
.section{ padding: clamp(80px, 10vw, 140px) 0; }
.section-eyebrow{
  display:inline-block;
  font-size: 12px; letter-spacing: 4px; text-transform: uppercase;
  color: var(--accent); font-weight: 600;
  margin-bottom: 18px;
}
.section h2{
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(34px, 4.5vw, 56px);
  line-height: 1.1;
  letter-spacing: -.5px;
  margin: 0 0 20px;
}
.section p{ color: var(--ink-soft); }

.section-head{ max-width: 720px; margin: 0 auto 64px; text-align: center; }
.section-head h2{ margin-bottom: 16px; }
.section-head p{ font-size: 17px; }

.two-col{
  display:grid; grid-template-columns: 1fr 1fr; gap: 80px;
  align-items: center;
}

/* ============== ABOUT ============== */
.about{ background: var(--bg); }
.about-img{ position: relative; }
.about-img img{
  width: 100%; aspect-ratio: 4/5; object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.about-img-badge{
  position: absolute; bottom: 24px; left: 24px;
  background: var(--bg);
  padding: 16px 22px; border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex; flex-direction: column;
}
.about-img-badge strong{ font-family: var(--serif); font-size: 22px; }
.about-img-badge span{ font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); }

.about-text p{ font-size: 17px; margin: 0 0 18px; }
.about-list{
  list-style: none; padding: 0; margin: 28px 0 0;
  display:grid; grid-template-columns: 1fr 1fr; gap: 14px 24px;
}
.about-list li{
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 15px; font-weight: 500; color: var(--ink);
}
.about-list svg{ color: var(--accent); flex-shrink: 0; }

/* ============== SERVICES ============== */
.services{ background: var(--bg-alt); }
.services-grid{
  display:grid; grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.service-card{
  background: var(--bg);
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
}
.service-card:hover{
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: transparent;
}
.service-icon{
  width: 60px; height: 60px;
  border-radius: 14px;
  display: grid; place-items:center;
  background: linear-gradient(135deg, rgba(139,94,42,.1), rgba(200,165,103,.18));
  color: var(--accent-deep);
  margin-bottom: 22px;
}
.service-card h3{
  font-family: var(--serif);
  font-weight: 600;
  font-size: 24px;
  margin: 0 0 10px;
}
.service-card p{ margin: 0; font-size: 15px; }

/* ============== WORK / PROJECTS ============== */
.work{ background: var(--bg); position: relative; }
.work::before{
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(800px 300px at 10% 0%, rgba(200,165,103,.07), transparent 60%),
    radial-gradient(600px 300px at 90% 100%, rgba(139,94,42,.05), transparent 60%);
  pointer-events: none;
}
.projects-grid{
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 360px;
  gap: 22px;
  position: relative;
}
.project-card{
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  cursor: pointer;
  transform-style: preserve-3d;
  transform: perspective(1200px);
  transition: transform .25s cubic-bezier(.2,.7,.2,1), box-shadow .35s ease;
  isolation: isolate;
  grid-column: span 2;
}
.project-card.project-large{ grid-column: span 3; }
.project-card:hover{ box-shadow: var(--shadow-lg); }

.project-img{
  position: absolute; inset: 0;
  overflow: hidden;
  transform: translateZ(0);
}
.project-img img{
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1s cubic-bezier(.2,.7,.2,1), filter .6s ease;
  transform: scale(1.05);
}
.project-card:hover .project-img img{ transform: scale(1.13); filter: brightness(.9); }

.project-card::after{
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(31,42,36,.92) 100%);
  pointer-events: none;
  z-index: 1;
}

.project-info{
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 28px 30px;
  color: #fff;
  z-index: 2;
  transform: translateZ(40px);
}
.project-type{
  display: inline-block;
  padding: 5px 12px;
  border: 1px solid rgba(255,255,255,.35);
  border-radius: 999px;
  font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  font-weight: 600;
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(8px);
  margin-bottom: 14px;
  transition: background .3s ease, border-color .3s ease;
}
.project-card:hover .project-type{
  background: var(--gold);
  border-color: var(--gold);
  color: var(--green-deep);
}
.project-info h3{
  font-family: var(--serif);
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 500;
  letter-spacing: -.5px;
  margin: 0 0 8px;
  line-height: 1;
}
.project-location{
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px;
  color: rgba(255,255,255,.85);
  letter-spacing: .3px;
}
.project-location svg{ color: var(--gold); flex-shrink: 0; }

.work-cta{ text-align: center; margin-top: 56px; }
.btn-dark{
  background: var(--green-deep); color: #fff;
  border: 1.5px solid var(--green-deep);
}
.btn-dark:hover{ background: var(--accent); border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }

/* ============== PROCESS ============== */
.process{ background: var(--bg-alt); }
.steps{
  list-style:none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  counter-reset: step;
}
.steps li{
  background: var(--bg);
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  position: relative;
  border: 1px solid var(--line);
}
.step-num{
  font-family: var(--serif);
  font-size: 44px; font-weight: 500;
  color: var(--accent);
  display: block; line-height:1; margin-bottom: 12px;
}
.steps h3{ font-family: var(--serif); font-size: 22px; margin: 0 0 8px; }
.steps p{ margin:0; font-size: 15px; }

/* ============== REVIEWS ============== */
.reviews{ background: var(--bg); }
.reviews-rating{
  display: inline-flex; align-items: center; gap: 12px;
  font-size: 16px;
  margin-top: 8px;
}
.stars{ color: var(--gold); letter-spacing: 2px; }
.reviews-grid{
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
  max-width: 980px; margin: 0 auto;
}
.review-card{
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  transition: transform .3s ease, box-shadow .3s ease;
}
.review-card::before{
  content: "“";
  position: absolute; top: 8px; right: 24px;
  font-family: var(--serif);
  font-size: 80px; line-height: 1;
  color: var(--line);
}
.review-card:hover{ transform: translateY(-4px); box-shadow: var(--shadow); }
.review-card .stars{ display:block; margin-bottom: 14px; font-size: 16px; }
.review-card p{
  margin: 0 0 24px; font-size: 16px;
  color: var(--ink); line-height: 1.65;
  font-style: italic;
}
.review-card footer{
  display: flex; align-items: center; gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}
.reviewer-avatar{
  width: 42px; height: 42px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  color: #fff;
  display: grid; place-items: center;
  font-family: var(--serif); font-weight: 600; font-size: 18px;
}
.review-card footer strong{ display:block; font-size: 15px; }
.review-card footer span{ font-size: 12px; color: var(--muted); letter-spacing: 1px; }
.reviews-cta{ text-align:center; margin-top: 48px; }
.reviews-cta .btn-ghost{ color: var(--ink); border-color: var(--ink); }
.reviews-cta .btn-ghost:hover{ background: var(--ink); color: #fff; }

/* ============== CONTACT ============== */
.contact{ background: var(--bg-alt); padding-bottom: 0; }
.contact .two-col{ align-items: start; gap: 64px; }
.contact-info h2{ margin-top: 0; }
.contact-info > p{ font-size: 17px; max-width: 420px; }
.contact-list{
  list-style:none; padding:0; margin: 36px 0 0;
  display: grid; gap: 22px;
}
.contact-list li{ display: flex; gap: 16px; align-items: flex-start; }
.ci-icon{
  width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center;
  background: var(--bg);
  color: var(--accent-deep);
  border: 1px solid var(--line);
  flex-shrink: 0;
}
.contact-list strong{ display:block; font-size: 13px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }
.contact-list a{ color: var(--ink); font-weight: 600; font-size: 17px; transition: color .2s ease; }
.contact-list a:hover{ color: var(--accent); }
.contact-list span{ color: var(--ink); font-weight: 500; }

.contact-form{
  background: var(--bg);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.contact-form h3{
  font-family: var(--serif); font-size: 28px; margin: 0 0 24px;
}
.contact-form label{
  display: block; margin-bottom: 16px;
}
.contact-form label > span{
  display:block; font-size: 13px; font-weight: 600; color: var(--ink-soft);
  margin-bottom: 6px;
}
.contact-form input,
.contact-form select,
.contact-form textarea{
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-alt);
  color: var(--ink);
  font: inherit;
  transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus{
  outline: none;
  border-color: var(--accent);
  background: var(--bg);
  box-shadow: 0 0 0 4px rgba(139,94,42,.12);
}
.contact-form .form-row{ display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form .form-row label{ margin-bottom: 16px; }
.contact-form .btn{ margin-top: 8px; }
.form-note{
  margin: 14px 0 0;
  text-align: center; font-size: 13px; color: var(--muted);
}

.form-status{
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  text-align: center;
  display: none;
}
.form-status.success{
  display: block;
  background: rgba(72,128,80,.1);
  color: #2c5530;
  border: 1px solid rgba(72,128,80,.25);
}
.form-status.error{
  display: block;
  background: rgba(180,60,40,.08);
  color: #8a2a1c;
  border: 1px solid rgba(180,60,40,.2);
}

#submitBtn{ position: relative; }
#submitBtn .btn-spinner{
  position: absolute; right: 22px; top: 50%;
  width: 16px; height: 16px;
  margin-top: -8px;
  border: 2px solid rgba(31,42,36,.25);
  border-top-color: var(--green-deep);
  border-radius: 50%;
  opacity: 0;
  animation: spin .8s linear infinite;
}
#submitBtn.loading{ pointer-events: none; opacity: .8; }
#submitBtn.loading .btn-spinner{ opacity: 1; }
#submitBtn.loading .btn-text::after{ content: "…"; }
@keyframes spin{ to{ transform: rotate(360deg); } }

.map-wrap{
  margin-top: clamp(64px, 8vw, 100px);
  height: 420px;
  width: 100%;
  filter: grayscale(.2) contrast(1.05);
}

/* ============== FOOTER ============== */
.site-footer{
  background: var(--green-deep);
  color: rgba(255,255,255,.7);
  padding: 80px 0 0;
}
.brand-light .brand-text strong{ color: #fff; }
.brand-light .brand-text span{ color: rgba(255,255,255,.5); }
.footer-grid{
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-tag{ margin: 18px 0 0; font-size: 14px; max-width: 320px; }
.site-footer h4{
  color: #fff; font-size: 13px; letter-spacing: 2px; text-transform: uppercase;
  margin: 0 0 20px;
}
.site-footer ul{ list-style:none; padding:0; margin:0; }
.site-footer li{ margin-bottom: 10px; font-size: 14px; }
.site-footer a{ transition: color .2s ease; }
.site-footer a:hover{ color: var(--gold); }
.footer-bottom{
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
  max-width: var(--maxw); margin: 0 auto;
  padding: 28px;
  font-size: 13px;
  color: rgba(255,255,255,.5);
}

/* ============== REVEAL ANIMATIONS ============== */
.reveal{
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1s cubic-bezier(.2,.7,.2,1), transform 1s cubic-bezier(.2,.7,.2,1);
  will-change: opacity, transform;
}
.reveal.in{ opacity: 1; transform: none; }
.reveal.delay-1{ transition-delay: .1s; }
.reveal.delay-2{ transition-delay: .2s; }
.reveal.delay-3{ transition-delay: .3s; }
.reveal.delay-4{ transition-delay: .4s; }

/* Variantes de reveal */
.reveal-left{ transform: translateX(-60px); }
.reveal-right{ transform: translateX(60px); }
.reveal-scale{ transform: scale(.92); }
.reveal-blur{ filter: blur(10px); }
.reveal.in.reveal-left,
.reveal.in.reveal-right{ transform: none; }
.reveal.in.reveal-scale{ transform: scale(1); }
.reveal.in.reveal-blur{ filter: blur(0); }

/* Hero parallax */
.hero-bg{ transition: transform .1s linear; }
.hero-content{ transition: opacity .2s linear; }

/* Image parallax wrapper */
.parallax-img{ overflow: hidden; }
.parallax-img img{
  transition: transform .25s linear;
  will-change: transform;
}

/* Section header underline draw */
.section-head h2{
  position: relative;
  display: inline-block;
}
.section-head h2::after{
  content: "";
  position: absolute; left: 50%; bottom: -14px;
  width: 0; height: 2px;
  background: var(--accent);
  transform: translateX(-50%);
  transition: width 1.2s cubic-bezier(.2,.7,.2,1) .3s;
}
.section-head.in h2::after{ width: 60px; }

/* Service cards stagger */
.service-card{ transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease, opacity 1s cubic-bezier(.2,.7,.2,1), opacity 1s cubic-bezier(.2,.7,.2,1); }

/* Counter animation */
.hero-trust strong[data-count]{
  display: inline-block;
  font-variant-numeric: tabular-nums;
}

/* Marquee subtle scroll progress bar */
.scroll-progress{
  position: fixed; top: 0; left: 0;
  height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--gold));
  z-index: 200;
  transition: width .1s linear;
}

/* Desktop nav link entry animation (no animation on mobile) */
@media (min-width: 981px){
  .main-nav a{
    transform: translateY(-2px);
    opacity: 0;
    animation: navIn .5s cubic-bezier(.2,.7,.2,1) forwards;
  }
  .main-nav li:nth-child(1) a{ animation-delay: .05s; }
  .main-nav li:nth-child(2) a{ animation-delay: .1s; }
  .main-nav li:nth-child(3) a{ animation-delay: .15s; }
  .main-nav li:nth-child(4) a{ animation-delay: .2s; }
  .main-nav li:nth-child(5) a{ animation-delay: .25s; }
  .main-nav li:nth-child(6) a{ animation-delay: .3s; }
}
@keyframes navIn{
  to{ transform: none; opacity: 1; }
}

/* Gallery items hover float */
.gallery-item{ transition: transform .5s cubic-bezier(.2,.7,.2,1), box-shadow .5s ease; }
.gallery-item:hover{ box-shadow: var(--shadow-lg); }

/* Smooth section transitions */
.section{ position: relative; }

/* Service icon micro-animation */
.service-card .service-icon{ transition: transform .5s cubic-bezier(.2,.7,.2,1), background .4s ease, color .4s ease; }
.service-card:hover .service-icon{
  transform: rotate(-6deg) scale(1.08);
  background: linear-gradient(135deg, var(--accent), var(--gold));
  color: #fff;
}

/* Smooth focus rings */
.contact-form input,
.contact-form select,
.contact-form textarea{ transition: border-color .25s ease, background .25s ease, box-shadow .25s ease, transform .25s ease; }

/* Btn ripple-like glow */
.btn-primary{ position: relative; overflow: hidden; }
.btn-primary::before{
  content:""; position:absolute; inset: 0;
  background: radial-gradient(120px circle at var(--bx,50%) var(--by,50%), rgba(255,255,255,.35), transparent 60%);
  opacity: 0; transition: opacity .3s ease;
}
.btn-primary:hover::before{ opacity: 1; }

/* ============================================================
   RESPONSIVE — mobile-first refinements
   Breakpoints : 1100px (small desktop) · 980px (tablet) · 768px (large mobile) · 540px (mobile) · 380px (tiny)
   ============================================================ */

/* ---- ≤ 1100px : services grid 2 cols ---- */
@media (max-width: 1100px){
  .services-grid{ grid-template-columns: repeat(2, 1fr); }
  .footer-grid{ grid-template-columns: 1.4fr 1fr 1fr; gap: 36px; }
  .footer-grid > div:nth-child(4){ grid-column: 1 / -1; }
}

/* ---- ≤ 980px : tablet ---- */
@media (max-width: 980px){
  :root{ --header-h: 70px; --maxw: 100%; }

  /* MOBILE MENU — refait proprement */
  .main-nav{
    position: fixed;
    top: var(--header-h);
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-h));
    height: calc(100svh - var(--header-h));
    background: var(--bg);
    padding: 28px 22px 40px;
    margin: 0;
    transform: translateX(100%);
    transition: transform .4s cubic-bezier(.2,.7,.2,1), visibility 0s linear .4s;
    border-top: 1px solid var(--line);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    visibility: hidden;
    z-index: 99;
    box-shadow: -10px 0 40px rgba(31,42,36,.08);
  }
  .main-nav.open{
    transform: translateX(0);
    visibility: visible;
    transition: transform .4s cubic-bezier(.2,.7,.2,1), visibility 0s linear 0s;
  }
  .main-nav ul{
    flex-direction: column;
    gap: 2px;
    list-style: none;
    padding: 0; margin: 0;
    width: 100%;
  }
  .main-nav li{ width: 100%; }
  .main-nav a{
    display: block;
    width: 100%;
    padding: 18px 18px;
    font-size: 18px;
    font-weight: 500;
    border-radius: 12px;
    border-bottom: 1px solid var(--line);
    color: var(--ink);
    transform: none !important;
    opacity: 1 !important;
    animation: none !important;
  }
  .main-nav li:last-child a{ border-bottom: 0; }
  .main-nav a:hover,
  .main-nav a:active{ background: var(--bg-alt); }
  .main-nav a.active{ background: var(--bg-alt); color: var(--accent); }
  .main-nav a.active::after{ display: none; }

  .cta-call span{ display: none; }
  .cta-call{ padding: 11px; }

  /* BURGER */
  .burger{
    display: block;
    margin-left: 8px;
    position: relative;
    z-index: 101;
  }

  /* CTA popover : recentré sur mobile (en-dessous du header) */
  .cta-popover{
    right: 0; left: auto;
    min-width: 220px;
  }

  /* HERO */
  .hero-content{ padding: 130px 24px 90px; }
  .hero h1{ letter-spacing: -2px; }
  .hero-trust{ gap: 36px; padding-top: 24px; }

  /* SECTIONS */
  .two-col{ grid-template-columns: 1fr; gap: 48px; }
  .about-img img{ aspect-ratio: 4/3; }
  .services-grid{ grid-template-columns: 1fr; gap: 18px; }
  .steps{ grid-template-columns: 1fr 1fr; }
  .reviews-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .footer-bottom{ justify-content: center; text-align: center; }
  .contact-form{ padding: 28px; }
  .contact-form .form-row{ grid-template-columns: 1fr; }
  .about-list{ grid-template-columns: 1fr; }

  /* PROJECTS */
  .projects-grid{
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 280px;
    gap: 16px;
  }
  .project-card,
  .project-card.project-large{ grid-column: span 1; }
  .project-card:nth-child(5){ grid-column: span 2; }
  .project-info{ padding: 22px 24px; }
  .project-info h3{ font-size: 28px; }

  /* MAP */
  .map-wrap{ height: 320px; }
}

/* ---- ≤ 768px : large mobile ---- */
@media (max-width: 768px){
  .section{ padding: 80px 0; }
  .section-head{ margin-bottom: 48px; }

  .hero-content{ padding: 110px 22px 80px; }
  .hero h1{ letter-spacing: -1.5px; }
  .hero-cta{ gap: 10px; margin-bottom: 56px; flex-direction: column; align-items: stretch; }
  .hero-cta .btn{ width: 100%; }

  .reviews-rating{ flex-direction: column; gap: 6px; }

  .footer-grid{ padding-bottom: 40px; gap: 32px; }
}

/* ---- ≤ 540px : mobile ---- */
@media (max-width: 540px){
  :root{ --radius-lg: 18px; }

  .container,
  .nav-wrap{ padding: 0 18px; }

  /* HERO */
  .hero-content{ padding: 100px 20px 80px; }
  .hero h1{
    font-size: clamp(40px, 12vw, 60px);
    line-height: .82;
    letter-spacing: -1px;
    margin-bottom: 22px;
  }
  .hero h1 em{ letter-spacing: -1px; }
  .eyebrow{ font-size: 11px; letter-spacing: 2.5px; padding: 6px 14px; margin-bottom: 22px; }
  .hero .lede{ font-size: 16px; margin-bottom: 32px; }
  .hero-trust{
    gap: 20px;
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-trust > div{
    flex-direction: row;
    align-items: baseline;
    gap: 14px;
    width: 100%;
  }
  .hero-trust strong{ font-size: 28px; }
  .hero-trust span{ font-size: 11px; letter-spacing: 1.5px; }

  /* PROJECTS — pile en mono colonne */
  .projects-grid{ grid-template-columns: 1fr; grid-auto-rows: 240px; gap: 14px; }
  .project-card,
  .project-card.project-large,
  .project-card:nth-child(5){ grid-column: span 1; }
  .project-info{ padding: 20px 22px; }
  .project-info h3{ font-size: 26px; }
  .project-type{ font-size: 10px; padding: 4px 10px; margin-bottom: 10px; }

  /* STEPS */
  .steps{ grid-template-columns: 1fr; gap: 14px; }
  .steps li{ padding: 28px 24px; }
  .step-num{ font-size: 36px; }

  /* SERVICES */
  .service-card{ padding: 28px 24px; }
  .service-card h3{ font-size: 22px; }

  /* CONTACT */
  .contact-form{ padding: 24px 20px; }
  .contact-form h3{ font-size: 24px; }
  .contact-list a{ font-size: 16px; }
  .map-wrap{ height: 280px; }

  /* REVIEWS */
  .review-card{ padding: 26px 22px; }
  .review-card p{ font-size: 15px; }

  /* FOOTER */
  .footer-grid{ grid-template-columns: 1fr; gap: 28px; padding-bottom: 36px; }
  .footer-bottom{ flex-direction: column; gap: 8px; padding: 24px 18px; }

  /* HEADER tightening */
  .nav-wrap{ gap: 10px; }
  .brand-text strong{ font-size: 17px; }
  .brand-text span{ font-size: 10px; letter-spacing: 2px; }
  .brand-mark{ width: 38px; height: 38px; font-size: 19px; }

  /* CTA popover : centré, full-width sur mobile */
  .cta-popover{
    position: fixed;
    top: var(--header-h);
    left: 18px;
    right: 18px;
    min-width: 0;
    margin-top: 8px;
  }
  .cta-popover::before{ right: 28px; }
}

/* ---- ≤ 380px : tiny ---- */
@media (max-width: 380px){
  .hero h1{ font-size: clamp(34px, 12vw, 48px); }
  .hero-trust strong{ font-size: 24px; }
  .section h2{ font-size: 28px; line-height: 1.15; }
  .section-head h2::after{ bottom: -10px; }
  .container{ padding: 0 14px; }
  .nav-wrap{ padding: 0 14px; }
  .brand-text span{ display: none; }
}

@media (prefers-reduced-motion: reduce){
  *{ animation: none !important; transition: none !important; }
  html{ scroll-behavior: auto; }
}