/* Bielle & Cie : béton clair, asphalte, jaune sécurité */
:root {
  --concrete: #ECECE7;
  --white: #FAFAF7;
  --asphalt: #1B1E21;
  --asphalt-2: #262A2E;
  --steel: #59616A;
  --yellow: #F2C01A;
  --line: rgb(27 30 33 / .14);
  --display: "Big Shoulders Display", Impact, sans-serif;
  --sans: "IBM Plex Sans", system-ui, sans-serif;
  --ease: cubic-bezier(.16, 1, .3, 1);
}
body { background: var(--concrete); color: var(--asphalt); font-family: var(--sans); font-size: 17px; line-height: 1.6; }
::selection { background: var(--yellow); color: var(--asphalt); }
mark { background: none; color: inherit; box-shadow: inset 0 -.32em 0 var(--yellow); }
.h2 { font-family: var(--display); font-weight: 800; font-size: clamp(2.6rem, 1.4rem + 3.8vw, 4.8rem); line-height: .95; letter-spacing: .005em; text-transform: uppercase; }

.btn { display: inline-flex; align-items: center; gap: 12px; padding: 17px 26px; background: var(--yellow); color: var(--asphalt); font-weight: 600; border-radius: 2px; transition: transform .4s var(--ease), background-color .3s, color .3s; }
.btn:hover { transform: translateY(-2px); background: var(--asphalt); color: var(--yellow); }
.btn i { transition: transform .4s var(--ease); }
.btn:hover i { transform: translateX(4px); }
.btn--dark { background: var(--asphalt); color: var(--white); }
.btn--dark:hover { background: var(--yellow); color: var(--asphalt); }
.btn--sm { padding: 11px 18px; }
.under { font-weight: 600; border-bottom: 2px solid var(--asphalt); padding-bottom: 2px; }
.tag { display: inline-block; padding: 6px 10px; background: var(--asphalt); color: var(--yellow); font-size: 12.5px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; }

/* Bande et en-tête */
.strip { background: var(--yellow); text-align: center; font-size: 13.5px; font-weight: 600; padding: 8px 16px; }
.top { position: sticky; top: 0; z-index: 50; background: rgb(236 236 231 / .92); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); border-bottom: 1px solid transparent; transition: border-color .3s; }
.top.scrolled { border-color: var(--line); }
.top__in { height: 76px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-family: var(--display); font-weight: 800; font-size: 1.7rem; text-transform: uppercase; letter-spacing: .02em; }
.brand b { width: 38px; height: 38px; display: grid; place-items: center; background: var(--yellow); font-weight: 900; font-size: 1.5rem; }
.nav { display: flex; align-items: center; gap: 34px; font-weight: 600; font-size: 15px; }
.nav a:not(.btn):hover { box-shadow: inset 0 -3px 0 var(--yellow); }
.burger { display: none; width: 44px; height: 44px; background: var(--asphalt); position: relative; }
.burger span { position: absolute; left: 12px; right: 12px; height: 2px; background: var(--yellow); transition: transform .4s var(--ease), top .4s var(--ease); }
.burger span:first-child { top: 18px; } .burger span:last-child { top: 25px; }
.menu-open .burger span:first-child { top: 21px; transform: rotate(45deg); }
.menu-open .burger span:last-child { top: 21px; transform: rotate(-45deg); }

/* Hero */
.hero { padding: clamp(48px, 7vw, 96px) 0 clamp(80px, 10vw, 130px); }
.hero__grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero__title { margin: 22px 0 28px; font-family: var(--display); font-weight: 900; font-size: clamp(3.4rem, 1.4rem + 6vw, 7rem); line-height: .9; text-transform: uppercase; }
.checks { display: grid; gap: 12px; }
.checks li { display: flex; align-items: center; gap: 12px; font-weight: 500; }
.checks i { width: 28px; height: 28px; display: grid; place-items: center; background: var(--asphalt); color: var(--yellow); font-size: 15px; flex: none; }
.hero__ctas { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; margin-top: 36px; }
.hero__img { position: relative; }
.hero__img::before { content: ""; position: absolute; inset: 24px -18px -18px 24px; background: var(--yellow); }
.hero__img > div { position: relative; }
.hero__img img { width: 100%; aspect-ratio: 5 / 4; object-fit: cover; }
.slot { position: absolute; left: -28px; bottom: 30px; display: flex; align-items: center; gap: 14px; padding: 16px 20px; background: var(--white); box-shadow: 0 24px 48px -24px rgb(27 30 33 / .5); }
.slot small { display: block; font-size: 12.5px; color: var(--steel); }
.slot b { font-family: var(--display); font-weight: 800; font-size: 1.6rem; text-transform: uppercase; line-height: 1.1; }
.slot__dot { width: 12px; height: 12px; border-radius: 50%; background: #2DBE6C; box-shadow: 0 0 0 5px rgb(45 190 108 / .2); animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 9px rgb(45 190 108 / 0); } }

/* Services */
.services { background: var(--white); padding: clamp(80px, 10vw, 140px) 0; }
.services__head { display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items: end; margin-bottom: 56px; }
.services__head p { color: var(--steel); max-width: 36ch; }
.grid6 { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 2px solid var(--asphalt); border-left: 1px solid var(--line); }
.svc { position: relative; padding: 34px 30px 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); isolation: isolate; transition: color .35s; }
.svc::before { content: ""; position: absolute; inset: 0; z-index: -1; background: var(--asphalt); clip-path: inset(100% 0 0 0); transition: clip-path .5s var(--ease); }
.svc:hover { color: var(--white); }
.svc:hover::before { clip-path: inset(0 0 0 0); }
.svc i { font-size: 34px; color: var(--asphalt); background: var(--yellow); width: 58px; height: 58px; display: grid; place-items: center; }
.svc h3 { margin: 22px 0 8px; font-family: var(--display); font-weight: 800; font-size: 1.9rem; text-transform: uppercase; line-height: 1; }
.svc p { color: var(--steel); font-size: 15.5px; transition: color .35s; }
.svc:hover p { color: rgb(250 250 247 / .75); }
.svc b { display: inline-block; margin-top: 18px; font-weight: 600; font-size: 15px; padding: 4px 10px; border: 1.5px solid currentColor; }

/* Chiffres */
.numbers { background: var(--asphalt); color: var(--white); padding: 64px 0; }
.numbers__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.numbers b { display: block; font-family: var(--display); font-weight: 900; font-size: clamp(3rem, 2rem + 3vw, 5rem); line-height: 1; color: var(--yellow); }
.numbers span { color: rgb(250 250 247 / .7); font-size: 15px; }

/* Atelier */
.atelier { padding: clamp(80px, 10vw, 140px) 0; }
.atelier__grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(32px, 6vw, 96px); align-items: start; }
.atelier__owner img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; }
.atelier__txt > p { margin-top: 24px; color: var(--steel); max-width: 46ch; font-size: 1.05rem; }
.atelier__pics { display: grid; grid-template-columns: 1.3fr 1fr; gap: 16px; margin-top: 40px; }
.atelier__pics img { width: 100%; aspect-ratio: 1; object-fit: cover; }

/* Rendez-vous */
.rdv { background: var(--yellow); padding: clamp(70px, 9vw, 120px) 0; }
.rdv mark { box-shadow: inset 0 -.32em 0 var(--white); }
.rdv__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.rdv__grid > div p { margin-top: 18px; font-size: 1.1rem; max-width: 30ch; }
.rdv__form { display: grid; gap: 16px; padding: 32px; background: var(--white); box-shadow: 12px 12px 0 var(--asphalt); }
.rdv__form label { display: grid; gap: 6px; font-size: 13.5px; font-weight: 600; }
.rdv__form input, .rdv__form select { padding: 14px; border: 1.5px solid var(--line); border-radius: 2px; background: var(--concrete); font: 500 16px var(--sans); color: var(--asphalt); }
.rdv__form input:focus, .rdv__form select:focus { outline: none; border-color: var(--asphalt); }
.rdv__form .btn { justify-self: start; background: var(--asphalt); color: var(--yellow); }
.out { padding: 12px 14px; background: var(--concrete); font-weight: 500; }

/* Façade et pied */
.front img { width: 100%; height: clamp(320px, 45vw, 620px); object-fit: cover; }
.foot { background: var(--asphalt); color: var(--white); padding: 64px 0 96px; }
.foot__grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.foot__brand { display: flex; align-items: center; gap: 14px; font-family: var(--display); font-weight: 900; font-size: clamp(2.4rem, 5vw, 4rem); text-transform: uppercase; line-height: 1; }
.foot__brand b { width: 1.1em; height: 1.1em; display: grid; place-items: center; background: var(--yellow); color: var(--asphalt); font-size: .8em; }
.foot h3 { font-size: 12.5px; letter-spacing: .16em; text-transform: uppercase; color: var(--yellow); margin-bottom: 10px; }
.foot p { color: rgb(250 250 247 / .75); }
.foot__meta { grid-column: 1 / -1; font-size: 13.5px; margin-top: 24px; }

@media (max-width: 960px) {
  .nav { position: fixed; inset: 0; z-index: -1; flex-direction: column; justify-content: center; gap: 22px; background: var(--concrete); font-family: var(--display); font-size: 2.6rem; font-weight: 800; text-transform: uppercase; opacity: 0; visibility: hidden; transition: opacity .4s, visibility .4s; }
  .menu-open .nav { opacity: 1; visibility: visible; }
  .nav .btn { font-family: var(--sans); font-size: 1rem; text-transform: none; }
  .burger { display: block; }
  .hero__grid, .services__head, .atelier__grid, .rdv__grid, .foot__grid { grid-template-columns: 1fr; }
  .grid6 { grid-template-columns: 1fr 1fr; }
  .numbers__grid { grid-template-columns: 1fr 1fr; }
  .slot { left: 10px; bottom: -26px; }
}
@media (max-width: 560px) { .grid6 { grid-template-columns: 1fr; } }