/* ============================================================
   CASTERA Rénovation & Construction — Feuille de styles
   Aucun style inline : tout passe par ce fichier.
   ============================================================ */

:root{
    --dark:#252627;
    --dark2:#2e2f30;
    --brown:#423e37;
    --cream:#f5f3ef;
    --white:#fff;
    --accent:#c19662;
    --accent-d:#a87f4e;
    --grey:#77726b;
    --line:#e7e3dc;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Montserrat',sans-serif;color:var(--dark);background:var(--white);line-height:1.7;font-size:15.5px}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.container{max-width:1180px;margin:0 auto;padding:0 26px}
h1,h2,h3,h4{line-height:1.2}
.kicker{display:block;font-size:12px;font-weight:600;letter-spacing:.45em;text-transform:uppercase;color:var(--accent);margin-bottom:18px}
.section-title{font-size:clamp(26px,3.6vw,40px);font-weight:600;text-transform:uppercase;letter-spacing:.08em}
.center{text-align:center}
.link-accent{color:var(--accent)}
.link-accent:hover{color:var(--accent-d)}

.btn{display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.3em;text-transform:uppercase;padding:17px 40px;transition:all .3s ease;cursor:pointer;border:none}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-d)}
.btn-line{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.55)}
.btn-line:hover{background:#fff;color:var(--dark);border-color:#fff}
.btn-dark{background:var(--dark);color:#fff}
.btn-dark:hover{background:var(--accent)}

/* ---------- Header ---------- */
header{position:fixed;top:0;left:0;right:0;z-index:320;transition:background .35s,box-shadow .35s;padding:0}
header .nav{pointer-events:none}
header .nav .logo,header .nav .burger{pointer-events:auto}
header .nav{display:flex;align-items:center;justify-content:space-between;height:124px;padding:0 40px}
header.scrolled,.page-solid-header header{background:rgba(37,38,39,.96);box-shadow:0 8px 30px rgba(0,0,0,.25)}
header.scrolled .nav{height:88px}
.logo{display:flex;align-items:center;gap:14px;color:#fff}
.logo-mark{flex:none;width:120px;height:120px;object-fit:contain}
.logo-mark--sm{width:84px;height:84px}
header.scrolled .logo-mark{width:80px;height:80px}
.logo-text{font-weight:700;font-size:21px;letter-spacing:.08em;text-transform:uppercase;line-height:1}
.logo-text small{display:block;font-weight:400;font-size:9.5px;letter-spacing:.5em;margin-top:6px;color:#d8d3cb}
.burger{width:52px;height:52px;background:none;border:none;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:0}
.burger span{display:block;width:28px;height:2px;background:#fff;margin:3px 0;border-radius:2px;transition:transform .35s cubic-bezier(.7,0,.2,1),opacity .2s ease,background .3s,width .3s}
.burger:hover span{background:var(--accent)}
.burger:hover span:nth-child(2){width:20px}
.burger.is-open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}
.burger.is-open:hover span:nth-child(2){width:28px}

/* ---------- Menu latéral ---------- */
.backdrop{position:fixed;inset:0;background:rgba(0,0,0,.55);opacity:0;pointer-events:none;transition:opacity .35s;z-index:300}
.backdrop.show{opacity:1;pointer-events:auto}
.panel{position:fixed;top:0;right:0;bottom:0;width:min(380px,88vw);background:var(--dark);color:#fff;z-index:310;transform:translateX(102%);transition:transform .45s cubic-bezier(.7,0,.2,1);display:flex;flex-direction:column;padding:44px 46px}
.panel.open{transform:none}
.panel .close{display:none}
.panel nav{margin-top:104px;flex:1}
.panel nav a{display:block;font-size:15px;font-weight:500;letter-spacing:.28em;text-transform:uppercase;padding:17px 0;border-bottom:1px solid rgba(255,255,255,.09);color:#e8e4de;transition:color .25s,padding-left .25s}
.panel nav a:hover{color:var(--accent);padding-left:10px}
.panel .p-contact{font-size:13px;color:#b7b1a8;letter-spacing:.06em;line-height:2.1}
.panel .p-contact a:hover{color:var(--accent)}
.panel .p-contact b{color:#fff;font-weight:600;letter-spacing:.3em;text-transform:uppercase;font-size:11.5px;display:block;margin-bottom:8px}

/* ---------- Hero slider ---------- */
.hero{position:relative;height:100vh;min-height:620px;overflow:hidden;background:var(--dark)}
.slide{position:absolute;inset:0;opacity:0;transition:opacity 1.2s ease;background-size:cover;background-position:center}
.slide::after{content:"";position:absolute;inset:0;background:rgba(30,29,28,.62)}
.slide.active{opacity:1}
.slide--1{background-image:url('../img/hero-1-opt.jpg')}
.slide--2{background-image:url('../img/hero-2-opt.jpg')}
.slide--3{background-image:url('../img/hero-3-opt.jpg')}
.hero-content{position:absolute;inset:0;z-index:5;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:#fff;padding:0 20px}
.hero-title{font-size:clamp(34px,6vw,68px);font-weight:600;letter-spacing:.04em;text-transform:uppercase}
.hero-title .amp{font-weight:300;color:var(--accent)}
.hero-sub{font-size:clamp(11px,1.6vw,16px);font-weight:400;letter-spacing:.62em;text-transform:uppercase;margin-top:18px;color:#e4e0da}
.hero-btns{margin-top:46px;display:flex;gap:18px;flex-wrap:wrap;justify-content:center}
.arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:6;background:none;border:none;color:rgba(255,255,255,.75);cursor:pointer;padding:16px;transition:color .25s}
.arrow:hover{color:#fff}
.arrow.prev{left:14px}.arrow.next{right:14px}
.dots{position:absolute;bottom:34px;left:0;right:0;z-index:6;display:flex;gap:12px;justify-content:center}
.dot{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.35);border:none;cursor:pointer;transition:.3s}
.dot.active{background:#fff;transform:scale(1.25)}
.scroll-hint{position:absolute;bottom:30px;right:40px;z-index:6;color:#fff;font-size:10.5px;letter-spacing:.4em;text-transform:uppercase;writing-mode:vertical-rl;opacity:.6}
@media(max-width:700px){.scroll-hint{display:none}}

/* ---------- Intro / entreprise ---------- */
.intro{padding:120px 0}
.intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:80px;align-items:center}
.intro p{color:var(--grey);margin-bottom:16px}
.intro-lead{margin-top:26px}
.intro .sign{font-size:13px;letter-spacing:.3em;text-transform:uppercase;font-weight:600;margin-top:26px;color:var(--dark)}
.intro .sign span{color:var(--accent)}
.intro-img{position:relative;align-self:center;aspect-ratio:4/4.6}
.intro-main{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.intro-img .frame{position:absolute;top:26px;left:26px;right:-26px;bottom:-26px;border:1px solid var(--accent);z-index:-1}
.intro-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin-top:40px}
.intro-stats div{background:#fff;padding:26px 20px;text-align:center}
.intro-stats b{display:block;font-size:36px;font-weight:600;color:var(--dark);line-height:1.1}
.intro-stats span{font-size:10.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--grey)}
@media(max-width:920px){.intro-grid{grid-template-columns:1fr;gap:70px}}

/* ---------- Services ---------- */
.services{padding:120px 0;background:var(--cream)}
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:34px;margin-top:70px}
.card{background:#fff;display:flex;flex-direction:column;transition:transform .35s,box-shadow .35s}
.card:hover{transform:translateY(-8px);box-shadow:0 26px 60px rgba(37,38,39,.13)}
.card-img{width:100%;height:250px;object-fit:cover;filter:saturate(.85)}
.card-body{padding:34px 32px 38px;display:flex;flex-direction:column;flex:1}
.card h3{font-size:16px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;margin-bottom:16px}
.card h3::after{content:"";display:block;width:38px;height:1px;background:var(--accent);margin-top:14px}
.card p{color:var(--grey);font-size:14px;margin-bottom:18px}
.card ul{list-style:none;margin-bottom:26px}
.card li{font-size:13.5px;color:var(--dark2);padding:8px 0 8px 22px;position:relative;border-bottom:1px solid var(--line)}
.card li::before{content:"—";position:absolute;left:0;color:var(--accent)}
.card .more{margin-top:auto;font-size:11.5px;font-weight:600;letter-spacing:.3em;text-transform:uppercase;color:var(--dark);display:inline-flex;align-items:center;gap:10px;transition:color .25s}
.card .more:hover{color:var(--accent)}
@media(max-width:920px){.services-grid{grid-template-columns:1fr}}

/* ---------- Pourquoi ---------- */
.why{padding:120px 0;background:var(--dark);color:#fff;position:relative;overflow:hidden}
.why .section-title{color:#fff}
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:56px 46px;margin-top:74px}
.why-item{text-align:center}
.why-item .num{font-size:13px;letter-spacing:.3em;color:var(--accent);font-weight:600;display:block;margin-bottom:14px}
.why-item h4{font-size:14.5px;font-weight:600;letter-spacing:.24em;text-transform:uppercase;margin-bottom:12px}
.why-item p{font-size:13.5px;color:#a8a29a}
@media(max-width:920px){.why-grid{grid-template-columns:1fr 1fr}}
@media(max-width:580px){.why-grid{grid-template-columns:1fr}}

/* ---------- Réalisations ---------- */
.works{padding:120px 0}
.works-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:70px}
.work{position:relative;overflow:hidden;aspect-ratio:3/4;background:var(--dark2);cursor:pointer;margin:0}
.work .bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .9s ease,transform .6s ease;filter:saturate(.85)}
.work .bg.active{opacity:1}
.work:hover .bg.active{transform:scale(1.08)}
.work-dots{position:absolute;top:14px;left:0;right:0;z-index:3;display:flex;gap:7px;justify-content:center;pointer-events:none}
.work-dots .wd{width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.5);transition:.3s}
.work-dots .wd.active{background:#fff;transform:scale(1.25)}
.work .ov{position:absolute;inset:0;z-index:2;background:linear-gradient(to top,rgba(30,29,28,.9),rgba(30,29,28,.1) 55%,transparent);display:flex;flex-direction:column;justify-content:flex-end;padding:26px;opacity:.95}
.work .tag{font-size:10px;letter-spacing:.32em;text-transform:uppercase;color:var(--accent);font-weight:600;margin-bottom:10px}
.work h4{color:#fff;font-size:15px;font-weight:500;letter-spacing:.06em}
@media(max-width:920px){.works-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.works-grid{grid-template-columns:1fr}}
.works-foot{text-align:center;margin-top:56px}

/* ---------- Témoignages ---------- */
.testi{padding:120px 0;background:var(--cream)}
.testi-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px;margin-top:70px}
.t-card{background:#fff;padding:44px 40px;position:relative}
.t-card::before{content:"\201C";position:absolute;top:14px;right:32px;font-size:100px;color:var(--accent);opacity:.18;line-height:1;font-weight:700}
.t-card p{font-size:14.5px;color:var(--grey);margin-bottom:28px;font-weight:400}
.stars{color:var(--accent);letter-spacing:5px;margin-bottom:18px;font-size:13px}
.t-who b{display:block;font-size:13px;letter-spacing:.2em;text-transform:uppercase}
.t-who span{font-size:12.5px;color:var(--grey)}
@media(max-width:820px){.testi-grid{grid-template-columns:1fr}}
/* Carrousel de témoignages : les slides se superposent dans une même cellule
   de grille (hauteur = slide la plus haute), seul .active est visible. */
.testi-carousel{margin-top:70px;position:relative}
.testi-track{display:grid}
.testi-slide{grid-area:1/1;display:grid;grid-template-columns:1fr 1fr;gap:34px;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .6s ease}
.testi-slide.active{opacity:1;visibility:visible;pointer-events:auto}
@media(max-width:820px){.testi-slide{grid-template-columns:1fr}}
.testi-controls{display:flex;align-items:center;justify-content:center;gap:22px;margin-top:40px}
.testi-arrow{width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line);cursor:pointer;color:var(--dark);display:grid;place-items:center;transition:.25s}
.testi-arrow:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.testi-dots{display:flex;gap:9px}
.testi-dots .td{width:9px;height:9px;border-radius:50%;background:#d8d3ca;border:none;cursor:pointer;transition:.3s;padding:0}
.testi-dots .td.active{background:var(--accent);transform:scale(1.25)}

/* ---------- Devis ---------- */
.quote{padding:120px 0;background:linear-gradient(rgba(30,29,28,.88),rgba(30,29,28,.88)),url('../img/cta-maconnerie.jpg') center/cover,var(--dark);color:#fff}
.quote-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:80px;align-items:center}
.quote .section-title{color:#fff}
.quote .lead{color:#cfc9c1;margin:24px 0 32px;font-size:15px}
.q-points{list-style:none}
.q-points li{padding:11px 0 11px 34px;position:relative;font-size:14px;letter-spacing:.02em}
.q-points li::before{content:"";position:absolute;left:0;top:19px;width:16px;height:1px;background:var(--accent)}
form{background:#fff;padding:46px 42px;color:var(--dark)}
form h3{font-size:16px;font-weight:600;letter-spacing:.26em;text-transform:uppercase;margin-bottom:8px}
form .sub{font-size:13px;color:var(--grey);margin-bottom:28px}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.f-group{margin-bottom:16px}
label{display:block;font-size:10.5px;font-weight:600;letter-spacing:.24em;text-transform:uppercase;margin-bottom:8px;color:var(--grey)}
input,select,textarea{width:100%;padding:13px 14px;border:1px solid var(--line);font-family:'Montserrat',sans-serif;font-size:14px;background:#faf9f6;transition:border-color .2s}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent)}
textarea{resize:vertical;min-height:96px}
form .btn{width:100%;margin-top:8px}
.f-note{font-size:11px;color:var(--grey);text-align:center;margin-top:14px;letter-spacing:.04em}
.form-alert{padding:13px 16px;font-size:13px;margin-bottom:20px;border-left:3px solid}
.form-alert--ok{background:#eef6ee;color:#2f6b34;border-color:#3f8c46}
.form-alert--ko{background:#fbeeee;color:#9a3b3b;border-color:#c0504e}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
@media(max-width:920px){.quote-grid{grid-template-columns:1fr;gap:60px}}
@media(max-width:520px){.f-row{grid-template-columns:1fr}form{padding:36px 26px}}

/* ---------- Zone ---------- */
.zone-sec{padding:110px 0;text-align:center}
.zone-sec p{max-width:720px;margin:22px auto 0;color:var(--grey);font-size:14.5px}
.cities{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:38px}
.city{font-size:11px;font-weight:500;letter-spacing:.26em;text-transform:uppercase;padding:11px 22px;border:1px solid var(--line);color:var(--grey);transition:.25s}
.city:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- Mentions légales ---------- */
.legal{padding:150px 0 100px}
.legal .section-title{margin-bottom:40px}
.legal h2{font-size:16px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;margin:34px 0 12px;color:var(--dark)}
.legal p{color:var(--grey);margin-bottom:12px;max-width:820px}
.legal a{color:var(--accent)}
.legal .btn{color:#fff}
.legal .btn-dark:hover{color:#fff}
.legal-back{margin-top:40px}

/* ---------- Footer ---------- */
footer{background:var(--dark);color:#a8a29a;padding:80px 0 0}
.f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:50px;padding-bottom:60px}
footer h5{font-size:12px;letter-spacing:.34em;text-transform:uppercase;color:#fff;margin-bottom:22px;font-weight:600}
footer ul{list-style:none}
footer li{margin-bottom:12px;font-size:13.5px}
footer a:hover{color:var(--accent)}
.f-desc{font-size:13.5px;margin-top:20px;max-width:300px}
.f-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;font-size:12px;letter-spacing:.04em}
.f-bottom a{color:var(--accent)}
.f-bottom a.f-admin{color:#6f6a63}
.f-bottom a.f-admin:hover{color:var(--accent)}
.f-bottom .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
@media(max-width:920px){.f-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.f-grid{grid-template-columns:1fr}}

/* ---------- Visionneuse (lightbox) ---------- */
.lightbox{position:fixed;inset:0;z-index:400;display:flex;align-items:center;justify-content:center;padding:48px;background:rgba(20,19,18,.62);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);opacity:0;pointer-events:none;transition:opacity .35s ease}
.lightbox.open{opacity:1;pointer-events:auto}
.lb-figure{margin:0;display:flex;flex-direction:column;align-items:center;gap:18px;max-width:92vw}
.lb-img{max-width:92vw;max-height:82vh;width:auto;height:auto;object-fit:contain;box-shadow:0 40px 90px rgba(0,0,0,.55);transform:scale(.9);opacity:0;transition:transform .45s cubic-bezier(.2,.7,.2,1),opacity .35s ease}
.lightbox.open .lb-img{transform:scale(1);opacity:1}
.lb-caption{color:#fff;font-size:12.5px;font-weight:500;letter-spacing:.22em;text-transform:uppercase;text-align:center}
.lb-caption .lb-tag{color:var(--accent);display:block;margin-bottom:6px;font-size:11px;letter-spacing:.32em}
.lb-close{position:absolute;top:22px;right:30px;background:none;border:none;color:#fff;font-size:38px;line-height:1;font-weight:300;cursor:pointer;transition:color .25s}
.lb-close:hover{color:var(--accent)}
.lb-nav{position:absolute;top:50%;transform:translateY(-50%);background:none;border:none;color:rgba(255,255,255,.8);cursor:pointer;padding:14px;transition:color .25s}
.lb-nav:hover{color:#fff}
.lb-prev{left:18px}
.lb-next{right:18px}
body.no-scroll{overflow:hidden}
@media(max-width:600px){.lb-nav{padding:8px}.lb-prev{left:2px}.lb-next{right:2px}.lightbox{padding:20px}}

/* ---------- Remontée + reveal ---------- */
.to-top{position:fixed;bottom:26px;right:26px;width:46px;height:46px;border-radius:50%;background:#fff;border:1px solid var(--line);cursor:pointer;display:grid;place-items:center;opacity:0;pointer-events:none;transition:.3s;z-index:150;box-shadow:0 8px 24px rgba(0,0,0,.14)}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{background:var(--accent);color:#fff}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}