/* ==========================================================================
   THCC — Travaux Hauteur Cordes Cévennes
   Design system : ancrage industriel / sécurité BTP
   ========================================================================== */

:root{
  /* Couleurs */
  --navy:        #14283D;
  --navy-deep:   #0D1C2B;
  --navy-light:  #1F3B57;
  --steel:       #4A5A68;
  --steel-light: #7C8B98;
  --bg:          #F3F5F7;
  --bg-card:     #FFFFFF;
  --white:       #FFFFFF;
  --accent:      #0D9488;
  --accent-dark: #0E7490;
  --safety:      #6EE7B7;
  --line:        #DCE2E7;

  /* Typo */
  --font-display: 'Oswald', 'Arial Narrow', sans-serif;
  --font-body:    'Work Sans', 'Segoe UI', sans-serif;

  /* Rythme */
  --gap: clamp(1rem, 2vw, 2rem);
  --radius: 6px;
  --shadow-sm: 0 2px 8px rgba(13,28,43,0.08);
  --shadow-md: 0 8px 24px rgba(13,28,43,0.14);
  --header-h: 76px;
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *,*::before,*::after{ animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body{
  margin:0;
  font-family: var(--font-body);
  color: var(--navy);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
ul{ list-style: none; margin:0; padding:0; }
h1,h2,h3,h4{ font-family: var(--font-display); font-weight:600; letter-spacing:.02em; margin:0 0 .5em; text-transform: uppercase; color: var(--navy); }
p{ margin:0 0 1em; color: var(--steel); }

.container{
  width:100%;
  max-width: 1180px;
  margin-inline:auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.5em;
  font-family: var(--font-display);
  font-size:.8rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color: var(--accent-dark);
  margin-bottom: .75rem;
}
.eyebrow::before{
  content:"";
  width: 22px; height:2px;
  background: var(--accent);
  display:inline-block;
}

.section{ padding: clamp(3.5rem, 7vw, 6rem) 0; }
.section-head{ max-width: 640px; margin-bottom: clamp(2rem,4vw,3rem); }
.section-head p{ font-size: 1.05rem; }
.section--alt{ background: var(--white); }
.section--dark{ background: var(--navy); color: var(--white); }
.section--dark h2, .section--dark h3{ color: var(--white); }
.section--dark p{ color: #C6D2DD; }

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline: 3px solid var(--safety);
  outline-offset: 2px;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.6em;
  font-family: var(--font-display);
  font-size: .95rem;
  letter-spacing:.05em;
  text-transform: uppercase;
  padding: .95em 1.7em;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor:pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
  white-space: nowrap;
}
.btn--accent{ background: var(--accent); color: var(--white); box-shadow: var(--shadow-sm); }
.btn--accent:hover{ background: var(--accent-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--outline{ background: transparent; border-color: rgba(255,255,255,.5); color: var(--white); }
.btn--outline:hover{ background: rgba(255,255,255,.12); border-color: var(--white); }
.btn--ghost{ background: transparent; border-color: var(--navy); color: var(--navy); }
.btn--ghost:hover{ background: var(--navy); color: var(--white); }
.btn--sm{ padding:.65em 1.2em; font-size:.82rem; }
.btn--block{ width:100%; }

/* ==========================================================================
   Header
   ========================================================================== */
.header{
  position: fixed; inset: 0 0 auto 0;
  height: var(--header-h);
  display:flex; align-items:center;
  background: rgba(20,40,61,0.97);
  backdrop-filter: blur(6px);
  z-index: 500;
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: box-shadow .2s ease;
}
.header.is-scrolled{ box-shadow: 0 6px 24px rgba(0,0,0,.25); }

.header .container{
  display:flex; align-items:center; justify-content:space-between;
  gap: 1rem;
}

.logo{
  display:flex; align-items:baseline; gap:.4rem;
  font-family: var(--font-display);
  color: var(--white);
  font-size: 1.5rem;
  letter-spacing:.06em;
}
.logo strong{ color: var(--accent); }
.logo span{
  font-family: var(--font-body);
  font-size: .62rem;
  letter-spacing:.1em;
  text-transform: uppercase;
  color: var(--steel-light);
  display:block;
  margin-top:2px;
}
.logo-wrap{ display:flex; flex-direction:column; line-height:1; }

.nav{ display:flex; align-items:center; gap: clamp(1.2rem, 2vw, 2.2rem); }
.nav a{
  color:#DCE4EA;
  font-family: var(--font-display);
  font-size: .92rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  position:relative;
  padding: .3em 0;
}
.nav a::after{
  content:""; position:absolute; left:0; right:100%; bottom:-2px; height:2px;
  background: var(--accent); transition: right .22s ease;
}
.nav a:hover::after, .nav a.active::after{ right:0; }

.header-actions{ display:flex; align-items:center; gap:1rem; }
.header-phone{
  display:flex; align-items:center; gap:.5em;
  font-family: var(--font-display);
  color: var(--white);
  font-size: 1rem;
  letter-spacing:.03em;
}
.header-phone svg{ width:18px; height:18px; stroke: var(--safety); flex-shrink:0; }

.burger{
  display:none;
  width:44px; height:44px;
  border:1px solid rgba(255,255,255,.25);
  border-radius: var(--radius);
  background: transparent;
  position: relative;
  cursor:pointer;
}
.burger span{
  position:absolute; left:11px; right:11px; height:2px; background: var(--white);
  transition: transform .25s ease, opacity .25s ease;
}
.burger span:nth-child(1){ top:15px; }
.burger span:nth-child(2){ top:21px; }
.burger span:nth-child(3){ top:27px; }
.burger.is-open span:nth-child(1){ transform: translateY(6px) rotate(45deg); }
.burger.is-open span:nth-child(2){ opacity:0; }
.burger.is-open span:nth-child(3){ transform: translateY(-6px) rotate(-45deg); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero{
  position: relative;
  min-height: 100svh;
  display:flex; align-items:center;
  padding-top: var(--header-h);
  background:
    linear-gradient(160deg, rgba(13,28,43,.92) 0%, rgba(20,40,61,.88) 55%, rgba(31,59,87,.85) 100%),
    repeating-linear-gradient(115deg, rgba(255,255,255,.035) 0 2px, transparent 2px 46px);
  color: var(--white);
  overflow: hidden;
}
.hero::before{
  /* silhouette de crête cévenole */
  content:"";
  position:absolute; left:0; right:0; bottom:0; height: 34%;
  background: linear-gradient(180deg, transparent, rgba(0,0,0,.35));
  pointer-events:none;
}
.hero-ridge{
  position:absolute; left:0; right:0; bottom:-2px; width:100%; height:auto;
  opacity:.9;
}
.hero-inner{
  position:relative; z-index:2;
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: clamp(2rem,4vw,4rem);
  align-items:center;
}
.hero-tag{
  display:inline-flex; align-items:center; gap:.6em;
  font-family: var(--font-display);
  font-size:.78rem; letter-spacing:.18em; text-transform:uppercase;
  color: var(--safety);
  padding:.5em 1em;
  border:1px solid rgba(255,201,51,.4);
  border-radius: 999px;
  margin-bottom:1.4rem;
}
.hero h1{
  color: var(--white);
  font-size: clamp(2.3rem, 5vw, 3.6rem);
  line-height: 1.06;
  max-width: 14ch;
  margin-bottom:.5rem;
}
.hero h1 em{ font-style:normal; color: var(--safety); }
.hero-sub{
  font-family: var(--font-display);
  text-transform:uppercase;
  letter-spacing:.06em;
  color:#B9C6D1;
  font-size: 1.05rem;
  display:flex; flex-wrap:wrap; gap:.6em 1em;
  margin: 1.2rem 0 2rem;
}
.hero-sub span{ display:flex; align-items:center; gap:.5em; }
.hero-sub span::before{ content:""; width:6px; height:6px; background: var(--accent); border-radius:50%; }
.hero-cta{ display:flex; flex-wrap:wrap; gap:1rem; }
.hero-stats{
  display:flex; gap: clamp(1.4rem,3vw,2.4rem);
  margin-top: 2.6rem;
  padding-top: 1.8rem;
  border-top: 1px solid rgba(255,255,255,.14);
}
.hero-stats div strong{
  display:block; font-family: var(--font-display); font-size:1.9rem; color: var(--white);
}
.hero-stats div span{ font-size:.78rem; letter-spacing:.05em; color:#9FB1BE; text-transform:uppercase; }

/* Illustration corde héroïque */
.hero-visual{ position:relative; display:flex; justify-content:center; }
.rope-badge{
  width: min(320px, 78vw); aspect-ratio: 1/1.15;
  position:relative;
}
/* Filtre turquoise pour l'image cordiste (remplace le SVG noir) */
.hero-visual img {
  filter: brightness(0) saturate(50%) invert(50%) sepia(80%) saturate(1100%) hue-rotate(131deg) brightness(96%) contrast(92%);
}



/* ==========================================================================
   Rope progress rail (signature element)
   ========================================================================== */
.rope-rail{
  position: fixed;
  left: 22px; top: 0; bottom:0;
  width: 46px;
  z-index: 400;
  display:flex; justify-content:center;
  pointer-events:none;
}
.rope-rail svg{ height:100%; width:100%; }

/* Rail : trait épais + torsade diagonale + petits nœuds réguliers */
.rope-rail .rope-path{
  fill:none;
  stroke: url(#ropeTwistBase);
  stroke-width: 7;
  stroke-linecap: round;
  stroke-dasharray: 4 1.5; /* segments courts = effet "torons" qui se succèdent */
}

/* Progression : même logique, texture torsadée + révélation au scroll conservée */
.rope-rail .rope-progress{
  fill:none;
  stroke: url(#ropeTwistProgress);
  stroke-width: 7;
  stroke-linecap: round;
  stroke-dasharray: 1600;
  stroke-dashoffset: 1600;
  transition: stroke-dashoffset .08s linear;
}

@media (max-width: 980px){
  .rope-rail{ display:none; }
}

/* ==========================================================================
   Services
   ========================================================================== */
.services-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}
.service-card{
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.8rem 1.6rem;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.service-card:hover{ transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
.service-icon{
  width:52px; height:52px;
  display:flex; align-items:center; justify-content:center;
  background: var(--navy);
  border-radius: var(--radius);
  margin-bottom: 1.1rem;
}
.service-icon svg{ width:26px; height:26px; stroke: var(--safety); fill:none; }
.service-card h3{
  font-size: 1.02rem;
  margin-bottom:.5rem;
  letter-spacing: .01em;
}
.service-card p{ font-size:.92rem; margin:0; }

/* ==========================================================================
   About
   ========================================================================== */
.about{
  display:grid;
  grid-template-columns: .9fr 1.1fr;
  gap: clamp(2rem,5vw,4rem);
  align-items:center;
}
.about-visual {
  position: relative;
  overflow: hidden;
}
.about-slideshow {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 320px; /* ajuste selon ton design */
}
.about-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
}
.about-slide.is-active {
  opacity: 1;
}
.about-badge{
  position:absolute; bottom: 1.2rem; left:1.2rem; right:1.2rem;
  background: rgba(20,40,61,.88);
  border: 1px solid rgba(255,201,51,.35);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  color: var(--white);
}
.about-badge strong{ font-family: var(--font-display); color: var(--safety); display:block; font-size:1.4rem; }
.about-badge span{ font-size:.8rem; letter-spacing:.03em; color:#C6D2DD; }

.about-list{ margin-top: 1.6rem; display:grid; gap:1rem; }
.about-list li{ display:flex; gap:.9rem; align-items:flex-start; color: var(--steel); }
.about-list svg{ width:20px; height:20px; flex-shrink:0; margin-top:3px; stroke: var(--accent); }

/* ==========================================================================
   Contact
   ========================================================================== */
.contact-grid{
  display:grid;
  /*grid-template-columns: 1fr 1fr;*/
  gap: clamp(2rem, 4vw, 3rem);
  align-items:start;
}
.contact-cards{ display:grid; gap:1rem; }
.contact-card{
  display:flex; align-items:center; gap:1rem;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: 1.2rem 1.3rem;
  transition: background .2s ease, transform .2s ease;
}
.contact-card:hover{ background: rgba(255,255,255,.1); transform: translateX(4px); }
.contact-card .icon{
  width:46px; height:46px; flex-shrink:0;
  display:flex; align-items:center; justify-content:center;
  background: var(--accent);
  border-radius: var(--radius);
}
.contact-card .icon svg{ width:22px; height:22px; stroke:var(--white); fill:none; }
.contact-card .label{ font-size:.74rem; letter-spacing:.08em; text-transform:uppercase; color:#9FB1BE; }
.contact-card .value{ font-family: var(--font-display); font-size:1.15rem; color: var(--white); }

.contact-services{ margin-top: 1.6rem; display:flex; flex-wrap:wrap; gap:.5rem; }
.pill{
  font-size:.76rem; letter-spacing:.03em;
  padding:.45em .9em;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.18);
  color: #C6D2DD;
}

.form-card{
  background: var(--white);
  border-radius: var(--radius);
  padding: clamp(1.6rem, 3vw, 2.4rem);
  box-shadow: var(--shadow-md);
}
.form-card h3{ color: var(--navy); }
.field{ margin-bottom: 1.1rem; }
.field label{
  display:block; font-size:.8rem; letter-spacing:.04em; text-transform:uppercase;
  color: var(--steel); margin-bottom:.4rem;
}
.field input, .field textarea{
  width:100%;
  font-family: var(--font-body);
  font-size: .98rem;
  padding: .85em 1em;
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--navy);
  transition: border-color .2s ease, background .2s ease;
}
.field input:focus, .field textarea:focus{ border-color: var(--accent); background: var(--white); }
.field textarea{ resize: vertical; min-height: 110px; }
.form-note{ font-size:.8rem; color: var(--steel-light); margin-top:.8rem; }

/* ==========================================================================
   Floating call button
   ========================================================================== */
.float-call{
  position: fixed;
  right: 1.2rem; bottom: 1.2rem;
  z-index: 600;
  display:flex; align-items:center; gap:.7em;
  background: var(--accent);
  color: var(--white);
  font-family: var(--font-display);
  letter-spacing:.03em;
  padding: .9em 1.3em;
  border-radius: 999px;
  box-shadow: 0 10px 28px rgba(26, 247, 255, 0.3);
  transition: transform .2s ease, box-shadow .2s ease, opacity .3s ease, visibility .3s ease;
  opacity:0; visibility:hidden; transform: translateY(12px);
}
.float-call.is-visible{ opacity:1; visibility:visible; transform: translateY(0); }
.float-call:hover{ transform: translateY(-3px); box-shadow: 0 14px 34px rgba(255,106,26,.5); }
.float-call svg{ width:20px; height:20px; stroke:var(--white); fill:none; }
.float-call .fc-text{ font-size:.92rem; }

/* ==========================================================================
   Footer
   ========================================================================== */
.footer{
  background: var(--navy-deep);
  color: #93A3B0;
  padding: 2.6rem 0 1.6rem;
}
.footer-top{
  display:flex; flex-wrap:wrap; justify-content:space-between; gap:1.6rem;
  padding-bottom: 1.8rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer .logo span{ color:#7C8B98; }
.footer-links{ display:flex; gap: 1.6rem; flex-wrap:wrap; }
.footer-links a:hover{ color: var(--safety); }
.footer-bottom{
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:.8rem;
  padding-top: 1.4rem;
  font-size:.82rem;
}
.footer-bottom a:hover{ color: var(--safety); }

/* ==========================================================================
   Scroll reveal
   ========================================================================== */
.reveal{ opacity:0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible{ opacity:1; transform: translateY(0); }
.reveal-stagger.is-visible > *{ }

/* legal modal */
.modal-overlay{
  position:fixed; inset:0; background: rgba(13,28,43,.7);
  display:flex; align-items:center; justify-content:center;
  padding: 1.5rem;
  z-index: 900;
  opacity:0; visibility:hidden; transition: opacity .25s ease, visibility .25s ease;
}
.modal-overlay.is-open{ opacity:1; visibility:visible; }
.modal{
  background: var(--white); border-radius: var(--radius);
  max-width: 560px; width:100%; max-height:80vh; overflow:auto;
  padding: 2rem;
}
.modal h3{ color: var(--navy); }
.modal p{ font-size:.92rem; }
.modal-close{
  display:flex; margin-left:auto;
  background:none; border:none; cursor:pointer;
  font-family: var(--font-display); color: var(--steel);
  font-size:.85rem; letter-spacing:.05em; text-transform:uppercase;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 980px){
  .nav{
    position: fixed;
    inset: var(--header-h) 0 0 0; /* remplace top/bottom séparés, plus fiable */
    height: calc(100dvh - var(--header-h)); /* dvh = hauteur réelle visible sur mobile */
    max-height: calc(100dvh - var(--header-h));
    background: var(--navy-deep);
    flex-direction: column;
    align-items: flex-start;
    padding: 2rem clamp(1.25rem,4vw,2.5rem);
    gap: 1.6rem;
    transform: translateX(100%);
    transition: transform .3s ease;
    overflow-y: auto;
    z-index: 999; /* évite d'être masqué par un autre élément */
  }
  .nav.is-open{ transform: translateX(0); }
  .nav a{ font-size: 1.2rem; }
  .header-phone .num-text{ display:none; }
  .burger{ display:block; }

  .hero-inner{ grid-template-columns: 1fr; text-align:left; }
  .hero-visual{ order:-1; margin-bottom: -1rem; }
  .rope-badge{ width: min(220px, 55vw); }

  .services-grid{ grid-template-columns: repeat(2, 1fr); }
  .about{ grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
}

@media (max-width: 620px){
  .services-grid{ grid-template-columns: 1fr; }
  .hero-stats{ flex-wrap:wrap; row-gap:1rem; }
  .footer-top, .footer-bottom{ flex-direction:column; }
}