/* =========================================================
   TP VALE — Site vitrine
   Tokens issus de assets/charte-graphique-tp-vale.html
   ========================================================= */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}

:root{
  /* Couleurs — charte */
  --color-primary:        #2563EB;
  --color-primary-dark:   #1E3A8A;
  --color-primary-mid:    #1E40AF;
  --color-primary-light:  #DBEAFE;
  --color-primary-xlight: #EFF6FF;

  --color-bg:        #FFFFFF;
  --color-bg-alt:    #F8FAFC;
  --color-bg-soft:   #F1F5F9;

  --color-text:        #0F172A;
  --color-text-body:   #475569;
  --color-text-muted:  #94A3B8;
  --color-border:      #E2E8F0;

  /* Typographies */
  --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body:    'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Espacements */
  --space-xs: .5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;

  /* Rayons */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  /* Ombres */
  --shadow-sm: 0 1px 2px rgba(15,23,42,.04), 0 1px 3px rgba(15,23,42,.05);
  --shadow-md: 0 6px 16px rgba(15,23,42,.06), 0 2px 6px rgba(15,23,42,.04);
  --shadow-lg: 0 20px 40px rgba(30,58,138,.12);

  /* Transitions */
  --ease: cubic-bezier(.2,.7,.2,1);
  --t-fast: 180ms;
  --t-med:  280ms;

  /* Layout */
  --maxw: 1180px;
  --header-h: 76px;
}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  font-family:var(--font-body);
  font-weight:400;
  font-size:1rem;
  line-height:1.65;
  color:var(--color-text-body);
  background:var(--color-bg);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

img,svg{display:block;max-width:100%;}
a{color:var(--color-primary);text-decoration:none;transition:color var(--t-fast) var(--ease);}
a:hover{color:var(--color-primary-mid);}
ul{list-style:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
::selection{background:var(--color-primary-light);color:var(--color-primary-dark);}

.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 1.5rem;
}

/* =========================================================
   Typographie partagée
   ========================================================= */
.eyebrow{
  display:inline-block;
  font-size:11px;
  letter-spacing:4px;
  text-transform:uppercase;
  font-weight:600;
  color:var(--color-primary);
  margin-bottom:.85rem;
}
.eyebrow-light{color:rgba(255,255,255,.65);}

.section-title{
  font-family:var(--font-heading);
  font-weight:700;
  color:var(--color-text);
  font-size:clamp(1.75rem, 3.2vw, 2.6rem);
  line-height:1.15;
  letter-spacing:-.01em;
  margin-bottom:.85rem;
}
.section-title em{
  font-style:italic;
  color:var(--color-primary);
  font-weight:600;
}

.section-desc{
  max-width:620px;
  font-size:1.0625rem;
  color:var(--color-text-body);
  font-weight:300;
}

.section{padding:var(--space-xl) 0;}
.section-alt{background:var(--color-bg-alt);}
.section-head{
  text-align:center;
  margin:0 auto var(--space-lg);
  max-width:760px;
}
.section-head .section-desc{margin:0 auto;}

/* =========================================================
   Boutons
   ========================================================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.85rem 1.5rem;
  font-family:var(--font-body);
  font-weight:600;
  font-size:.95rem;
  letter-spacing:.01em;
  border-radius:var(--radius-sm);
  border:1.5px solid transparent;
  cursor:pointer;
  transition:all var(--t-med) var(--ease);
  white-space:nowrap;
}
.btn-sm{padding:.6rem 1.1rem;font-size:.875rem;}
.btn-block{width:100%;}

.btn-primary{
  background:var(--color-primary);
  color:#fff;
  box-shadow:var(--shadow-sm);
}
.btn-primary:hover{
  background:var(--color-primary-mid);
  color:#fff;
  transform:translateY(-1px);
  box-shadow:var(--shadow-md);
}

.btn-ghost{
  color:var(--color-primary);
  border-color:var(--color-border);
  background:transparent;
}
.btn-ghost:hover{
  border-color:var(--color-primary);
  background:var(--color-primary-xlight);
}

.btn-light{
  background:#fff;
  color:var(--color-primary-dark);
}
.btn-light:hover{
  background:var(--color-primary-xlight);
  color:var(--color-primary-dark);
  transform:translateY(-1px);
}

/* =========================================================
   Header
   ========================================================= */
.header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.85);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t-med) var(--ease), background var(--t-med) var(--ease);
}
.header.scrolled{
  background:rgba(255,255,255,.96);
  border-bottom-color:var(--color-border);
}
.header-inner{
  height:var(--header-h);
  display:flex;align-items:center;justify-content:space-between;
  gap:1rem;
}
.brand{display:inline-flex;align-items:center;}
.brand-mark{width:120px;height:auto;}

.nav{display:flex;align-items:center;gap:2rem;}
.nav-list{display:flex;gap:1.75rem;align-items:center;}
.nav-list a{
  color:var(--color-text);
  font-weight:500;
  font-size:.95rem;
  position:relative;
  padding:.25rem 0;
}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;
  height:2px;background:var(--color-primary);
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--t-med) var(--ease);
}
.nav-list a:hover{color:var(--color-primary);}
.nav-list a:hover::after{transform:scaleX(1);}

.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:var(--radius-sm);
  border:1px solid var(--color-border);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--color-text);border-radius:1px;transition:transform var(--t-fast) var(--ease),opacity var(--t-fast) var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.mobile-menu{
  background:#fff;
  border-bottom:1px solid var(--color-border);
  padding:1rem 1.5rem 1.5rem;
}
.mobile-menu ul{display:flex;flex-direction:column;gap:.25rem;}
.mobile-menu a{
  display:block;
  padding:.75rem 0;
  color:var(--color-text);
  font-weight:500;
  border-bottom:1px solid var(--color-border);
}
.mobile-menu a.btn{
  margin-top:.75rem;border-bottom:0;text-align:center;
  color:#fff;
}

/* =========================================================
   Hero
   ========================================================= */
.hero{
  position:relative;
  padding:calc(var(--space-xl) + 1rem) 0 var(--space-xl);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(37,99,235,.08), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(30,58,138,.06), transparent 60%),
    linear-gradient(180deg, #fff 0%, var(--color-bg-alt) 100%);
  overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;pointer-events:none;
  display:flex;justify-content:flex-end;align-items:center;
}
.hero-bg svg{
  width:60%;max-width:720px;
  transform:translateX(20%);
}
.hero-inner{position:relative;z-index:1;}
.hero-content{max-width:780px;}
.hero-title{
  font-family:var(--font-heading);
  font-weight:700;
  color:var(--color-text);
  font-size:clamp(2.25rem, 5.2vw, 4rem);
  line-height:1.05;
  letter-spacing:-.015em;
  margin-bottom:1.25rem;
}
.hero-title em{
  font-style:italic;
  font-weight:600;
  color:var(--color-primary);
}
.hero-desc{
  font-size:1.15rem;
  font-weight:300;
  color:var(--color-text-body);
  max-width:580px;
  margin-bottom:2rem;
}
.hero-cta{display:flex;gap:.85rem;flex-wrap:wrap;margin-bottom:2.5rem;}
.hero-bullets{
  display:flex;gap:1.75rem;flex-wrap:wrap;
  font-size:.875rem;color:var(--color-text-muted);
  font-weight:500;letter-spacing:.02em;
}
.hero-bullets li{display:flex;align-items:center;gap:.4rem;}
.hero-bullets span{color:var(--color-primary);font-weight:700;}

/* =========================================================
   Stats
   ========================================================= */
.stats{
  padding:var(--space-md) 0;
  background:var(--color-bg);
  border-top:1px solid var(--color-border);
  border-bottom:1px solid var(--color-border);
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(180px, 1fr));
  gap:2rem;
  text-align:center;
}
.stat-num{
  font-family:var(--font-heading);
  font-weight:700;
  font-size:clamp(1.75rem, 3vw, 2.5rem);
  color:var(--color-primary);
  line-height:1;
}
.stat-label{
  margin-top:.4rem;
  font-size:.75rem;
  letter-spacing:2.5px;
  text-transform:uppercase;
  color:var(--color-text-muted);
  font-weight:600;
}

/* =========================================================
   Services
   ========================================================= */
.services-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(260px, 1fr));
  gap:1.5rem;
}
.service-card{
  background:#fff;
  border:1px solid var(--color-border);
  border-radius:var(--radius-md);
  padding:2rem 1.75rem;
  transition:transform var(--t-med) var(--ease), box-shadow var(--t-med) var(--ease), border-color var(--t-med) var(--ease);
  position:relative;
  overflow:hidden;
}
.service-card::before{
  content:"";position:absolute;left:0;top:0;height:3px;width:0;
  background:var(--color-primary);
  transition:width var(--t-med) var(--ease);
}
.service-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-lg);
  border-color:transparent;
}
.service-card:hover::before{width:100%;}

.service-icon{
  width:52px;height:52px;
  background:var(--color-primary-xlight);
  color:var(--color-primary);
  border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:1.25rem;
}
.service-icon svg{width:26px;height:26px;}
.service-title{
  font-family:var(--font-heading);
  font-weight:600;
  font-size:1.35rem;
  color:var(--color-text);
  margin-bottom:.5rem;
  line-height:1.2;
}
.service-card>p{font-size:.95rem;margin-bottom:1rem;}
.service-list{
  border-top:1px solid var(--color-border);
  padding-top:1rem;
  display:flex;flex-direction:column;gap:.4rem;
}
.service-list li{
  font-size:.875rem;color:var(--color-text-body);
  padding-left:1rem;position:relative;
}
.service-list li::before{
  content:"";position:absolute;left:0;top:.55rem;
  width:5px;height:5px;border-radius:50%;
  background:var(--color-primary);
}

/* =========================================================
   Méthode (steps)
   ========================================================= */
.steps{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(220px, 1fr));
  gap:1.5rem;
  counter-reset:step;
  position:relative;
}
.step{
  background:#fff;
  border:1px solid var(--color-border);
  border-radius:var(--radius-md);
  padding:1.75rem 1.5rem;
  position:relative;
  transition:transform var(--t-med) var(--ease), box-shadow var(--t-med) var(--ease);
}
.step:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
}
.step-num{
  font-family:var(--font-heading);
  font-weight:700;
  font-size:2rem;
  color:var(--color-primary-light);
  line-height:1;
  margin-bottom:.75rem;
  letter-spacing:.02em;
}
.step h3{
  font-family:var(--font-heading);
  font-weight:600;
  font-size:1.15rem;
  color:var(--color-text);
  margin-bottom:.4rem;
}
.step p{font-size:.9rem;}

/* =========================================================
   À propos
   ========================================================= */
.apropos-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:3.5rem;
  align-items:center;
}
.apropos-text>p{
  font-size:1.05rem;
  margin-bottom:1rem;
}
.apropos-values{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:1.25rem;
  margin-top:2rem;
  padding-top:1.75rem;
  border-top:1px solid var(--color-border);
}
.value{display:flex;flex-direction:column;gap:.25rem;}
.value strong{
  font-family:var(--font-heading);
  font-size:1.1rem;
  color:var(--color-primary);
  font-weight:600;
}
.value span{font-size:.85rem;color:var(--color-text-body);line-height:1.5;}

.apropos-card{
  background:linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color:#fff;
  border-radius:var(--radius-lg);
  padding:2.5rem 2.25rem;
  position:relative;
  overflow:hidden;
  min-height:340px;
  display:flex;flex-direction:column;justify-content:flex-end;
  box-shadow:var(--shadow-lg);
}
.apropos-mark{
  position:absolute;
  top:-30px;right:-50px;
  width:280px;
  opacity:.65;
}
.quote{
  font-family:var(--font-heading);
  font-style:italic;
  font-size:1.25rem;
  line-height:1.45;
  color:#fff;
  margin-bottom:1.25rem;
  position:relative;z-index:1;
}
.quote-author{position:relative;z-index:1;}
.quote-author span{
  display:block;
  font-family:var(--font-heading);
  font-weight:700;
  font-size:1rem;
  color:#fff;
  letter-spacing:.05em;
}
.quote-author small{
  font-size:.7rem;
  letter-spacing:2.5px;
  text-transform:uppercase;
  color:rgba(255,255,255,.6);
}

/* =========================================================
   Témoignages
   ========================================================= */
.testimonials-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(280px, 1fr));
  gap:1.5rem;
}
.testimonial{
  background:#fff;
  border:1px solid var(--color-border);
  border-radius:var(--radius-md);
  padding:2rem 1.75rem;
  position:relative;
  transition:transform var(--t-med) var(--ease), box-shadow var(--t-med) var(--ease);
}
.testimonial::before{
  content:"\201C";
  font-family:var(--font-heading);
  font-size:4rem;
  font-weight:700;
  color:var(--color-primary-light);
  position:absolute;top:.25rem;right:1rem;line-height:1;
}
.testimonial:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-md);
}
.testimonial blockquote{
  font-family:var(--font-heading);
  font-size:1.05rem;
  line-height:1.55;
  color:var(--color-text);
  margin-bottom:1.25rem;
  position:relative;z-index:1;
}
.testimonial figcaption{
  border-top:1px solid var(--color-border);
  padding-top:1rem;
  display:flex;flex-direction:column;gap:.15rem;
}
.testimonial figcaption strong{
  font-family:var(--font-body);
  font-weight:600;
  color:var(--color-text);
  font-size:.95rem;
}
.testimonial figcaption span{
  font-size:.75rem;
  letter-spacing:1.5px;
  text-transform:uppercase;
  color:var(--color-primary);
  font-weight:600;
}

/* =========================================================
   CTA band
   ========================================================= */
.cta-band{
  background:var(--color-primary-dark);
  padding:var(--space-lg) 0;
  position:relative;overflow:hidden;
}
.cta-band::before,
.cta-band::after{
  content:"";position:absolute;border-radius:50%;
  border:60px solid rgba(255,255,255,.04);
  pointer-events:none;
}
.cta-band::before{width:600px;height:600px;top:-180px;right:-180px;}
.cta-band::after{width:380px;height:380px;bottom:-120px;left:-120px;}

.cta-inner{
  text-align:center;
  position:relative;z-index:1;
  max-width:640px;margin:0 auto;
}
.cta-title{
  font-family:var(--font-heading);
  font-weight:700;
  font-size:clamp(1.75rem, 3.6vw, 2.6rem);
  line-height:1.15;
  color:#fff;
  margin-bottom:.85rem;
}
.cta-title em{font-style:italic;color:var(--color-primary-light);font-weight:600;}
.cta-desc{
  color:rgba(255,255,255,.75);
  font-size:1.05rem;
  margin-bottom:1.75rem;
}

/* =========================================================
   Contact
   ========================================================= */
.contact-grid{
  display:grid;
  grid-template-columns:1fr 1.2fr;
  gap:3.5rem;
  align-items:start;
}
.contact-list{
  display:flex;flex-direction:column;gap:1.25rem;
  margin-top:2rem;
  padding-top:1.5rem;
  border-top:1px solid var(--color-border);
}
.contact-list li{display:flex;flex-direction:column;gap:.2rem;}
.contact-label{
  font-size:.7rem;
  letter-spacing:2.5px;
  text-transform:uppercase;
  color:var(--color-text-muted);
  font-weight:600;
}
.contact-list a,
.contact-list span{
  font-size:1.05rem;
  color:var(--color-text);
  font-weight:500;
}
.contact-list a:hover{color:var(--color-primary);}

.contact-form{
  background:#fff;
  border:1px solid var(--color-border);
  border-radius:var(--radius-md);
  padding:2rem;
  display:flex;flex-direction:column;gap:1rem;
}
.field{display:flex;flex-direction:column;gap:.4rem;}
.field label{
  font-size:.75rem;
  letter-spacing:1.5px;
  text-transform:uppercase;
  color:var(--color-text-muted);
  font-weight:600;
}
.field input,
.field select,
.field textarea{
  font:inherit;
  width:100%;
  padding:.75rem .9rem;
  border:1px solid var(--color-border);
  border-radius:var(--radius-sm);
  background:#fff;
  color:var(--color-text);
  transition:border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--color-primary);
  box-shadow:0 0 0 4px var(--color-primary-xlight);
}
.field textarea{resize:vertical;min-height:120px;}

.field-check{
  flex-direction:row;align-items:flex-start;gap:.6rem;
}
.field-check input{width:auto;margin-top:.2rem;accent-color:var(--color-primary);}
.field-check label{
  text-transform:none;letter-spacing:0;font-size:.85rem;
  color:var(--color-text-body);font-weight:400;
}

.form-hint{
  margin-top:.5rem;
  font-size:.8rem;
  color:var(--color-text-muted);
  text-align:center;
}

/* =========================================================
   Page de remerciement (merci.html)
   ========================================================= */
.thanks{
  min-height:100vh;
  display:flex;align-items:center;justify-content:center;
  padding:var(--space-lg) 0;
  background:
    radial-gradient(900px 500px at 50% -10%, rgba(37,99,235,.08), transparent 60%),
    linear-gradient(180deg, #fff 0%, var(--color-bg-alt) 100%);
}
.thanks-inner{
  text-align:center;
  max-width:640px;
}
.thanks-mark{
  width:84px;height:84px;
  margin:0 auto 1.5rem;
  display:flex;align-items:center;justify-content:center;
  background:var(--color-primary-xlight);
  color:var(--color-primary);
  border-radius:50%;
  border:1px solid var(--color-primary-light);
}
.thanks-mark svg{width:42px;height:42px;}
.thanks-title{
  font-family:var(--font-heading);
  font-weight:700;
  color:var(--color-text);
  font-size:clamp(1.75rem, 3.6vw, 2.6rem);
  line-height:1.15;
  letter-spacing:-.01em;
  margin-bottom:1rem;
}
.thanks-title em{font-style:italic;color:var(--color-primary);font-weight:600;}
.thanks-desc{
  font-size:1.075rem;
  color:var(--color-text-body);
  margin-bottom:2rem;
}
.thanks-desc strong{color:var(--color-text);font-weight:600;}
.thanks-cta{
  display:flex;gap:.85rem;justify-content:center;flex-wrap:wrap;
  margin-bottom:2.5rem;
}
.thanks-contact{
  display:flex;gap:2rem;justify-content:center;flex-wrap:wrap;
  padding-top:1.75rem;
  border-top:1px solid var(--color-border);
}
.thanks-contact li{
  display:flex;flex-direction:column;gap:.2rem;
  text-align:center;
}
.thanks-contact span{
  font-size:.7rem;
  letter-spacing:2.5px;
  text-transform:uppercase;
  color:var(--color-text-muted);
  font-weight:600;
}
.thanks-contact a{
  font-size:1rem;
  color:var(--color-text);
  font-weight:500;
}
.thanks-contact a:hover{color:var(--color-primary);}

/* =========================================================
   Footer
   ========================================================= */
.footer{
  background:var(--color-primary-dark);
  color:rgba(255,255,255,.7);
  padding-top:var(--space-lg);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr repeat(3, 1fr);
  gap:3rem;
  padding-bottom:var(--space-md);
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-mark{width:140px;}
.footer-tagline{
  margin-top:1rem;
  font-size:.7rem;
  letter-spacing:3px;
  text-transform:uppercase;
  color:rgba(255,255,255,.5);
  font-weight:600;
}
.footer-col h4{
  font-family:var(--font-heading);
  font-weight:600;
  font-size:1rem;
  color:#fff;
  margin-bottom:1rem;
}
.footer-col ul{display:flex;flex-direction:column;gap:.6rem;}
.footer-col a,
.footer-col li{
  color:rgba(255,255,255,.65);
  font-size:.9rem;
}
.footer-col a:hover{color:#fff;}

.footer-bottom{padding:1.5rem 0;}
.footer-bottom-inner{
  display:flex;justify-content:space-between;align-items:center;
  gap:1rem;flex-wrap:wrap;
  font-size:.8rem;
  color:rgba(255,255,255,.45);
}
.footer-bottom ul{display:flex;gap:1.5rem;}
.footer-bottom a{color:rgba(255,255,255,.5);}
.footer-bottom a:hover{color:#fff;}

/* =========================================================
   Reveal animations (Intersection Observer)
   ========================================================= */
.reveal{
  opacity:0;
  transform:translateY(20px);
  transition:opacity 700ms var(--ease), transform 700ms var(--ease);
}
.reveal.is-visible{
  opacity:1;
  transform:translateY(0);
}

@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 960px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:2rem;}
  .apropos-grid{grid-template-columns:1fr;gap:2.5rem;}
  .contact-grid{grid-template-columns:1fr;gap:2.5rem;}
  .apropos-values{grid-template-columns:repeat(3, 1fr);gap:.75rem;}
}

@media (max-width: 720px){
  :root{--header-h:64px;}
  .nav{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:var(--space-lg) 0;}
  .hero{padding:var(--space-lg) 0;}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn{width:100%;}
  .hero-bullets{flex-direction:column;gap:.5rem;}
  .footer-grid{grid-template-columns:1fr;gap:2rem;text-align:left;}
  .footer-bottom-inner{flex-direction:column;align-items:flex-start;}
  .apropos-values{grid-template-columns:1fr;}
  .contact-form{padding:1.5rem;}
  .brand-mark{width:96px;}
}