/* ============================================================
   Antoine Anceau — Design tokens
   Palette : papier chaud + encre navy + accent cuivre (instruments)
   Type    : Fraunces (display) / Inter (texte) / IBM Plex Mono (technique)
   Signature : lignes de plan de carène (body plan) en filigrane
   ============================================================ */

:root{
  --paper:      #F6F2E9;
  --paper-dim:  #ECE5D6;
  --ink:        #182229;
  --navy:       #1C3A54;
  --navy-deep:  #10222F;
  --copper:     #A8672A;
  --copper-dim: #C98C4E;
  --blueline:   #7E93A3;
  --line:       rgba(24,34,41,0.14);

  --display: 'IBM Plex Sans', -apple-system, 'Segoe UI', sans-serif;
  --body:    'Inter', -apple-system, Segoe UI, sans-serif;
  --mono:    'IBM Plex Mono', ui-monospace, monospace;

  --maxw: 1120px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin:0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a{ color: inherit; text-decoration: none; }
img{ max-width:100%; display:block; }

.eyebrow{
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--copper);
  margin: 0 0 0.6rem;
}

.topline{
  background: var(--navy-deep);
  color: var(--blueline);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-align: center;
  padding: 6px 0;
}

.site-header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.4rem 1.5rem 1.1rem;
  border-bottom: 1px solid var(--line);
  position:relative;
}
.brand{ display:flex; flex-direction:column; gap:2px; }
.brand-name{
  font-family: var(--display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--navy);
}
.brand-tag{
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  color: var(--blueline);
}

.site-nav{ display:flex; gap: 2rem; }
.site-nav a{
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.03em;
  color: var(--ink);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: border-color .15s ease, color .15s ease;
}
.site-nav a:hover,
.site-nav a.is-active{
  color: var(--copper);
  border-bottom-color: var(--copper);
}

.nav-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none;
  border:none;
  cursor:pointer;
  padding: 6px;
}
.nav-toggle span{
  width:22px; height:2px; background:var(--ink); display:block;
}

@media (max-width: 720px){
  .nav-toggle{ display:flex; }
  .site-nav{
    display:none;
    position:absolute;
    top: 100%;
    left:0; right:0;
    background: var(--paper);
    flex-direction:column;
    gap:0;
    border-bottom: 1px solid var(--line);
    z-index: 20;
  }
  .site-nav.is-open{ display:flex; }
  .site-nav a{
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--line);
  }
}

.hero{
  position:relative;
  overflow:hidden;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 4.5rem 1.5rem 4rem;
}
.hero-lines{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  color: var(--blueline);
  opacity: 0.35;
  z-index:0;
  pointer-events:none;
}
.hero-content{ position:relative; z-index:1; max-width: 640px; }
.hero h1{
  font-family: var(--display);
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.08;
  margin: 0 0 0.6rem;
  color: var(--navy);
}
.hero .lede{
  font-size: 1.05rem;
  color: var(--ink);
  max-width: 46ch;
  margin: 0 0 2rem;
}
.hero .lede strong{ color: var(--copper); font-weight:600; }

.btn{
  display:inline-flex;
  align-items:center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  color: var(--paper);
  background: var(--navy);
  padding: 0.85rem 1.4rem;
  border: 1px solid var(--navy);
  transition: background .15s ease, color .15s ease;
}
.btn:hover{ background: var(--copper); border-color: var(--copper); }
.btn-outline{
  background: transparent;
  color: var(--navy);
}
.btn-outline:hover{ background: var(--navy); color: var(--paper); }

section{ max-width: var(--maxw); margin: 0 auto; padding: 3.5rem 1.5rem; }
.section-alt{ background: var(--paper-dim); }
.section-title{
  font-family: var(--display);
  font-size: 1.9rem;
  color: var(--navy);
  margin: 0 0 1.6rem;
}

.presentation{
  display:grid;
  grid-template-columns: 220px 1fr;
  gap: 2.5rem;
  border-top: 1px solid var(--line);
  padding-top: 2.5rem;
}
.presentation p{ margin: 0 0 1.1rem; }
.presentation p:last-child{ margin-bottom:0; }
@media (max-width: 640px){
  .presentation{ grid-template-columns: 1fr; gap: 0.8rem; }
}

.profile-list{
  list-style:none; margin: 1.5rem 0 0; padding:0;
  display:flex; flex-direction:column; gap:0.5rem;
  font-family: var(--mono); font-size: 0.85rem;
}
.profile-list li::before{ content:"— "; color: var(--copper); }

.grid{
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.6rem;
  border-top: 1px solid var(--line);
  padding-top: 2rem;
}
.card{
  border: 1px solid var(--line);
  background: var(--paper);
  display:flex;
  flex-direction:column;
  transition: border-color .15s ease, transform .15s ease;
}
.card:hover{ border-color: var(--copper); transform: translateY(-2px); }
.card-media{
  aspect-ratio: 4/3;
  background: var(--paper-dim);
  overflow:hidden;
  display:flex; align-items:center; justify-content:center;
}
.card-media img{ width:100%; height:100%; object-fit: cover; }
.card-media.is-empty{
  color: var(--blueline);
  font-family: var(--mono);
  font-size: 0.75rem;
}
.card-body{ padding: 1.1rem 1.2rem 1.3rem; flex:1; display:flex; flex-direction:column; }
.card-type{
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blueline);
  margin: 0 0 0.4rem;
}
.card-title{
  font-family: var(--display);
  font-size: 1.25rem;
  color: var(--navy);
  margin: 0 0 0.6rem;
}
.card-link{
  margin-top:auto;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--copper);
  border-top: 1px solid var(--line);
  padding-top: 0.7rem;
}
.card-link:hover{ text-decoration: underline; }

.contact-wrap{
  max-width: 560px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 5rem;
}
.contact-wrap .section-title{ margin-bottom: 0.5rem; }
.contact-intro{ color: var(--ink); margin: 0 0 2rem; }

.field{ margin-bottom: 1.3rem; display:flex; flex-direction:column; gap:0.4rem; }
.field label{
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--navy);
}
.field input,
.field textarea{
  font-family: var(--body);
  font-size: 1rem;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
}
.field input:focus,
.field textarea:focus{
  outline: none;
  border-color: var(--copper);
}
.field textarea{ min-height: 160px; resize: vertical; }

.form-msg{
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 0.9rem 1rem;
  margin-bottom: 1.5rem;
  border: 1px solid;
}
.form-msg.success{ color:#1E5B34; border-color:#1E5B34; background:#EAF4EC; }
.form-msg.error{ color:#8A2A1F; border-color:#8A2A1F; background:#FBEAE7; }

.site-footer{
  border-top: 1px solid var(--line);
  background: var(--navy-deep);
  color: var(--paper);
  padding: 3rem 1.5rem 1.5rem;
  position: relative;
}
.hull-line{
  display:block;
  width:100%;
  height:40px;
  color: var(--blueline);
  opacity:0.5;
  margin-bottom: 1.5rem;
}
.footer-grid{
  max-width: var(--maxw);
  margin: 0 auto;
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.footer-grid a{ display:block; padding: 0.15rem 0; color: var(--paper); opacity:0.85; }
.footer-grid a:hover{ opacity:1; color: var(--copper-dim); }
.footer-name{ font-family: var(--display); font-size: 1.15rem; margin:0 0 0.4rem; }
.footer-role{ font-family: var(--mono); font-size: 0.78rem; color: var(--blueline); margin:0; }
.footer-grid .eyebrow{ color: var(--copper-dim); }
.copyright{
  max-width: var(--maxw);
  margin: 2rem auto 0;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--blueline);
}
@media (max-width: 640px){
  .footer-grid{ grid-template-columns: 1fr; gap: 1.6rem; }
}