/* ==========================================================================
   COLLECTIF HYDRES — feuille de style globale
   Tokens : couleur, type, espacement. Composants ensuite.
   ========================================================================== */

:root{
  /* Couleur */
  --brand:       #95A8C4;   /* bleu Hydres — accents, boutons, survols */
  --brand-dark:  #5F7796;   /* bleu profond — texte sur clair, hover */
  --brand-pale:  #E4E9F0;   /* bleu très clair — fonds doux */
  --rust:        #B9633A;   /* terracotta — réservé à Torann uniquement */
  --ink:         #14161A;   /* noir chaud — fonds sombres, plateau */
  --ink-soft:    #23262D;
  --paper:       #F3F2EE;   /* blanc cassé — fonds clairs */
  --paper-dim:   #E8E6DF;
  --white:       #FFFFFF;

  /* Typographie */
  --font-display: "League Gothic", "Oswald", sans-serif;
  --font-body:    "Poppins", "Helvetica Neue", Arial, sans-serif;

  /* Rythme */
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --section-py: clamp(3.5rem, 9vw, 7rem);
  --radius: 2px;
  --ease: cubic-bezier(.2,.7,.2,1);
}

/* ---- Reset minimal ------------------------------------------------------ */
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ margin:0; font-family:var(--font-display); font-weight:400; text-transform:uppercase; letter-spacing:.03em; }
p{ margin:0 0 1em; }
button{ font-family:inherit; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:.001ms !important; transition-duration:.001ms !important; }
}

/* Toutes les photos passent en N&B : seul le bleu / terracotta porte la couleur */
img.ph{
  filter:grayscale(1) contrast(1.05);
  transition:filter .5s var(--ease);
}
img.ph:hover{ filter:grayscale(.2) contrast(1.05); }

:focus-visible{ outline:2px solid var(--brand); outline-offset:3px; }

/* ---- Layout -------------------------------------------------------------- */
.container{ max-width:1240px; margin-inline:auto; padding-inline:var(--gutter); }
.section{ padding-block:var(--section-py); position:relative; }
.section--ink{ background:var(--ink); color:var(--paper); }
.section--brand{ background:var(--brand); color:var(--ink); }
.section--pale{ background:var(--brand-pale); color:var(--ink); }

.eyebrow{
  display:inline-block;
  font-family:var(--font-body);
  font-size:.72rem;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--brand-dark);
  margin-bottom:1em;
}
.section--ink .eyebrow,.section--brand .eyebrow{ color:var(--paper); opacity:.7; }

/* Étiquette verticale — signature graphique reprise des dossiers imprimés
   (le mot pivoté "SOMMAIRE" en marge). Sert de repère de section. */
.spine{
  position:absolute;
  left:0; top:0; bottom:0;
  width:clamp(2.5rem, 6vw, 4.5rem);
  display:none;
  align-items:flex-end;
  padding-bottom:clamp(1.5rem,4vw,3rem);
  overflow:hidden;
  pointer-events:none;
}
.spine span{
  writing-mode:vertical-rl;
  transform:rotate(180deg);
  font-family:var(--font-display);
  font-size:clamp(1.6rem,3.2vw,2.6rem);
  letter-spacing:.08em;
  color:var(--brand);
  opacity:.35;
  white-space:nowrap;
}
.section--ink .spine span{ color:var(--paper); opacity:.18; }
.section--brand .spine span{ color:var(--ink); opacity:.25; }
@media (min-width:900px){ .spine{ display:flex; } .section{ padding-left:calc(var(--gutter) + 4.5rem); } .section > .container{ padding-inline:0; margin-inline:0; max-width:1160px; } }

h1{ font-size:clamp(2.6rem,7vw,5.2rem); line-height:.98; letter-spacing:.01em; }
h2{ font-size:clamp(2rem,4.6vw,3.4rem); line-height:1.02; margin-bottom:.6em; }
h3{ font-size:clamp(1.3rem,2.4vw,1.7rem); margin-bottom:.4em; }
.lede{ font-size:clamp(1.05rem,1.4vw,1.25rem); max-width:42em; }

/* ---- Boutons -------------------------------------------------------------- */
.btn{
  display:inline-flex; align-items:center; gap:.5em;
  font-family:var(--font-body); font-weight:600; font-size:.85rem;
  letter-spacing:.06em; text-transform:uppercase;
  padding:.85em 1.6em;
  border:1px solid currentColor;
  border-radius:var(--radius);
  transition:background .25s var(--ease), color .25s var(--ease), transform .25s var(--ease);
  cursor:pointer;
  background:transparent;
}
.btn:hover{ transform:translateY(-2px); }
.btn-primary{ background:var(--brand); border-color:var(--brand); color:var(--ink); }
.btn-primary:hover{ background:var(--brand-dark); border-color:var(--brand-dark); color:var(--white); }
.btn-ghost-light{ color:var(--white); border-color:rgba(255,255,255,.55); }
.btn-ghost-light:hover{ background:var(--white); color:var(--ink); }
.btn-ghost-dark{ color:var(--ink); border-color:var(--ink); }
.btn-ghost-dark:hover{ background:var(--ink); color:var(--white); }
.btn-rust{ background:var(--rust); border-color:var(--rust); color:var(--white); }
.btn-rust:hover{ background:#8f4b28; border-color:#8f4b28; }

.tag{
  display:inline-block; font-size:.68rem; font-weight:600; letter-spacing:.14em;
  text-transform:uppercase; padding:.4em .8em; border-radius:100px;
  background:var(--brand); color:var(--ink);
}
.tag--rust{ background:var(--rust); color:var(--white); }
.tag--outline{ background:transparent; border:1px solid currentColor; }

/* ---- En-tête / bandeau ---------------------------------------------------- */
.site-header{
  position:fixed; inset-inline:0; top:0; z-index:100;
  display:flex; align-items:center; justify-content:space-between;
  padding:1.1rem var(--gutter);
  background:transparent;
  transition:background .35s var(--ease), padding .35s var(--ease), box-shadow .35s var(--ease);
}
.site-header.is-scrolled,.site-header.is-solid{
  background:var(--ink); padding-block:.75rem;
  box-shadow:0 6px 24px rgba(0,0,0,.18);
}
.site-header .logo{ display:flex; align-items:center; gap:.6em; }
.site-header .logo img{ height:34px; width:auto; filter:none; }
.site-header .logo span{ font-family:var(--font-display); color:var(--white); font-size:1.15rem; letter-spacing:.05em; }

.nav{ display:flex; align-items:center; gap:2.2rem; }
.nav-links{ display:none; gap:1.8rem; align-items:center; }
.nav-links a{
  color:var(--white); font-size:.82rem; font-weight:500; letter-spacing:.05em; text-transform:uppercase;
  position:relative; padding-bottom:.3em;
}
.nav-links a::after{
  content:""; position:absolute; left:0; right:100%; bottom:0; height:1px; background:var(--brand);
  transition:right .25s var(--ease);
}
.nav-links a:hover::after,.nav-links a.is-active::after{ right:0; }
.nav-links a.is-active{ color:var(--brand); }
@media (min-width:920px){ .nav-links{ display:flex; } }

.nav-social{ display:flex; gap:.9rem; }
.nav-social a{ color:var(--white); opacity:.75; }
.nav-social a:hover{ opacity:1; }

.nav-toggle{
  display:flex; flex-direction:column; gap:5px; width:26px; background:none; border:0; padding:4px; cursor:pointer;
}
.nav-toggle span{ display:block; height:2px; background:var(--white); }
@media (min-width:920px){ .nav-toggle{ display:none; } }

.nav-mobile{
  position:fixed; inset:0; background:var(--ink); z-index:99;
  display:flex; flex-direction:column; justify-content:center; align-items:center; gap:2rem;
  transform:translateY(-100%); transition:transform .4s var(--ease);
}
.nav-mobile.is-open{ transform:translateY(0); }
.nav-mobile a{ font-family:var(--font-display); font-size:2rem; color:var(--white); text-transform:uppercase; letter-spacing:.04em; }
.nav-mobile a.is-active{ color:var(--brand); }
.nav-mobile .btn{ margin-top:1rem; }

/* ---- Hero ------------------------------------------------------------------ */
.hero{
  position:relative; min-height:100vh; display:flex; flex-direction:column; justify-content:flex-end;
  color:var(--white); overflow:hidden;
}
.hero-media{ position:absolute; inset:0; z-index:0; }
.hero-media img{ width:100%; height:100%; object-fit:cover; filter:grayscale(.55) contrast(1.05) brightness(.85); }
.hero::after{
  content:""; position:absolute; inset:0; z-index:1;
  background:linear-gradient(180deg, rgba(20,22,26,.35) 0%, rgba(20,22,26,.35) 40%, rgba(20,22,26,.92) 100%);
}
.hero-content{ position:relative; z-index:2; padding:0 var(--gutter) clamp(3.5rem,9vw,6rem); }
.hero-mark{ height:56px; margin-bottom:1.2rem; opacity:.9; }
.hero .eyebrow{ color:var(--brand); opacity:1; }
.hero h1{ color:var(--white); }
.hero-tagline{ font-size:clamp(1rem,1.6vw,1.3rem); max-width:34em; margin-top:.8rem; color:rgba(255,255,255,.85); }
.hero-scroll{
  position:absolute; bottom:1.6rem; left:var(--gutter); z-index:2;
  display:flex; align-items:center; gap:.6em; font-size:.72rem; letter-spacing:.18em; text-transform:uppercase; color:var(--white); opacity:.75;
}
.hero-scroll .line{ width:1px; height:32px; background:currentColor; animation:scrollcue 1.8s infinite var(--ease); }
@keyframes scrollcue{ 0%{ transform:scaleY(0); transform-origin:top;} 50%{ transform:scaleY(1); transform-origin:top;} 51%{ transform-origin:bottom;} 100%{ transform:scaleY(0); transform-origin:bottom;} }

.page-hero{
  position:relative; min-height:56vh; display:flex; align-items:flex-end; color:var(--white); overflow:hidden;
}
.page-hero .hero-media img{ filter:grayscale(.7) contrast(1.05) brightness(.6); }
.page-hero .hero-content{ padding-block:clamp(6rem,14vw,9rem) clamp(2.5rem,6vw,3.5rem); }

/* ---- Grilles / cartes ------------------------------------------------------- */
.grid{ display:grid; gap:clamp(1.5rem,3vw,2.5rem); }
.grid-2{ grid-template-columns:1fr; }
.grid-3{ grid-template-columns:1fr; }
@media (min-width:760px){ .grid-2{ grid-template-columns:1fr 1fr; } .grid-3{ grid-template-columns:repeat(3,1fr); } }

.card{ display:block; background:var(--white); }
.card-photo{ aspect-ratio:4/5; overflow:hidden; }
.card-photo img{ width:100%; height:100%; object-fit:cover; transition:transform .6s var(--ease); }
.card:hover .card-photo img{ transform:scale(1.04); }
.card-body{ padding:1.4rem 0 0; }
.card-meta{ display:flex; gap:.6em; align-items:center; margin-bottom:.7em; }

.strip{
  display:flex; gap:1rem; overflow-x:auto; padding-bottom:.5rem;
  scroll-snap-type:x mandatory; -webkit-overflow-scrolling:touch;
}
.strip img{ height:clamp(220px,38vw,380px); width:auto; scroll-snap-align:start; flex:0 0 auto; }
.strip::-webkit-scrollbar{ height:6px; }
.strip::-webkit-scrollbar-thumb{ background:var(--brand); }

.list-plain{ display:flex; flex-direction:column; }
.list-plain > *{ border-top:1px solid rgba(0,0,0,.12); padding-block:1.1rem; }
.section--ink .list-plain > *{ border-color:rgba(255,255,255,.16); }

/* ---- Agenda ----------------------------------------------------------------- */
.agenda-row{ display:grid; grid-template-columns:1fr; gap:.4rem 1.5rem; align-items:baseline; }
@media (min-width:640px){ .agenda-row{ grid-template-columns:11em 1fr auto; } }
.agenda-date{ font-family:var(--font-display); font-size:1.2rem; letter-spacing:.03em; color:var(--brand-dark); }
.section--ink .agenda-date{ color:var(--brand); }
.agenda-place{ font-size:.85rem; opacity:.7; }

/* ---- Pied de page ------------------------------------------------------------ */
.site-footer{ background:var(--ink); color:var(--paper); padding-block:4rem 1.5rem; }
.footer-top{ display:grid; gap:2.5rem; grid-template-columns:1fr; padding-bottom:3rem; }
@media (min-width:760px){ .footer-top{ grid-template-columns:1.4fr 1fr 1fr 1fr; } }
.footer-brand .logo{ display:flex; align-items:center; gap:.6em; margin-bottom:.8em; }
.footer-brand .logo img{ height:38px; }
.footer-brand .logo span{ font-family:var(--font-display); font-size:1.3rem; letter-spacing:.05em; }
.footer-brand p{ opacity:.65; max-width:26em; font-size:.92rem; }
.site-footer h4{ font-family:var(--font-body); font-size:.72rem; letter-spacing:.18em; opacity:.55; margin-bottom:1.1em; text-transform:uppercase; }
.site-footer ul li{ margin-bottom:.6em; font-size:.92rem; opacity:.85; }
.site-footer ul li a:hover{ color:var(--brand); }
.footer-social{ display:flex; gap:1rem; margin-top:1rem; }
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14); padding-top:1.4rem;
  display:flex; flex-wrap:wrap; gap:1rem; justify-content:space-between; font-size:.78rem; opacity:.55;
}

/* ---- Reveal on scroll --------------------------------------------------------- */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible{ opacity:1; transform:none; }

/* ---- Utilitaires --------------------------------------------------------------- */
.mt-lg{ margin-top:clamp(2rem,5vw,3.5rem); }
.center{ text-align:center; margin-inline:auto; }
.flex-between{ display:flex; align-items:flex-end; justify-content:space-between; gap:1.5rem; flex-wrap:wrap; }