/* ============================================================
   VEXPLORA — base.css
   Shared design system across every page (index, patients, epworth).
   Page-specific components stay in that page's own <style> block.
   ============================================================ */

/* ============ TOKENS ============ */
@font-face{
  font-family:'Space Mono';
  src:url('../fonts/SpaceMono-Regular.ttf') format('truetype');
  font-weight:400; font-style:normal; font-display:swap;
}

:root{
  --blue:#1B17FF;
  --blue-soft:#6F6BFF;
  --ink:#0A0B0D;
  --white:#FFFFFF;
  --paper:#F7F7F8;
  --hairline:#E3E4E8;
  --muted:#6B7280;
  --muted-on-dark:rgba(255,255,255,0.6);
  --font-body:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Helvetica,Arial,sans-serif;
  --font-mono:'Space Mono','SF Mono','Courier New',monospace;
  --section-pad: clamp(80px, 12vw, 160px);
  --side-pad: clamp(24px, 6vw, 96px);
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:auto; }
body{
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button{ font-family:inherit; cursor:pointer; }
.mono{ font-family:var(--font-mono); }
.container{ width:100%; padding-left:var(--side-pad); padding-right:var(--side-pad); }

/* ============ REVEAL PRIMITIVES ============ */
.reveal{ opacity:0; transform:translateY(36px); }
.reveal.is-in{ opacity:1; transform:translateY(0); transition:opacity .9s cubic-bezier(.16,.84,.44,1), transform .9s cubic-bezier(.16,.84,.44,1); }
.reveal-line{ overflow:hidden; display:block; }
.reveal-line > span{ display:inline-block; transform:translateY(105%); transition:transform .9s cubic-bezier(.16,.84,.44,1); }
.reveal-line.is-in > span{ transform:translateY(0); }

/* ============ HEADER ============ */
header{
  position:fixed; top:0; left:0; right:0; z-index:200;
  display:flex; align-items:center; justify-content:space-between;
  padding:22px var(--side-pad);
  transition:background .4s ease, backdrop-filter .4s ease, border-color .4s ease;
  border-bottom:1px solid transparent;
}
header.scrolled{
  background:rgba(255,255,255,0.85);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--hairline);
}
.logo-lockup{ display:inline-flex; align-items:center; gap:9px; position:relative; }
header .logo{ height:20px; width:auto; transition:opacity .3s ease; }
header .logo.on-dark{ position:absolute; opacity:0; }
header.on-dark-section:not(.scrolled) .logo.on-light{ opacity:0; }
header.on-dark-section:not(.scrolled) .logo.on-dark{ opacity:1; }
.logo-word{
  font-family:var(--font-mono); font-size:18px; font-weight:400; letter-spacing:-.01em;
  color:var(--ink); transition:color .3s ease;
}
header.on-dark-section:not(.scrolled) .logo-word{ color:#fff; }
footer .logo-word{ color:#fff; font-size:18px; }
.header-right{ display:flex; align-items:center; gap:28px; }
.section-index{
  font-family:var(--font-mono); font-size:12px; letter-spacing:.06em;
  color:var(--muted); display:flex; align-items:center; gap:6px;
}
header.on-dark-section:not(.scrolled) .section-index{ color:var(--muted-on-dark); }
.section-index .cur{ color:var(--blue); }
header.on-dark-section:not(.scrolled) .section-index .cur{ color:var(--blue-soft); }
.btn{
  display:inline-flex; align-items:center; gap:8px;
  background:var(--blue); color:#fff; border:none; border-radius:100px;
  padding:13px 26px; font-size:14.5px; font-weight:600;
  transition:transform .25s ease, opacity .25s ease, background .25s ease;
}
.btn:hover{ opacity:.9; transform:translateY(-1px); }
.btn.ghost{ background:transparent; color:var(--ink); border:1px solid var(--hairline); }
header.on-dark-section:not(.scrolled) .btn.ghost{ color:#fff; border-color:rgba(255,255,255,0.3); }
.burger{
  width:42px; height:42px; border-radius:100px; border:1px solid var(--hairline); background:#fff;
  display:flex; align-items:center; justify-content:center; flex-direction:column; gap:4px;
}
.burger span{ width:16px; height:1.5px; background:var(--ink); display:block; }

@media (max-width:640px){
  .header-right .btn{ display:none !important; }
}

/* ============ NAV OVERLAY (mobile / full menu) ============ */
.nav-overlay{
  position:fixed; inset:0; z-index:300; background:var(--ink); color:#fff;
  display:flex; flex-direction:column; justify-content:center; gap:18px;
  padding:var(--side-pad);
  opacity:0; pointer-events:none; transform:translateY(-12px);
  transition:opacity .45s ease, transform .45s ease;
}
.nav-overlay.open{ opacity:1; pointer-events:auto; transform:translateY(0); }
.nav-overlay a{ font-size:clamp(28px,6vw,52px); font-weight:700; letter-spacing:-.01em; }
.nav-overlay a span{ color:var(--blue-soft); font-family:var(--font-mono); font-size:16px; margin-right:14px; vertical-align:middle; }
.nav-overlay .close{
  position:absolute; top:22px; right:var(--side-pad);
  width:42px; height:42px; border-radius:100px; border:1px solid rgba(255,255,255,.25);
  display:flex; align-items:center; justify-content:center; color:#fff; background:transparent;
}

/* ============ AMBIENT BLUE FIELD (hero / dark sections) ============ */
.ambient{
  position:absolute; inset:0; overflow:hidden; background:var(--ink);
}
.ambient::before, .ambient::after{
  content:''; position:absolute; border-radius:50%; filter:blur(90px);
  opacity:.75;
}
.ambient::before{
  width:70vw; height:70vw; top:-15vw; right:-15vw;
  background:radial-gradient(circle, var(--blue) 0%, transparent 70%);
  animation:driftA 18s ease-in-out infinite alternate;
}
.ambient::after{
  width:55vw; height:55vw; bottom:-20vw; left:-10vw;
  background:radial-gradient(circle, var(--blue-soft) 0%, transparent 70%);
  animation:driftB 22s ease-in-out infinite alternate;
}
@keyframes driftA{ 0%{ transform:translate(0,0) scale(1);} 100%{ transform:translate(-6vw,8vw) scale(1.15);} }
@keyframes driftB{ 0%{ transform:translate(0,0) scale(1);} 100%{ transform:translate(8vw,-6vw) scale(1.1);} }
.ambient video{
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
  opacity:0; /* passe à 1 quand la vidéo réelle est branchée, cf. commentaire HTML */
}
.ambient .veil{ position:absolute; inset:0; background:linear-gradient(180deg, rgba(10,11,13,.15), rgba(10,11,13,.55) 80%); }

/* ---------- Ambient with a photo backplate (e.g. hero equipment shot) ---------- */
.ambient.has-photo{ background:var(--ink); }
.ambient.has-photo .photo{
  position:absolute; inset:0; background-size:cover; background-position:center;
  opacity:.55;
}
.ambient.has-photo::before, .ambient.has-photo::after{ opacity:.55; mix-blend-mode:screen; }
.ambient.has-photo .veil{ background:linear-gradient(180deg, rgba(10,11,13,.35) 0%, rgba(10,11,13,.55) 45%, rgba(10,11,13,.88) 100%); }

/* ============ HERO ============ */
.hero{ position:relative; min-height:100vh; display:flex; flex-direction:column; justify-content:flex-end; color:#fff; }
.hero-body{ position:relative; z-index:2; padding:0 var(--side-pad) 90px; }
.eyebrow{
  font-family:var(--font-mono); font-size:12px; letter-spacing:.1em; text-transform:uppercase;
  color:var(--blue-soft); display:inline-flex; align-items:center; gap:10px; margin-bottom:22px;
  border:1px solid rgba(255,255,255,.22); border-radius:100px; padding:8px 16px;
}
section:not(.hero) .eyebrow, .light-section .eyebrow{ color:var(--blue); border-color:var(--hairline); }
.hero h1{
  font-size:clamp(36px, 6.2vw, 84px); font-weight:800; line-height:1.04; letter-spacing:-.02em;
  max-width:1100px; margin-bottom:26px;
}
.hero h1 .accent{ color:var(--blue-soft); }
.hero p.lead{ font-size:clamp(15px,1.6vw,19px); color:rgba(255,255,255,.72); max-width:560px; margin-bottom:38px; line-height:1.6; }
.hero-cta{ display:flex; gap:14px; flex-wrap:wrap; }
.scroll-cue{
  position:absolute; bottom:28px; left:50%; transform:translateX(-50%); z-index:2;
  font-family:var(--font-mono); font-size:11px; letter-spacing:.12em; text-transform:uppercase;
  color:rgba(255,255,255,.55); display:flex; flex-direction:column; align-items:center; gap:10px;
}
.scroll-cue .line{ width:1px; height:34px; background:rgba(255,255,255,.35); overflow:hidden; position:relative; }
.scroll-cue .line::after{ content:''; position:absolute; top:-100%; left:0; width:100%; height:100%; background:var(--blue-soft); animation:cue 1.8s ease-in-out infinite; }
@keyframes cue{ 0%{ top:-100%;} 60%{ top:100%;} 100%{ top:100%;} }

/* ============ GENERIC SECTION ============ */
section{ position:relative; }
.light-section{ background:var(--white); color:var(--ink); padding:var(--section-pad) 0; }
.paper-section{ background:var(--paper); }
.dark-section{ position:relative; color:#fff; padding:var(--section-pad) 0; overflow:hidden; }
.dark-section .container{ position:relative; z-index:2; }
.sec-num{
  font-family:var(--font-mono); font-size:13px; color:var(--blue); margin-bottom:18px; display:block;
}
.dark-section .sec-num{ color:var(--blue-soft); }
.sec-title{ font-size:clamp(26px,3.4vw,46px); font-weight:700; letter-spacing:-.015em; line-height:1.15; max-width:820px; }
.sec-title .accent{ color:var(--blue); }
.dark-section .sec-title .accent{ color:var(--blue-soft); }
.sec-lead{ font-size:16.5px; color:var(--muted); max-width:560px; margin-top:18px; line-height:1.6; }
.dark-section .sec-lead{ color:var(--muted-on-dark); }
.head-row{ display:flex; align-items:flex-end; justify-content:space-between; gap:40px; flex-wrap:wrap; margin-bottom:56px; }

/* ============ FORM SYSTEM (contact / patient forms) ============ */
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.field{ display:flex; flex-direction:column; gap:8px; }
.field.full{ grid-column:1/-1; }
.field label{ font-size:12.5px; color:rgba(255,255,255,.55); }
.light-section .field label, .paper-section .field label{ color:var(--muted); }
.field input, .field textarea, .field select{
  background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.16); border-radius:12px;
  padding:13px 16px; color:#fff; font-family:var(--font-body); font-size:14.5px; outline:none;
  transition:border-color .2s ease, background .2s ease;
}
.light-section .field input, .light-section .field textarea, .light-section .field select,
.paper-section .field input, .paper-section .field textarea, .paper-section .field select{
  background:var(--white); border-color:var(--hairline); color:var(--ink);
}
.field input:focus, .field textarea:focus, .field select:focus{ border-color:var(--blue-soft); }
.field textarea{ resize:vertical; min-height:100px; }
.consent{ display:flex; align-items:flex-start; gap:10px; font-size:12.5px; color:rgba(255,255,255,.55); line-height:1.5; }
.light-section .consent, .paper-section .consent{ color:var(--muted); }
.consent input{ margin-top:3px; }
.form-foot{ display:flex; align-items:center; justify-content:space-between; gap:20px; margin-top:8px; flex-wrap:wrap; }
.form-note{ font-family:var(--font-mono); font-size:12px; color:rgba(255,255,255,.5); }
.light-section .form-note, .paper-section .form-note{ color:var(--muted); }
.form-success{ display:none; background:rgba(111,107,255,.12); border:1px solid rgba(111,107,255,.35); border-radius:14px; padding:20px 22px; font-size:14.5px; }
.form-success.show{ display:block; }
@media (max-width:860px){ .form-grid{ grid-template-columns:1fr; } }

/* ============ FOOTER ============ */
footer{ background:var(--ink); color:rgba(255,255,255,.6); padding:56px var(--side-pad) 30px; }
.foot-top{ display:flex; justify-content:space-between; align-items:flex-start; gap:40px; flex-wrap:wrap; padding-bottom:40px; border-bottom:1px solid rgba(255,255,255,.1); }
.foot-cols{ display:flex; gap:64px; flex-wrap:wrap; }
.foot-col p{ font-family:var(--font-mono); font-size:11px; text-transform:uppercase; letter-spacing:.06em; color:rgba(255,255,255,.4); margin-bottom:16px; }
.foot-col a{ display:block; font-size:14px; color:rgba(255,255,255,.72); margin-bottom:10px; }
.foot-bottom{ display:flex; justify-content:space-between; align-items:center; gap:16px; flex-wrap:wrap; padding-top:24px; font-size:12.5px; font-family:var(--font-mono); }

/* ============ MISC ============ */
.placeholder-note{
  font-family:var(--font-mono); font-size:12.5px; color:var(--muted); margin-top:6px; display:block;
}