/* =========================================================================
   ANTHASMA NATUROPATHIE — Design System
   Warm, organic, premium. Soft humanist sans. Light mode.
   ========================================================================= */

:root {
  /* --- Palette : crème, sauge, argile, sable, olive --- */
  --paper:        #F4EEE2;   /* fond principal, papier chaud  */
  --paper-deep:   #EBE2D1;   /* sections alternées            */
  --ivory:        #FBF7EF;   /* cartes, surfaces claires      */
  --sand:         #E4D7BF;   /* sable, séparateurs doux       */

  --sage:         #8C9A7B;   /* sauge feutrée                 */
  --sage-deep:    #5E6B50;   /* sauge profonde, boutons/texte */
  --sage-tint:    #DDE2D2;   /* sauge très claire, fonds      */
  --olive:        #6B6F47;   /* olive clair                   */

  --clay:         #B9805F;   /* argile / terracotta douce     */
  --clay-soft:    #D7B49B;   /* argile claire                 */
  --clay-tint:    #EFDFD0;   /* argile très claire, fonds     */

  --ink:          #33342C;   /* texte principal, presque noir chaud */
  --ink-soft:     #5C5D51;   /* texte secondaire              */
  --ink-faint:    #8A8A7C;   /* légendes, méta                */

  --line:         rgba(51, 52, 44, 0.12);
  --line-soft:    rgba(51, 52, 44, 0.07);

  --shadow-sm:    0 1px 2px rgba(51,52,44,.04), 0 4px 16px rgba(51,52,44,.05);
  --shadow-md:    0 4px 14px rgba(51,52,44,.06), 0 18px 50px rgba(51,52,44,.09);
  --shadow-lg:    0 10px 30px rgba(51,52,44,.08), 0 40px 90px rgba(51,52,44,.13);

  /* --- Typographie --- */
  --font-display: "Hanken Grotesk", -apple-system, system-ui, sans-serif;
  --font-body:    "Mulish", -apple-system, system-ui, sans-serif;

  /* --- Rythme --- */
  --container:    1240px;
  --container-narrow: 880px;
  --pad-x:        clamp(1.4rem, 5vw, 4rem);
  --section-y:    clamp(5rem, 10vw, 9rem);
  --radius-lg:    26px;
  --radius-md:    18px;
  --radius-sm:    12px;
  --header-h:     148px;

  --ease:         cubic-bezier(.22, .61, .36, 1);
}

/* ----------------------------------------------------------------- Reset */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.72;
  font-weight: 400;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* --------------------------------------------------------------- Layout */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--pad-x); }
.narrow    { max-width: var(--container-narrow); }
.section   { padding-block: var(--section-y); }
.bg-deep   { background: var(--paper-deep); }
.bg-sage   { background: var(--sage-tint); }
.bg-ink    { background: #2C2D26; color: var(--paper); }

/* ------------------------------------------------------------ Typography */
.eyebrow {
  font-family: var(--font-display);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--clay);
  display: inline-flex;
  align-items: center;
  gap: .7rem;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 1px;
  background: var(--clay);
  opacity: .6;
}
.eyebrow.center::before { display: none; }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 400; line-height: 1.08; letter-spacing: -.02em; color: var(--ink); }

.display {
  font-size: clamp(2.7rem, 5.6vw, 4.6rem);
  font-weight: 300;
  line-height: 1.04;
  letter-spacing: -.025em;
}
h2.title {
  font-size: clamp(2rem, 3.7vw, 3.1rem);
  font-weight: 300;
  letter-spacing: -.022em;
}
h3.sub { font-size: clamp(1.3rem, 2vw, 1.6rem); font-weight: 500; letter-spacing: -.01em; }

.lead {
  font-size: clamp(1.12rem, 1.55vw, 1.32rem);
  line-height: 1.65;
  color: var(--ink-soft);
  font-weight: 400;
}
.muted { color: var(--ink-soft); }
.faint { color: var(--ink-faint); }
em.serif { font-style: italic; }
.accent  { color: var(--clay); }

/* ---------------------------------------------------------------- Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .6rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .01em;
  padding: .95rem 1.7rem;
  border-radius: 100px;
  transition: transform .4s var(--ease), background .3s var(--ease), color .3s var(--ease), box-shadow .4s var(--ease), border-color .3s var(--ease);
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; }
.btn-primary { background: var(--sage-deep); color: var(--ivory); box-shadow: 0 6px 18px rgba(94,107,80,.28); }
.btn-primary:hover { background: #50603F; transform: translateY(-2px); box-shadow: 0 12px 28px rgba(94,107,80,.34); }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--sage-deep); color: var(--sage-deep); transform: translateY(-2px); }
.btn-clay { background: var(--clay); color: var(--ivory); box-shadow: 0 6px 18px rgba(185,128,95,.3); }
.btn-clay:hover { background: #A87053; transform: translateY(-2px); }
.btn-light { background: var(--ivory); color: var(--ink); }
.btn-light:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.link-arrow {
  font-family: var(--font-display);
  font-weight: 600; font-size: .95rem;
  color: var(--sage-deep);
  display: inline-flex; align-items: center; gap: .5rem;
  transition: gap .35s var(--ease), color .3s;
}
.link-arrow svg { width: 16px; height: 16px; transition: transform .35s var(--ease); }
.link-arrow:hover { gap: .8rem; color: var(--clay); }

/* ----------------------------------------------------------- Image slots */
image-slot {
  --is-bg: var(--sand);
  background: var(--clay-tint);
  color: var(--ink-faint);
  font-family: var(--font-display);
  box-shadow: var(--shadow-md);
}

/* ------------------------------------------------------------- Reveal anim */
/* Gated by html.js so content is fully visible if JS never runs (SEO, no-JS). */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 1s var(--ease), transform 1s var(--ease);
  will-change: opacity, transform;
}
html.js [data-reveal].in { opacity: 1; transform: none; }
html.js [data-reveal][data-delay="1"] { transition-delay: .09s; }
html.js [data-reveal][data-delay="2"] { transition-delay: .18s; }
html.js [data-reveal][data-delay="3"] { transition-delay: .27s; }
html.js [data-reveal][data-delay="4"] { transition-delay: .36s; }
@media (prefers-reduced-motion: reduce) {
  html.js [data-reveal] { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}