/* ============================================================
   Base partagée : reset, typo, boutons, en-tête, pied de page
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-ink);
  background-color: var(--color-paper);
  background-image: var(--bg-atmosphere);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--color-heading);
  font-weight: var(--weight-display);
  line-height: 1.08;
  margin: 0 0 0.5em;
  font-optical-sizing: auto;
  text-wrap: balance;
}
p { margin: 0 0 1rem; color: var(--color-ink-soft); text-wrap: pretty; }
a { color: var(--color-green); text-underline-offset: 3px; }
a:hover { color: var(--color-accent-text); }
img { display: block; max-width: 100%; height: auto; }
button, input, textarea, select { font: inherit; color: inherit; }

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 6px;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  left: var(--space-2);
  top: -100px;
  z-index: 300;
  padding: 0.6rem 1rem;
  background: var(--color-green);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 700;
}
.skip-link:focus { top: var(--space-2); color: #fff; }

.hand {
  font-family: var(--font-hand);
  font-size: var(--text-hand);
  font-weight: 600;
  line-height: 1.1;
  color: var(--color-green-soft);
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-hand);
  font-weight: 700;
  font-size: 1.45rem;
  line-height: 1;
  color: var(--color-accent-text);
  margin-bottom: var(--space-2);
}

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: var(--tap);
  padding: 0.8rem 1.6rem;
  border: 2px solid transparent;
  border-radius: var(--radius-btn);
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 1.02rem;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out-expo),
    box-shadow var(--duration-fast) var(--ease-out-expo),
    background-color var(--duration-fast) ease,
    color var(--duration-fast) ease;
}
.btn svg { width: 1.15em; height: 1.15em; flex: none; }

.btn--primary {
  color: #fff;
  background: var(--color-accent);
  box-shadow: var(--shadow-btn);
}
.btn--primary:hover { color: #fff; background: var(--color-accent-hover); transform: translateY(-2px); }
.btn--primary:active { transform: translateY(1px); box-shadow: var(--shadow-btn-active); }

.btn--ghost {
  color: var(--color-green);
  background: transparent;
  border-color: var(--color-line-strong);
}
.btn--ghost:hover { color: var(--color-green); border-color: var(--color-green); background: var(--color-card); }

.btn--quiet {
  color: var(--color-green);
  background: transparent;
  padding-inline: 0.9rem;
}
.btn--quiet:hover { color: var(--color-accent-text); background: color-mix(in srgb, var(--color-green) 6%, transparent); }

.btn--lg { font-size: 1.12rem; padding: 1rem 2rem; min-height: 56px; }
@media (max-width: 420px) { .btn--lg { font-size: 1.02rem; padding-inline: 1.3rem; } }
.btn--block { width: 100%; }

.btn[disabled], .btn[aria-disabled="true"] { cursor: progress; opacity: 0.85; transform: none; }

.spinner {
  width: 1.1em; height: 1.1em;
  border: 2.5px solid rgba(255, 255, 255, 0.45);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Marque ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--color-heading);
}
.brand__mark { width: 40px; height: 40px; flex: none; }
.brand__sun { fill: var(--brand-sun); }
.brand__peak { fill: var(--brand-peak); }
.brand__ridge { fill: var(--brand-ridge); }
.site-footer .brand__peak { fill: var(--color-on-dark); }
.brand__name {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  line-height: 1;
  letter-spacing: -0.01em;
}
.brand__tag { display: block; font-size: 0.72rem; color: var(--color-ink-mute); margin-top: 3px; }

/* ---------- En-tête du site ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-paper) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 68px;
}
.site-header .btn { padding: 0.6rem 1.1rem; font-size: 0.95rem; min-height: 44px; }
.site-header__nav { display: flex; align-items: center; gap: var(--space-2); }
.site-header__link { display: none; font-weight: 700; text-decoration: none; padding: 0.6rem 0.8rem; border-radius: var(--radius-sm); }
.site-header__link:hover { background: color-mix(in srgb, var(--color-green) 6%, transparent); }

.site-header .btn { white-space: nowrap; }
@media (max-width: 520px) {
  .brand__tag { display: none; }
  .site-header .btn { padding-inline: 0.95rem; font-size: 0.9rem; }
}
@media (max-width: 359px) {
  .btn__long { display: none; }
  .brand__name { font-size: 1.1rem; }
  .brand__mark { width: 32px; height: 32px; }
}
@media (min-width: 768px) {
  .site-header__link { display: inline-block; }
}

/* ---------- Pied de page ---------- */
.site-footer {
  background: var(--color-green-deep);
  color: var(--color-on-dark);
  padding-block: var(--space-7) var(--space-6);
}
.site-footer p, .site-footer a { color: color-mix(in srgb, var(--color-on-dark) 86%, transparent); }
.site-footer a:hover { color: var(--color-accent-soft); }
.site-footer .brand { color: var(--color-on-dark); }
.site-footer__grid {
  display: grid;
  gap: var(--space-5);
}
.site-footer__links { display: flex; flex-wrap: wrap; gap: var(--space-2) var(--space-5); list-style: none; margin: 0; padding: 0; }
.site-footer__links a { display: inline-block; padding-block: 0.4rem; }
.site-footer__legal { font-size: var(--text-sm); border-top: 1px solid color-mix(in srgb, var(--color-on-dark) 16%, transparent); padding-top: var(--space-4); margin-top: var(--space-5); }
.site-footer .hand { color: var(--color-accent-soft); }
@media (min-width: 768px) {
  .site-footer__grid { grid-template-columns: 1.2fr 1fr; align-items: end; }
  .site-footer__links { justify-content: flex-end; }
}

/* ---------- Mouvement réduit ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .spinner { animation: none; border-top-color: rgba(255, 255, 255, 0.45); border-right-color: #fff; }
}