/* Reset léger et bases */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--color-bg, #ffffff);
  color: var(--color-text, #1f2937);
  min-height: 100svh;
  padding-top: var(--header-height, 80px); /* espace pour le header fixe */
  transition: background-color 0.25s ease, color 0.25s ease;
  display: flex;
  flex-direction: column;
}

/* Images fluides */
img, svg, video {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Mise en page commune */
main {
  display: block;
  flex: 1 0 auto;
}

.container {
  max-width: var(--container-max, 1100px);
  margin-inline: auto;
  padding-inline: min(5vw, var(--space-6, 1.5rem));
}

.section {
  padding-block: var(--space-16, 4rem) var(--space-12, 3rem);
}

.hero {
  background: var(--color-surface, #ffffff);
  border-bottom: 1px solid var(--color-border, #efefef);
  box-shadow: inset 0 -6px 0 var(--color-accent-50, #fff4ec);
  padding-block: var(--space-16, 4rem);
}

.hero h2 {
  margin: 0 0 var(--space-2, 0.5rem);
}

.hero p {
  margin: 0;
  max-width: 60ch;
  color: var(--color-muted, #6b7280);
}

/* Footer minimal */
footer {
  background: var(--color-bg, #ffffff);
  border-top: 1px solid var(--color-border, #efefef);
  margin-top: var(--space-16, 4rem);
  padding: var(--space-6, 1.5rem) min(5vw, var(--space-6, 1.5rem));
  color: var(--color-muted, #6b7280);
  text-align: center;
}

/* Accessibilité et confort */
:focus-visible {
  outline: 2px solid var(--color-accent, #ff6b35);
  outline-offset: 2px;
  border-radius: var(--radius-sm, 6px);
}

/* Sélection de texte en orange doux */
::selection {
  background: var(--color-accent-100, #ffe4d6);
  color: var(--color-text, #1f2937);
}

/* Scroll fluide + offset pour header fixe */
html {
  scroll-behavior: smooth;
  color-scheme: light;
}

html[data-theme="dark"] {
  color-scheme: dark;
  color-scheme: light;
}

html[data-theme="dark"] {
  color-scheme: dark;
}

/* Tout élément ciblé par un id laissera la place au header */
[id] {
  scroll-margin-top: calc(var(--header-height, 80px) + 12px);
}

/* Séparateur horizontal discret */
hr {
  border: 0;
  height: 1px;
  background: var(--color-border, #efefef);
  margin: var(--space-8, 2rem) 0;
}

/* Variantes de section */
.section--alt {
  background: var(--color-accent-50, #fff4ec);
  border-top: 1px solid var(--color-border, #efefef);
  border-bottom: 1px solid var(--color-border, #efefef);
}

.lead {
  font-size: 1.125rem;
  color: var(--color-muted, #6b7280);
}

footer {
    background: var(--color-surface);
}

/* Fin: préférences de mouvement */
@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* Sticky footer (hidden at top, visible on scroll) */
.sticky-footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  transform: translateY(100%);
  transition: transform 0.3s ease;
  z-index: 40;
  pointer-events: none; /* prevent blocking clicks when hidden */
}

.sticky-footer.is-visible {
  transform: translateY(0);
  box-shadow: 0 -6px 20px rgba(0, 0, 0, 0.08);
  pointer-events: auto;
}