/* =============================================================
   SOFENA — COMPONENTS
   Composants en classes CSS pures. Dépend de sofena-tokens.css.
   Zéro framework, zéro JS requis (sauf interactivité → sofena.js).
   Reconstruit fidèlement les composants React du design system.
   ============================================================= */

/* ===========================================================
   BASE
   =========================================================== */
*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text-primary);
  background: var(--color-bg-light);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

html { scroll-behavior: smooth; }
img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===========================================================
   TYPOGRAPHIE — Classes & éléments natifs
   (presets du DS, remappés sur Volkhov + Poppins)
   =========================================================== */
.h1, h1 {
  font-family: var(--font-heading);
  font-size: var(--text-8xl);      /* 48px */
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
  color: var(--color-text-primary);
  margin: 0;
}
.h2, h2 {
  font-family: var(--font-heading);
  font-size: var(--text-6xl);      /* 42px */
  font-weight: var(--weight-normal);
  line-height: var(--leading-snug);
  color: var(--color-text-primary);
  margin: 0;
}
.h3, h3 {
  font-family: var(--font-ui);
  font-size: var(--text-3xl);      /* 24px */
  font-weight: var(--weight-semibold);
  line-height: 1.25;
  color: var(--color-text-primary);
  margin: 0;
}
.h4, h4 { font-family: var(--font-ui); font-size: var(--text-3xl); font-weight: var(--weight-bold); line-height: var(--leading-tight); margin: 0; }
.h5, h5 { font-family: var(--font-ui); font-size: var(--text-xl); font-weight: var(--weight-bold); line-height: var(--leading-tight); margin: 0; }
.h6, h6 { font-family: var(--font-ui); font-size: var(--text-lg); font-weight: var(--weight-bold); line-height: var(--leading-tight); margin: 0; }

.display {            /* gros titres hero / stats */
  font-family: var(--font-heading);
  font-size: var(--text-9xl);      /* 64px */
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  margin: 0;
}
.eyebrow {            /* petit label au-dessus d'un titre */
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.lead { font-size: var(--text-xl); line-height: var(--leading-normal); color: var(--color-text-secondary); }
p { margin: 0 0 var(--space-8); line-height: var(--leading-relaxed); }
.text-muted { color: var(--color-text-secondary); }
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ===========================================================
   LAYOUT
   =========================================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}
.section { padding-block: var(--section-gap-md); }
.section--sm { padding-block: var(--section-gap-sm); }
.section--lg { padding-block: var(--section-gap-lg); }
.stack { display: flex; flex-direction: column; gap: var(--space-16); }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-12); }
.grid { display: grid; gap: var(--space-24); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 768px) {
  .grid--2, .grid--3 { grid-template-columns: 1fr; }
}

/* ===========================================================
   BUTTON  (cf. Button.tsx)
   =========================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  height: 50px;                 /* medium par défaut */
  min-width: 173px;
  padding: 0 var(--space-8);
  border: none;
  border-radius: var(--radius-button);
  font-family: var(--font-ui);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  appearance: none;
  transform: translateY(0);
  transition:
    background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease,
    box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), filter 0.2s ease;
}
.btn:hover { text-decoration: none; }
.btn:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
.btn:disabled { opacity: 0.48; cursor: not-allowed; box-shadow: none; transform: none; }
.btn__icon { display: inline-flex; align-items: center; line-height: 0; font-size: 1.25em; flex-shrink: 0; }
.btn__icon svg, .btn__icon img { width: 1em; height: 1em; transition: transform 0.2s ease; }
.btn:hover:not(:disabled) .btn__icon svg { transform: translateX(2px); }

/* Tailles */
.btn--sm { height: 40px; min-width: 120px; padding: 0 var(--space-6); border-radius: var(--radius-sm); font-size: var(--text-sm); }
.btn--lg { height: 56px; min-width: 200px; padding: 0 var(--space-12); border-radius: var(--radius-lg); font-size: var(--text-xl); }
.btn--full { width: 100%; }

/* Variantes */
.btn--primary {
  background: var(--gradient-primary);
  color: #fffbfb;
  box-shadow: var(--shadow-lg);
}
.btn--primary:hover:not(:disabled) { transform: translateY(-2px); box-shadow: var(--shadow-xl); filter: brightness(1.05); }
.btn--primary:active:not(:disabled) { transform: translateY(0); box-shadow: var(--shadow-md); filter: brightness(0.95); }

.btn--secondary {
  background: var(--gradient-subtle);
  color: var(--color-text-primary);
  border: 1px solid rgba(71, 155, 254, 0.12);
  box-shadow: var(--shadow-sm);
}
.btn--secondary:hover:not(:disabled) { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: rgba(71, 155, 254, 0.30); }

.btn--outline {
  background: transparent;
  color: var(--color-button-outline-text, var(--color-text-primary));
  border: 2px solid var(--color-border-accent);
}
.btn--outline:hover:not(:disabled) { transform: translateY(-2px); background: var(--color-light-200); border-color: var(--color-primary-gradient-start); color: var(--color-primary-gradient-start); box-shadow: var(--shadow-sm); }
.btn--outline:active:not(:disabled) { transform: translateY(0); background: var(--color-light-300); box-shadow: none; }

.btn--ghost { background: transparent; color: var(--color-text-primary); }
.btn--ghost:hover:not(:disabled) { transform: translateY(-2px); background: var(--color-light-200); color: var(--color-accent); }

.btn--link {
  background: transparent; color: var(--color-accent); border: none;
  height: auto; min-width: 0; padding: 0; overflow: visible;
}
.btn--link::after {
  content: ''; position: absolute; bottom: -2px; left: 0; width: 100%; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform 0.3s ease;
}
.btn--link:hover:not(:disabled) { color: var(--color-hover); }
.btn--link:hover:not(:disabled)::after { transform: scaleX(1); transform-origin: left; }

/* ===========================================================
   CARD
   =========================================================== */
.card {
  background: var(--color-surface-base);
  border-radius: var(--radius-card);
  padding: var(--space-16);
  box-shadow: var(--shadow-card);
}
@media (min-width: 769px) { .card { padding: var(--space-16); } }
.card--lg { padding: var(--space-16) var(--space-16); }
.card--hover { transition: transform 0.2s ease, box-shadow 0.2s ease; }
.card--hover:hover { transform: translateY(-4px); box-shadow: var(--shadow-xl); }
.card--tint { background: var(--color-surface-tint); }
.card--dark { background: var(--color-bg-dark); color: var(--color-text-inverse); }

/* ===========================================================
   INPUT / FIELD  (cf. Input.tsx)
   =========================================================== */
.field { display: flex; flex-direction: column; gap: var(--space-1); }
.field--full { width: 100%; }
.field__label { font-family: var(--font-ui); font-size: var(--text-sm); font-weight: var(--weight-medium); color: var(--color-text-primary); }

.input {
  font-family: var(--font-body);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-light-300);
  background: var(--color-light-100);
  color: var(--color-text-primary);
  padding: var(--space-3) var(--space-4);
  min-height: 40px;
  font-size: var(--text-base);
  box-shadow: var(--shadow-sm);
  outline: none;
  transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}
.input::placeholder { color: var(--color-text-muted); }
.input:hover { border-color: var(--color-primary); box-shadow: var(--shadow-md); }
.input:focus-visible { border-color: var(--color-focus); box-shadow: var(--shadow-md), 0 0 0 3px rgba(71, 155, 254, 0.25); }
.input:disabled { background: var(--color-light-200); color: var(--color-text-secondary); cursor: not-allowed; }
.input--sm { min-height: 32px; padding: var(--space-2) var(--space-3); font-size: var(--text-sm); }
.input--lg { min-height: 48px; padding: var(--space-4) var(--space-5); font-size: var(--text-lg); }
.input--error { border-color: var(--color-error) !important; }
.input--error:focus-visible { box-shadow: 0 0 0 3px rgba(217, 45, 32, 0.25) !important; }
.field__help { margin-top: var(--space-1); font-size: var(--text-sm); font-weight: var(--weight-semibold); line-height: var(--leading-normal); color: var(--color-primary); min-height: 20px; }
.field__help--error { color: var(--color-error); }

textarea.input { min-height: 120px; padding: var(--space-4); resize: vertical; line-height: var(--leading-relaxed); }

/* ===========================================================
   ICON BOX  (cf. IconContainer.tsx) — cadre blanc + glow bleu
   =========================================================== */
.icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: #ffffff;
  width: 60px; height: 60px;           /* md par défaut */
  border-radius: 12px;
  box-shadow:
    0 0 20px rgba(122, 166, 244, 0.35),
    0 0 40px rgba(66, 108, 183, 0.15),
    2px 2px 10px rgba(162, 146, 255, 0.25);
}
.icon-box svg, .icon-box img { width: 36px; height: 36px; }
.icon-box--sm { width: 40px; height: 40px; border-radius: 8px; }
.icon-box--sm svg, .icon-box--sm img { width: 24px; height: 24px; }
.icon-box--lg { width: 80px; height: 80px; border-radius: 16px; }
.icon-box--lg svg, .icon-box--lg img { width: 48px; height: 48px; }
.icon-box--xl { width: 120px; height: 120px; border-radius: 24px; }
.icon-box--xl svg, .icon-box--xl img { width: 72px; height: 72px; }

/* ===========================================================
   NAVBAR  (cf. NavBar.tsx) — sticky + menu mobile
   =========================================================== */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
  padding: var(--space-4) var(--space-12);
  background: var(--color-surface-base);
  border-bottom: 1px solid var(--color-border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow 0.2s ease;
}
.navbar.is-scrolled { box-shadow: var(--shadow-md); }
.navbar__logo { display: inline-flex; align-items: center; font-family: var(--font-heading); font-size: var(--text-3xl); font-weight: var(--weight-bold); color: var(--color-text-primary); }
.navbar__logo img { height: 32px; width: auto; }
.navbar__items { display: flex; align-items: center; gap: var(--space-16); }
.navbar__link { font-family: var(--font-ui); font-size: var(--text-base); font-weight: var(--weight-medium); color: var(--color-text-secondary); text-decoration: none; transition: color 0.15s ease; }
.navbar__link:hover { color: var(--color-text-muted); text-decoration: none; }
.navbar__link.is-active { font-weight: var(--weight-bold); color: var(--color-text-muted); }
.navbar__end { display: flex; align-items: center; gap: var(--space-8); }
.navbar__toggle { display: none; background: none; border: none; cursor: pointer; font-size: 24px; line-height: 1; color: var(--color-text-primary); padding: var(--space-1); }
.navbar__mobile { display: none; }

@media (max-width: 768px) {
  .navbar { padding: var(--space-3) var(--space-8); }
  .navbar__items { display: none; }
  .navbar__end .btn { display: none; }       /* CTA déplacé dans le menu mobile */
  .navbar__toggle { display: inline-flex; align-items: center; justify-content: center; }
  .navbar__mobile {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--color-surface-base);
    border-bottom: 1px solid var(--color-border-subtle);
    padding: var(--space-8);
    flex-direction: column;
    gap: var(--space-6);
    box-shadow: var(--shadow-md);
  }
  .navbar__mobile.is-open { display: flex; }
}

/* ===========================================================
   SECTION HEADER  (cf. SectionHeader.tsx)
   =========================================================== */
.section-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
  text-align: center;
  max-width: 970px;
  margin-inline: auto;
}
.section-header--left { align-items: flex-start; text-align: left; }
.section-header--right { align-items: flex-end; text-align: right; }
.section-header__title { font-family: var(--font-heading); font-size: var(--text-6xl); font-weight: var(--weight-normal); line-height: var(--leading-snug); color: var(--color-text-primary); margin: 0; }
.section-header__desc { font-family: var(--font-ui); font-size: var(--text-base); font-weight: var(--weight-normal); line-height: var(--leading-loose); color: var(--color-text-secondary); margin: 0; }
@media (max-width: 768px) {
  .section-header__title { font-size: var(--text-5xl); }
  .section-header__desc { font-size: var(--text-sm); line-height: 1.6; }
}

/* ===========================================================
   BADGE / TAG
   =========================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-full);
  font-family: var(--font-ui);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  line-height: 1.4;
  background: var(--color-surface-muted);
  color: var(--color-text-secondary);
}
.badge--primary { background: var(--color-surface-tint); color: var(--color-primary); }
.badge--success { background: var(--color-success-bg); color: var(--color-success); }
.badge--error { background: var(--color-error-bg); color: var(--color-error); }
.badge--warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge--info { background: var(--color-info-bg); color: var(--color-info); }

/* ===========================================================
   SCROLL REVEAL  (animé par sofena.js via IntersectionObserver)
   =========================================================== */
/* Masqué UNIQUEMENT si le JS est actif (classe .js posée par le <head>).
   Sans JS → contenu visible : dégradation propre, robuste pour le SEO. */
.js [data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.js [data-reveal].is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .js [data-reveal] { opacity: 1 !important; transform: none !important; transition: none; }
  html { scroll-behavior: auto; }
}