/* ==============================
   Variables globales
============================== */
:root {
  --color-primary: #1a73e8;
  --color-secondary: #0ea5e9;
  --color-accent: #f59e0b;
  --color-success: #16a34a;
  --color-danger: #dc2626;

  --color-bg: #ffffff;
  --color-text: #111111;

  --radius: 12px;
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: 1rem;
  --space-4: 2rem;

  --font-title: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --focus-ring: 2px solid var(--color-primary);
}

/* Mode sombre clair */
.theme-dark {
  --color-bg: #111111;
  --color-text: #f5f5f5;
}
.theme-light {
  --color-bg: #ffffff;
  --color-text: #111111;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  padding: env(safe-area-inset-top) env(safe-area-inset-right)
           env(safe-area-inset-bottom) env(safe-area-inset-left);
}

img, svg, video, canvas {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ==============================
   Liens
============================== */
a { color: var(--color-primary); text-decoration: none; }
a:hover, a:focus-visible { text-decoration: underline; }

/* Focus */
:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 2px;
}

/* ==============================
   Layout
============================== */
.container { max-width: 1200px; margin-inline: auto; padding-inline: var(--space-3); }

.grid { display: grid; gap: var(--space-3); }
@media (min-width: 768px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--5 { grid-template-columns: repeat(5, 1fr); }
}

/* ==============================
   Typographie
============================== */
h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-title);
  line-height: 1.2;
  margin: 1.2em 0 .5em;
}
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1rem; }

/* ==============================
   Boutons
============================== */
.btn, button, input[type=submit] {
  display: inline-block;
  border: 0;
  border-radius: var(--radius);
  padding: .7rem 1rem;
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  transition: transform .08s ease, background .2s ease;
  min-height: 44px;
  min-width: 44px;
}
.btn:hover, button:hover, input[type=submit]:hover { background: #1558b0; }
.btn:active, button:active, input[type=submit]:active { transform: scale(.98); }

/* ==============================
   Navigation horizontale
============================== */
.menu-horizontal {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.5rem;
}
.menu-horizontal li { display: inline-block; }
.menu-horizontal a {
  text-decoration: none;
  color: inherit;
  font-weight: 500;
}
.menu-horizontal a:hover,
.menu-horizontal a:focus { text-decoration: underline; }

/* ==============================
   Cartes
============================== */
.card {
  padding: var(--space-3);
  border: 1px solid #e5e7eb;
  border-radius: var(--radius);
  background: var(--color-bg);
  box-shadow: 0 2px 4px rgba(0,0,0,.05);
}
.card__title { margin-top: 0; }

/* ==============================
   Breadcrumbs
============================== */
.breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  padding: 0;
  margin: 0 0 1rem;
}
.breadcrumbs li { font-size: .9rem; }
.breadcrumbs li::after { content: "/"; margin-left: .5rem; opacity: .6; }
.breadcrumbs li:last-child::after { content: ""; }

/* ==============================
   Skip link
============================== */
.skip-link {
  position: absolute;
  left: -9999px;
  width: 1px; height: 1px;
  overflow: hidden;
}
.skip-link:focus {
  left: var(--space-3);
  top: var(--space-3);
  width: auto; height: auto;
  background: #000;
  color: #fff;
  padding: var(--space-2);
  z-index: 1000;
}

/* ==============================
   Formulaires
============================== */
label { display: block; margin-bottom: .25rem; font-weight: 600; }
input, select, textarea {
  width: 100%;
  padding: .6rem;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  background: #fff;
}
.contact-form button { margin-top: 1rem; }
.field-hint { margin: 0.35rem 0 0; font-size: 0.85rem; color: var(--color-text, #4b5563); opacity: 0.75; }

/* ==============================
   Blockquote
============================== */
blockquote {
  font-style: italic;
  margin: 0;
  padding: .5rem 1rem;
  border-left: 4px solid var(--color-primary);
}
.author { margin-top: .5rem; font-weight: 600; }

/* ==============================
   Helpers
============================== */
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }

.visually-hidden {
  position: absolute !important;
  height: 1px; width: 1px;
  overflow: hidden;
  clip: rect(1px,1px,1px,1px);
}

/* ==============================
   Scroll top
============================== */
.scroll-top {
  position: fixed;
  bottom: 1rem;
  right: 1rem;
  display: none;
  justify-content: center;
  align-items: center;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 1.2rem;
  cursor: pointer;
  transition: opacity .3s ease, transform .2s ease;
  z-index: 1000;
}
.scroll-top.show { display: flex; }
.scroll-top:focus-visible { outline: var(--focus-ring); }

/* ==============================
   Animations
============================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==============================
   Motion reduced
============================== */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* ==============================
   Responsive iPhone SE
============================== */
@media (max-width: 375px) {
  body { font-size: 15px; }
  .container { padding-inline: var(--space-2); }
}
.site-footer {
  padding: 2rem 1rem;
  border-top: 1px solid #e5e7eb;
  text-align: center;
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-grid {
  display: grid;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
  }
}

.site-footer .footer-line {
  margin: 0.5rem 0;
}

.site-footer a {
  color: inherit;
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}
/* Hero section */
.hero {
  text-align: center;
  padding: 3rem 1rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  border-radius: var(--radius);
}
.hero h1 { font-size: 2.5rem; margin-bottom: .5rem; }
.hero p { margin: .3rem 0; }
.hero .accent { font-weight: 600; color: var(--color-accent); }

/* Features */
.feature {
  text-align: center;
  padding: 2rem 1rem;
}
.feature .icon {
  font-size: 2rem;
  margin-bottom: .5rem;
}

/* Cartes / pages Applications */
.app-card-link { display: block; color: inherit; text-decoration: none; }
.app-logo { margin: 0 auto .75rem; max-width: 64px; }
.app-logo img { display: block; width: 100%; height: auto; border-radius: 12px; }
.app-icon { font-size: 2.5rem; margin-bottom: .5rem; }
article.application .app-logo { max-width: 96px; }

/* Color variants */
.card-primary { background: #f0f7ff; border-top: 4px solid var(--color-primary); }
.card-secondary { background: #f0fbfd; border-top: 4px solid var(--color-secondary); }
.card-accent { background: #fffaf0; border-top: 4px solid var(--color-accent); }
.card-success { background: #f3fcf6; border-top: 4px solid var(--color-success); }
.card-danger { background: #fff5f5; border-top: 4px solid var(--color-danger); }
.card-neutral { background: #f9fafb; border-top: 4px solid #6b7280; }
/* CTA */
.cta {
  text-align: center;
  margin: 3rem 0;
  padding: 2rem;
  background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
  color: #fff;
  border-radius: var(--radius);
}
.cta h2 { font-size: 2rem; margin-bottom: .5rem; }
.cta p { margin-bottom: 1rem; }
.cta .btn {
  background: #fff;
  color: var(--color-secondary);
  font-weight: 700;
  padding: 1rem 2rem;
  border-radius: var(--radius);
  transition: background .3s ease, color .3s ease;
}
.cta .btn:hover {
  background: var(--color-secondary);
  color: #fff;
}
/* Supprimer affichage des H1/H2/H3 contenant seulement des espaces ou vides */
h1:empty,
h1:empty::before,
h1:empty::after {
  display: none !important;
  visibility: hidden !important;
}

h1:has(:only-child:empty) {
  display: none !important;
}