/* ==========================================
   AIDE NUMÉRIQUE - Stylesheets
   Accessible & Cosy design for seniors
   ========================================== */

/* Color Palette */
:root {
  /* Warm, inviting colors */
  --primary-color: #d4753e;      /* Warm terracotta */
  --primary-dark: #b85f2e;       /* Darker terracotta for hover */
  --secondary-color: #8b6f47;    /* Warm brown */
  --background-light: #faf7f4;   /* Warm off-white */
  --background-white: #ffffff;   /* Pure white */
  --text-dark: #2d2520;          /* Dark warm brown */
  --text-light: #5c5147;         /* Medium gray-brown */
  --border-color: #d4c4b3;       /* Warm beige */
  --accent-color: #6b8e23;       /* Soft olive green */

  /* Typography */
  --font-main: "Segoe UI", "Trebuchet MS", sans-serif;
  --font-size-base: 18px;        /* Larger base for readability */
  --font-size-heading: 2rem;
  --font-size-subheading: 1.5rem;
  --line-height: 1.8;            /* Generous spacing */
  --spacing-unit: 1rem;

  /* Accessibility */
  --focus-color: #ff8c42;        /* Contrasting focus color */
  --gap-between-items: 1.5rem;
}

/* ==========================================
   Global & Base Styles
   ========================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--text-dark);
  background-color: var(--background-light);
  overflow-x: hidden;
}

/* Ensure text is visible during font load */
@font-display: swap;

/* ==========================================
   Typography
   ========================================== */

h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-unit);
  color: var(--primary-color);
  font-weight: 600;
  line-height: 1.2;
}

h2 {
  font-size: var(--font-size-heading);
  margin-bottom: calc(var(--spacing-unit) * 0.75);
  color: var(--text-dark);
  font-weight: 600;
  margin-top: calc(var(--spacing-unit) * 1.5);
}

h3 {
  font-size: var(--font-size-subheading);
  color: var(--secondary-color);
  font-weight: 600;
  margin-bottom: calc(var(--spacing-unit) * 0.5);
}

p {
  margin-bottom: var(--spacing-unit);
  color: var(--text-light);
}

strong,
b {
  color: var(--text-dark);
  font-weight: 600;
}

/* ==========================================
   Layout
   ========================================== */

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--spacing-unit);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
  padding: calc(var(--spacing-unit) * 2) 0;
}

section {
  margin-bottom: calc(var(--spacing-unit) * 2);
}

/* ==========================================
   Header & Navigation
   ========================================== */

.site-header {
  padding: calc(var(--spacing-unit) * 1.5) 0;
  border-bottom: 3px solid var(--primary-color);
  margin-bottom: calc(var(--spacing-unit) * 2);
  background-color: var(--background-white);
}

.site-header h1 {
  margin-bottom: calc(var(--spacing-unit) * 0.5);
  color: var(--primary-color);
}

.lead {
  font-size: 1.15rem;
  color: var(--text-light);
  margin-bottom: var(--spacing-unit);
  line-height: 1.6;
}

.main-nav {
  display: flex;
  gap: var(--spacing-unit);
  flex-wrap: wrap;
  margin-top: var(--spacing-unit);
}

.nav-link {
  display: inline-block;
  padding: calc(var(--spacing-unit) * 0.75) calc(var(--spacing-unit) * 1.5);
  background-color: var(--accent-color);
  color: white;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 1.05rem;
  transition: background-color 0.3s ease, transform 0.2s ease;
  border: 3px solid transparent;
}

.nav-link:hover,
.nav-link:focus {
  background-color: #5a7c20;
  outline: none;
  border-color: var(--focus-color);
}

.nav-link:focus {
  outline: 3px solid var(--focus-color);
  outline-offset: 2px;
}

/* ==========================================
   Cards / Articles
   ========================================== */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--gap-between-items);
  margin: calc(var(--spacing-unit) * 2) 0;
}

.card {
  background-color: var(--background-white);
  padding: calc(var(--spacing-unit) * 1.5);
  border-radius: 10px;
  border-left: 5px solid var(--primary-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: box-shadow 0.3s ease, transform 0.2s ease;
  display: flex;
  flex-direction: column;
}

.card:hover,
.card:focus-within {
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}

.card h3 {
  color: var(--primary-color);
  margin-top: 0;
}

.card p:last-of-type {
  margin-bottom: 0;
  margin-top: auto;
  padding-top: var(--spacing-unit);
}

/* ==========================================
   Buttons
   ========================================== */

.btn {
  display: inline-block;
  padding: calc(var(--spacing-unit) * 0.9) calc(var(--spacing-unit) * 1.8);
  margin-right: calc(var(--spacing-unit) * 0.5);
  margin-bottom: calc(var(--spacing-unit) * 0.5);
  background-color: var(--primary-color);
  color: white;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 600;
  font-size: 1.05rem;
  border: 3px solid transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  vertical-align: middle;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;  /* WCAG touch target size */
  min-width: 48px;
}
.btn.primary {
  background: #0a66c2;
  color: #fff;
}

section h2 {
  margin-top: 24px;
  color: var(--accent);
}


.btn:hover {
  background-color: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(212, 117, 62, 0.3);
  transform: translateY(-2px);
}

.btn:focus {
  outline: 3px solid var(--focus-color);
  outline-offset: 2px;
  border-color: var(--focus-color);
}

.btn:active {
  transform: translateY(0);
}

.btn.secondary {
  background-color: var(--secondary-color);
  color: white;
}

.btn.secondary:hover {
  background-color: #6f5a39;
}

/* ==========================================
   Footer
   ========================================== */

.site-footer {
  padding: calc(var(--spacing-unit) * 1.5) 0;
  border-top: 2px solid var(--border-color);
  background-color: var(--background-white);
  margin-top: auto;
  text-align: center;
  color: var(--text-light);
  font-size: 0.95rem;
}

/* ==========================================
   Print Styles
   ========================================== */

.no-print {
  print-color-adjust: exact;
  -webkit-print-color-adjust: exact;
}

@media print {
  .no-print {
    display: none !important;
  }

  body {
    background-color: white;
    font-size: 16px;
  }

  .container {
    max-width: 100%;
    padding: 0;
  }

  .card {
    page-break-inside: avoid;
    break-inside: avoid;
  }

  a {
    text-decoration: underline;
    color: var(--text-dark);
  }
}

/* ==========================================
   Accessibility Features
   ========================================== */

/* Focus visible for keyboard navigation */
*:focus-visible {
  outline: 3px solid var(--focus-color);
  outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@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;
  }
}

/* High contrast mode support */
@media (prefers-contrast: more) {
  :root {
    --text-dark: #000000;
    --text-light: #333333;
    --border-color: #999999;
  }

  .card {
    border: 2px solid var(--text-dark);
  }
}

/* ==========================================
   Responsive Design
   ========================================== */

@media (max-width: 768px) {
  :root {
    --font-size-base: 16px;
    --font-size-heading: 1.75rem;
    --spacing-unit: 0.9rem;
  }

  .container {
    padding: calc(var(--spacing-unit) * 0.75);
  }

  h1 {
    font-size: 2rem;
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .main-nav {
    flex-direction: column;
  }

  .nav-link,
  .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-base: 16px;
    --font-size-heading: 1.5rem;
  }

  h1 {
    font-size: 1.75rem;
  }

  .site-header {
    padding: var(--spacing-unit) 0;
  }

  main {
    padding: var(--spacing-unit) 0;
  }
}

/* ==========================================
   Link Styles
   ========================================== */

a {
  color: var(--primary-color);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  font-weight: 500;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--primary-dark);
}

a:focus {
  outline: 3px solid var(--focus-color);
  outline-offset: 2px;
}

/* Exclude button links from default link styles */
.btn,
.nav-link {
  text-decoration: none;
  text-decoration-thickness: initial;
  text-underline-offset: initial;
}

.category { margin: 22px 0; }
.cards { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card {
  display:block; padding:14px; border:1px solid #d0d7de; border-radius:14px;
  background:#f6f7f8; color:#111; text-decoration:none;
}
.card:hover { background:#fff; }