/* ============================================
   Calculateur de Grossesse — Maternity Theme
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&family=Playfair+Display:wght@600;700&display=swap');

/* ---------- CSS Variables ---------- */
:root {
  --pink-50: #fef1f6;
  --pink-100: #fde4ee;
  --pink-200: #fbc8dd;
  --pink-300: #f9a0c3;
  --pink-400: #f472a8;
  --pink-500: #ec4899;
  --pink-600: #db2777;
  --peach-50: #fff7f0;
  --peach-100: #ffedd5;
  --peach-200: #ffd9b3;
  --lavender-50: #f5f3ff;
  --lavender-100: #ede9fe;
  --lavender-200: #ddd6fe;
  --lavender-300: #c4b5fd;
  --mint-50: #f0fdf4;
  --mint-100: #dcfce7;
  --mint-200: #bbf7d0;
  --white: #ffffff;
  --gray-50: #faf9fb;
  --gray-100: #f3f1f5;
  --gray-200: #e8e5ec;
  --gray-300: #d4d0db;
  --gray-400: #a8a2b3;
  --gray-500: #7c7589;
  --gray-600: #5e576b;
  --gray-700: #433d4e;
  --gray-800: #2d2836;
  --gray-900: #1a1523;
  --shadow-sm: 0 1px 3px rgba(219,39,119,.06), 0 1px 2px rgba(219,39,119,.04);
  --shadow-md: 0 4px 12px rgba(219,39,119,.08), 0 2px 4px rgba(219,39,119,.04);
  --shadow-lg: 0 12px 32px rgba(219,39,119,.10), 0 4px 8px rgba(219,39,119,.06);
  --shadow-xl: 0 20px 48px rgba(219,39,119,.12), 0 8px 16px rgba(219,39,119,.06);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  --transition: .25s cubic-bezier(.4,0,.2,1);
}

/* ---------- Reset & Base ---------- */
*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { scroll-behavior:smooth; font-size:16px; }
body {
  font-family:'Nunito',system-ui,-apple-system,sans-serif;
  background: linear-gradient(180deg, var(--pink-50) 0%, var(--white) 40%, var(--lavender-50) 100%);
  color: var(--gray-800);
  line-height:1.7;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
img { max-width:100%; height:auto; display:block; }
a { color:var(--pink-500); text-decoration:none; transition:color var(--transition); }
a:hover { color:var(--pink-600); }

/* ---------- Typography ---------- */
h1,h2,h3,h4 { font-family:'Playfair Display','Nunito',serif; color:var(--gray-900); line-height:1.3; }
h1 { font-size:clamp(1.8rem,4vw,2.8rem); font-weight:700; }
h2 { font-size:clamp(1.4rem,3vw,2rem); font-weight:700; margin-bottom:.6em; }
h3 { font-size:clamp(1.15rem,2.4vw,1.45rem); font-weight:600; margin-bottom:.5em; }
p { margin-bottom:1em; color:var(--gray-600); }

/* ---------- Layout ---------- */
.container { width:100%; max-width:1100px; margin:0 auto; padding:0 20px; }
.section { padding:60px 0; }

/* ---------- Header / Nav ---------- */
.site-header {
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--pink-100);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow-md); }
.nav-inner {
  display:flex; align-items:center; justify-content:space-between;
  height:64px; max-width:1100px; margin:0 auto; padding:0 20px;
}
.nav-logo {
  font-family:'Playfair Display',serif;
  font-size:1.25rem; font-weight:700;
  color:var(--pink-500);
  display:flex; align-items:center; gap:8px;
}
.nav-logo span { font-size:1.4rem; }
.nav-links { display:flex; gap:8px; list-style:none; }
.nav-links a {
  padding:8px 14px; border-radius:var(--radius-full);
  font-size:.88rem; font-weight:600; color:var(--gray-600);
  transition:all var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  background:var(--pink-50); color:var(--pink-600);
}
.nav-hamburger {
  display:none; background:none; border:none; cursor:pointer;
  width:36px; height:36px; position:relative;
}
.nav-hamburger span {
  display:block; width:22px; height:2px; background:var(--gray-700);
  position:absolute; left:7px; transition:all var(--transition);
}
.nav-hamburger span:nth-child(1) { top:11px; }
.nav-hamburger span:nth-child(2) { top:17px; }
.nav-hamburger span:nth-child(3) { top:23px; }
.nav-hamburger.open span:nth-child(1) { transform:rotate(45deg); top:17px; }
.nav-hamburger.open span:nth-child(2) { opacity:0; }
.nav-hamburger.open span:nth-child(3) { transform:rotate(-45deg); top:17px; }

/* ---------- Hero ---------- */
.hero {
  padding:48px 0 36px;
  text-align:center;
  background: linear-gradient(135deg, var(--pink-50) 0%, var(--peach-50) 50%, var(--lavender-50) 100%);
  position:relative;
  overflow:hidden;
}
.hero::before {
  content:''; position:absolute; top:-60%; right:-20%; width:500px; height:500px;
  background:radial-gradient(circle, var(--pink-200) 0%, transparent 70%);
  opacity:.3; pointer-events:none;
}
.hero::after {
  content:''; position:absolute; bottom:-40%; left:-15%; width:400px; height:400px;
  background:radial-gradient(circle, var(--lavender-200) 0%, transparent 70%);
  opacity:.3; pointer-events:none;
}
.hero-content { position:relative; z-index:1; }
.hero h1 { margin-bottom:12px; }
.hero h1 .accent { color:var(--pink-500); }
.hero-subtitle {
  font-size:clamp(1rem,2.2vw,1.2rem); color:var(--gray-500);
  max-width:600px; margin:0 auto 32px;
}

/* ---------- Calculator Card ---------- */
.calc-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: 36px 32px;
  max-width: 520px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
  border: 1px solid var(--pink-100);
}
.calc-card::before {
  content:''; position:absolute; inset:-1px; border-radius:var(--radius-xl);
  background:linear-gradient(135deg, var(--pink-200), var(--lavender-200), var(--peach-200));
  z-index:-1; opacity:.5;
  padding:1px;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}
.calc-card h2 {
  text-align:center; font-size:1.3rem; margin-bottom:24px;
  color:var(--gray-800);
}

/* ---------- Form elements ---------- */
.form-group { margin-bottom:20px; }
.form-group label {
  display:block; font-weight:700; font-size:.9rem;
  color:var(--gray-700); margin-bottom:6px;
}
.form-group input[type="date"],
.form-group input[type="number"],
.form-group select {
  width:100%; padding:14px 16px;
  border:2px solid var(--gray-200);
  border-radius:var(--radius-md);
  font-family:inherit; font-size:1rem;
  color:var(--gray-800);
  background:var(--gray-50);
  transition:all var(--transition);
  outline:none;
}
.form-group input:focus,
.form-group select:focus {
  border-color:var(--pink-400);
  box-shadow:0 0 0 4px rgba(244,114,168,.15);
  background:var(--white);
}
.form-row { display:flex; gap:16px; }
.form-row .form-group { flex:1; }
.form-hint {
  font-size:.8rem; color:var(--gray-400); margin-top:4px;
}

.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:14px 28px;
  border:none; border-radius:var(--radius-full);
  font-family:inherit; font-size:1rem; font-weight:700;
  cursor:pointer; transition:all var(--transition);
  text-decoration:none;
}
.btn-primary {
  background:linear-gradient(135deg, var(--pink-400), var(--pink-500));
  color:var(--white);
  box-shadow:0 4px 16px rgba(236,72,153,.3);
}
.btn-primary:hover {
  transform:translateY(-2px);
  box-shadow:0 8px 24px rgba(236,72,153,.35);
  color:var(--white);
}
.btn-secondary {
  background:var(--white);
  color:var(--pink-500);
  border:2px solid var(--pink-200);
}
.btn-secondary:hover {
  background:var(--pink-50);
  border-color:var(--pink-300);
  color:var(--pink-600);
}
.btn-block { width:100%; }

/* ---------- Results Panel ---------- */
.results-panel {
  display:none;
  margin-top:28px;
  animation: fadeSlideUp .5s ease;
}
.results-panel.visible { display:block; }

@keyframes fadeSlideUp {
  from { opacity:0; transform:translateY(16px); }
  to { opacity:1; transform:translateY(0); }
}

.result-highlight {
  background: linear-gradient(135deg, var(--pink-50), var(--lavender-50));
  border-radius:var(--radius-lg);
  padding:24px;
  text-align:center;
  margin-bottom:20px;
  border:1px solid var(--pink-100);
}
.result-highlight .big-number {
  font-family:'Playfair Display',serif;
  font-size:2.8rem; font-weight:700;
  background:linear-gradient(135deg, var(--pink-500), var(--pink-600));
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  line-height:1.1;
}
.result-highlight .big-label {
  font-size:.95rem; color:var(--gray-500); margin-top:4px;
}

.results-grid {
  display:grid; grid-template-columns:1fr 1fr;
  gap:12px;
}
.result-item {
  background:var(--white);
  border:1px solid var(--gray-200);
  border-radius:var(--radius-md);
  padding:16px;
  text-align:center;
  transition:all var(--transition);
}
.result-item:hover {
  border-color:var(--pink-200);
  box-shadow:var(--shadow-sm);
}
.result-item .ri-icon { font-size:1.5rem; margin-bottom:6px; }
.result-item .ri-value {
  font-family:'Playfair Display',serif;
  font-size:1.4rem; font-weight:700;
  color:var(--gray-900);
}
.result-item .ri-label {
  font-size:.78rem; color:var(--gray-400);
  text-transform:uppercase; letter-spacing:.5px; margin-top:2px;
}

/* ---------- Progress Bar ---------- */
.progress-section { margin-top:20px; }
.progress-label {
  display:flex; justify-content:space-between; align-items:center;
  font-size:.85rem; font-weight:600; color:var(--gray-600);
  margin-bottom:8px;
}
.progress-bar {
  height:12px; background:var(--gray-100);
  border-radius:var(--radius-full); overflow:hidden;
  position:relative;
}
.progress-fill {
  height:100%;
  border-radius:var(--radius-full);
  background:linear-gradient(90deg, var(--pink-300), var(--pink-500), var(--lavender-300));
  background-size:200% 100%;
  animation:shimmer 3s ease-in-out infinite;
  transition:width .8s ease;
}
@keyframes shimmer {
  0%,100% { background-position:0% 50%; }
  50% { background-position:100% 50%; }
}

/* ---------- Trimester Badge ---------- */
.trimester-badge {
  display:inline-flex; align-items:center; gap:6px;
  padding:8px 18px;
  border-radius:var(--radius-full);
  font-weight:700; font-size:.9rem;
  margin-top:12px;
}
.trimester-badge.t1 { background:var(--mint-100); color:#166534; }
.trimester-badge.t2 { background:var(--peach-100); color:#9a3412; }
.trimester-badge.t3 { background:var(--lavender-100); color:#5b21b6; }

/* ---------- Weekly Timeline ---------- */
.timeline { margin-top:40px; }
.timeline h3 { text-align:center; margin-bottom:24px; }
.timeline-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(48px, 1fr));
  gap:6px;
}
.week-cell {
  aspect-ratio:1;
  border-radius:var(--radius-sm);
  display:flex; align-items:center; justify-content:center;
  font-size:.75rem; font-weight:700;
  color:var(--gray-400);
  background:var(--gray-50);
  border:1px solid var(--gray-200);
  transition:all var(--transition);
  cursor:default;
  position:relative;
}
.week-cell.past {
  background:var(--pink-100); color:var(--pink-600);
  border-color:var(--pink-200);
}
.week-cell.current {
  background:linear-gradient(135deg,var(--pink-400),var(--pink-500));
  color:var(--white);
  border-color:var(--pink-400);
  box-shadow:0 0 0 3px rgba(244,114,168,.3);
  transform:scale(1.1);
  z-index:1;
}
.week-cell.future {
  background:var(--gray-50); color:var(--gray-300);
  border-color:var(--gray-100);
}

/* ---------- Info Cards / Feature Cards ---------- */
.features-grid {
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(280px, 1fr));
  gap:24px;
}
.feature-card {
  background:var(--white);
  border:1px solid var(--gray-200);
  border-radius:var(--radius-lg);
  padding:32px 24px;
  text-align:center;
  transition:all var(--transition);
}
.feature-card:hover {
  transform:translateY(-4px);
  box-shadow:var(--shadow-lg);
  border-color:var(--pink-200);
}
.feature-card .fc-icon {
  width:56px; height:56px;
  margin:0 auto 16px;
  border-radius:var(--radius-md);
  display:flex; align-items:center; justify-content:center;
  font-size:1.6rem;
}
.feature-card .fc-icon.pink { background:var(--pink-100); }
.feature-card .fc-icon.lavender { background:var(--lavender-100); }
.feature-card .fc-icon.peach { background:var(--peach-100); }
.feature-card .fc-icon.mint { background:var(--mint-100); }

/* ---------- SEO Content Section ---------- */
.seo-content {
  max-width:800px; margin:0 auto;
  padding:60px 20px;
}
.seo-content h2 {
  margin-top:36px;
  padding-top:24px;
  border-top:1px solid var(--gray-200);
}
.seo-content h2:first-child { border-top:none; padding-top:0; margin-top:0; }
.seo-content ul, .seo-content ol {
  margin:0 0 1em 1.5em; color:var(--gray-600);
}
.seo-content li { margin-bottom:.4em; }
.seo-content strong { color:var(--gray-800); }

/* ---------- FAQ Accordion ---------- */
.faq-section { max-width:800px; margin:0 auto; }
.faq-item {
  border:1px solid var(--gray-200);
  border-radius:var(--radius-md);
  margin-bottom:12px;
  overflow:hidden;
  transition:all var(--transition);
}
.faq-item:hover { border-color:var(--pink-200); }
.faq-question {
  display:flex; justify-content:space-between; align-items:center;
  padding:18px 20px;
  background:var(--white);
  cursor:pointer;
  font-weight:700; font-size:.95rem; color:var(--gray-800);
  border:none; width:100%; text-align:left;
  font-family:inherit;
  transition:background var(--transition);
}
.faq-question:hover { background:var(--pink-50); }
.faq-question .faq-icon {
  font-size:1.2rem; transition:transform var(--transition);
  color:var(--pink-400); flex-shrink:0; margin-left:12px;
}
.faq-item.open .faq-icon { transform:rotate(45deg); }
.faq-answer {
  max-height:0; overflow:hidden;
  transition:max-height .4s ease, padding .4s ease;
}
.faq-item.open .faq-answer {
  max-height:500px;
  padding:0 20px 18px;
}
.faq-answer p { font-size:.92rem; color:var(--gray-600); margin:0; }

/* ---------- Blog Cards ---------- */
.blog-grid {
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(320px, 1fr));
  gap:24px;
}
.blog-card {
  background:var(--white);
  border:1px solid var(--gray-200);
  border-radius:var(--radius-lg);
  overflow:hidden;
  transition:all var(--transition);
  text-decoration:none; color:inherit;
  display:flex; flex-direction:column;
}
.blog-card:hover {
  transform:translateY(-4px);
  box-shadow:var(--shadow-lg);
  border-color:var(--pink-200);
  color:inherit;
}
.blog-card-img {
  height:180px;
  background:linear-gradient(135deg, var(--pink-100), var(--lavender-100));
  display:flex; align-items:center; justify-content:center;
  font-size:3rem;
}
.blog-card-body { padding:20px; flex:1; display:flex; flex-direction:column; }
.blog-card-body h3 {
  font-size:1.05rem; margin-bottom:8px; line-height:1.4;
}
.blog-card-body p {
  font-size:.88rem; color:var(--gray-500); flex:1;
}
.blog-card-tag {
  display:inline-block;
  padding:4px 12px;
  border-radius:var(--radius-full);
  background:var(--pink-50);
  color:var(--pink-500);
  font-size:.75rem; font-weight:700;
  margin-top:12px; align-self:flex-start;
}

/* ---------- Footer ---------- */
.site-footer {
  background:var(--gray-900);
  color:var(--gray-400);
  padding:48px 0 24px;
  margin-top:60px;
}
.footer-grid {
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:40px;
  margin-bottom:36px;
}
.footer-brand {
  font-family:'Playfair Display',serif;
  font-size:1.2rem; font-weight:700;
  color:var(--pink-300);
  margin-bottom:12px;
}
.footer-desc { font-size:.88rem; line-height:1.6; }
.footer-heading {
  font-family:'Nunito',sans-serif;
  font-weight:700; font-size:.85rem;
  color:var(--white);
  text-transform:uppercase;
  letter-spacing:1px;
  margin-bottom:16px;
}
.footer-links { list-style:none; }
.footer-links li { margin-bottom:8px; }
.footer-links a {
  color:var(--gray-400); font-size:.88rem;
  transition:color var(--transition);
}
.footer-links a:hover { color:var(--pink-300); }
.footer-bottom {
  border-top:1px solid var(--gray-700);
  padding-top:20px;
  text-align:center;
  font-size:.82rem;
}
.footer-bottom a { color:var(--pink-300); }

/* ---------- Internal Link Cards ---------- */
.internal-links {
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(220px, 1fr));
  gap:16px;
  margin:32px 0;
}
.internal-link-card {
  display:flex; align-items:center; gap:12px;
  padding:16px 20px;
  background:var(--white);
  border:1px solid var(--gray-200);
  border-radius:var(--radius-md);
  transition:all var(--transition);
  text-decoration:none; color:var(--gray-700);
  font-weight:600; font-size:.92rem;
}
.internal-link-card:hover {
  border-color:var(--pink-300);
  background:var(--pink-50);
  color:var(--pink-600);
  transform:translateX(4px);
}
.internal-link-card .ilc-icon { font-size:1.3rem; }

/* ---------- Conversion Table ---------- */
.conversion-table {
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  border-radius:var(--radius-md);
  overflow:hidden;
  border:1px solid var(--gray-200);
  margin:24px 0;
}
.conversion-table th {
  background:linear-gradient(135deg, var(--pink-400), var(--pink-500));
  color:var(--white);
  padding:12px 16px;
  font-size:.85rem;
  text-transform:uppercase;
  letter-spacing:.5px;
}
.conversion-table td {
  padding:10px 16px;
  border-bottom:1px solid var(--gray-100);
  font-size:.9rem;
  color:var(--gray-700);
}
.conversion-table tr:nth-child(even) td { background:var(--pink-50); }
.conversion-table tr:hover td { background:var(--pink-100); }

/* ---------- Disclaimer ---------- */
.disclaimer {
  background:var(--peach-50);
  border:1px solid var(--peach-200);
  border-radius:var(--radius-md);
  padding:16px 20px;
  font-size:.85rem;
  color:var(--gray-500);
  margin-top:24px;
}
.disclaimer strong { color:var(--gray-700); }

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  padding:12px 0;
  font-size:.85rem;
  color:var(--gray-400);
}
.breadcrumb a { color:var(--gray-500); }
.breadcrumb a:hover { color:var(--pink-500); }
.breadcrumb span { margin:0 6px; }

/* ---------- Responsive ---------- */
@media (max-width:768px) {
  .nav-links { 
    display:none; flex-direction:column; 
    position:absolute; top:64px; left:0; right:0;
    background:var(--white); border-bottom:1px solid var(--gray-200);
    padding:16px 20px;
    box-shadow:var(--shadow-md);
  }
  .nav-links.open { display:flex; }
  .nav-hamburger { display:block; }
  .hero { padding:32px 0 24px; }
  .calc-card { padding:24px 20px; margin:0 8px; }
  .results-grid { grid-template-columns:1fr 1fr; gap:8px; }
  .result-item { padding:12px; }
  .result-item .ri-value { font-size:1.2rem; }
  .form-row { flex-direction:column; gap:0; }
  .features-grid { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; gap:24px; }
  .blog-grid { grid-template-columns:1fr; }
  .timeline-grid { grid-template-columns:repeat(auto-fill, minmax(40px,1fr)); gap:4px; }
  .section { padding:40px 0; }
}
@media (max-width:480px) {
  .results-grid { grid-template-columns:1fr; }
  .internal-links { grid-template-columns:1fr; }
}

/* ---------- Page-specific: Article ---------- */
.article-content {
  max-width:760px;
  margin:0 auto;
  padding:40px 20px 60px;
}
.article-content h1 { margin-bottom:16px; }
.article-meta {
  font-size:.88rem; color:var(--gray-400);
  margin-bottom:32px;
  display:flex; gap:16px; flex-wrap:wrap;
}
.article-content h2 { margin-top:32px; }
.article-content p { font-size:1rem; }

/* ---------- Utilities ---------- */
.text-center { text-align:center; }
.mt-2 { margin-top:16px; }
.mt-4 { margin-top:32px; }
.mb-4 { margin-bottom:32px; }
.hidden { display:none !important; }