/* ═══════════════════════════════════════════════════════════
   Guide Aspirateurs Robots — Design unique
   Palette : Teal profond + Ambre chaud + Gris ardoise
   Typo : Space Grotesk (titres) + Inter (corps)
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600&display=swap');

/* ── Reset & Base ──────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --teal-900: #134e4a;
  --teal-700: #0f766e;
  --teal-600: #0d9488;
  --teal-500: #14b8a6;
  --teal-100: #ccfbf1;
  --teal-50: #f0fdfa;
  --amber-500: #f59e0b;
  --amber-400: #fbbf24;
  --amber-100: #fef3c7;
  --slate-900: #0f172a;
  --slate-700: #334155;
  --slate-500: #64748b;
  --slate-300: #cbd5e1;
  --slate-100: #f1f5f9;
  --white: #ffffff;
  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --max-width: 1120px;
  --radius: 12px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--slate-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img, svg {
  max-width: 100%;
  display: block;
}

a {
  color: var(--teal-700);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--teal-500);
}

/* ── Typography ────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--slate-900);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 700; }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); font-weight: 600; margin-top: 2.5rem; margin-bottom: 1rem; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); font-weight: 600; margin-top: 2rem; margin-bottom: 0.75rem; }

p {
  margin-bottom: 1.25rem;
}

ul, ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.4rem;
}

/* ── Layout ────────────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Header & Nav ──────────────────────────────────────── */
.site-header {
  background: var(--teal-900);
  color: var(--white);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.site-logo {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-logo:hover {
  color: var(--teal-100);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--amber-400);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
  padding: 0;
  margin: 0;
}

.nav-links a {
  color: var(--teal-100);
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  background: rgba(255,255,255,0.12);
  color: var(--white);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.25rem;
}

/* ── Hero Section ──────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--teal-900) 0%, var(--teal-700) 100%);
  color: var(--white);
  padding: 5rem 1.5rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero h1 {
  color: var(--white);
  margin-bottom: 1.25rem;
  position: relative;
}

.hero p {
  font-size: 1.15rem;
  color: var(--teal-100);
  max-width: 640px;
  margin: 0 auto 2rem;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(251, 191, 36, 0.2);
  color: var(--amber-400);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  position: relative;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  border-radius: 999px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--amber-400);
  color: var(--slate-900);
}

.btn-primary:hover {
  background: var(--amber-500);
  color: var(--slate-900);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(251, 191, 36, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--teal-700);
  border: 2px solid var(--teal-600);
}

.btn-outline:hover {
  background: var(--teal-50);
  color: var(--teal-900);
}

/* ── Article Cards Grid ────────────────────────────────── */
.section {
  padding: 4rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 0.5rem;
}

.section-subtitle {
  text-align: center;
  color: var(--slate-500);
  font-size: 1.05rem;
  margin-bottom: 3rem;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--white);
  border: 1px solid var(--slate-100);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--teal-100);
}

.card-thumb {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  position: relative;
}

.card-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-tag {
  display: inline-block;
  background: var(--teal-50);
  color: var(--teal-700);
  padding: 0.2rem 0.7rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--slate-900);
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.card-excerpt {
  color: var(--slate-500);
  font-size: 0.9rem;
  line-height: 1.6;
  flex: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--teal-700);
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: 1rem;
  transition: gap var(--transition);
}

.card-link:hover {
  gap: 0.6rem;
}

/* ── Breadcrumb ────────────────────────────────────────── */
.breadcrumb {
  padding: 1rem 0;
  font-size: 0.85rem;
  color: var(--slate-500);
}

.breadcrumb a {
  color: var(--teal-600);
}

.breadcrumb span {
  margin: 0 0.4rem;
  color: var(--slate-300);
}

/* ── Article Page ──────────────────────────────────────── */
.article-header {
  background: linear-gradient(135deg, var(--teal-900) 0%, var(--teal-700) 100%);
  color: var(--white);
  padding: 3.5rem 1.5rem 3rem;
  text-align: center;
}

.article-header h1 {
  color: var(--white);
  max-width: 800px;
  margin: 0 auto 1rem;
}

.article-meta {
  color: var(--teal-100);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.article-meta span {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.article-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
  font-size: 1.05rem;
}

.article-content h2 {
  padding-top: 1rem;
  border-top: 2px solid var(--slate-100);
}

.article-content h2:first-of-type {
  border-top: none;
  padding-top: 0;
}

.article-content blockquote {
  border-left: 4px solid var(--teal-500);
  background: var(--teal-50);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: italic;
  color: var(--teal-900);
}

.article-content strong {
  color: var(--slate-900);
}

.info-box {
  background: var(--amber-100);
  border-left: 4px solid var(--amber-500);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.info-box strong {
  color: var(--slate-900);
}

.related-articles {
  background: var(--slate-100);
  padding: 3rem 0;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.related-card {
  background: var(--white);
  padding: 1.25rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.related-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.related-card h4 {
  font-size: 1rem;
  margin-bottom: 0.4rem;
}

.related-card p {
  font-size: 0.85rem;
  color: var(--slate-500);
  margin: 0;
}

/* ── Features / Stats Row ──────────────────────────────── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  padding: 3rem 0;
}

.stat-card {
  text-align: center;
  padding: 2rem 1rem;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--slate-100);
}

.stat-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--teal-700);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--slate-500);
  margin-top: 0.25rem;
}

/* ── Footer ────────────────────────────────────────────── */
.site-footer {
  background: var(--slate-900);
  color: var(--slate-300);
  padding: 3rem 1.5rem 2rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.footer-desc {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--slate-500);
}

.footer-heading {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--white);
  margin-bottom: 1rem;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--slate-500);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--teal-500);
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  text-align: center;
  font-size: 0.8rem;
  color: var(--slate-500);
}

/* ── Mobile ────────────────────────────────────────────── */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--teal-900);
    flex-direction: column;
    padding: 1rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    box-shadow: var(--shadow-lg);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 0.75rem 1rem;
  }

  .hero {
    padding: 3.5rem 1.5rem 3rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

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

  .article-content {
    padding: 2rem 1rem 3rem;
  }
}

@media (max-width: 480px) {
  h1 { font-size: 1.75rem; }
  .hero { padding: 2.5rem 1rem 2rem; }
  .section { padding: 2.5rem 0; }
}