/* ═══════════════════════════════════════
   GG4ALL — Stylesheet principal
   Design : Clair & moderne (blanc/bleu)
   ═══════════════════════════════════════ */

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

:root {
  --primary: #1a56db;
  --primary-dark: #1340a8;
  --primary-light: #e8effc;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --dark: #111827;
  --gray-900: #1f2937;
  --gray-700: #374151;
  --gray-500: #6b7280;
  --gray-300: #d1d5db;
  --gray-100: #f3f4f6;
  --white: #ffffff;
  --success: #10b981;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1200px;
  --radius: 12px;
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
  --transition: all 0.3s ease;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-main);
  color: var(--gray-700);
  line-height: 1.7;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: var(--primary); transition: var(--transition); }
a:hover { color: var(--primary-dark); }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--dark);
  line-height: 1.2;
  font-weight: 700;
}

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* --- Header / Nav --- */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-100);
  transition: var(--transition);
}

.header.scrolled { box-shadow: var(--shadow); }

.nav {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--max-width); margin: 0 auto; padding: 16px 24px;
}

.logo {
  font-size: 1.6rem; font-weight: 800; color: var(--dark);
  display: flex; align-items: center; gap: 8px;
}

.logo span { color: var(--primary); }

.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a {
  font-size: 0.95rem; font-weight: 500; color: var(--gray-700);
  position: relative; padding: 4px 0;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px;
  background: var(--primary); transition: width 0.3s ease;
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }

.nav-cta {
  background: var(--primary); color: var(--white) !important; padding: 10px 24px;
  border-radius: 8px; font-weight: 600; font-size: 0.9rem;
}
.nav-cta:hover { background: var(--primary-dark); color: var(--white) !important; transform: translateY(-1px); }
.nav-cta::after { display: none !important; }

.burger { display: none; background: none; border: none; cursor: pointer; padding: 4px; }
.burger span {
  display: block; width: 24px; height: 2px; background: var(--dark);
  margin: 5px 0; transition: var(--transition);
}

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 8px; font-weight: 600;
  font-size: 1rem; cursor: pointer; border: none; transition: var(--transition);
}

.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-dark); color: var(--white); transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.btn-secondary { background: var(--white); color: var(--primary); border: 2px solid var(--primary); }
.btn-secondary:hover { background: var(--primary-light); transform: translateY(-2px); }

.btn-accent { background: var(--accent); color: var(--white); }
.btn-accent:hover { background: var(--accent-dark); color: var(--white); transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.btn-lg { padding: 16px 40px; font-size: 1.1rem; }

/* --- Hero --- */
.hero {
  padding: 160px 0 100px;
  background: linear-gradient(135deg, var(--white) 0%, var(--primary-light) 100%);
  position: relative; overflow: hidden;
}

.hero::before {
  content: ''; position: absolute; top: -50%; right: -20%;
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(26,86,219,0.08) 0%, transparent 70%);
}

.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
  align-items: center; position: relative; z-index: 1;
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--white); border: 1px solid var(--gray-300);
  padding: 6px 16px; border-radius: 100px; font-size: 0.85rem;
  color: var(--gray-700); font-weight: 500; margin-bottom: 24px;
}

.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); }

.hero h1 { font-size: 3.2rem; margin-bottom: 24px; letter-spacing: -0.02em; }
.hero h1 .highlight { color: var(--primary); }

.hero p { font-size: 1.2rem; color: var(--gray-500); margin-bottom: 36px; max-width: 520px; }

.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-stats {
  display: flex; gap: 40px; margin-top: 48px;
  padding-top: 32px; border-top: 1px solid var(--gray-300);
}

.hero-stat strong { display: block; font-size: 2rem; color: var(--dark); }
.hero-stat span { font-size: 0.85rem; color: var(--gray-500); }

.hero-visual {
  background: var(--white); border-radius: var(--radius); box-shadow: var(--shadow-xl);
  padding: 32px; position: relative;
}

.hero-visual .mock-dashboard {
  background: var(--gray-100); border-radius: 8px; padding: 24px;
}

.mock-bar {
  display: flex; align-items: center; gap: 8px; margin-bottom: 20px;
}

.mock-dot { width: 10px; height: 10px; border-radius: 50%; }
.mock-dot.red { background: #ef4444; }
.mock-dot.yellow { background: #f59e0b; }
.mock-dot.green { background: #10b981; }

.mock-chart-bars {
  display: flex; align-items: flex-end; gap: 12px; height: 160px; padding-top: 16px;
}

.mock-chart-bar {
  flex: 1; border-radius: 6px 6px 0 0;
  background: linear-gradient(to top, var(--primary), var(--primary-dark));
  position: relative; animation: growUp 1.5s ease-out forwards;
  opacity: 0;
}

.mock-chart-bar:nth-child(1) { height: 40%; animation-delay: 0.1s; }
.mock-chart-bar:nth-child(2) { height: 55%; animation-delay: 0.2s; }
.mock-chart-bar:nth-child(3) { height: 35%; animation-delay: 0.3s; }
.mock-chart-bar:nth-child(4) { height: 70%; animation-delay: 0.4s; }
.mock-chart-bar:nth-child(5) { height: 50%; animation-delay: 0.5s; }
.mock-chart-bar:nth-child(6) { height: 85%; animation-delay: 0.6s; }
.mock-chart-bar:nth-child(7) { height: 65%; animation-delay: 0.7s; }
.mock-chart-bar:nth-child(8) { height: 95%; animation-delay: 0.8s; }

@keyframes growUp { from { opacity:0; transform: scaleY(0); } to { opacity:1; transform: scaleY(1); } }

.mock-stats-row {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 16px;
}

.mock-stat-card {
  background: var(--white); border-radius: 8px; padding: 16px;
  text-align: center;
}

.mock-stat-card .number { font-size: 1.5rem; font-weight: 700; color: var(--primary); }
.mock-stat-card .label { font-size: 0.75rem; color: var(--gray-500); margin-top: 4px; }

/* --- Sections --- */
.section { padding: 100px 0; }
.section-alt { background: var(--gray-100); }

.section-header {
  text-align: center; max-width: 640px; margin: 0 auto 60px;
}

.section-header .overline {
  font-size: 0.85rem; font-weight: 600; color: var(--primary);
  text-transform: uppercase; letter-spacing: 2px; margin-bottom: 12px;
}

.section-header h2 { font-size: 2.4rem; margin-bottom: 16px; }
.section-header p { font-size: 1.1rem; color: var(--gray-500); }

/* --- Services Cards --- */
.services-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}

.service-card {
  background: var(--white); border-radius: var(--radius); padding: 40px 32px;
  border: 1px solid var(--gray-100); transition: var(--transition);
  position: relative; overflow: hidden;
}

.service-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-xl); border-color: var(--primary-light); }

.service-card .icon {
  width: 56px; height: 56px; border-radius: 12px;
  background: var(--primary-light); display: flex; align-items: center;
  justify-content: center; margin-bottom: 24px; font-size: 1.5rem;
}

.service-card h3 { font-size: 1.3rem; margin-bottom: 12px; }
.service-card p { color: var(--gray-500); margin-bottom: 20px; }

.service-card .features {
  list-style: none; display: flex; flex-direction: column; gap: 8px;
}

.service-card .features li {
  font-size: 0.9rem; color: var(--gray-700); display: flex; align-items: center; gap: 8px;
}

.service-card .features li::before {
  content: '\2713'; color: var(--success); font-weight: 700;
}

/* --- How it works --- */
.steps-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
  position: relative;
}

.steps-grid::before {
  content: ''; position: absolute; top: 40px; left: 15%; right: 15%;
  height: 2px; background: var(--gray-300);
}

.step {
  text-align: center; position: relative; z-index: 1;
}

.step-number {
  width: 80px; height: 80px; border-radius: 50%;
  background: var(--primary); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; font-weight: 700; margin: 0 auto 20px;
  box-shadow: 0 0 0 8px var(--primary-light);
}

.step h3 { font-size: 1.1rem; margin-bottom: 8px; }
.step p { font-size: 0.9rem; color: var(--gray-500); }

/* --- Pricing --- */
.pricing-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
  align-items: start;
}

.pricing-card {
  background: var(--white); border-radius: var(--radius);
  padding: 40px 32px; border: 2px solid var(--gray-100);
  transition: var(--transition); position: relative;
}

.pricing-card.featured {
  border-color: var(--primary); transform: scale(1.05);
  box-shadow: var(--shadow-xl);
}

.pricing-card.featured .pricing-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--primary); color: var(--white); padding: 4px 20px;
  border-radius: 100px; font-size: 0.8rem; font-weight: 600;
}

.pricing-card:hover { border-color: var(--primary); box-shadow: var(--shadow-xl); }

.pricing-card h3 { font-size: 1.3rem; margin-bottom: 8px; }
.pricing-card .price { font-size: 2.8rem; font-weight: 800; color: var(--dark); margin: 16px 0 4px; }
.pricing-card .price span { font-size: 1rem; font-weight: 400; color: var(--gray-500); }
.pricing-card .price-desc { font-size: 0.9rem; color: var(--gray-500); margin-bottom: 24px; }

.pricing-card .pricing-features {
  list-style: none; display: flex; flex-direction: column; gap: 12px;
  margin-bottom: 32px; padding-bottom: 32px; border-bottom: 1px solid var(--gray-100);
}

.pricing-card .pricing-features li {
  font-size: 0.95rem; display: flex; align-items: center; gap: 10px;
}

.pricing-card .pricing-features li::before {
  content: '\2713'; color: var(--success); font-weight: 700; font-size: 1.1rem;
}

.pricing-card .btn { width: 100%; justify-content: center; }

/* --- Testimonials --- */
.testimonials-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}

.testimonial-card {
  background: var(--white); border-radius: var(--radius); padding: 32px;
  border: 1px solid var(--gray-100); transition: var(--transition);
}

.testimonial-card:hover { box-shadow: var(--shadow-lg); }

.stars { color: var(--accent); font-size: 1.1rem; margin-bottom: 16px; letter-spacing: 2px; }

.testimonial-card p { font-style: italic; color: var(--gray-700); margin-bottom: 20px; font-size: 0.95rem; }

.testimonial-author {
  display: flex; align-items: center; gap: 12px;
}

.testimonial-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary-light); display: flex; align-items: center;
  justify-content: center; font-weight: 700; color: var(--primary); font-size: 1rem;
}

.testimonial-author strong { display: block; font-size: 0.95rem; color: var(--dark); }
.testimonial-author span { font-size: 0.8rem; color: var(--gray-500); }

/* --- FAQ --- */
.faq-list { max-width: 760px; margin: 0 auto; }

.faq-item {
  border-bottom: 1px solid var(--gray-100); overflow: hidden;
}

.faq-question {
  display: flex; justify-content: space-between; align-items: center;
  padding: 24px 0; cursor: pointer; width: 100%;
  background: none; border: none; text-align: left;
  font-size: 1.1rem; font-weight: 600; color: var(--dark);
  font-family: var(--font-main);
}

.faq-question .arrow { transition: transform 0.3s ease; font-size: 1.2rem; color: var(--primary); }
.faq-item.open .faq-question .arrow { transform: rotate(180deg); }

.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer { max-height: 300px; padding-bottom: 24px; }
.faq-answer p { color: var(--gray-500); line-height: 1.8; }

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 80px 0; text-align: center; color: var(--white);
}

.cta-section h2 { color: var(--white); font-size: 2.4rem; margin-bottom: 16px; }
.cta-section p { color: rgba(255,255,255,0.8); font-size: 1.1rem; margin-bottom: 36px; max-width: 560px; margin-left: auto; margin-right: auto; }

.cta-section .btn-accent { font-size: 1.1rem; padding: 16px 40px; }

/* --- Footer --- */
.footer {
  background: var(--dark); color: var(--gray-300); padding: 60px 0 30px;
}

.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo { margin-bottom: 16px; }
.footer-brand .logo span { color: var(--primary); }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; color: var(--gray-500); max-width: 300px; }

.footer h4 { color: var(--white); font-size: 1rem; margin-bottom: 20px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: var(--gray-500); font-size: 0.9rem; }
.footer-links a:hover { color: var(--white); }

.footer-bottom {
  border-top: 1px solid var(--gray-700); padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.85rem; color: var(--gray-500);
}

/* --- Contact Page --- */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
}

.contact-info-card {
  display: flex; gap: 16px; margin-bottom: 32px;
}

.contact-info-card .icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--primary-light); display: flex; align-items: center;
  justify-content: center; font-size: 1.2rem; flex-shrink: 0;
}

.contact-info-card h4 { font-size: 1rem; margin-bottom: 4px; }
.contact-info-card p { color: var(--gray-500); font-size: 0.95rem; }

.contact-form { display: flex; flex-direction: column; gap: 20px; }

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-weight: 600; font-size: 0.9rem; color: var(--dark); }

.form-group input, .form-group select, .form-group textarea {
  padding: 12px 16px; border: 2px solid var(--gray-100); border-radius: 8px;
  font-family: var(--font-main); font-size: 1rem; color: var(--dark);
  transition: var(--transition); background: var(--white);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(26,86,219,0.1);
}

.form-group textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* --- Blog --- */
.blog-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}

.blog-card {
  background: var(--white); border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--gray-100);
  transition: var(--transition);
}

.blog-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-xl); }

.blog-card-img {
  height: 200px; background: linear-gradient(135deg, var(--primary-light), var(--primary));
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem; color: var(--white);
}

.blog-card-body { padding: 24px; }
.blog-card-meta {
  display: flex; gap: 16px; font-size: 0.8rem; color: var(--gray-500);
  margin-bottom: 12px;
}

.blog-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.blog-card h3 a { color: var(--dark); }
.blog-card h3 a:hover { color: var(--primary); }
.blog-card p { font-size: 0.9rem; color: var(--gray-500); margin-bottom: 16px; }

.blog-card .read-more {
  font-weight: 600; font-size: 0.9rem; color: var(--primary);
  display: inline-flex; align-items: center; gap: 4px;
}

/* --- Blog Article --- */
.article-header {
  padding: 140px 0 60px;
  background: linear-gradient(135deg, var(--white) 0%, var(--primary-light) 100%);
}

.article-header .overline {
  font-size: 0.85rem; font-weight: 600; color: var(--primary);
  text-transform: uppercase; letter-spacing: 2px; margin-bottom: 12px;
}

.article-header h1 { font-size: 2.6rem; max-width: 760px; margin-bottom: 20px; }

.article-meta {
  display: flex; gap: 24px; font-size: 0.9rem; color: var(--gray-500);
}

.article-content {
  max-width: 760px; margin: 0 auto; padding: 60px 24px;
}

.article-content h2 { font-size: 1.6rem; margin: 48px 0 16px; }
.article-content h3 { font-size: 1.3rem; margin: 32px 0 12px; }
.article-content p { margin-bottom: 20px; font-size: 1.05rem; }
.article-content ul, .article-content ol { margin: 0 0 20px 24px; }
.article-content li { margin-bottom: 8px; }

.article-content blockquote {
  border-left: 4px solid var(--primary);
  padding: 16px 24px; margin: 24px 0;
  background: var(--primary-light); border-radius: 0 8px 8px 0;
  font-style: italic; color: var(--gray-700);
}

/* --- About page --- */
.about-hero {
  padding: 140px 0 60px;
  background: linear-gradient(135deg, var(--white) 0%, var(--primary-light) 100%);
}

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }

.about-values {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}

.value-card {
  text-align: center; padding: 32px 24px;
  background: var(--white); border-radius: var(--radius);
  border: 1px solid var(--gray-100);
}

.value-card .icon-large {
  font-size: 2.5rem; margin-bottom: 16px;
}

.value-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.value-card p { font-size: 0.9rem; color: var(--gray-500); }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .hero h1 { font-size: 2.4rem; }
  .services-grid, .pricing-grid, .testimonials-grid, .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-card.featured { transform: scale(1); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid::before { display: none; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .hero-grid, .contact-grid, .about-grid { grid-template-columns: 1fr; }
  .hero { padding: 120px 0 60px; }
  .hero h1 { font-size: 2rem; }
  .hero-visual { display: none; }
  .section { padding: 60px 0; }
  .section-header h2 { font-size: 1.8rem; }

  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--white); padding: 24px; gap: 16px;
    box-shadow: var(--shadow-lg);
  }
  .burger { display: block; }

  .services-grid, .pricing-grid, .testimonials-grid, .blog-grid,
  .about-values, .steps-grid { grid-template-columns: 1fr; }

  .hero-stats { flex-direction: column; gap: 16px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}

/* --- Page header generic --- */
.page-header {
  padding: 140px 0 60px;
  background: linear-gradient(135deg, var(--white) 0%, var(--primary-light) 100%);
  text-align: center;
}

.page-header h1 { font-size: 2.8rem; margin-bottom: 16px; }
.page-header p { font-size: 1.1rem; color: var(--gray-500); max-width: 560px; margin: 0 auto; }

/* --- Utilities --- */
.text-center { text-align: center; }
.mb-16 { margin-bottom: 16px; }
.mt-32 { margin-top: 32px; }