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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Roboto", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #222;
  background: #f5f7fb;
  line-height: 1.6;
}

/* Variables simples */
:root {
  --color-primary: #1f4f8b;
  --color-primary-light: #2f6ab8;
  --color-accent: #f59e0b;
  --color-bg: #f5f7fb;
  --color-card: #ffffff;
  --color-border: #e2e8f0;
  --shadow-soft: 0 18px 35px rgba(15, 23, 42, 0.08);
  --radius-lg: 18px;
  --radius-xl: 24px;
  --transition-fast: 0.25s ease;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

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

/* Container */
.container {
  width: min(1120px, 100% - 2.5rem);
  margin: 0 auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245, 247, 251, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 0;
  gap: 1.5rem;
}

.logo img {
  max-height: 46px;
  display: block;
}

/* Navigation */
.main-nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.main-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  padding-bottom: 0.2rem;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: width var(--transition-fast);
}

.main-nav a:hover::after {
  width: 100%;
}

/* Burger (mobile) */
.nav-toggle {
  display: none;
}

.nav-toggle-label {
  display: none;
  cursor: pointer;
  width: 32px;
  height: 24px;
  position: relative;
}

.nav-toggle-label span,
.nav-toggle-label span::before,
.nav-toggle-label span::after {
  position: absolute;
  left: 0;
  right: 0;
  height: 3px;
  border-radius: 999px;
  background: #0f172a;
  transition: transform var(--transition-fast), opacity var(--transition-fast), top var(--transition-fast), bottom var(--transition-fast);
}

.nav-toggle-label span {
  top: 50%;
  transform: translateY(-50%);
}

.nav-toggle-label span::before,
.nav-toggle-label span::after {
  content: "";
}

.nav-toggle-label span::before {
  top: -8px;
}

.nav-toggle-label span::after {
  bottom: -8px;
}

/* Hero */
.hero {
  padding: 3.5rem 0 2.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  gap: 2.5rem;
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(2rem, 3vw, 2.6rem);
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 0.4rem;
}

.hero-text h2 {
  font-size: clamp(1.3rem, 2.4vw, 1.6rem);
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}

.hero-text .lead {
  color: #1e293b;
  font-weight: 400;
  margin-bottom: 1rem;
}

.hero-text .highlight {
  margin: 1rem 0;
  font-weight: 500;
  color: #111827;
}

.hero-text .highlight a {
  font-weight: 600;
  color: var(--color-accent);
}

.hero-text .highlight a:hover {
  color: #f97316;
}

.hero-text p {
  margin-bottom: 0.8rem;
}

/* Hero image */
.hero-image {
  position: relative;
}

.hero-image::before {
  content: "";
  position: absolute;
  inset: -10%;
  background: radial-gradient(circle at top left, rgba(37, 99, 235, 0.28), transparent 60%);
  z-index: -1;
}

.hero-image img {
  width: 100%;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
  object-fit: cover;
}

/* Contact section */
.contact-section {
  padding: 1.5rem 0 2.5rem;
}

.contact-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.contact-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--color-border);
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.04);
}

.contact-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
  color: #111827;
}

.contact-card p {
  font-size: 0.96rem;
  color: #4b5563;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.7rem;
  padding: 0.55rem 1.25rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: #fff;
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: 0 12px 25px rgba(37, 99, 235, 0.35);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(37, 99, 235, 0.45);
  opacity: 0.96;
}

/* Services */
.services-section {
  padding: 2.5rem 0 3rem;
}

.section-title {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: #0f172a;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
}

.service-box {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.4rem;
  border: 1px solid var(--color-border);
  box-shadow: 0 18px 35px rgba(15, 23, 42, 0.04);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.service-box:hover {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.35);
  box-shadow: var(--shadow-soft);
}

.service-box h3 {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
  color: #111827;
}

.service-box p {
  font-size: 0.94rem;
  color: #4b5563;
  margin-bottom: 1rem;
}

.service-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.service-link::after {
  content: "→";
  font-size: 0.9rem;
  transition: transform var(--transition-fast);
}

.service-link:hover::after {
  transform: translateX(2px);
}

/* Partner */
.partners-section {
  padding: 2.5rem 0 3.5rem;
}

.partners-section p {
  margin-bottom: 0.8rem;
}

.partners-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.6rem 1.5rem;
  margin-top: 0.8rem;
}

.partners-list a {
  display: inline-flex;
  align-items: center;
  font-size: 0.95rem;
}

.partners-list a::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  margin-right: 0.5rem;
  background: var(--color-primary);
  opacity: 0.8;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.2rem 0;
  background: #f1f5f9;
  font-size: 0.9rem;
  color: #6b7280;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-inner a {
  font-weight: 500;
}

/* Responsive */
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .services-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .header-inner {
    padding: 0.7rem 0;
  }

  .nav-toggle-label {
    display: block;
  }

  .main-nav {
    position: absolute;
    inset: 100% 0 auto 0;
    background: rgba(248, 250, 252, 0.98);
    border-bottom: 1px solid rgba(148, 163, 184, 0.3);
    transform-origin: top;
    transform: scaleY(0);
    opacity: 0;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
  }

  .main-nav ul {
    flex-direction: column;
    padding: 0.8rem 1.25rem 1.1rem;
    gap: 0.7rem;
  }

  .nav-toggle:checked ~ .main-nav {
    transform: scaleY(1);
    opacity: 1;
  }

  .nav-toggle:checked + .nav-toggle-label span {
    transform: rotate(45deg);
  }

  .nav-toggle:checked + .nav-toggle-label span::before {
    top: 0;
    transform: rotate(90deg);
  }

  .nav-toggle:checked + .nav-toggle-label span::after {
    bottom: 0;
    opacity: 0;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    padding-top: 0.5rem;
  }

  .hero-image {
    order: -1;
  }

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

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

@media (max-width: 480px) {
  .container {
    width: min(100% - 1.5rem, 100%);
  }

  .hero {
    padding-top: 2.5rem;
  }

  .hero-text h1 {
    font-size: 1.8rem;
  }

  .hero-text h2 {
    font-size: 1.15rem;
  }
}