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

:root {
  --color-primary: #C62828; /* Rouge suisse profond */
  --color-dark: #1E1E24;
  --color-gray: #4A4A55;
  --color-light: #F8F9FA;
  --color-bg: #FFFFFF;
  --shadow: 0 4px 20px rgba(0,0,0,0.06);
  --radius: 12px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.7;
  color: var(--color-gray);
  background-color: var(--color-light);
  scroll-behavior: smooth;
}

a {
  text-decoration: none;
  color: inherit;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header */
header {
  background-color: var(--color-bg);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 0;
}

.logo {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-dark);
}

.nav-links {
  display: flex;
  gap: 1.4rem;
  list-style: none;
  flex-wrap: wrap;
  justify-content: center;
}

.nav-links a {
  font-weight: 500;
  color: var(--color-gray);
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  transition: all 0.25s ease;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--color-primary);
  font-weight: 600;
}

/* Sections */
section {
  padding: 5rem 0;
  display: none;
}

section.active {
  display: block;
}

/* Hero avec image de fond subtile */
.hero {
  background: linear-gradient(rgba(30, 30, 36, 0.85), rgba(30, 30, 36, 0.9)), 
            url('https://images.unsplash.com/photo-1552664730-d307ca884978?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80');
  background-size: cover;
  background-position: center;
  color: white;
  padding: 7rem 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.4rem;
  margin-bottom: 1.8rem;
  line-height: 1.3;
  font-weight: 700;
}

.hero p {
  font-size: 1.15rem;
  max-width: 800px;
  margin: 0 auto 2.2rem;
  font-weight: 300;
}

.section-title {
  text-align: center;
  font-size: 2.1rem;
  margin-bottom: 2.5rem;
  color: var(--color-dark);
  font-weight: 700;
}

.section-content {
  max-width: 800px;
  margin: 0 auto;
}

.cta-button {
  display: inline-block;
  background-color: var(--color-primary);
  color: white;
  padding: 0.9rem 2.2rem;
  border-radius: 30px;
  font-weight: 600;
  transition: all 0.3s ease;
  margin-top: 1.2rem;
  box-shadow: 0 4px 12px rgba(198, 40, 40, 0.25);
}

.cta-button:hover {
  background-color: #a51e1e;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(198, 40, 40, 0.35);
}

/* Services */
.service-category {
  margin: 2.8rem 0;
}

.service-category h3 {
  font-size: 1.5rem;
  margin-bottom: 1.2rem;
  color: var(--color-dark);
  font-weight: 600;
}

.service-list {
  padding-left: 1.8rem;
}

.service-list li {
  margin-bottom: 0.8rem;
  position: relative;
}

.service-list li::before {
  content: "•";
  color: var(--color-primary);
  font-weight: bold;
  position: absolute;
  left: -1.2rem;
  font-size: 1.4rem;
}

/* Process */
.steps {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 900px;
  margin: 2.5rem auto;
}

.step-card {
  background: var(--color-bg);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
}

.step-card:hover {
  transform: translateY(-4px);
}

.step-card h4 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--color-dark);
  font-weight: 600;
}

/* Model */
.examples {
  display: flex;
  flex-direction: column;
  gap: 2.2rem;
  max-width: 850px;
  margin: 2.5rem auto;
}

.example {
  background: var(--color-bg);
  padding: 2.2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border-top: 3px solid var(--color-primary);
}

.example h4 {
  color: var(--color-dark);
  margin-bottom: 1.2rem;
  font-weight: 600;
}

/* Contact */
.contact-text {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 2.5rem;
  font-size: 1.1rem;
}

/* Footer */
footer {
  background-color: var(--color-dark);
  color: white;
  text-align: center;
  padding: 2.5rem 0 3rem;
  margin-top: 4rem;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.swiss-flag {
  display: inline-block;
  width: 20px;
  height: 20px;
  background: #FF0000;
  position: relative;
  margin: 0 6px;
  vertical-align: middle;
}

.swiss-flag::before,
.swiss-flag::after {
  content: "";
  position: absolute;
  background: white;
}

.swiss-flag::before {
  top: 50%;
  left: 4px;
  right: 4px;
  height: 4px;
  transform: translateY(-50%);
}

.swiss-flag::after {
  left: 50%;
  top: 4px;
  bottom: 4px;
  width: 4px;
  transform: translateX(-50%);
}

/* Mobile adjustments */
@media (min-width: 768px) {
  .hero h1 { font-size: 2.9rem; }
  .steps, .examples { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 2rem; 
  }
  .example:nth-child(2) {
    grid-column: 1 / -1;
  }
}

@media (max-width: 767px) {
  .hero h1 { font-size: 2rem; }
  .section-title { font-size: 1.8rem; }
}