/* RESET & VARIABLES */
:root {
  --primary-dark: #0f172a;    /* Bleu nuit très sombre (style TradeValue) */
  --secondary-dark: #1e293b;  /* Bleu marine foncé */
  --accent-gold: #c5a059;     /* Doré / Bronze discret */
  --text-dark: #1e293b;
  --text-muted: #64748b;
  --text-light: #f8fafc;
  --bg-light: #f1f5f9;
  --white: #ffffff;
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Roboto', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--text-dark);
  line-height: 1.7;
  background-color: var(--white);
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

/* NAVIGATION BAR */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  padding: 18px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.logo {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 2px;
}

.logo-main {
  color: var(--white);
}

.logo-accent {
  color: var(--accent-gold);
  margin-left: 4px;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 25px;
  align-items: center;
}

nav a {
  color: var(--text-light);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 400;
  transition: color 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
}

nav a:hover {
  color: var(--accent-gold);
}

.nav-contact-btn {
  border: 1px solid var(--accent-gold);
  padding: 8px 18px;
  border-radius: 2px;
  color: var(--accent-gold) !important;
}

.nav-contact-btn:hover {
  background-color: var(--accent-gold);
  color: var(--primary-dark) !important;
}

/* HERO SECTION */
.hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 100%);
  color: var(--white);
  padding: 120px 0 100px;
  text-align: center;
}

.subtitle-uppercase {
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--accent-gold);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 15px;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  max-width: 850px;
  margin: 0 auto 20px;
  line-height: 1.3;
}

.divider {
  width: 60px;
  height: 3px;
  background-color: var(--accent-gold);
  margin: 25px auto;
}

.hero-description {
  max-width: 700px;
  margin: 0 auto 35px;
  font-size: 1.1rem;
  color: #cbd5e1;
  font-weight: 300;
}

.btn-primary {
  display: inline-block;
  background-color: var(--accent-gold);
  color: var(--primary-dark);
  padding: 14px 32px;
  text-decoration: none;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.85rem;
  border-radius: 2px;
  transition: all 0.3s ease;
}

.btn-primary:hover {
  background-color: #d8b26e;
  transform: translateY(-2px);
}

/* SECTIONS STYLES */
.section {
  padding: 90px 0;
}

.bg-dark {
  background-color: var(--primary-dark);
}

.bg-light {
  background-color: var(--bg-light);
}

.section-tag {
  display: block;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-gold);
  margin-bottom: 8px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 30px;
}

.light-text {
  color: var(--white) !important;
}

.section-text {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 800px;
}

/* EXPERTISES GRID (PÔLES NUMÉROTÉS) */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 25px;
  margin-top: 40px;
}

.expertise-card {
  background-color: var(--secondary-dark);
  padding: 40px 30px;
  border-radius: 4px;
  position: relative;
  transition: transform 0.3s ease, border-color 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.expertise-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-gold);
}

.card-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-gold);
  display: block;
  margin-bottom: 15px;
  opacity: 0.8;
}

.expertise-card h3 {
  font-family: var(--font-heading);
  color: var(--white);
  font-size: 1.2rem;
  margin-bottom: 15px;
}

.expertise-card p {
  color: #94a3b8;
  font-size: 0.95rem;
}

/* PRINCIPLES GRID */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.principle-item {
  border-left: 2px solid var(--accent-gold);
  padding-left: 20px;
}

.principle-item h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--primary-dark);
  text-transform: uppercase;
  margin-bottom: 5px;
}

.principle-item p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* OFFERS GRID */
.offer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 40px;
}

.offer-card {
  background-color: var(--white);
  padding: 35px;
  border-radius: 4px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.03);
}

.offer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
}

.offer-card h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: var(--primary-dark);
}

.offer-badge {
  background-color: rgba(197, 160, 89, 0.15);
  color: #8f6e2f;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 20px;
  text-transform: uppercase;
}

.offer-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* WHY US / CHASSE DE TÊTES */
.why-us-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.why-card {
  background-color: var(--white);
  padding: 30px;
  border: 1px solid #e2e8f0;
  border-radius: 4px;
}

.why-card h3 {
  font-family: var(--font-heading);
  color: var(--primary-dark);
  font-size: 1.15rem;
  margin-bottom: 12px;
}

.why-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* CONTACT & FOOTER */
.text-center {
  text-align: center;
}

.lead-text {
  font-size: 1.1rem;
  margin-bottom: 30px;
}

.contact-info {
  background-color: var(--secondary-dark);
  display: inline-block;
  padding: 35px 50px;
  border-radius: 4px;
  text-align: left;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-info p {
  color: var(--text-light);
  margin-bottom: 10px;
  font-size: 1rem;
}

.contact-info p:last-child {
  margin-bottom: 0;
}

footer {
  background-color: #090d16;
  color: #64748b;
  padding: 30px 0;
  font-size: 0.85rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

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

/* RESPONSIVE DESIGN */
@media (max-width: 768px) {
  .navbar-content {
    flex-direction: column;
    gap: 15px;
  }
  nav ul {
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
  }
  .hero h1 {
    font-size: 1.8rem;
  }
  .footer-content {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
  .contact-info {
    padding: 25px;
    width: 100%;
  }
}