:root {
  /* Color Palette - Nuances de Bleu Pétrole & Vert Sauge Chaleureux */
  --color-primary: #1A3644;        /* Bleu pétrole profond / Marine raffiné */
  --color-primary-dark: #0F232D;   /* Nuit */
  --color-primary-light: #2C4D5E;  /* Bleu ardoise doux */
  
  --color-teal: #246B70;           /* Bleu canard / Pétrole doux */
  --color-teal-light: #EBF5F6;     /* Brume bleu clair */
  
  --color-green: #2A7E68;          /* Vert sauge / Eucalyptus */
  --color-green-light: #EDF7F4;    /* Vert sauge très doux */
  
  --color-warm: #C86D3B;           /* Terracotta / Ocre doux */
  --color-warm-light: #FDF3EC;     /* Pêche très pâle */
  
  --color-bg-main: #FBFBF9;        /* Écru / Ivoire chaleureux */
  --color-bg-card: #FFFFFF;
  --color-bg-subtle: #F4F6F5;      /* Gris perle doux */
  --color-bg-sage: #F0F6F4;
  
  --color-text-main: #1C2D37;      /* Anthracite teinté */
  --color-text-muted: #576F7C;     /* Gris bleuté doux */
  --color-text-light: #8FA4B0;
  --color-text-inverse: #FFFFFF;
  
  --color-border: #E3EBEA;
  --color-border-light: #EEF3F2;
  
  /* Typography - Validé par Nathalie : Lora (Élégante & Littéraire) */
  --font-heading: 'Lora', Georgia, 'Times New Roman', serif;
  --font-body: 'Lora', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Shadows & Radius */
  --shadow-sm: 0 2px 4px rgba(27, 59, 75, 0.04);
  --shadow-md: 0 6px 16px -2px rgba(27, 59, 75, 0.08);
  --shadow-lg: 0 12px 24px -4px rgba(27, 59, 75, 0.1);
  --shadow-xl: 0 20px 32px -6px rgba(27, 59, 75, 0.12);
  
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.28;
}

h1 { font-size: clamp(2.1rem, 4vw, 2.9rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.7rem, 3vw, 2.25rem); letter-spacing: -0.015em; }
h3 { font-size: clamp(1.3rem, 2vw, 1.55rem); }
h4 { font-size: 1.15rem; }

p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

ul { list-style: none; }

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-spacing {
  padding: 5.5rem 0;
}

.section-title-wrap {
  text-align: center;
  max-width: 740px;
  margin: 0 auto 3.5rem;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-teal-light);
  color: var(--color-teal);
  padding: 0.45rem 1.15rem;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(36, 107, 112, 0.15);
}

.section-badge.green {
  background: var(--color-green-light);
  color: var(--color-green);
  border-color: rgba(42, 126, 104, 0.15);
}

.section-badge.warm {
  background: var(--color-warm-light);
  color: var(--color-warm);
  border-color: rgba(200, 109, 59, 0.2);
}

.section-title {
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.15rem;
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(251, 251, 249, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-smooth);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.brand-logo {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.brand-title {
  font-size: 0.82rem;
  color: var(--color-teal);
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.2rem;
}

.nav-link {
  font-weight: 500;
  font-size: 0.98rem;
  color: var(--color-text-main);
  padding: 0.5rem 0;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-teal);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2.5px;
  background: var(--color-teal);
  border-radius: 2px;
}

.header-cta-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.96rem;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition-smooth);
}

.btn-primary {
  background: var(--color-teal);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(36, 107, 112, 0.28);
}

.btn-primary:hover {
  background: #1B5357;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(36, 107, 112, 0.38);
}

.btn-green {
  background: var(--color-green);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(42, 126, 104, 0.28);
}

.btn-green:hover {
  background: #206251;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(42, 126, 104, 0.38);
}

.btn-warm {
  background: var(--color-warm);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(200, 109, 59, 0.28);
}

.btn-warm:hover {
  background: #B05B2D;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200, 109, 59, 0.38);
}

.btn-secondary {
  background: #FFFFFF;
  color: var(--color-primary);
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--color-bg-subtle);
  border-color: var(--color-teal);
  transform: translateY(-2px);
}

.btn-outline-warm {
  background: transparent;
  color: var(--color-warm);
  border-color: var(--color-warm);
}

.btn-outline-warm:hover {
  background: var(--color-warm-light);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-primary);
}

/* Hero Section with Human Photography */
.hero-section {
  padding: 4.5rem 0 5rem;
  background: linear-gradient(180deg, #FFFFFF 0%, #F5F8F7 100%);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
}

.hero-tagline {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 2.5vw, 1.65rem);
  font-weight: 700;
  color: var(--color-teal);
}

.hero-description {
  font-size: 1.15rem;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.5rem;
}

/* Hero Image & Card */
.hero-visual-wrapper {
  position: relative;
}

.hero-photo-frame {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 4px solid #FFFFFF;
  position: relative;
}

.hero-photo-frame img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.hero-floating-card {
  position: absolute;
  bottom: -25px;
  left: -20px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  max-width: 420px;
}

.floating-icon {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-green-light);
  color: var(--color-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

/* Category Cards with Photos (Lycéens & Étudiants) */
.targets-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.target-card-enhanced {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.target-card-enhanced:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(36, 107, 112, 0.35);
}

.target-img-wrap {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.target-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.target-card-enhanced:hover .target-img-wrap img {
  transform: scale(1.04);
}

.target-badge-overlay {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.target-card-body {
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  flex-grow: 1;
}

.target-services-list {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  margin: 1.5rem 0 2rem;
}

.target-service-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.975rem;
  color: var(--color-text-main);
}

.check-icon {
  color: var(--color-teal);
  flex-shrink: 0;
  margin-top: 3px;
}

.check-icon.green {
  color: var(--color-green);
}

/* Pillars / Philosophy Grid */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.pillar-card {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  text-align: left;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.pillar-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-teal);
  opacity: 0.7;
}

.pillar-card:nth-child(2)::before { background: var(--color-green); }
.pillar-card:nth-child(3)::before { background: var(--color-warm); }

.pillar-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pillar-number {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-teal);
  margin-bottom: 0.75rem;
  line-height: 1;
}

/* Services Detail Page */
.service-section-box {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.75rem;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-md);
}

.service-box-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-border-light);
  flex-wrap: wrap;
}

.step-timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin: 1.75rem 0;
}

.step-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 1.25rem;
}

.step-badge {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-bg-subtle);
  color: var(--color-primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  border: 2px solid var(--color-border);
}

.step-badge.active {
  background: var(--color-teal-light);
  color: var(--color-teal);
  border-color: var(--color-teal);
}

.price-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-bg-subtle);
  padding: 0.5rem 1.15rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  color: var(--color-primary-dark);
  font-size: 0.95rem;
  border: 1px solid var(--color-border);
}

/* Discovery Call Banner & First Contact Card */
.first-contact-card {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 3rem 2.5rem;
  text-align: center;
  margin: 3.5rem auto;
  max-width: 720px;
  box-shadow: var(--shadow-md);
}

.discovery-call-banner {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, #163842 100%);
  color: #FFFFFF;
  border-radius: var(--radius-xl);
  padding: 4rem 2.5rem;
  text-align: center;
  margin: 4.5rem 0;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.discovery-call-banner::after {
  content: '';
  position: absolute;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(42, 126, 104, 0.3) 0%, transparent 70%);
  top: -100px;
  right: -50px;
  pointer-events: none;
}

.banner-content {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.35rem;
  position: relative;
  z-index: 2;
}

.banner-title {
  color: #FFFFFF;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.banner-text {
  color: #D1E1E6;
  font-size: 1.1rem;
}

/* Contact Page Grid */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.contact-info-card, .form-card {
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.75rem;
  box-shadow: var(--shadow-md);
}

.info-group {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.info-icon {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  background: var(--color-teal-light);
  color: var(--color-teal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.45rem;
  color: var(--color-primary-dark);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: var(--transition-fast);
  background: #FAFAF9;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--color-teal);
  background: #FFFFFF;
  box-shadow: 0 0 0 3.5px rgba(36, 107, 112, 0.15);
}

/* Footer */
.site-footer {
  background: var(--color-primary-dark);
  color: #8FA4B0;
  padding: 4.5rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3.5rem;
}

.footer-brand h4 {
  color: #FFFFFF;
  font-size: 1.25rem;
  margin-bottom: 0.6rem;
}

.footer-brand p {
  color: #8FA4B0;
  font-size: 0.95rem;
}

.footer-col h5 {
  color: #FFFFFF;
  font-size: 1rem;
  margin-bottom: 1.2rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  color: #8FA4B0;
  font-size: 0.92rem;
}

.footer-links a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1.75rem;
  text-align: center;
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 992px) {
  .hero-grid { grid-template-columns: 1fr; }
  .targets-grid { grid-template-columns: 1fr; }
  .pillars-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-floating-card { position: static; max-width: 100%; margin-top: 1rem; }
}

@media (max-width: 768px) {
  .nav-links, .header-cta-group { display: none; }
  .mobile-toggle { display: block; }
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 84px;
    left: 0;
    right: 0;
    background: #FFFFFF;
    padding: 1.75rem;
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid var(--color-border);
  }
  .footer-grid { grid-template-columns: 1fr; }
}