/* ==========================================
   CHARTE GRAPHIQUE MODERNE, DYNAMIQUE & ECO-CONÇUE
   AllôRéKà Solutions (Version 7.1)
   ========================================== */

:root {
  --primary-hue: 222;
  --primary: hsl(var(--primary-hue), 83%, 32%);
  --primary-light: hsl(var(--primary-hue), 72%, 52%);
  --primary-dark: hsl(var(--primary-hue), 85%, 18%);
  
  --accent-hue: 168;
  --accent: hsl(var(--accent-hue), 78%, 38%);
  --accent-light: hsl(var(--accent-hue), 65%, 92%);

  --neutral-dark: #0f172a;
  --neutral-body: #334155;
  --neutral-light: #f8fafc;
  --neutral-card: #ffffff;
  --border-subtle: #e2e8f0;

  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
  --shadow-hover: 0 20px 30px -10px rgba(30, 58, 138, 0.15);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.7;
  color: var(--neutral-body);
  background-color: var(--neutral-light);
  -webkit-font-smoothing: antialiased;
}

/* Header & Glassmorphism Navigation */
header {
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-dark);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  letter-spacing: -0.02em;
}

.logo-dot {
  width: 10px;
  height: 10px;
  background-color: var(--accent);
  border-radius: 50%;
  display: inline-block;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 1.2rem;
  flex-wrap: wrap;
}

nav a {
  text-decoration: none;
  color: var(--neutral-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

nav a:hover, nav a.active {
  color: var(--primary);
  background-color: hsl(var(--primary-hue), 85%, 96%);
}

.nav-cta {
  background-color: var(--accent) !important;
  color: #ffffff !important;
}

.nav-cta:hover {
  background-color: hsl(var(--accent-hue), 82%, 34%) !important;
}

/* Hero Section */
.hero {
  background: radial-gradient(circle at top right, hsl(var(--primary-hue), 70%, 25%), var(--primary-dark));
  color: #ffffff;
  padding: 5rem 1.5rem 6rem 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -50px;
  left: 0;
  right: 0;
  height: 100px;
  background: var(--neutral-light);
  transform: skewY(-1.8deg);
}

.hero-content {
  max-width: 850px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 1.2rem;
  letter-spacing: -0.03em;
}

.hero p {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  opacity: 0.92;
  margin-bottom: 2.2rem;
  font-weight: 400;
  line-height: 1.6;
}

/* Boutons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--accent);
  color: #ffffff;
  padding: 0.9rem 2rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: 0 4px 14px rgba(13, 148, 136, 0.35);
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(13, 148, 136, 0.45);
  background-color: hsl(var(--accent-hue), 82%, 34%);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.15);
  color: #ffffff;
  margin-left: 1rem;
  box-shadow: none;
  backdrop-filter: blur(5px);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.25);
}

/* Containers et Grilles */
.container {
  max-width: 1150px;
  margin: 3.5rem auto;
  padding: 0 1.5rem;
}

.section-header {
  text-align: center;
  max-width: 750px;
  margin: 0 auto 3rem auto;
}

.section-header h2 {
  font-size: 2.1rem;
  color: var(--neutral-dark);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.section-header p {
  margin-top: 0.6rem;
  font-size: 1.1rem;
  color: #64748b;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
}

/* Cartes */
.card {
  background-color: var(--neutral-card);
  padding: 2.2rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: hsl(var(--primary-hue), 70%, 88%);
}

.card-icon {
  width: 50px;
  height: 50px;
  background-color: var(--accent-light);
  color: var(--accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.2rem;
  font-weight: bold;
}

.card h3 {
  font-size: 1.35rem;
  color: var(--neutral-dark);
  margin-bottom: 0.8rem;
  font-weight: 700;
}

.card p {
  color: var(--neutral-body);
  font-size: 0.98rem;
  margin-bottom: 1.2rem;
}

.card-link {
  color: var(--primary-light);
  text-decoration: none;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: var(--transition);
}

.card-link:hover {
  color: var(--primary);
  gap: 0.7rem;
}

.badge {
  display: inline-block;
  background-color: hsl(var(--primary-hue), 85%, 95%);
  color: var(--primary);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.8rem;
}

.pillar-list {
  list-style: none;
  margin: 1.5rem 0;
}

.pillar-list li {
  margin-bottom: 1rem;
  padding-left: 2rem;
  position: relative;
  font-size: 1.02rem;
}

.pillar-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  width: 22px;
  height: 22px;
  background-color: var(--accent-light);
  color: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 0.85rem;
}

.case-study-box {
  background: linear-gradient(135deg, #ffffff, #f1f5f9);
  border-left: 5px solid var(--accent);
  padding: 1.8rem;
  border-radius: var(--radius-md);
  margin-top: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.case-study-box h4 {
  color: var(--neutral-dark);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Formulaire de Contact Dynamique */
.contact-form {
  background-color: var(--neutral-card);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--neutral-dark);
}

.form-control {
  width: 100%;
  padding: 0.85rem 1.1rem;
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  color: var(--neutral-dark);
  background-color: #f8fafc;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-light);
  background-color: #ffffff;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}

textarea.form-control {
  resize: vertical;
  min-height: 140px;
}

.form-hint {
  font-size: 0.85rem;
  color: #64748b;
  margin-top: 0.4rem;
}

/* Footer */
footer {
  background-color: var(--neutral-dark);
  color: #94a3b8;
  padding: 3.5rem 1.5rem 2rem 1.5rem;
  margin-top: 5rem;
  font-size: 0.95rem;
  border-top: 1px solid #1e293b;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2.5rem;
  margin-bottom: 2.5rem;
  text-align: left;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 1.1rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.6rem;
}

.footer-col a {
  color: #94a3b8;
  text-decoration: none;
  transition: var(--transition);
}

.footer-col a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 1.8rem;
  text-align: center;
  color: #64748b;
  font-size: 0.88rem;
}

@media (max-width: 768px) {
  .hero {
    padding: 3.5rem 1rem 4.5rem 1rem;
  }
  .btn-secondary {
    margin-left: 0;
    margin-top: 1rem;
    display: flex;
  }
  .contact-form {
    padding: 1.5rem;
  }
}