/* ============================================
   FASO EXPRESS - STYLES PRINCIPAUX
   ============================================ */

/* Variables CSS pour la palette couleurs */
:root {
  --primary-orange: #EF7A3A;
  --secondary-blue: #0B3D91;
  --neutral-gray: #6B7280;
  --light-gray: #F9FAFB;
  --dark-gray: #1F2937;
  --white: #FFFFFF;
  --success-green: #10B981;
  --warning-yellow: #F59E0B;
  
  /* Typographie */
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Poppins', system-ui, -apple-system, sans-serif;
  
  /* Espacements */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Ombres */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

/* Reset et base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  line-height: 1.6;
  color: var(--dark-gray);
  background-color: var(--white);
}

/* Typographie */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: var(--spacing-md);
  color: var(--neutral-gray);
}

/* Liens */
a {
  color: var(--primary-orange);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--secondary-blue);
}

/* Boutons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0.5rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1rem;
  line-height: 1;
}

.btn-primary {
  background-color: var(--primary-orange);
  color: var(--white);
}

.btn-primary:hover {
  background-color: #d6692f;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: var(--secondary-blue);
  color: var(--white);
}

.btn-secondary:hover {
  background-color: #093571;
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary-orange);
  border: 2px solid var(--primary-orange);
}

.btn-outline:hover {
  background-color: var(--primary-orange);
  color: var(--white);
}

.btn-whatsapp {
  background-color: #25D366;
  color: var(--white);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-whatsapp:hover {
  background-color: #22c55e;
  color: var(--white);
  transform: translateY(-2px);
}

/* Conteneurs */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Grid système */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Sections */
.section {
  padding: var(--spacing-2xl) 0;
}

.section-hero {
  background: linear-gradient(135deg, var(--primary-orange) 0%, var(--secondary-blue) 100%);
  color: var(--white);
  padding: 4rem 0;
  position: relative;
  overflow: hidden;
}

.section-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><path d="M0,300 Q250,100 500,300 T1000,300 L1000,0 L0,0 Z" fill="rgba(255,255,255,0.1)"/></svg>') no-repeat center;
  background-size: cover;
}

.section-hero .container {
  position: relative;
  z-index: 2;
}

/* Header/Navigation */
header {
  background: var(--white);
  box-shadow: var(--shadow-sm);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: all 0.3s ease;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-orange);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
  align-items: center;
}

.nav-link {
  color: var(--dark-gray);
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--primary-orange);
}

/* Footer */
footer {
  background-color: var(--dark-gray);
  color: var(--white);
  padding: var(--spacing-2xl) 0 var(--spacing-lg) 0;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
  color: var(--primary-orange);
  margin-bottom: var(--spacing-md);
}

.footer-section p, .footer-section a {
  color: #D1D5DB;
  line-height: 1.6;
}

.footer-section a:hover {
  color: var(--primary-orange);
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: var(--spacing-lg);
  text-align: center;
  color: #9CA3AF;
}

/* Cards */
.card {
  background: var(--white);
  border-radius: 0.75rem;
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.card-icon {
  width: 3rem;
  height: 3rem;
  background: linear-gradient(135deg, var(--primary-orange), var(--secondary-blue));
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  color: var(--white);
  font-size: 1.5rem;
}

/* Témoignages */
.testimonial {
  background: var(--white);
  border-radius: 0.75rem;
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  position: relative;
}

.testimonial::before {
  content: '"';
  position: absolute;
  top: -10px;
  left: 20px;
  font-size: 4rem;
  color: var(--primary-orange);
  font-weight: bold;
}

.testimonial-author {
  margin-top: var(--spacing-md);
  font-weight: 600;
  color: var(--primary-orange);
}

/* Formulaires */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--dark-gray);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid #E5E7EB;
  border-radius: 0.5rem;
  font-size: 1rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--primary-orange);
  box-shadow: 0 0 0 3px rgba(239, 122, 58, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* WhatsApp sticky button */
.whatsapp-sticky {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
  background: #25D366;
  color: white;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  transition: all 0.3s ease;
  animation: whatsapp-pulse 2s infinite;
}

.whatsapp-sticky:hover {
  background: #22c55e;
  color: white;
  transform: scale(1.1);
}

@keyframes whatsapp-pulse {
  0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
  70% { box-shadow: 0 0 0 10px rgba(37, 211, 102, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* Alertes et notifications */
.alert {
  padding: 1rem;
  border-radius: 0.5rem;
  margin-bottom: var(--spacing-md);
  border-left: 4px solid;
}

.alert-success {
  background: #ECFDF5;
  border-color: var(--success-green);
  color: #047857;
}

.alert-warning {
  background: #FFFBEB;
  border-color: var(--warning-yellow);
  color: #92400E;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
}

.badge-primary {
  background: var(--primary-orange);
  color: var(--white);
}

.badge-secondary {
  background: var(--light-gray);
  color: var(--neutral-gray);
}

/* Statistiques */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-2xl) 0;
}

.stat-item {
  text-align: center;
  padding: var(--spacing-lg);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--primary-orange);
  display: block;
}

.stat-label {
  color: var(--neutral-gray);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .container { padding: 0 2rem; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .nav-menu { gap: 1rem; }
}

@media (max-width: 768px) {
  :root {
    --spacing-xl: 1.5rem;
    --spacing-2xl: 2rem;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  
  .container { padding: 0 1rem; }
  .section { padding: var(--spacing-xl) 0; }
  .section-hero { padding: 3rem 0; }
  
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .navbar {
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav-menu {
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .container { padding: 0 0.75rem; }
  
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.25rem; }
  
  .card { padding: var(--spacing-lg); }
  .section { padding: var(--spacing-lg) 0; }
  
  .stats {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}