/* Color Variables */
:root {
  --primary-color: #012D5A;
  --primary-color-light: #0a4d8c;
  --secondary-color: #C8993F;
  --secondary-color-light: #d4a657;
  --text-color: #333;
  --light-bg: #f8f9fa;
  --white: #ffffff;
  --border-color: #e0e0e0;

  --font-heading: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-body: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;

  --shadow-sm: 0 2px 8px rgba(1, 45, 90, 0.08);
  --shadow-md: 0 10px 25px rgba(1, 45, 90, 0.12);
  --shadow-lg: 0 20px 45px rgba(1, 45, 90, 0.18);
  --shadow-gold: 0 10px 25px rgba(200, 153, 63, 0.25);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;

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

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  color: var(--text-color);
  line-height: 1.6;
  background-color: var(--white);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .logo {
  font-family: var(--font-heading);
}

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

/* Focus visibility for accessibility + polish */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--secondary-color);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--light-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--secondary-color);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

/* Navigation Bar */
nav {
  background-color: var(--white);
  padding: 0.75rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 15px rgba(1, 45, 90, 0.1);
}

nav .container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: inline-flex;
  align-items: center;
}

.logo-img {
  display: block;
  height: 48px;
  width: auto;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  position: relative;
  color: var(--primary-color);
  font-weight: 500;
  padding: 0.25rem 0;
  transition: color var(--transition);
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background-color: var(--secondary-color);
  transition: width var(--transition);
}

.nav-links a:hover {
  color: var(--secondary-color);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-links a.active-link {
  color: var(--secondary-color);
  font-weight: 700;
}

.nav-links a.active-link::after {
  width: 100%;
}

/* One-page anchor targets: offset for the sticky nav height */
#accueil,
#a-propos,
#services,
#industries,
#contact {
  scroll-margin-top: 80px;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--primary-color);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 101;
  transition: color var(--transition), transform var(--transition);
}

.mobile-menu-toggle:hover {
  color: var(--secondary-color);
  transform: scale(1.08);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Hero Section */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-color-light) 100%);
  color: var(--white);
  padding: 6rem 2rem 8rem;
  text-align: center;
  overflow: hidden;
}

/* Fluid wave transition out of the hero into the section below */
.wave-divider {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  line-height: 0;
  z-index: 2;
  pointer-events: none;
}

.wave-divider svg {
  display: block;
  width: 100%;
  height: 90px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(200, 153, 63, 0.18) 0%, transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 40%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 3.1rem;
  font-weight: 700;
  margin-bottom: 1.2rem;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
  letter-spacing: -0.5px;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2.2rem;
  opacity: 0.92;
}

.cta-button {
  display: inline-block;
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--secondary-color-light) 100%);
  color: var(--primary-color);
  padding: 0.85rem 2.2rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-family: var(--font-heading);
  box-shadow: var(--shadow-gold);
  transition: box-shadow var(--transition), transform var(--transition);
  cursor: pointer;
  border: none;
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 30px rgba(200, 153, 63, 0.35);
}

.cta-button:active {
  transform: translateY(-1px);
}

/* Section Styles */
section {
  padding: 4rem 0;
}

/* Soft gradient wash instead of a hard flat-color block, for a smoother
   transition into and out of alternating sections */
.section-alt {
  background: linear-gradient(180deg, #fbfbfd 0%, #f3f5f8 50%, #fbfbfd 100%);
}

section h2 {
  position: relative;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 1.25rem;
  text-align: center;
  letter-spacing: -0.5px;
}

section h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  margin: 0.9rem auto 0;
  background: linear-gradient(90deg, var(--secondary-color), var(--secondary-color-light));
  border-radius: 4px;
}

section h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

/* Grid Layout */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

/* Cards */
.card {
  background-color: var(--light-bg);
  padding: 2.25rem 2rem;
  border-radius: var(--radius-lg);
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 18px rgba(1, 45, 90, 0.05);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.card h3 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.card p {
  color: var(--text-color);
  line-height: 1.8;
}

/* About Section */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-top: 2rem;
}

.about-text h3 {
  margin-bottom: 1rem;
}

.about-text p {
  margin-bottom: 1rem;
  text-align: justify;
}

.about-image {
  width: 100%;
  height: 400px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 4rem;
  box-shadow: var(--shadow-lg);
}

/* Photo variant: real photo tinted in brand colors (duotone) so it reads as
   intentional brand photography rather than a random stock image */
.about-image-photo {
  position: relative;
  overflow: hidden;
  background: var(--primary-color);
}

.about-image-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) brightness(0.85) contrast(1.05);
}

.about-image-photo::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(1, 45, 90, 0.75), rgba(200, 153, 63, 0.45));
  mix-blend-mode: multiply;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
  align-items: start;
}

.service-card {
  background: var(--white);
  padding: 2.25rem 2rem;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: 0 4px 18px rgba(1, 45, 90, 0.05);
  transition: box-shadow var(--transition), transform var(--transition);
}

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

.service-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--secondary-color);
  transition: transform var(--transition);
}

.service-card:hover .service-icon,
.service-card:hover img.service-icon {
  transform: scale(1.08);
}

img.service-icon {
  filter: drop-shadow(0 6px 10px rgba(1, 45, 90, 0.15));
}

.service-card h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

/* Industries Section */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.industry-card {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-color-light));
  color: var(--white);
  padding: 0 0 2rem;
  border-radius: var(--radius-lg);
  text-align: center;
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(1, 45, 90, 0.08);
  transition: transform var(--transition), box-shadow var(--transition);
}

.industry-card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: var(--shadow-lg);
}

.industry-card img {
  transition: transform var(--transition);
}

.industry-card:hover img {
  transform: scale(1.06);
}

.industry-card h3,
.industry-card p {
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.industry-card h3 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.industry-card p {
  font-size: 0.95rem;
}

/* News/Actualités Section */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.news-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(1, 45, 90, 0.05);
  transition: transform var(--transition), box-shadow var(--transition);
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.news-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 3rem;
}

.news-content {
  padding: 1.5rem;
}

.news-card h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.news-card p {
  color: #666;
  margin-bottom: 1rem;
}

.read-more {
  color: var(--secondary-color);
  font-weight: bold;
  transition: color var(--transition), gap var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.read-more:hover {
  color: var(--primary-color);
  gap: 0.55rem;
}

/* Contact Form */
.contact-section {
  background-color: var(--light-bg);
  padding: 3rem 0;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 2rem;
}

.contact-content form {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-item {
  display: flex;
  gap: 1rem;
  padding: 1rem;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition), transform var(--transition);
}

.contact-item:hover {
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}

.contact-icon {
  font-size: 1.5rem;
  color: var(--secondary-color);
  min-width: 30px;
  filter: drop-shadow(0 4px 6px rgba(1, 45, 90, 0.15));
}

.contact-item h3 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.contact-item p {
  color: var(--text-color);
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
  font-weight: 600;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:hover,
.form-group textarea:hover {
  border-color: var(--secondary-color-light);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 4px rgba(200, 153, 63, 0.15);
}

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

.submit-button {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-color-light) 100%);
  color: var(--white);
  padding: 0.85rem 2.2rem;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-family: var(--font-heading);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition), transform var(--transition);
  font-size: 1rem;
}

.submit-button:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.submit-button:active {
  transform: translateY(-1px);
}

/* Footer */
footer {
  position: relative;
  background-color: var(--primary-color);
  color: var(--white);
  text-align: center;
  padding: 2.5rem 2rem;
  margin-top: 3rem;
}

footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--secondary-color), var(--secondary-color-light), var(--secondary-color));
}

.footer-logo {
  display: inline-flex;
  background-color: var(--white);
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  margin-bottom: 1.5rem;
}

.footer-logo img {
  display: block;
  height: 44px;
  width: auto;
}

footer p {
  margin: 0.5rem 0;
  opacity: 0.9;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--secondary-color);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--white);
}

/* Responsive Design */
@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: block;
  }

  .logo-img {
    height: 38px;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--primary-color);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: 80px;
    gap: 2rem;
    transition: right 0.3s ease;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.2);
    z-index: 99;
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links li {
    opacity: 0;
    transform: translateX(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
  }

  .nav-links.active li {
    opacity: 1;
    transform: translateX(0);
  }

  .nav-links.active li:nth-child(1) { transition-delay: 0.1s; }
  .nav-links.active li:nth-child(2) { transition-delay: 0.2s; }
  .nav-links.active li:nth-child(3) { transition-delay: 0.3s; }
  .nav-links.active li:nth-child(4) { transition-delay: 0.4s; }
  .nav-links.active li:nth-child(5) { transition-delay: 0.5s; }

  .nav-links a {
    color: var(--white);
    font-size: 1.2rem;
    padding: 0.5rem 1rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
  }

  .about-image {
    height: 300px;
  }

  section h2 {
    font-size: 2rem;
  }

  .grid,
  .services-grid,
  .industries-grid,
  .news-grid {
    grid-template-columns: 1fr;
  }

  /* Overlay when menu is open */
  .nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 98;
  }

  .nav-overlay.active {
    display: block;
  }
}

/* Scroll reveal: fluid fade + settle-in used by script.js's IntersectionObserver */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(28px) scale(0.97);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

@media (prefers-reduced-motion: reduce) {
  .reveal-on-scroll {
    opacity: 1;
    transform: none;
    transition: none;
  }
}