/* ==========================================================================
   CSS VARIABLES & RESET
   ========================================================================== */

:root {
  /* Colors - Null gradient strategy (Flat Design) */
  --c-navy: #0F172A;
  --c-navy-light: #1E293B;
  --c-navy-dark: #020617;
  --c-accent: #38BDF8;
  --c-accent-hover: #0EA5E9;
  --c-white: #FFFFFF;
  --c-gray-light: #F4F6F8;
  --c-gray: #6B7280;
  --c-text-main: #333333;
  --c-text-muted: #666666;
  --c-error: #DC2626;
  --c-success: #16A34A;

  /* Typography */
  --font-main: 'Poppins', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;

  /* Layout */
  --container-width: 1200px;
  --border-radius: 6px;
  --border-radius-lg: 12px;

  /* Transitions */
  --trans-fast: 0.2s ease;
  --trans-base: 0.3s ease;
  --trans-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

/* ==========================================================================
   UTILITIES & TYPOGRAPHY
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1.2;
  font-weight: 600;
}

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

ul {
  list-style: none;
}

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

.accent-underline {
  position: relative;
  display: inline-block;
  color: var(--c-accent);
}

.accent-underline::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: var(--c-accent);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  border-radius: var(--border-radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--trans-base);
  text-align: center;
  white-space: nowrap;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-accent {
  background-color: var(--c-accent);
  color: var(--c-navy);
  border-color: var(--c-accent);
}

.btn-accent:hover {
  background-color: var(--c-gold-hover);
  border-color: var(--c-gold-hover);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  background-color: var(--c-white);
  color: var(--c-navy);
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--c-navy);
  color: var(--c-white);
  z-index: 1000;
  transition: padding var(--trans-base), background-color var(--trans-base);
  padding: 1.5rem 0;
}

.site-header.scrolled {
  padding: 1rem 0;
  background-color: rgba(11, 31, 58, 0.98);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-white);
}

.logo-icon {
  color: var(--c-accent);
  display: flex;
  align-items: center;
}

.logo-accent {
  color: var(--c-accent);
  font-weight: 300;
}

.nav-list {
  display: flex;
  gap: 2rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--c-accent);
  transition: width var(--trans-base);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.burger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1010;
}

.burger span {
  width: 100%;
  height: 2px;
  background-color: var(--c-white);
  transition: all var(--trans-base);
}

/* ==========================================================================
   SECTIONS GLOBAL
   ========================================================================== */

.section {
  padding: var(--space-xl) 0;
}

.section-light {
  background-color: var(--c-gray-light);
}

.section-dark {
  background-color: var(--c-navy);
  color: var(--c-white);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-lg);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.section-tag {
  color: var(--c-accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--c-text-muted);
}

.section-dark .section-desc {
  color: rgba(255, 255, 255, 0.7);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero {
  background-color: var(--c-navy);
  color: var(--c-white);
  padding: 160px 0 100px;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-tag {
  color: var(--c-accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2.5rem;
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
}

.hero-image-wrapper {
  position: relative;
}

.hero-img {
  border-radius: var(--border-radius-lg);
  border: 4px solid var(--c-accent);
  object-fit: cover;
  min-height: 450px;
}

.hero-image-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background-color: var(--c-white);
  color: var(--c-navy);
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  border-left: 4px solid var(--c-accent);
}

.hero-image-badge i {
  color: var(--c-accent);
}

/* ==========================================================================
   SERVICES SECTION
   ========================================================================== */

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

.service-card {
  background-color: var(--c-white);
  padding: 2.5rem;
  border-radius: var(--border-radius);
  border-top: 4px solid transparent;
  transition: all var(--trans-base);
}

.service-card:hover {
  border-top-color: var(--c-accent);
  transform: translateY(-5px);
}

.service-icon {
  width: 60px;
  height: 60px;
  background-color: var(--c-navy);
  color: var(--c-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  margin-bottom: 1.5rem;
}

.service-icon i {
  width: 28px;
  height: 28px;
}

.service-title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--c-navy);
}

.service-desc {
  color: var(--c-text-muted);
}

/* ==========================================================================
   ÉQUIPEMENTS SECTION
   ========================================================================== */

.equip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.equip-card {
  background-color: var(--c-navy-light);
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: border-color var(--trans-base);
}

.equip-card:hover {
  border-color: var(--c-accent);
}

.equip-img-wrap {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.equip-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--trans-slow);
}

.equip-card:hover .equip-img {
  transform: scale(1.05);
}

.equip-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background-color: var(--c-accent);
  color: var(--c-navy);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}

.equip-body {
  padding: 1.5rem;
}

.equip-name {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--c-white);
}

.equip-desc {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}

/* ==========================================================================
   POURQUOI NOUS SECTION
   ========================================================================== */

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.why-card {
  background-color: var(--c-white);
  padding: 2rem;
  border-radius: var(--border-radius);
  text-align: center;
  border: 1px solid #E5E7EB;
}

.why-icon {
  color: var(--c-accent);
  margin-bottom: 1rem;
}

.why-icon i {
  width: 40px;
  height: 40px;
}

.why-title {
  color: var(--c-navy);
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
}

.why-desc {
  font-size: 0.875rem;
  color: var(--c-text-muted);
}

/* ==========================================================================
   TÉMOIGNAGES CAROUSEL
   ========================================================================== */

.testimonial-carousel {
  position: relative;
  overflow: hidden;
  padding: 2rem 0;
}

.testimonial-track {
  display: flex;
  transition: transform var(--trans-slow);
}

.testimonial-slide {
  min-width: 100%;
  padding: 0 1rem;
}

.testimonial-card {
  background-color: var(--c-navy-light);
  padding: 2.5rem;
  border-radius: var(--border-radius);
  border: 1px solid rgba(56, 189, 248, 0.2);
  max-width: 800px;
  margin: 0 auto;
}

.testimonial-stars {
  color: var(--c-accent);
  margin-bottom: 1rem;
  display: flex;
  gap: 0.25rem;
}

.testimonial-stars i {
  width: 20px;
  height: 20px;
  fill: var(--c-accent);
}

.testimonial-text {
  font-size: 1.25rem;
  font-style: italic;
  margin-bottom: 2rem;
  line-height: 1.8;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testimonial-avatar {
  width: 50px;
  height: 50px;
  background-color: var(--c-accent);
  color: var(--c-navy);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
}

.testimonial-name {
  font-weight: 600;
  color: var(--c-white);
}

.testimonial-role {
  color: var(--c-accent);
  font-size: 0.875rem;
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
}

.carousel-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--c-white);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--trans-base);
}

.carousel-btn:hover {
  background-color: var(--c-accent);
  border-color: var(--c-accent);
  color: var(--c-navy);
}

.carousel-dots {
  display: flex;
  gap: 0.5rem;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.3);
  cursor: pointer;
  border: none;
  transition: background-color var(--trans-base);
}

.dot.active {
  background-color: var(--c-accent);
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */

.contact-grid {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 4rem;
}

.contact-form-wrap {
  background-color: var(--c-white);
  padding: 3rem;
  border-radius: var(--border-radius);
  border: 1px solid #E5E7EB;
}

.contact-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

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

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--c-navy);
}

.form-group .required {
  color: var(--c-accent);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid #D1D5DB;
  border-radius: 4px;
  font-family: inherit;
  font-size: 1rem;
  background-color: #F9FAFB;
  transition: border-color var(--trans-base);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--c-accent);
  background-color: var(--c-white);
}

.form-group input.error,
.form-group textarea.error {
  border-color: var(--c-error);
}

.form-error {
  color: var(--c-error);
  font-size: 0.75rem;
  margin-top: 0.25rem;
  display: block;
  min-height: 14px;
}

.btn-submit {
  width: 100%;
}

.form-success {
  display: none;
  align-items: center;
  gap: 0.75rem;
  background-color: #F0FDF4;
  color: var(--c-success);
  padding: 1rem;
  border-radius: 4px;
  margin-top: 1.5rem;
  border: 1px solid #BBF7D0;
}

.form-success.active {
  display: flex;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.info-card {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background-color: var(--c-white);
  padding: 1.5rem;
  border-radius: var(--border-radius);
  border: 1px solid #E5E7EB;
}

.info-icon {
  width: 48px;
  height: 48px;
  background-color: var(--c-navy);
  color: var(--c-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
}

.info-card h4 {
  color: var(--c-navy);
  margin-bottom: 0.25rem;
}

.info-card p {
  color: var(--c-text-muted);
  font-size: 0.9375rem;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
  background-color: var(--c-navy-dark);
  color: var(--c-white);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand .logo {
  margin-bottom: 1.5rem;
}

.footer-desc {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
}

.footer-socials {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 36px;
  height: 36px;
  background-color: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  color: var(--c-white);
}

.social-link:hover {
  background-color: var(--c-gold);
  color: var(--c-navy);
}

.footer-heading {
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
  color: var(--c-white);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9375rem;
}

.footer-links a:hover {
  color: var(--c-gold);
  padding-left: 5px;
}

.footer-links li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9375rem;
}

.footer-icon {
  color: var(--c-gold);
  width: 18px;
  height: 18px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-legal {
  display: flex;
  gap: 1.5rem;
}

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

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-inner {
    gap: 2rem;
  }

  .hero-title {
    font-size: 2.75rem;
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .header-actions .btn {
    display: none;
  }

  .burger {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 250px;
    height: 100vh;
    background-color: var(--c-navy);
    padding: 80px 2rem 2rem;
    transition: right var(--trans-slow);
    z-index: 1005;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
  }

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

  .nav-list {
    flex-direction: column;
    gap: 1.5rem;
  }

  .nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1004;
    opacity: 0;
    visibility: hidden;
    transition: all var(--trans-base);
  }

  .nav-overlay.active {
    opacity: 1;
    visibility: visible;
  }

  .burger.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
  }

  .burger.active span:nth-child(2) {
    opacity: 0;
  }

  .burger.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
  }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .form-row {
    grid-template-columns: 1fr !important;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.25rem;
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
  }

  .section-title {
    font-size: 2rem;
  }

  .contact-form-wrap {
    padding: 1.5rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}