:root {
  --primary: #2BBCB3;
  --primary-dark: #1E9E96;
  --primary-light: #E8F8F7;
  --dark: #1A1A2E;
  --dark-lighter: #16213E;
  --text: #333333;
  --text-light: #6B7280;
  --white: #FFFFFF;
  --bg-light: #F8FFFE;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
  --radius: 12px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── HEADER ─── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition);
  background: transparent;
}

.header.scrolled {
  background: rgba(26, 26, 46, 0.95);
  backdrop-filter: blur(12px);
  padding: 10px 0;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  height: 50px;
  width: auto;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
  transition: transform var(--transition);
}

.logo img:hover {
  transform: scale(1.05);
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav a {
  color: var(--white);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 8px 20px;
  border-radius: 8px;
  transition: all var(--transition);
  position: relative;
}

.nav a:hover {
  background: rgba(43, 188, 179, 0.15);
  color: var(--primary);
}

.nav a.cta-nav {
  background: var(--primary);
  color: var(--white);
  font-weight: 600;
}

.nav a.cta-nav:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(43, 188, 179, 0.4);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
  z-index: 1001;
}

.mobile-toggle span {
  width: 26px;
  height: 2.5px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ─── HERO ─── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.35);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(26, 26, 46, 0.85) 0%,
    rgba(30, 158, 150, 0.4) 100%
  );
}

.hero-content {
  text-align: center;
  color: var(--white);
  max-width: 800px;
  padding: 120px 24px 80px;
  animation: fadeInUp 1s ease-out;
}

.hero-badge {
  display: inline-block;
  background: rgba(43, 188, 179, 0.2);
  border: 1px solid rgba(43, 188, 179, 0.4);
  color: var(--primary);
  padding: 6px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero h1 {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.hero h1 span {
  color: var(--primary);
}

.hero p {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(43, 188, 179, 0.4);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(43, 188, 179, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(43, 188, 179, 0.1);
}

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-indicator svg {
  width: 28px;
  height: 28px;
  color: rgba(255, 255, 255, 0.6);
}

/* ─── SECTIONS ─── */
section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header .label {
  display: inline-block;
  color: var(--primary);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-header h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* ─── SERVICES ─── */
#services {
  background: var(--bg-light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 80px;
}

.service-card {
  background: var(--white);
  padding: 40px 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: all var(--transition);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-dark));
  transform: scaleX(0);
  transition: transform var(--transition);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  transition: all var(--transition);
}

.service-card:hover .service-icon {
  background: var(--primary);
  transform: scale(1.1);
}

.service-icon svg {
  width: 32px;
  height: 32px;
  color: var(--primary);
  transition: color var(--transition);
}

.service-card:hover .service-icon svg {
  color: var(--white);
}

.service-card h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.service-card p {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ─── DETAIL SECTION ─── */
.detail-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.detail-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.detail-image img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: center;
  transition: transform 0.6s ease;
}

.detail-image:hover img {
  transform: scale(1.05);
}

.detail-content h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 20px;
  line-height: 1.3;
}

.detail-content p {
  color: var(--text-light);
  margin-bottom: 24px;
  font-size: 1.05rem;
}

.check-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 1rem;
  color: var(--text);
}

.check-list li svg {
  width: 22px;
  height: 22px;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ─── STATS ─── */
.stats-bar {
  background: var(--dark);
  padding: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item h4 {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 8px;
}

.stat-item p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  font-weight: 500;
}

/* ─── REALISATIONS ─── */
#realisations {
  background: var(--white);
  overflow: hidden;
}

.gallery-track {
  display: flex;
  gap: 24px;
  animation: scrollGallery 30s linear infinite;
  width: max-content;
}

.gallery-track:hover {
  animation-play-state: paused;
}

.gallery-item {
  flex-shrink: 0;
  width: 380px;
  height: 280px;
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

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

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(26, 26, 46, 0.85) 0%,
    transparent 60%
  );
  display: flex;
  align-items: flex-end;
  padding: 24px;
  opacity: 0;
  transition: opacity var(--transition);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-overlay span {
  color: var(--white);
  font-weight: 600;
  font-size: 1rem;
}

/* ─── WHY SECTION ─── */
#pourquoi {
  background: var(--bg-light);
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.why-content .why-item {
  display: flex;
  gap: 20px;
  margin-bottom: 32px;
}

.why-number {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.why-text h4 {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
}

.why-text p {
  color: var(--text-light);
  font-size: 0.95rem;
}

.why-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.why-image img {
  width: 100%;
  height: 500px;
  object-fit: cover;
}

/* ─── CONTACT ─── */
#contact {
  background: var(--white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-info h3 {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}

.contact-info > p {
  color: var(--text-light);
  font-size: 1.05rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-item-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-item-icon svg {
  width: 22px;
  height: 22px;
  color: var(--primary);
}

.contact-item-text h4 {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--dark);
  margin-bottom: 4px;
}

.contact-item-text p,
.contact-item-text a {
  color: var(--text-light);
  font-size: 0.95rem;
}

.contact-item-text a:hover {
  color: var(--primary);
}

.contact-form {
  background: var(--bg-light);
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--dark);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #E5E7EB;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text);
  background: var(--white);
  transition: all var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(43, 188, 179, 0.15);
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #9CA3AF;
}

.contact-form .btn {
  width: 100%;
  justify-content: center;
  padding: 16px;
  font-size: 1.05rem;
}

/* ─── FOOTER ─── */
.footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 48px 0 24px;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 24px;
}

.footer-logo img {
  height: 40px;
  filter: brightness(1.2);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  transition: color var(--transition);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.5);
}

/* ─── BACK TO TOP ─── */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(43, 188, 179, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(43, 188, 179, 0.5);
}

.back-to-top svg {
  width: 22px;
  height: 22px;
}

/* ─── ANIMATIONS ─── */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-12px);
  }
  60% {
    transform: translateX(-50%) translateY(-6px);
  }
}

@keyframes scrollGallery {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .detail-section,
  .why-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .gallery-item {
    width: 320px;
    height: 240px;
  }
}

@media (max-width: 768px) {
  section {
    padding: 64px 0;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--dark);
    flex-direction: column;
    align-items: stretch;
    padding: 100px 32px 32px;
    gap: 4px;
    transition: right var(--transition);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.2);
  }

  .nav.open {
    right: 0;
  }

  .nav a {
    padding: 14px 20px;
    font-size: 1rem;
    border-radius: 8px;
  }

  .mobile-toggle {
    display: flex;
  }

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

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .stat-item h4 {
    font-size: 2rem;
  }

  .gallery-item {
    width: 280px;
    height: 200px;
  }

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

  .contact-form {
    padding: 24px;
  }

  .hero-content {
    padding: 100px 16px 60px;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

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

  .detail-image img {
    height: auto;
    aspect-ratio: 16 / 9;
  }

  .why-image img {
    height: 350px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }

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

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .section-header h2 {
    font-size: 1.6rem;
  }

  .gallery-item {
    width: 260px;
    height: 180px;
  }
}