/* Variables Globales Système */
:root {
  --bg-color: #fcfcfd;
  --text-color: #1a202c;
  --primary-color: #0f172a;
  --accent-color: #2563eb;
  --secondary-bg: rgba(255, 255, 255, 0.4);
  --border-color: rgba(15, 23, 42, 0.08);
  --font-main: 'Montserrat', sans-serif;
  --glass-blur: blur(12px);
  --btn-radius: 30px;
}

[data-theme="dark"] {
  --bg-color: #030712;
  --text-color: #f3f4f6;
  --primary-color: #f9fafb;
  --accent-color: #4f8dd8;
  --secondary-bg: rgba(17, 24, 39, 0.4);
  --border-color: rgba(243, 244, 246, 0.08);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  transition: background-color 0.4s ease, border-color 0.4s ease;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Page Morphing Overlay Animation */
.page-transition-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--primary-color);
  z-index: 9999;
  pointer-events: none;
  transform-origin: bottom center;
  animation: pageMorph 0.8s cubic-bezier(0.85, 0, 0.15, 1) forwards;
}

@keyframes pageMorph {
  0% {
    transform: scaleY(1);
  }

  100% {
    transform: scaleY(0);
  }
}

/* Barre de Navigation Épurée */
header.glassmorphism {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  border-bottom: 1px solid var(--border-color);
  background: var(--secondary-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  z-index: 1000;
}

.logo {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary-color);
  text-decoration: none;
  letter-spacing: 1px;
}

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

nav a.nav-link {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 400;
  font-size: 0.9rem;
  transition: color 0.3s;
}

nav a.nav-link:hover,
nav a.nav-link.active {
  color: var(--accent-color);
}

/* Boutons */
.btn-contact {
  border: 1.5px solid var(--primary-color);
  padding: 0.5rem 1.5rem;
  border-radius: var(--btn-radius);
  text-decoration: none;
  font-size: 0.85rem;
  color: var(--text-color);
  transition: all 0.3s ease;
}

.btn-contact:hover {
  background: var(--primary-color);
  color: var(--bg-color) !important;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--bg-color);
  border: none;
  padding: 0.8rem 2.2rem;
  border-radius: var(--btn-radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  display: inline-block;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary:hover {
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

#theme-toggle {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
}

/* Hero & Mesh Gradient */
.hero-mesh {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 10rem 5% 5rem 5%;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 50%, #f1f5f9 100%);
  background-size: 400% 400%;
  animation: meshMovement 15s ease infinite;
}

[data-theme="dark"] .hero-mesh {
  background: linear-gradient(135deg, #090d16 0%, #111827 50%, #030712 100%);
}

@keyframes meshMovement {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

.hero-content {
  max-width: 800px;
  z-index: 10;
}

.kinetic-text span {
  display: block;
  font-size: 4.5rem;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -2px;
  background: linear-gradient(to right, var(--primary-color), var(--accent-color));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  opacity: 0;
  transform: translateY(30px);
  animation: kineticReveal 0.8s cubic-bezier(0.85, 0, 0.15, 1) forwards;
}

.kinetic-text span:nth-child(2) {
  animation-delay: 0.2s;
}

.kinetic-text span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes kineticReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-content p {
  margin: 2rem 0 4rem 0;
  font-size: 1.1rem;
  opacity: 0.8;
}

/* Marquee / Bandeau Défilant */
.marquee-container {
  overflow: hidden;
  white-space: nowrap;
  display: flex;
  background: var(--primary-color);
  color: var(--bg-color);
  padding: 1.2rem 0;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 2px;
}

.marquee-content {
  display: flex;
  flex-shrink: 0;
  gap: 3rem;
  padding-right: 3rem;
  animation: marquee 25s linear infinite;
}

@keyframes marquee {
  0% {
    transform: translateX(0%);
  }

  100% {
    transform: translateX(-100%);
  }
}

/* Bento Grid System */
.about-section {
  padding: 8rem 5%;
}

.section-title {
  font-size: 2.25rem;
  text-align: center;
  margin-bottom: 4rem;
  font-weight: 600;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.bento-item {
  background: var(--secondary-bg);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  border-radius: 24px;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), border-color 0.4s;
}

.bento-item:hover {
  transform: translateY(-5px);
  border-color: var(--accent-color);
}

.bento-large,
.bento-medium {
  grid-column: span 2;
}

.bento-highlight {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08) 0%, var(--secondary-bg) 100%);
}

.bento-item h3 {
  margin-bottom: 1rem;
  font-size: 1.4rem;
  font-weight: 600;
}

.bento-item p {
  opacity: 0.8;
  font-size: 0.95rem;
}

/* Portrait Dirigeant */
.founder-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 6rem;
  text-align: center;
}

.founder-portrait-container {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--accent-color);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  margin-bottom: 1.5rem;
  transition: transform 0.4s ease;
}

.founder-portrait-container:hover {
  transform: scale(1.05);
}

.founder-portrait {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.founder-name {
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.founder-title {
  font-size: 0.95rem;
  opacity: 0.7;
}

/* Stacking Cards Section */
.stacking-section {
  padding: 6rem 5%;
  background: var(--secondary-bg);
}

.stacking-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.stack-card {
  position: sticky;
  top: 120px;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  padding: 3rem;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.01);
}

.card-1 {
  transform: scale(0.96);
}

.card-2 {
  transform: scale(0.98);
}

.card-3 {
  transform: scale(1);
}

/* Pages Réalisations / Onglets */
.projects-page {
  padding: 8rem 5% 4rem 5%;
}

.projects-page h1 {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 3rem;
}

.tabs {
  display: flex;
  gap: 1rem;
  justify-content: flex-start;
  margin-bottom: 3rem;
  overflow-x: auto;
  padding: 0.5rem;
  width: 100%;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.tabs::-webkit-scrollbar {
  height: 4px;
}

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

@media (min-width: 768px) {
  .tabs {
    justify-content: center;
  }
}

.tab-btn {
  padding: 0.6rem 1.8rem;
  background: var(--secondary-bg);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  cursor: pointer;
  border-radius: var(--btn-radius);
  font-family: var(--font-main);
  font-weight: 600;
  font-size: 0.85rem;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.tab-btn:hover,
.tab-btn.active {
  background: var(--primary-color);
  color: var(--bg-color);
  border-color: var(--primary-color);
}

/* Conteneur de détails des projets */
.project-details-container {
  max-width: 1000px;
  margin: 0 auto;
  background: var(--secondary-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  padding: 3rem;
  border-radius: 24px;
  position: relative;
}

.btn-more-info {
  position: absolute;
  bottom: 3rem;
  right: 3rem;
  background: transparent;
  border: none;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-color);
  text-decoration: underline;
  cursor: pointer;
}

/* Carrousel Visuel */
.carousel-container {
  position: relative;
  width: 100%;
  height: 500px;
  overflow: hidden;
  border-radius: 16px;
  margin-bottom: 2rem;
}

#carousel-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 0.2s ease;
}

.carousel-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.prev-btn {
  left: 20px;
}

.next-btn {
  right: 20px;
}

.carousel-dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
}

.dot.active {
  background: #fff;
  transform: scale(1.2);
}

/* Structure Formulaire & Cartes Coordonnées */
.contact-section {
  padding: 8rem 5%;
}

.contact-cards-container {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.contact-info-card {
  background: var(--secondary-bg);
  border: 1px solid var(--border-color);
  padding: 1.5rem 2rem;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 260px;
}

.contact-icon {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 15px;
}

.contact-icon-img {
  width: 35px;
  height: auto;
  object-fit: contain;
}

.contact-info-card h4 {
  font-size: 0.85rem;
  opacity: 0.5;
  margin-bottom: 0.4rem;
  text-transform: uppercase;
}

.contact-info-card a {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-color);
  text-decoration: none;
}

.contact-info-card a:hover {
  color: var(--accent-color);
}

.contact-form {
  max-width: 650px;
  margin: 0 auto;
  padding: 3rem;
  border-radius: 24px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  background: var(--secondary-bg);
  border: 1px solid var(--border-color);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 1rem 1.5rem;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-main);
  outline: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--accent-color);
}

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

/* Succès Formulaire */
.form-success-box {
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid var(--accent-color);
  padding: 1.5rem;
  border-radius: 12px;
  animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Lightbox Modal */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(3, 7, 18, 0.95);
  z-index: 10000;
  justify-content: center;
  align-items: center;
}

.lightbox.active {
  display: flex;
}

.lightbox-content img {
  max-width: 85vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 8px;
}

.lightbox-close {
  position: absolute;
  top: 30px;
  right: 40px;
  color: #fff;
  font-size: 2.5rem;
  cursor: pointer;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  cursor: pointer;
}

.lightbox-prev {
  left: 40px;
}

.lightbox-next {
  right: 40px;
}

/* Scroll Reveal Classe Initiale */
.scroll-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Footer */
footer {
  text-align: center;
  padding: 4rem 5%;
  border-top: 1px solid var(--border-color);
  margin-top: 6rem;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-links a {
  color: var(--text-color);
  text-decoration: none;
  font-size: 0.85rem;
  opacity: 0.7;
  font-weight: 600;
}

.footer-links a:hover {
  opacity: 1;
  color: var(--accent-color);
}

footer p {
  font-size: 0.8rem;
  opacity: 0.5;
}

/* ==========================================================================
   DESIGN RESPONSIVE ENGINE (MOBILE & TABLETTES)
   ========================================================================== */

.hamburger-btn {
  display: none;
}

@media (max-width: 768px) {
  .kinetic-text span {
    font-size: 2.2rem !important;
    letter-spacing: -1px;
  }

  .hero-mesh {
    padding: 8rem 5% 4rem 5%;
  }

  .carousel-container {
    height: 320px;
  }

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

  .bento-large,
  .bento-medium {
    grid-column: span 1;
  }

  .project-details-container {
    padding: 1.5rem;
  }

  .btn-more-info {
    position: relative;
    bottom: 0;
    right: 0;
    margin-top: 1.5rem;
    display: inline-block;
  }

  .contact-form {
    padding: 1.5rem;
  }

  .lightbox-nav {
    display: none !important;
  }

  /* Masquage des flèches complexes sur mobile */

  /* Menu Hamburger & Navigation Mobile */
  header.glassmorphism {
    padding: 1rem 5% !important;
  }

  .header-controls {
    display: flex;
    align-items: center;
    gap: 20px;
  }

  .hamburger-btn {
    display: flex !important;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 16px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1010;
  }

  .hamburger-btn span {
    width: 100%;
    height: 2px;
    background-color: var(--text-color);
    border-radius: 2px;
    transition: all 0.3s ease;
  }

  .hamburger-btn.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .hamburger-btn.open span:nth-child(2) {
    opacity: 0;
  }

  .hamburger-btn.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  header.glassmorphism nav {
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    padding: 2rem 0;
    display: none;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
  }

  header.glassmorphism nav.open {
    display: block;
    animation: slideDown 0.3s ease forwards;
  }

  header.glassmorphism nav ul {
    flex-direction: column;
    gap: 1.5rem !important;
  }

  header.glassmorphism nav a.nav-link {
    font-size: 1.1rem;
  }

  /* Égalisation des bulles d'infos de contact sur mobile */
  .contact-cards-container {
    flex-direction: column;
    width: 100%;
    gap: 1rem;
  }

  .contact-info-card {
    width: 100% !important;
    min-height: 160px;
    justify-content: center;
    padding: 1.5rem !important;
  }

  .contact-info-card a {
    word-break: break-all;
    font-size: 0.95rem;
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}