/* =============================================
   TRANS BIO MÉDIC — CSS Principal
   ============================================= */

/* ---- Variables ---- */
:root {
  --color-primary: #002855;
  --color-primary-dark: #001a3a;
  --color-accent: #c0392b;
  --color-accent-light: #e74c3c;
  --color-white: #ffffff;
  --color-gray-100: #f4f6f9;
  --color-gray-200: #e8ecf0;
  --color-gray-400: #9aa5b4;
  --color-gray-700: #4a5568;
  --color-gray-900: #1a202c;

  --font-family: 'Inter', sans-serif;
  --border-radius: 12px;
  --border-radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
  --shadow-lg: 0 20px 50px rgba(0,0,0,0.15);
  --transition: 0.3s ease;
  --header-height: 70px;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-family);
  color: var(--color-gray-900);
  background: var(--color-white);
  line-height: 1.65;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

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

.section { padding: 96px 0; }
.section--gray { background: var(--color-gray-100); }

/* ---- Section Header ---- */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(192,57,43,0.10);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--color-gray-700);
  max-width: 560px;
  margin: 0 auto;
}

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

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}
.btn--primary:hover {
  background: var(--color-accent-light);
  border-color: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(192,57,43,0.30);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.6);
}
.btn--outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--color-white);
}

.btn--white {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}
.btn--white:hover {
  background: var(--color-gray-100);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

/* ---- COOKIE BANNER ---- */
.cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--color-primary-dark);
  color: var(--color-white);
  z-index: 9999;
  padding: 20px 24px;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.2);
  transform: translateY(100%);
  transition: transform 0.4s ease;
}
.cookie-banner.visible { transform: translateY(0); }

.cookie-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.cookie-content p {
  flex: 1;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.85);
  min-width: 250px;
}
.cookie-actions { display: flex; gap: 12px; flex-shrink: 0; }

.btn-cookie-settings {
  background: transparent;
  color: rgba(255,255,255,0.7);
  border: 1px solid rgba(255,255,255,0.3);
  padding: 10px 20px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all var(--transition);
}
.btn-cookie-settings:hover { color: white; border-color: white; }

.btn-cookie-accept {
  background: var(--color-accent);
  color: white;
  border: none;
  padding: 10px 24px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  transition: background var(--transition);
}
.btn-cookie-accept:hover { background: var(--color-accent-light); }

/* ---- HEADER / NAV ---- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}
.header.scrolled {
  background: var(--color-primary-dark);
  box-shadow: 0 2px 20px rgba(0,0,0,0.25);
}

.navbar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  margin-right: auto;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.logo-img {
  height: 21px;
  width: auto;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.18));
  transition: transform var(--transition);
}
.logo:hover .logo-img {
  transform: scale(1.04);
}
.logo-icon {
  width: 44px; height: 44px;
  background: var(--color-accent);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: white;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-main { font-size: 1rem; font-weight: 800; color: white; }
.logo-sub { font-size: 0.65rem; color: rgba(255,255,255,0.6); letter-spacing: 0.05em; }

/* Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  color: rgba(255,255,255,0.85);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 6px;
  transition: all var(--transition);
}
.nav-link:hover, .nav-link.active {
  color: white;
  background: rgba(255,255,255,0.12);
}
.nav-link--cta {
  background: var(--color-accent);
  color: white !important;
  padding: 8px 16px;
  margin-left: 8px;
}
.nav-link--cta:hover {
  background: var(--color-accent-light) !important;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: white;
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- HERO ---- */
.hero {
  min-height: 100vh;
  background: url('../images/Chaine.jpg') center center / cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-height) + 40px) 24px 80px;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,20,50,0.60) 0%, rgba(0,40,85,0.50) 60%, rgba(10,30,70,0.45) 100%);
  z-index: 1;
}
.hero-bg, .hero-content, .hero-scroll {
  position: relative;
  z-index: 2;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.hero-bg::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(192,57,43,0.15) 0%, transparent 70%);
  top: -100px; right: -100px;
  border-radius: 50%;
}
.hero-bg::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.04) 0%, transparent 70%);
  bottom: 0; left: -50px;
  border-radius: 50%;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 820px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.9);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 8px 18px;
  border-radius: 50px;
  margin-bottom: 32px;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  color: white;
  line-height: 1.15;
  margin-bottom: 24px;
}
.hero-title--accent { color: #e87c75; }

.hero-desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.75);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

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

.hero-scroll {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: bounce 2s ease-in-out infinite;
  cursor: pointer;
}
.hero-scroll i { font-size: 1rem; }

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ---- STATS ---- */
.stats {
  background: var(--color-primary);
  padding: 60px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.stat-card {
  text-align: center;
  padding: 32px 24px;
  border-right: 1px solid rgba(255,255,255,0.1);
  color: white;
}
.stat-card:last-child { border-right: none; }

.stat-number {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 800;
  color: white;
  line-height: 1;
}
.stat-unit {
  font-size: 1.4rem;
  font-weight: 700;
  color: #e87c75;
  margin-left: 2px;
}
.stat-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  margin-top: 8px;
}

/* ---- ABOUT ---- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-visual { position: relative; }
.about-img-wrapper { position: relative; }
.about-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--border-radius-lg);
  display: block;
  box-shadow: var(--shadow-lg);
}
.about-img-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--color-primary) 0%, #1a4a8a 100%);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
  color: rgba(255,255,255,0.15);
}
.about-badge-float {
  position: absolute;
  bottom: -24px; right: -24px;
  background: white;
  border-radius: var(--border-radius);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-lg);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
}
.about-badge-float i {
  color: var(--color-accent);
  font-size: 1.4rem;
}

.about-text { padding: 20px 0; }
.about-text p {
  color: var(--color-gray-700);
  margin-bottom: 16px;
}
.about-list {
  margin: 24px 0 32px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.about-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--color-gray-700);
}
.about-list li i {
  color: var(--color-accent);
  font-size: 0.85rem;
  flex-shrink: 0;
}

/* ---- SOLUTIONS ---- */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.solution-card {
  background: white;
  border-radius: var(--border-radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--color-gray-200);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.solution-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.solution-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--color-primary), #1a4a8a);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  color: white;
  font-size: 1.3rem;
  margin-bottom: 4px;
}
.solution-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
}
.solution-card p {
  font-size: 0.9rem;
  color: var(--color-gray-700);
  flex: 1;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-accent);
  font-size: 0.875rem;
  font-weight: 600;
  margin-top: 8px;
  transition: gap var(--transition);
}
.card-link:hover { gap: 10px; }

/* ---- QUALITÉ ---- */
.quality-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.quality-text p {
  color: var(--color-gray-700);
  margin-bottom: 24px;
}
.quality-certifs {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}
.certif-badge {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--color-gray-100);
  border-radius: 10px;
  padding: 16px 20px;
  transition: all var(--transition);
}
.certif-badge:hover { background: var(--color-gray-200); }
.certif-badge i {
  font-size: 1.5rem;
  color: var(--color-accent);
  width: 32px;
  text-align: center;
}
.certif-badge strong {
  display: block;
  font-size: 0.95rem;
  color: var(--color-primary);
}
.certif-badge span {
  font-size: 0.8rem;
  color: var(--color-gray-400);
}

.quality-img-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--color-accent) 0%, #8b1a1a 100%);
  border-radius: var(--border-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8rem;
  color: rgba(255,255,255,0.15);
}

/* ---- PARTNERS ---- */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.partner-item {
  background: white;
  border-radius: var(--border-radius);
  padding: 28px 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition);
  cursor: default;
}
.partner-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}
.partner-item i {
  font-size: 2rem;
  color: var(--color-primary);
}
.partner-item span {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-gray-700);
  text-align: center;
  line-height: 1.3;
}

/* ---- RECRUITMENT CTA ---- */
.recruitment-card {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  border-radius: var(--border-radius-lg);
  padding: 56px 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.recruitment-card h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: white;
  margin-bottom: 12px;
}
.recruitment-card p {
  color: rgba(255,255,255,0.75);
  max-width: 500px;
}

/* ---- FOOTER ---- */
.footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.75);
  padding-top: 72px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.55);
  margin-bottom: 20px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.footer-social a {
  width: 38px; height: 38px;
  border-radius: 8px;
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.7);
  transition: all var(--transition);
}
.footer-social a:hover {
  background: var(--color-accent);
  color: white;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: white;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: white; }

.footer-contact { display: flex; flex-direction: column; gap: 10px; }
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
}
.footer-contact li i {
  color: var(--color-accent);
  margin-top: 3px;
  width: 14px;
  flex-shrink: 0;
}
.footer-contact li a { color: rgba(255,255,255,0.55); transition: color var(--transition); }
.footer-contact li a:hover { color: white; }

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
}

/* ========================
   PAGE INTÉRIEURE — Layout
   ======================== */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  padding: calc(var(--header-height) + 60px) 24px 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(192,57,43,0.12) 0%, transparent 70%);
  top: -100px; right: -100px;
  border-radius: 50%;
}
.page-hero-content { position: relative; z-index: 2; }
.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: white;
  margin-bottom: 16px;
}
.page-hero p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.75);
  max-width: 600px;
  margin: 0 auto;
}
.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}
.breadcrumb a { color: rgba(255,255,255,0.6); transition: color var(--transition); }
.breadcrumb a:hover { color: white; }
.breadcrumb i { font-size: 0.6rem; }

/* ========================
   RESPONSIVE
   ======================== */
@media (max-width: 1100px) {
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-card { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); }
  .stat-card:nth-child(odd) { border-right: 1px solid rgba(255,255,255,0.1); }
  .about-grid, .quality-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-visual { order: -1; }
  .quality-visual { display: none; }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .recruitment-card { flex-direction: column; text-align: center; padding: 40px 32px; }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-links {
    position: fixed;
    top: var(--header-height); left: 0; right: 0;
    background: var(--color-primary-dark);
    flex-direction: column;
    padding: 24px;
    gap: 8px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    z-index: 999;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  .nav-link { width: 100%; padding: 12px 16px; }
  .nav-link--cta { text-align: center; margin-left: 0; margin-top: 8px; }
  .solutions-grid { grid-template-columns: 1fr; }
  .partners-grid { grid-template-columns: repeat(2, 1fr); }
  .about-badge-float { display: none; }
  .section { padding: 64px 0; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; align-items: center; }
  .recruitment-card { padding: 32px 24px; }
}

/* ========================
   ANIMATIONS
   ======================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }
.fade-in-delay-5 { transition-delay: 0.5s; }