/* ===================================
   QUUBE×IA SANTÉ - DESIGN INSPIRÉ QUUBE.FR
   Grandes formes géométriques + Typographie massive
   =================================== */

/* === RESET & BASE === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* PALETTE OFFICIELLE QUUBE 2024 */
  --color-noir: #000000;
  --color-gris: #F1F1F1;
  --color-blanc: #FFFFFF;
  
  /* Accent colors - max 2 par section */
  --color-jaune: #FCF474;
  --color-rouge: #F96566;
  --color-violet: #7E71C4;
  --color-bleu: #95CFFF;
  --color-vert: #37CAB0;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Layout */
  --max-width: 1400px;
  --section-spacing: clamp(80px, 10vw, 160px);
  --card-gap: 40px;
}

/* === BODY === */
body {
  font-family: var(--font-primary);
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-noir);
  background-color: var(--color-gris);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* === TYPOGRAPHIE MASSIVE (STYLE QUUBE.FR) === */
h1 {
  font-size: clamp(3rem, 10vw, 8rem);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

h2 {
  font-size: clamp(2.5rem, 7vw, 6rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: -0.025em;
  text-transform: uppercase;
  margin-bottom: 20px;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

p {
  font-size: 1.125rem;
  line-height: 1.7;
  font-weight: 400;
}

.subtitle {
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1.5;
  color: rgba(0,0,0,0.8);
}

/* === CONTAINER === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(24px, 5vw, 80px);
}

/* === HEADER NAVIGATION === */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--color-blanc);
  z-index: 1000;
  border-bottom: 1px solid rgba(0,0,0,0.08);
  padding: 20px 0;
}

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

.logo {
  display: flex;
  align-items: baseline;
  gap: 0.3em;
  text-decoration: none;
  color: var(--color-noir);
  font-family: var(--font-primary);
  transition: opacity 0.2s;
}

.logo:hover {
  opacity: 0.7;
}

.logo-main {
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.logo-sub {
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-noir);
}

nav {
  display: flex;
  gap: 48px;
  align-items: center;
}

nav a {
  color: var(--color-noir);
  text-decoration: none;
  font-weight: 500;
  font-size: 16px;
  transition: opacity 0.2s;
}

nav a:hover {
  opacity: 0.6;
}

.btn-contact {
  background: var(--color-noir);
  color: var(--color-blanc);
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  transition: transform 0.2s;
}

.btn-contact:hover {
  transform: translateY(-2px);
  opacity: 1;
}

.mobile-menu-toggle {
  display: none;
}

/* === SECTIONS WITH GEOMETRIC SHAPES === */
section {
  position: relative;
  padding: var(--section-spacing) 0;
}

/* Hero avec forme géométrique */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
  background: var(--color-gris);
}

/* Grande forme géométrique background - style Marie-Louise */
.hero::before {
  content: '';
  position: absolute;
  top: 10%;
  right: -10%;
  width: 60%;
  height: 80%;
  background: linear-gradient(135deg, var(--color-violet) 0%, var(--color-bleu) 100%);
  transform: rotate(-8deg) skewY(-3deg);
  border-radius: 40px;
  z-index: 0;
  opacity: 0.95;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.hero h1 {
  color: var(--color-noir);
  margin-bottom: 32px;
}

.hero-subtitle {
  font-size: 1.75rem;
  line-height: 1.5;
  margin-bottom: 48px;
  max-width: 700px;
  font-weight: 400;
  color: rgba(0,0,0,0.85);
}

.hero-cta {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

/* === BUTTONS === */
.btn {
  display: inline-block;
  padding: 16px 40px;
  font-size: 1.125rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--color-noir);
  color: var(--color-blanc);
  border-color: var(--color-noir);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.btn-secondary {
  background: transparent;
  color: var(--color-noir);
  border: 2px solid var(--color-noir);
}

.btn-secondary:hover {
  background: var(--color-noir);
  color: var(--color-blanc);
}

.btn-large {
  padding: 20px 48px;
  font-size: 1.25rem;
}

/* === CARDS WITH GEOMETRIC BACKGROUNDS === */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--card-gap);
  margin-top: 64px;
}

.card {
  background: var(--color-blanc);
  padding: 48px 40px;
  border-radius: 12px;
  position: relative;
  transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}

/* Bordure colorée gauche */
.card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  border-radius: 12px 0 0 12px;
  background: var(--card-color, var(--color-violet));
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.12);
}

.card:nth-child(1) { --card-color: var(--color-violet); }
.card:nth-child(2) { --card-color: var(--color-bleu); }
.card:nth-child(3) { --card-color: var(--color-vert); }
.card:nth-child(4) { --card-color: var(--color-jaune); }
.card:nth-child(5) { --card-color: var(--color-rouge); }

.card-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--card-color), rgba(0,0,0,0.05));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 32px;
}

.card-title {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--color-noir);
}

.card-description {
  color: rgba(0,0,0,0.75);
  line-height: 1.7;
  margin-bottom: 20px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  color: var(--color-noir);
  font-weight: 600;
  text-decoration: none;
  gap: 8px;
  transition: gap 0.3s;
}

.card-link:hover {
  gap: 12px;
}

/* Card signature avec badge */
.card-signature {
  border: 3px solid var(--color-jaune);
  background: linear-gradient(135deg, rgba(252,244,116,0.1), var(--color-blanc));
  position: relative;
}

.card-signature::before {
  display: none;
}

.card-badge {
  position: absolute;
  top: -16px;
  right: 32px;
  background: var(--color-jaune);
  color: var(--color-noir);
  padding: 8px 20px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* === SECTION AVEC FORME GÉOMÉTRIQUE === */
.section-light {
  background: var(--color-gris);
  position: relative;
}

.section-alt {
  background: var(--color-blanc);
  position: relative;
  overflow: hidden;
}

/* Grande forme background pour sections alternées */
.section-alt::before {
  content: '';
  position: absolute;
  top: -20%;
  left: -15%;
  width: 50%;
  height: 140%;
  background: linear-gradient(135deg, var(--color-vert) 0%, var(--color-bleu) 100%);
  transform: rotate(12deg);
  border-radius: 60px;
  opacity: 0.08;
  z-index: 0;
}

.section-header {
  text-align: left;
  margin-bottom: 64px;
  max-width: 900px;
}

.section-title {
  color: var(--color-noir);
  margin-bottom: 24px;
}

.section-subtitle {
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1.5;
  color: rgba(0,0,0,0.7);
}

/* === VALUE ITEMS === */
.values-grid,
.value-items {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  margin-top: 64px;
}

.value-item {
  text-align: center;
}

.value-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--color-violet), var(--color-bleu));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 36px;
  color: var(--color-blanc);
}

.value-item h3,
.value-item h4,
.value-title {
  font-size: 1.5rem;
  margin-bottom: 12px;
  font-weight: 700;
}

.value-description {
  color: rgba(0,0,0,0.7);
  line-height: 1.6;
}

/* === HERO INTERIOR === */
.hero-interior {
  min-height: 50vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  position: relative;
  background: var(--color-noir);
  overflow: hidden;
}

/* Forme géométrique pour hero interior */
.hero-interior::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 70%;
  height: 160%;
  background: linear-gradient(135deg, var(--color-violet) 0%, var(--color-bleu) 50%, var(--color-vert) 100%);
  transform: rotate(-15deg);
  opacity: 0.2;
  border-radius: 80px;
}

.hero-interior h1 {
  color: var(--color-blanc);
  position: relative;
  z-index: 1;
}

.hero-interior .hero-subtitle {
  color: rgba(255,255,255,0.9);
  position: relative;
  z-index: 1;
}

/* === OFFER CARDS (PAGE SERVICES) === */
.offer-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 48px;
  margin-top: 64px;
}

.offer-card {
  background: var(--color-blanc);
  padding: 48px;
  border-radius: 16px;
  box-shadow: 0 6px 24px rgba(0,0,0,0.08);
  position: relative;
  transition: all 0.3s;
}

.offer-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 8px;
  border-radius: 16px 16px 0 0;
  background: var(--card-color, var(--color-violet));
}

.offer-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.15);
}

.offer-card-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--color-noir);
}

.offer-duration {
  color: var(--card-color, var(--color-violet));
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 24px;
  display: block;
}

.offer-description {
  font-size: 1.125rem;
  line-height: 1.7;
  margin-bottom: 32px;
  color: rgba(0,0,0,0.75);
}

.offer-list {
  list-style: none;
  margin-bottom: 32px;
}

.offer-list li {
  padding-left: 32px;
  position: relative;
  margin-bottom: 12px;
  font-size: 1rem;
  line-height: 1.6;
}

.offer-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--card-color, var(--color-violet));
  font-weight: 700;
  font-size: 1.25rem;
}

/* === ACCORDION (CAS D'USAGE) - Native <details> === */
.accordion-wrapper {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.accordion-item,
.accordion-category {
  background: var(--color-blanc);
  border-radius: 12px;
  border: 2px solid rgba(0,0,0,0.06);
  overflow: hidden;
  transition: all 0.3s;
}

.accordion-item:hover,
.accordion-category:hover {
  border-color: rgba(0,0,0,0.12);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

/* Summary = Header */
.accordion-header,
.accordion-category-header {
  padding: 32px 40px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--color-gris);
  transition: background 0.3s;
  list-style: none; /* Remove default marker */
}

/* Hide default marker */
.accordion-category > summary {
  list-style: none;
}

.accordion-category > summary::-webkit-details-marker {
  display: none;
}

.accordion-header:hover,
.accordion-category-header:hover {
  background: rgba(241,241,241,0.5);
}

.accordion-title,
.accordion-category-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-noir);
  margin: 0;
}

.accordion-category-subtitle {
  font-size: 1rem;
  color: rgba(0,0,0,0.6);
  font-weight: 400;
  margin: 8px 0 0 0;
}

/* SVG Icon rotation */
.accordion-icon {
  width: 32px;
  height: 32px;
  transition: transform 0.3s;
  flex-shrink: 0;
}

details[open] .accordion-icon {
  transform: rotate(180deg);
}

/* Content area */
.accordion-content {
  padding: 40px;
  background: var(--color-blanc);
}

/* Use case detail styling */
.use-case-detail h4 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-violet);
  margin: 32px 0 16px 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.use-case-detail h4:first-child {
  margin-top: 0;
}

.use-case-detail p {
  margin-bottom: 20px;
  line-height: 1.8;
}

.use-case-detail ul {
  list-style: none;
  padding: 0;
  margin: 16px 0;
}

.use-case-detail ul li {
  padding-left: 32px;
  position: relative;
  margin-bottom: 12px;
  line-height: 1.7;
}

.use-case-detail ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-violet);
  font-weight: 700;
  font-size: 1.25rem;
}

.use-case-detail ul li strong {
  color: var(--color-noir);
  font-weight: 700;
}

/* === FOUNDER SECTION === */
.section-founder {
  background: var(--color-blanc);
  position: relative;
  overflow: hidden;
}

/* Forme géométrique pour section fondateur */
.section-founder::before {
  content: '';
  position: absolute;
  bottom: -20%;
  right: -10%;
  width: 50%;
  height: 120%;
  background: linear-gradient(135deg, var(--color-jaune) 0%, var(--color-vert) 100%);
  transform: rotate(-10deg);
  opacity: 0.06;
  border-radius: 60px;
}

.founder-content {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 64px;
  align-items: start;
  position: relative;
  z-index: 1;
}

.founder-image img {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}

.founder-bio h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 8px;
  text-transform: none;
}

.founder-bio h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-violet);
  margin-bottom: 32px;
  text-transform: none;
}

.founder-bio p {
  margin-bottom: 24px;
  font-size: 1.125rem;
  line-height: 1.8;
}

/* === VISION GRID === */
.vision-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-top: 64px;
}

.vision-card {
  background: var(--color-blanc);
  padding: 40px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.06);
  transition: all 0.3s;
}

.vision-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 36px rgba(0,0,0,0.12);
}

.vision-icon {
  width: 64px;
  height: 64px;
  margin-bottom: 24px;
  color: var(--color-violet);
}

.vision-card h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
  text-transform: none;
}

/* === SECTORS LIST === */
.sectors-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin-top: 48px;
}

.sector-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--color-blanc);
  border-radius: 8px;
  transition: all 0.3s;
}

.sector-item:hover {
  transform: translateX(8px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

.sector-icon {
  width: 32px;
  height: 32px;
  color: var(--color-vert);
  flex-shrink: 0;
}

.sector-item span {
  font-size: 1rem;
  line-height: 1.5;
  color: rgba(0,0,0,0.85);
}

/* === TIMELINE === */
.methodology-timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
  margin-top: 64px;
}

.timeline-item {
  text-align: center;
}

.timeline-number {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--color-violet), var(--color-bleu));
  color: var(--color-blanc);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 800;
  margin: 0 auto 24px;
}

.timeline-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
  text-transform: none;
}

.timeline-description {
  font-size: 1rem;
  line-height: 1.6;
  color: rgba(0,0,0,0.75);
}

/* === USE CASES GRID === */
.use-cases-grid {
  display: grid;
  gap: 32px;
  margin-top: 64px;
}

.use-cases-grouped {
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
}

.use-case-card {
  background: var(--color-blanc);
  padding: 40px;
  border-radius: 12px;
  text-decoration: none;
  transition: all 0.3s;
  display: block;
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

.use-case-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.12);
}

.use-case-card-large {
  padding: 48px 40px;
}

.use-case-tag {
  display: inline-block;
  padding: 8px 16px;
  background: linear-gradient(135deg, var(--color-violet), var(--color-bleu));
  color: var(--color-blanc);
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.use-case-card:nth-child(1) .use-case-tag {
  background: linear-gradient(135deg, var(--color-violet), var(--color-bleu));
}

.use-case-card:nth-child(2) .use-case-tag {
  background: linear-gradient(135deg, var(--color-bleu), var(--color-vert));
}

.use-case-card:nth-child(3) .use-case-tag {
  background: linear-gradient(135deg, var(--color-vert), var(--color-jaune));
}

.use-case-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-noir);
  margin-bottom: 16px;
  line-height: 1.3;
}

.use-case-description {
  font-size: 1rem;
  line-height: 1.7;
  color: rgba(0,0,0,0.7);
}

.section-cta {
  text-align: center;
  margin-top: 64px;
}

/* === CTA SECTION === */
.cta-section,
.section-cta-final {
  background: linear-gradient(135deg, var(--color-violet) 0%, var(--color-bleu) 100%);
  position: relative;
  overflow: hidden;
}

/* Forme géométrique pour CTA */
.section-cta-final::before {
  content: '';
  position: absolute;
  top: -40%;
  left: -20%;
  width: 60%;
  height: 180%;
  background: rgba(255,255,255,0.1);
  transform: rotate(20deg);
  border-radius: 80px;
}

.cta-content {
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta-title {
  color: var(--color-blanc);
  margin-bottom: 24px;
}

.cta-subtitle {
  font-size: 1.5rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 48px;
}

.cta-content .btn-primary {
  background: var(--color-blanc);
  color: var(--color-noir);
}

.cta-content .btn-primary:hover {
  background: var(--color-jaune);
}

/* === FOOTER === */
footer {
  background: var(--color-noir);
  color: rgba(255,255,255,0.8);
  padding: 64px 0 32px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 64px;
  margin-bottom: 48px;
}

.footer-section h4 {
  color: var(--color-blanc);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-section a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  display: block;
  margin-bottom: 12px;
  transition: color 0.3s;
}

.footer-section a:hover {
  color: var(--color-blanc);
}

.footer-social {
  display: flex;
  gap: 16px;
  margin-top: 20px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}

.footer-social a:hover {
  background: var(--color-violet);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.5);
  font-size: 0.875rem;
}

/* === ANIMATIONS === */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s ease forwards;
}

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

.fade-in:nth-child(1) { animation-delay: 0.1s; }
.fade-in:nth-child(2) { animation-delay: 0.2s; }
.fade-in:nth-child(3) { animation-delay: 0.3s; }
.fade-in:nth-child(4) { animation-delay: 0.4s; }
.fade-in:nth-child(5) { animation-delay: 0.5s; }

/* === RESPONSIVE === */
@media (max-width: 968px) {
  h1 { font-size: clamp(2.5rem, 8vw, 5rem); }
  h2 { font-size: clamp(2rem, 6vw, 4rem); }
  
  .hero::before {
    width: 80%;
    right: -20%;
  }
  
  nav {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: block;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
  }
  
  .founder-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .cards-grid,
  .offer-cards-grid {
    grid-template-columns: 1fr;
  }
  
  .methodology-timeline {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  :root {
    --section-spacing: 60px;
  }
  
  .container {
    padding: 0 20px;
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
    text-align: center;
  }
}