:root {
  --color-primary: #FF6B35;
  --color-secondary: #F7931E;
  --color-accent: #FEC84D;
  --color-dark: #1a1a2e;
  --color-darker: #0f0f1e;
  --color-light: #eee;
}

html {
  overflow-x: hidden;
}

body {
  overflow-x: hidden;
}

#landing-page {
  width: 100%;
  margin: 0;
  padding: 0;
  position: relative;
  background: linear-gradient(135deg, #0f0f1e 0%, #1a1a2e 50%, #2d1b3d 100%);
  min-height: 100vh;
}

#main-content {
  padding: 0 !important;
  margin: 0 !important;
}


#landing-page::before {
  content: '';
  position: absolute;
  width: 200%;
  height: 200%;
  top: -50%;
  left: -50%;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(255, 107, 53, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(254, 200, 77, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 80%, rgba(247, 147, 30, 0.12) 0%, transparent 50%);
  animation: rotate 30s linear infinite;
  pointer-events: none;
  z-index: 0;
}


#landing-page::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(90deg, rgba(255, 107, 53, 0.03) 1px, transparent 1px),
    linear-gradient(rgba(255, 107, 53, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: gridMove 20s linear infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes rotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes gridMove {
  0% { transform: translateY(0); }
  100% { transform: translateY(50px); }
}


body:has(#landing-page:not(.hidden))::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #0f0f1e;
  z-index: -10;
}

header {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 0;
  position: relative;
  overflow: hidden;
  background: transparent; 
}


header::before,
header::after {
  display: none;
}

.logo-container {
  width: 180px;
  height: 180px;
  margin-bottom: 2rem;
  animation: logoEntrance 1.2s cubic-bezier(0.34, 1.56, 0.64, 1) backwards;
  position: relative;
  z-index: 10;
}

.logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 0 30px rgba(255, 107, 53, 0.5));
  transition: all 0.3s ease;
}

.logo-container:hover .logo {
  filter: drop-shadow(0 0 40px rgba(255, 107, 53, 0.8));
  transform: scale(1.05) rotate(2deg);
}

@keyframes logoEntrance {
  0% {
    opacity: 0;
    transform: scale(0.5) rotateY(180deg);
  }
  100% {
    opacity: 1;
    transform: scale(1) rotateY(0deg);
  }
}

.hero-content {
  text-align: center;
  max-width: 900px;
  position: relative;
  z-index: 10;
  padding: 0 2rem;
}

.survey-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(3.5rem, 10vw, 7rem);
  font-weight: 900;
  background: linear-gradient(135deg, #FF6B35 0%, #F7931E 50%, #FEC84D 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
  animation: titleGlow 1.5s ease-out backwards;
  position: relative;
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-transform: uppercase;
}

.survey-title::before {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #FF6B35 0%, #F7931E 50%, #FEC84D 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: blur(20px);
  opacity: 0.5;
  z-index: -1;
}

@keyframes titleGlow {
  0% {
    opacity: 0;
    transform: translateY(30px) scale(0.9);
    filter: blur(10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
  }
}

.survey-title::after {
  display: none;
}

.subtitle {
  font-size: clamp(1rem, 2vw, 1.4rem);
  color: #FEC84D;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-weight: 500;
  margin-bottom: 3rem;
  animation: fadeInUp 1.2s ease-out 0.3s backwards;
  text-shadow: 0 0 20px rgba(254, 200, 77, 0.3);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin: 3rem 0;
  animation: fadeInUp 1.4s ease-out 0.5s backwards;
  flex-wrap: wrap;
}

.hero-stat {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 1.5rem 2.5rem;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
}

.hero-stat::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.2), rgba(254, 200, 77, 0.2));
  transform: translateY(100%);
  transition: transform 0.4s ease;
}

.hero-stat:hover::before {
  transform: translateY(0);
}

.hero-stat:hover {
  transform: translateY(-10px) scale(1.05);
  border-color: rgba(255, 107, 53, 0.5);
  box-shadow: 0 20px 60px rgba(255, 107, 53, 0.3);
}

.hero-stat-number {
  display: block;
  font-family: 'Playfair Display', serif;
  font-size: 3rem;
  font-weight: 900;
  background: linear-gradient(135deg, #FF6B35, #FEC84D);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 0.5rem;
  position: relative;
  z-index: 1;
}

.hero-stat-label {
  display: block;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
  position: relative;
  z-index: 1;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin: 2rem 0;
  animation: fadeInUp 1.6s ease-out 0.7s backwards;
}

.social-link {
  width: 60px;
  height: 60px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FEC84D;
  text-decoration: none;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
}

.social-link::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #FF6B35, #F7931E);
  transform: scale(0);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  border-radius: 50%;
}

.social-link:hover::before {
  transform: scale(1);
}

.social-link:hover {
  color: white;
  transform: translateY(-8px) rotate(10deg);
  box-shadow: 0 15px 40px rgba(255, 107, 53, 0.4);
  border-color: rgba(255, 107, 53, 0.5);
}

.social-link svg {
  position: relative;
  z-index: 1;
  transition: transform 0.3s ease;
}

.social-link:hover svg {
  transform: scale(1.2);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  width: 30px;
  height: 50px;
  border: 2px solid rgba(255, 107, 53, 0.5);
  border-radius: 25px;
  animation: fadeIn 2s ease-out 1s backwards;
  z-index: 10;
}

.scroll-indicator::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 50%;
  width: 6px;
  height: 10px;
  background: #FF6B35;
  border-radius: 3px;
  transform: translateX(-50%);
  animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
    opacity: 0;
  }
  50% {
    transform: translateX(-50%) translateY(15px);
    opacity: 1;
  }
}

.presentation-section {
  padding: 6rem 2rem;
  background: transparent; 
  position: relative;
  z-index: 1;
}

.presentation-card {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 30px;
  padding: 4rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.3);
}

.presentation-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #FF6B35, #F7931E, #FEC84D);
}

.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.5rem, 5vw, 4rem);
  background: linear-gradient(135deg, #FF6B35, #FEC84D);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 2rem;
  font-weight: 900;
}

.presentation-text {
  font-size: 1.2rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2rem;
}

.highlight-bridge,
.highlight-500 {
  background: linear-gradient(135deg, #FF6B35, #FEC84D);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.feature-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 2.5rem;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.2), transparent 70%);
  transform: translate(-50%, -50%);
  transition: all 0.5s ease;
  border-radius: 50%;
}

.feature-card:hover::before {
  width: 300px;
  height: 300px;
}

.feature-card:hover {
  transform: translateY(-10px);
  border-color: rgba(255, 107, 53, 0.5);
  box-shadow: 0 20px 60px rgba(255, 107, 53, 0.3);
}

.feature-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
  filter: grayscale(0.3);
  transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
  filter: grayscale(0);
  transform: scale(1.2) rotate(5deg);
}

.feature-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  color: #FEC84D;
  margin-bottom: 1rem;
  font-weight: 700;
  position: relative;
  z-index: 1;
}

.feature-desc {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

.cta-section {
  text-align: center;
  margin-top: 4rem;
  padding: 2rem;
}

.cta-button {
  padding: 1.5rem 4rem;
  background: linear-gradient(135deg, #FF6B35, #F7931E);
  border: none;
  border-radius: 50px;
  color: white;
  font-size: 1.3rem;
  font-weight: 700;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: 'Work Sans', sans-serif;
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 10px 40px rgba(255, 107, 53, 0.4);
}

.cta-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.6s ease;
}

.cta-button:hover::before {
  left: 100%;
}

.cta-button:hover {
  transform: translateY(-5px) scale(1.05);
  box-shadow: 0 20px 60px rgba(255, 107, 53, 0.6);
}

.cta-button:active {
  transform: translateY(-2px) scale(1.02);
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@media (max-width: 768px) {
  .hero-stats {
    flex-direction: column;
    gap: 1rem;
  }

  .hero-stat {
    padding: 1.2rem 2rem;
  }

  .presentation-card {
    padding: 2.5rem 1.5rem;
  }

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

  .cta-button {
    padding: 1.2rem 3rem;
    font-size: 1.1rem;
  }

  .social-link {
    width: 50px;
    height: 50px;
  }
}

@media (max-width: 480px) {
  .logo-container {
    width: 140px;
    height: 140px;
  }

  .hero-stat-number {
    font-size: 2.5rem;
  }

  .presentation-text {
    font-size: 1rem;
  }
}

/* Particules flottantes */
.hero-decoration {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.15), transparent 70%);
  animation: floatParticle 15s infinite ease-in-out;
  pointer-events: none;
  z-index: 5;
}

.hero-decoration:nth-child(1) {
  top: 10%;
  right: 5%;
  animation-delay: 0s;
}

.hero-decoration:nth-child(2) {
  bottom: 15%;
  left: 10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(254, 200, 77, 0.12), transparent 70%);
  animation-delay: 5s;
}

.hero-decoration:nth-child(3) {
  top: 50%;
  left: 50%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(247, 147, 30, 0.1), transparent 70%);
  animation-delay: 10s;
}

@keyframes floatParticle {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(50px, -50px) scale(1.1);
  }
  66% {
    transform: translate(-30px, 30px) scale(0.9);
  }
}