/* Elemental AI - Styles CSS Naturels */

/* Variables CSS pour la palette de couleurs nature */
:root {
  /* Couleurs principales */
  --nature-green: #A0D8B3;
  --warm-cream: #FFE5B4;
  --soft-cyan: #E0F7FA;
  --earth-brown: #8D6E63;
  --sage-green: #9CAF88;
  --petal-pink: #F8BBD9;
  
  /* Couleurs neutres */
  --pure-white: #FFFFFF;
  --soft-white: #FEFEFE;
  --light-gray: #F5F5F5;
  --medium-gray: #E0E0E0;
  --dark-gray: #424242;
  
  /* Ombres naturelles */
  --shadow-soft: 0 4px 20px rgba(160, 216, 179, 0.15);
  --shadow-medium: 0 8px 30px rgba(160, 216, 179, 0.2);
  --shadow-strong: 0 12px 40px rgba(160, 216, 179, 0.25);
  
  /* Transitions fluides */
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Rayons de bordure organiques */
  --radius-small: 12px;
  --radius-medium: 20px;
  --radius-large: 30px;
  --radius-organic: 25px 15px 20px 18px;
}

/* Reset et base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--dark-gray);
  background: linear-gradient(135deg, var(--soft-white) 0%, var(--light-gray) 100%);
  overflow-x: hidden;
}

/* Typographie organique */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--earth-brown);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  background: linear-gradient(135deg, var(--nature-green), var(--sage-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--earth-brown);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--sage-green);
}

p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
  color: var(--dark-gray);
}

/* Liens organiques */
a {
  color: var(--nature-green);
  text-decoration: none;
  transition: var(--transition-smooth);
  position: relative;
}

a:hover {
  color: var(--sage-green);
  transform: translateY(-2px);
}

a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--nature-green), var(--sage-green));
  transition: var(--transition-smooth);
  border-radius: 2px;
}

a:hover::after {
  width: 100%;
}

/* Conteneurs principaux */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 4rem 0;
  position: relative;
}

/* Header naturel */
.header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--medium-gray);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: var(--transition-smooth);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-soft);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--nature-green), var(--sage-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-link {
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-small);
  transition: var(--transition-smooth);
}

.nav-link:hover {
  background: var(--nature-green);
  color: white;
  transform: translateY(-2px);
}

/* Hero section organique */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--soft-cyan) 0%, var(--warm-cream) 50%, var(--nature-green) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('img/leaves-pattern.png') no-repeat center center;
  background-size: cover;
  opacity: 0.1;
  z-index: 1;
}

.hero-content {
  text-align: center;
  z-index: 2;
  position: relative;
  max-width: 800px;
  padding: 2rem;
}

.hero-title {
  margin-bottom: 2rem;
  animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
  font-size: 1.3rem;
  color: var(--earth-brown);
  margin-bottom: 3rem;
  animation: fadeInUp 1s ease-out 0.2s both;
}

/* Boutons organiques */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border: none;
  border-radius: var(--radius-organic);
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-bounce);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--nature-green), var(--sage-green));
  color: white;
  box-shadow: var(--shadow-medium);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--shadow-strong);
}

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

.btn-secondary:hover {
  background: var(--nature-green);
  color: white;
  transform: translateY(-3px);
}

/* Cards organiques */
.card {
  background: white;
  border-radius: var(--radius-large);
  padding: 2rem;
  box-shadow: var(--shadow-soft);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--nature-green), var(--sage-green), var(--warm-cream));
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-strong);
}

/* Grille responsive */
.grid {
  display: grid;
  gap: 2rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Animations naturelles */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes sway {
  0%, 100% {
    transform: rotate(-2deg);
  }
  50% {
    transform: rotate(2deg);
  }
}

.floating {
  animation: float 3s ease-in-out infinite;
}

.swaying {
  animation: sway 4s ease-in-out infinite;
}

/* Éléments décoratifs */
.leaf-decoration {
  position: absolute;
  width: 50px;
  height: 50px;
  background: url('img/leaf-texture.jpg') no-repeat center center;
  background-size: cover;
  border-radius: 50% 0 50% 0;
  opacity: 0.3;
  animation: float 4s ease-in-out infinite;
}

.flower-decoration {
  position: absolute;
  width: 40px;
  height: 40px;
  background: var(--petal-pink);
  border-radius: 50%;
  opacity: 0.4;
  animation: sway 3s ease-in-out infinite;
}

/* Footer naturel */
.footer {
  background: linear-gradient(135deg, var(--earth-brown), var(--sage-green));
  color: white;
  padding: 3rem 0 1rem;
  margin-top: 4rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  color: var(--warm-cream);
  margin-bottom: 1rem;
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  display: block;
  margin-bottom: 0.5rem;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.7);
}

/* Responsive design */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }
  
  .nav {
    padding: 1rem;
  }
  
  .nav-menu {
    gap: 1rem;
  }
  
  .hero-content {
    padding: 1rem;
  }
  
  .section {
    padding: 2rem 0;
  }
  
  .card {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .nav-menu {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .hero {
    min-height: 80vh;
  }
  
  .btn {
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
  }
}