/* NOUATECH - Styles principaux
   Charte graphique mise à jour - Mai 2025
*/

/* Variables CSS pour la charte graphique */
:root {
  /* Couleurs principales */
  --primary: #1A7D75;
  --secondary: #F39C12;
  --dark: #333333;
  --light: #F5F5F5;
  --white: #FFFFFF;
  
  /* Couleurs sectorielles */
  --industry: #3498DB;
  --energy: #27AE60;
  --digital: #9B59B6;
  --social: #E74C3C;
  
  /* Typographie */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Open Sans', sans-serif;
  
  /* Espacements */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 5rem;
  
  /* Transitions */
  --transition-fast: 0.3s ease;
  --transition-medium: 0.5s ease;
  
  /* Ombres */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 8px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 16px rgba(0,0,0,0.1);
  
  /* Arrondis */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;
}

/* Réinitialisation et styles de base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  color: var(--dark);
  line-height: 1.6;
  background-color: var(--white);
}

/* Typographie */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--dark);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: 2rem;
  color: var(--primary);
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--secondary);
}

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.section {
  padding: var(--spacing-lg) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -15px;
}

.col {
  flex: 1;
  padding: 0 15px;
}

/* Header et Navigation */
header {
  background-color: var(--white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 50px;
  margin-right: var(--spacing-sm);
}

.nav-links {
  display: flex;
  list-style: none;
}

.nav-links li {
  margin-left: var(--spacing-md);
}

.nav-links a {
  font-family: var(--font-heading);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.5px;
}

.mobile-menu-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Boutons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--white);
}

.btn-primary:hover {
  background-color: #156960;
  color: var(--white);
}

.btn-secondary {
  background-color: var(--secondary);
  color: var(--white);
}

.btn-secondary:hover {
  background-color: #E67E22;
  color: var(--white);
}

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

.btn-outline:hover {
  background-color: var(--primary);
  color: var(--white);
}

/* Hero Section */
.hero {
  background-color: var(--light);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
}

.hero p {
  font-size: 1.2rem;
  max-width: 800px;
  margin: 0 auto var(--spacing-md);
}

/* Cartes */
.card {
  background-color: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  margin-bottom: var(--spacing-md);
}

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

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-content {
  padding: var(--spacing-md);
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
}

/* Secteurs */
.sector-card {
  text-align: center;
  padding: var(--spacing-md);
}

.sector-icon {
  font-size: 3rem;
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
}

.industry-icon {
  color: var(--industry);
}

.energy-icon {
  color: var(--energy);
}

.digital-icon {
  color: var(--digital);
}

.social-icon {
  color: var(--social);
}

/* Programmes */
.program-tabs {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.tab-button {
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--light);
  border: none;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.tab-button.active {
  background-color: var(--primary);
  color: var(--white);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Événements */
.event-card {
  display: flex;
  margin-bottom: var(--spacing-md);
  background-color: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.event-date {
  background-color: var(--primary);
  color: var(--white);
  padding: var(--spacing-sm);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-width: 100px;
}

.event-date-day {
  font-size: 1.5rem;
  font-weight: bold;
}

.event-details {
  padding: var(--spacing-sm);
  flex-grow: 1;
}

.event-filter {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.filter-button {
  margin: 0 var(--spacing-xs);
  padding: 0.5rem 1rem;
  background-color: var(--light);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-button.active {
  background-color: var(--primary);
  color: var(--white);
}

/* Startups */
.startup-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.startup-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.startup-logo {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  object-fit: cover;
  margin-bottom: var(--spacing-sm);
}

.startup-sector {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  background-color: var(--light);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  margin-bottom: var(--spacing-sm);
}

/* FAQ */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: var(--spacing-sm);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  background-color: var(--light);
  padding: var(--spacing-sm);
  cursor: pointer;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  padding: var(--spacing-sm);
  background-color: var(--white);
  display: none;
}

.faq-answer.active {
  display: block;
}

.faq-search {
  margin-bottom: var(--spacing-md);
  display: flex;
}

.faq-search input {
  flex-grow: 1;
  padding: var(--spacing-sm);
  border: 1px solid var(--light);
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.faq-search button {
  padding: var(--spacing-sm);
  background-color: var(--primary);
  color: var(--white);
  border: none;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  cursor: pointer;
}

/* Formulaires */
.form-group {
  margin-bottom: var(--spacing-md);
}

label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
}

input, textarea, select {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid #ddd;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
}

textarea {
  min-height: 150px;
  resize: vertical;
}

/* Footer */
footer {
  background-color: var(--dark);
  color: var(--white);
  padding: var(--spacing-lg) 0;
}

.footer-logo img {
  height: 40px;
  margin-bottom: var(--spacing-sm);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-links a {
  color: var(--light);
}

.footer-links a:hover {
  color: var(--secondary);
}

.social-links {
  display: flex;
  list-style: none;
}

.social-links li {
  margin-right: var(--spacing-sm);
}

.social-links a {
  color: var(--white);
  font-size: 1.5rem;
}

.copyright {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: var(--spacing-md);
}

/* Chatbot */
.chatbot-widget {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
}

.chatbot-button {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--primary);
  color: var(--white);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
}

.chatbot-container {
  position: absolute;
  bottom: 80px;
  right: 0;
  width: 350px;
  height: 450px;
  background-color: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: none;
}

.chatbot-header {
  background-color: var(--primary);
  color: var(--white);
  padding: var(--spacing-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chatbot-close {
  cursor: pointer;
}

.chatbot-messages {
  height: 350px;
  padding: var(--spacing-sm);
  overflow-y: auto;
}

.chatbot-input {
  display: flex;
  padding: var(--spacing-sm);
  border-top: 1px solid var(--light);
}

.chatbot-input input {
  flex-grow: 1;
  margin-right: var(--spacing-xs);
}

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

.fade-in {
  animation: fadeIn var(--transition-medium);
}

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.slide-up {
  animation: slideUp var(--transition-medium);
}

/* Media Queries */
@media (max-width: 992px) {
  .col {
    flex: 0 0 50%;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--white);
    flex-direction: column;
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-sm);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .nav-links li {
    margin: 0;
    text-align: center;
    padding: var(--spacing-xs) 0;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .event-card {
    flex-direction: column;
  }
  
  .event-date {
    flex-direction: row;
    justify-content: space-around;
  }
  
  .col {
    flex: 0 0 100%;
  }
}

@media (max-width: 576px) {
  .container {
    padding: 0 var(--spacing-xs);
  }
  
  .section {
    padding: var(--spacing-md) 0;
  }
  
  .hero {
    padding: var(--spacing-lg) 0;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .chatbot-container {
    width: 300px;
  }
}