/* ===========================
   VARIABLES CSS
   =========================== */
:root {
  /* Couleurs Light Mode */
  --bg-primary-light: #FFFFFF;
  --bg-secondary-light: #F8F9FA;
  --text-primary-light: #1A1A1A;
  --text-secondary-light: #6C757D;

  /* Couleurs Dark Mode */
  --bg-primary-dark: #0A0A0F;
  --bg-secondary-dark: #1A1A2E;
  --text-primary-dark: #FFFFFF;
  --text-secondary-dark: #A0A0A0;

  /* Couleurs d'accent */
  --color-violet: #8B5CF6;
  --color-violet-light: #A78BFA;
  --color-blue: #3B82F6;
  --color-blue-dark: #1E40AF;
  --color-blue-light: #60A5FA;
  --color-gray: #6B7280;
  --color-gray-light: #9CA3AF;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-violet) 0%, var(--color-blue) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--color-blue) 0%, var(--color-violet) 100%);
  --gradient-orb-1: radial-gradient(circle, rgba(139, 92, 246, 0.3) 0%, transparent 70%);
  --gradient-orb-2: radial-gradient(circle, rgba(59, 130, 246, 0.3) 0%, transparent 70%);

  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1);
  --glass-blur: blur(10px);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Border radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Z-index */
  --z-header: 1000;
  --z-modal: 2000;
  --z-cursor: 3000;

  /* Fonts */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  max-width: 100%;
}

body {
  font-family: var(--font-main);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  max-width: 100vw;
  position: relative;
}

/* Theme Dark (par défaut) */
body.theme-dark {
  background-color: var(--bg-primary-dark);
  color: var(--text-primary-dark);
}

/* Theme Light */
body.theme-light {
  background-color: var(--bg-primary-light);
  color: var(--text-primary-light);
}

body.theme-light .glass {
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0, 0, 0, 0.1);
  background: var(--glass-bg);
  border-color: var(--glass-border);
}

/* ===========================
   TYPOGRAPHY
   =========================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

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

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

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

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

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

a:hover {
  color: var(--color-violet-light);
}

/* ===========================
   UTILITIES
   =========================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
}

/* ===========================
   CANVAS PARTICULES
   =========================== */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* ===========================
   CUSTOM CURSOR
   =========================== */
.custom-cursor,
.custom-cursor-follower {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  position: fixed;
  pointer-events: none;
  z-index: var(--z-cursor);
  transition: transform var(--transition-fast);
  display: none;
}

@media (pointer: fine) {

  .custom-cursor,
  .custom-cursor-follower {
    display: block;
  }
}

.custom-cursor {
  background: var(--color-violet);
  mix-blend-mode: difference;
  transform: translate(-50%, -50%) scale(1);
}

.custom-cursor-follower {
  border: 2px solid var(--color-violet);
  transform: translate(-50%, -50%) scale(1);
  transition: transform 0.15s ease, opacity 0.15s ease;
}

body:hover .custom-cursor {
  transform: translate(-50%, -50%) scale(0.8);
}

a:hover~.custom-cursor,
button:hover~.custom-cursor {
  transform: translate(-50%, -50%) scale(1.5);
}

/* ===========================
   HEADER & NAVIGATION
   =========================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: var(--spacing-md) 0;
  z-index: var(--z-header);
  transition: background var(--transition-normal), padding var(--transition-normal);
}

.header.scrolled {
  padding: var(--spacing-sm) 0;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.logo-dot {
  color: var(--color-violet);
  animation: blink 2s infinite;
}

@keyframes blink {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0;
  }
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  margin: 0;
}

.nav-item {
  flex-shrink: 0;
}

.nav-link {
  position: relative;
  font-weight: 500;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  position: relative;
}

.nav-link .badge {
  position: absolute;
  top: -8px;
  right: -25px;
  background: var(--gradient-primary);
  color: white;
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 10px;
  font-weight: 600;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Sélecteur de langue */
.language-switcher {
  position: relative;
}

.lang-btn {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: inherit;
  transition: all var(--transition-fast);
}

.lang-btn:hover {
  background: var(--color-violet);
  border-color: var(--color-violet);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 0.25rem);
  right: 0;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  min-width: 150px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  box-shadow: var(--glass-shadow);
  transition: all var(--transition-fast);
  z-index: 1000;
  pointer-events: none;
}

.language-switcher:hover .lang-dropdown,
.language-switcher.active .lang-dropdown,
.lang-dropdown:hover {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: all;
}

.lang-option {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
  white-space: nowrap;
}

.lang-option:hover,
.lang-option.active {
  background: var(--color-violet);
  color: white;
}

/* Theme toggle */
.theme-toggle {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background: var(--color-violet);
  border-color: var(--color-violet);
  transform: rotate(180deg);
}

.theme-toggle i {
  position: absolute;
  transition: opacity var(--transition-fast);
}

body.theme-dark .theme-toggle .fa-sun {
  opacity: 0;
}

body.theme-dark .theme-toggle .fa-moon {
  opacity: 1;
}

body.theme-light .theme-toggle .fa-sun {
  opacity: 1;
}

body.theme-light .theme-toggle .fa-moon {
  opacity: 0;
}

/* Mobile menu */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
}

.mobile-menu-toggle span {
  width: 25px;
  height: 2px;
  background: currentColor;
  transition: all var(--transition-fast);
}

.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--bg-primary-dark);
  z-index: calc(var(--z-header) - 1);
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.mobile-menu-overlay.active {
  display: flex;
  opacity: 1;
}

.mobile-nav {
  list-style: none;
  text-align: center;
}

.mobile-nav li {
  margin: var(--spacing-lg) 0;
}

.mobile-nav a {
  font-size: 1.5rem;
  font-weight: 600;
  position: relative;
  display: inline-block;
}

.mobile-nav a.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.mobile-nav a .badge {
  position: absolute;
  top: -10px;
  right: -30px;
  background: var(--gradient-primary);
  color: white;
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 10px;
  font-weight: 600;
}

@media (max-width: 968px) {
  .nav-menu {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }
}

/* ===========================
   SECTIONS & PAGES
   =========================== */
.main-content {
  min-height: 100vh;
  padding-top: 80px;
}

.section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 0;
}

.section-link {
  color: var(--color-violet);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: gap var(--transition-fast);
}

.section-link:hover {
  gap: 1rem;
}

.page-header {
  min-height: 40vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: var(--spacing-sm);
}

.page-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary-dark);
  font-weight: 400;
}

body.theme-light .page-subtitle {
  color: var(--text-secondary-light);
}

/* ===========================
   HERO SECTION
   =========================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  animation: float 20s infinite ease-in-out;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: var(--gradient-orb-1);
  top: -10%;
  right: -10%;
  animation-delay: 0s;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: var(--gradient-orb-2);
  bottom: -10%;
  left: -10%;
  animation-delay: -7s;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: var(--gradient-orb-1);
  top: 40%;
  left: 50%;
  animation-delay: -14s;
}

@keyframes float {

  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }

  33% {
    transform: translate(30px, -50px) scale(1.1);
  }

  66% {
    transform: translate(-20px, 20px) scale(0.9);
  }
}

.hero-content {
  text-align: center;
  z-index: 1;
  max-width: 800px;
}

.hero-greeting {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-violet);
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
}

.hero-title {
  font-size: clamp(3rem, 8vw, 5rem);
  margin-bottom: var(--spacing-sm);
  line-height: 1.1;
}

.hero-subtitle {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--spacing-md);
  font-weight: 600;
  color: var(--color-blue-light);
}

.hero-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary-dark);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

body.theme-light .hero-description {
  color: var(--text-secondary-light);
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.hero-social {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
}

.social-icon {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  font-size: 1.25rem;
  transition: all var(--transition-normal);
}

.social-icon:hover {
  background: var(--gradient-primary);
  border-color: transparent;
  transform: translateY(-5px);
}

.hero-scroll {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  animation: bounce 2s infinite;
}

@keyframes bounce {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  50% {
    transform: translateX(-50%) translateY(-10px);
  }
}

.scroll-indicator {
  width: 30px;
  height: 50px;
  border: 2px solid var(--glass-border);
  border-radius: 20px;
  margin: 0 auto var(--spacing-sm);
  position: relative;
}

.scroll-indicator span {
  width: 6px;
  height: 10px;
  background: var(--color-violet);
  display: block;
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 3px;
  animation: scroll 2s infinite;
}

@keyframes scroll {
  0% {
    opacity: 1;
    top: 10px;
  }

  100% {
    opacity: 0;
    top: 30px;
  }
}

/* ===========================
   BUTTONS
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(139, 92, 246, 0.4);
}

.btn-secondary {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: inherit;
}

.btn-secondary:hover {
  background: var(--color-violet);
  border-color: var(--color-violet);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-block {
  width: 100%;
  justify-content: center;
}

/* ===========================
   FOOTER
   =========================== */
.footer {
  background: var(--bg-secondary-dark);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  position: relative;
}

body.theme-light .footer {
  background: var(--bg-secondary-light);
}

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

.footer-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.footer-subtitle {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
}

.footer-text {
  color: var(--text-secondary-dark);
}

body.theme-light .footer-text {
  color: var(--text-secondary-light);
}

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

.footer-links li {
  margin: 0.5rem 0;
}

.footer-links a {
  color: var(--text-secondary-dark);
  transition: color var(--transition-fast);
}

body.theme-light .footer-links a {
  color: var(--text-secondary-light);
}

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

.social-links {
  display: flex;
  gap: var(--spacing-sm);
}

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-normal);
}

.social-link:hover {
  background: var(--gradient-primary);
  transform: translateY(-5px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--glass-border);
  color: var(--text-secondary-dark);
}

body.theme-light .footer-bottom {
  color: var(--text-secondary-light);
}

.footer-made-with {
  margin-top: 0.5rem;
}

.footer-made-with i {
  color: #ff0000;
  animation: heartbeat 1.5s infinite;
}

@keyframes heartbeat {

  0%,
  100% {
    transform: scale(1);
  }

  25% {
    transform: scale(1.2);
  }

  50% {
    transform: scale(1);
  }
}

.scroll-top {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: white;
  border: none;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 100;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  transform: translateY(-5px);
}

/* À compléter dans animations.css */