/* ===== Variables CSS ===== */
:root {
  /* Couleurs principales */
  --primary: #5865f2;
  --primary-hover: #4752c4;
  --primary-light: rgba(88, 101, 242, 0.1);
  
  /* Couleurs de fond */
  --bg-dark: #0d1117;
  --bg-card: #161b22;
  --bg-card-hover: #1c2128;
  --bg-input: #0d1117;
  --bg-nav: #161b22;
  
  /* Couleurs de texte */
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  
  /* Couleurs d'état */
  --success: #238636;
  --success-light: rgba(35, 134, 54, 0.15);
  --danger: #da3633;
  --danger-light: rgba(218, 54, 51, 0.15);
  --warning: #d29922;
  --warning-light: rgba(210, 153, 34, 0.15);
  
  /* Bordures */
  --border-color: #30363d;
  --border-radius: 6px;
  --border-radius-lg: 12px;
  
  /* Ombres */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  
  /* Espacements */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
}

/* ===== Reset ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-dark);
  min-height: 100vh;
}

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

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

img {
  max-width: 100%;
  height: auto;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.25;
  color: var(--text-primary);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }

p {
  color: var(--text-secondary);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 14px;
  font-weight: 500;
  line-height: 20px;
  border-radius: var(--border-radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
}

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

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

.btn-secondary {
  background-color: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--text-muted);
}

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

.btn-success:hover {
  background-color: #2ea043;
  border-color: #2ea043;
  color: white;
}

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

.btn-danger:hover {
  background-color: #f85149;
  border-color: #f85149;
  color: white;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 16px;
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 12px;
}

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

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 14px;
  line-height: 20px;
  color: var(--text-primary);
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238b949e' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-select[multiple] {
  background-image: none;
  padding-right: var(--spacing-md);
  height: auto;
  min-height: 120px;
}

.form-select option {
  padding: var(--spacing-sm);
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
  cursor: pointer;
}

.form-hint {
  margin-top: var(--spacing-xs);
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== Cards ===== */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.card-header {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-card-hover);
}

.card-header h2,
.card-header h3 {
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-card-hover);
}

/* ===== Alerts ===== */
.alert {
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.alert-success {
  background-color: var(--success-light);
  border: 1px solid var(--success);
  color: #3fb950;
}

.alert-danger {
  background-color: var(--danger-light);
  border: 1px solid var(--danger);
  color: #f85149;
}

.alert-warning {
  background-color: var(--warning-light);
  border: 1px solid var(--warning);
  color: #d29922;
}

/* ===== Badge ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 20px;
}

.badge-primary {
  background-color: var(--primary-light);
  color: var(--primary);
}

.badge-success {
  background-color: var(--success-light);
  color: #3fb950;
}

.badge-danger {
  background-color: var(--danger-light);
  color: #f85149;
}

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

.container-sm {
  max-width: 800px;
}

.container-lg {
  max-width: 1400px;
}

/* ===== Grid ===== */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* ===== Utilities ===== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: #3fb950; }
.text-danger { color: #f85149; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

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

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(22, 27, 34, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-md) 0;
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.navbar-brand:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.navbar-brand img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
}

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

.navbar-link {
  color: var(--text-secondary);
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.navbar-link:hover {
  color: var(--text-primary);
  text-decoration: none;
}

.navbar-user {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--bg-card);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
}

.navbar-user img {
  width: 28px;
  height: 28px;
  border-radius: 50%;
}

.navbar-user span {
  color: var(--text-primary);
  font-weight: 500;
}

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

/* ===== Footer ===== */
.footer {
  padding: var(--spacing-xl) var(--spacing-md);
  border-top: 1px solid var(--border-color);
  text-align: center;
  background-color: var(--bg-card);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary);
  text-decoration: none;
}

.footer-copyright {
  color: var(--text-muted);
  font-size: 0.9rem;
}