:root {
  /* Palette de couleurs premium */
  --color-primary: #D35400; /* Sunset Orange */
  --color-primary-light: #E67E22;
  --color-secondary: #2C3E50; /* Deep Night Blue/Green */
  --color-accent: #27AE60; /* Nature Green */
  
  --color-bg: #FDFBF7; /* Soft Paper White */
  --color-surface: #FFFFFF;
  --color-text: #333333;
  --color-text-muted: #7F8C8D;
  
  --color-border: #E0E6ED;
  
  /* Ombres et Glassmorphism */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 8px 24px rgba(44, 62, 80, 0.08);
  --shadow-lg: 0 16px 40px rgba(44, 62, 80, 0.12);
  
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image: radial-gradient(circle at 100% 0%, rgba(230, 126, 34, 0.05) 0%, transparent 50%),
                    radial-gradient(circle at 0% 100%, rgba(39, 174, 96, 0.05) 0%, transparent 50%);
  background-attachment: fixed;
  min-height: 100vh;
}

h1, h2, h3, h4 {
  font-weight: 700;
  color: var(--color-secondary);
  line-height: 1.2;
}

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

/* Layout */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.header {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header h1 {
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links button {
  background: none;
  border: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: var(--transition);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
}

.nav-links button:hover, .nav-links button.active {
  color: var(--color-primary);
  background: rgba(211, 84, 0, 0.08);
}

.main-content {
  flex: 1;
  padding: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

/* Cards & Surfaces */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(255,255,255,0.5);
  transition: var(--transition);
  margin-bottom: 1.5rem;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-header {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(211, 84, 0, 0.2);
}
.btn-primary:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(211, 84, 0, 0.3);
}

.btn-secondary {
  background: var(--color-secondary);
  color: white;
}
.btn-secondary:hover {
  background: #1a252f;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-danger {
  background: #E74C3C;
  color: white;
}
.btn-danger:hover {
  background: #C0392B;
}

/* Forms */
.form-group {
  margin-bottom: 1.2rem;
}
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 0.4rem;
}
.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
  background: #F8FAFC;
}
.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(211, 84, 0, 0.1);
  background: white;
}
select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%237F8C8D' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* Grids & Layouts */
.grid {
  display: grid;
  gap: 1.5rem;
}
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

/* Tags & Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.badge-zone-orangerie { background: #FDEBD0; color: #D35400; }
.badge-zone-piquenique { background: #D5F5E3; color: #27AE60; }
.badge-zone-scene { background: #E8DAEF; color: #8E44AD; }
.badge-default { background: #EAEDED; color: #7F8C8D; }

/* Tables/Lists */
.data-list {
  list-style: none;
}
.data-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}
.data-item:last-child {
  border-bottom: none;
}
.data-item:hover {
  background: rgba(0,0,0,0.01);
}

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-muted);
}
.empty-state svg {
  margin-bottom: 1rem;
  opacity: 0.5;
}

/* Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.text-center { text-align: center; }
.text-sm { font-size: 0.85rem; }
.text-muted { color: var(--color-text-muted); }

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-fade-in {
  animation: fadeIn 0.4s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
}