/* Variables de thème globales */
:root {
  --bg: #0b0f1c;
  --text: #f0f4ff;
  --text-muted: #9ca3af;
  --glass-bg: rgba(20, 30, 50, 0.4);
  --glass-border: rgba(255,255,255,0.08);
  --glass-hover-bg: rgba(30, 45, 70, 0.6);
  --glass-hover-border: rgba(120,180,255,0.3);
  --card-bg: rgba(20,30,50,0.3);
  --card-border: rgba(255,255,255,0.05);
  --input-bg: rgba(255,255,255,0.05);
  --input-border: rgba(255,255,255,0.1);
  --navbar-bg: rgba(10,15,30,0.6);
  --navbar-border: rgba(255,255,255,0.05);
  --stat-bg: rgba(255,255,255,0.02);
  --testimonial-bg: rgba(20,30,50,0.6);
  --shadow: 0 20px 40px -15px rgba(0,150,255,0.3);
  --blue-accent: #3b82f6;
}

[data-theme="light"] {
  --bg: #f1f5f9;
  --text: #0f172a;
  --text-muted: #475569;
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0,0,0,0.08);
  --glass-hover-bg: rgba(255,255,255,0.9);
  --glass-hover-border: rgba(37,99,235,0.3);
  --card-bg: rgba(255,255,255,0.5);
  --card-border: rgba(0,0,0,0.05);
  --input-bg: rgba(0,0,0,0.02);
  --input-border: rgba(0,0,0,0.1);
  --navbar-bg: rgba(255,255,255,0.6);
  --navbar-border: rgba(0,0,0,0.05);
  --stat-bg: rgba(0,0,0,0.02);
  --testimonial-bg: rgba(255,255,250,0.8);
  --shadow: 0 20px 40px -15px rgba(0,0,0,0.1);
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background 0.3s, color 0.3s;
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 2rem;
  transition: all 0.3s ease;
}
.glass-card:hover {
  background: var(--glass-hover-bg);
  border-color: var(--glass-hover-border);
  transform: translateY(-8px);
  box-shadow: var(--shadow);
}

.glass-card-feature {
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--card-border);
  border-radius: 1.5rem;
}

.gradient-text {
  background: linear-gradient(135deg, #a6c9ff, #6cb4ff, #3d7eff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  border-radius: 3rem;
  padding: 0.75rem 2rem;
  font-weight: 600;
  transition: all 0.3s;
  border: 1px solid rgba(255,255,255,0.1);
  color: white;
}
.btn-primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  box-shadow: 0 10px 25px -5px #2563eb80;
  transform: scale(1.02);
}

.btn-outline {
  border: 1px solid var(--input-border);
  border-radius: 3rem;
  padding: 0.75rem 2rem;
  font-weight: 500;
  transition: all 0.3s;
  background: transparent;
  color: inherit;
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: #3b82f6;
}

#particles-js {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 0;
}

.hero-content, section {
  position: relative;
  z-index: 5;
}

.navbar-glass {
  background: var(--navbar-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--navbar-border);
}

.stat-item {
  background: var(--stat-bg);
  border-radius: 1.5rem;
  padding: 1.5rem;
  border: 1px solid var(--card-border);
}

.client-logo {
  filter: brightness(0) invert(1) opacity(0.5);
  transition: filter 0.3s;
  max-height: 40px;
}
.client-logo:hover {
  filter: brightness(0) invert(1) opacity(0.8);
}

.testimonial-card {
  background: var(--testimonial-bg);
  border-left: 4px solid var(--blue-accent);
  backdrop-filter: blur(8px);
}

.lang-switch {
  background: var(--input-bg);
  border-radius: 2rem;
  padding: 0.25rem;
  display: flex;
  gap: 0.25rem;
}
.lang-switch button {
  padding: 0.3rem 1rem;
  border-radius: 2rem;
  font-weight: 500;
  transition: all 0.2s;
  color: var(--text-muted);
  background: transparent;
  border: none;
}
.lang-switch button.active {
  background: #2563eb;
  color: white;
}

input, select, textarea {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--text);
}
input::placeholder, textarea::placeholder {
  color: var(--text-muted);
}
.input-focus:focus {
  box-shadow: 0 0 0 4px rgba(59,130,246,0.15);
  border-color: var(--blue-accent);
}

.faq-open .faq-ico { transform: rotate(180deg); }

.nav-item-group:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown {
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s ease;
}

/* Adaptations pour le thème clair sur certains éléments */
[data-theme="light"] .client-logo {
  filter: brightness(0) opacity(0.4);
}
[data-theme="light"] .client-logo:hover {
  filter: brightness(0) opacity(0.7);
}
[data-theme="light"] .testimonial-card {
  border-left-color: #2563eb;
}
[data-theme="light"] .btn-outline:hover {
  background: rgba(0,0,0,0.05);
}
[data-theme="light"] .stat-item {
  background: rgba(0,0,0,0.02);
}
[data-theme="light"] .mobile-menu-panel {
  background: #fff !important;
  color: #0f172a;
  border-color: rgba(0,0,0,0.1);
}
[data-theme="light"] .mobile-menu-panel a,
[data-theme="light"] .mobile-menu-panel button {
  color: #0f172a;
}

/* Select2 : personnalisation pour thème sombre/clair */
.select2-container--default .select2-selection--single {
  background: var(--input-bg) !important;
  border: 1px solid var(--input-border) !important;
  border-radius: 1rem !important;
  height: auto !important;
  padding: 0.5rem 1rem !important;
  color: var(--text) !important;
}
.select2-container--default .select2-selection--single .select2-selection__rendered {
  color: var(--text) !important;
  line-height: 1.6;
  padding-left: 0;
}
.select2-container--default .select2-selection--single .select2-selection__arrow b {
  border-color: var(--text) transparent transparent transparent !important;
}
.select2-dropdown {
  background: var(--bg) !important;
  border: 1px solid var(--glass-border) !important;
  border-radius: 1rem !important;
  overflow: hidden;
}
.select2-results__option {
  color: var(--text) !important;
  padding: 0.5rem 1rem;
}
.select2-results__option--highlighted {
  background: #2563eb !important;
  color: white !important;
}
.select2-container--default .select2-search--dropdown .select2-search__field {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--text);
  border-radius: 0.5rem;
  outline: none;
}
.select2-container--default .select2-search--dropdown .select2-search__field:focus {
  border-color: #3b82f6;
}

/* Calendrier */
#calendar-days .day {
  cursor: pointer;
  border-radius: 0.5rem;
  padding: 0.5rem;
  transition: background 0.2s;
}
#calendar-days .day:hover {
  background: rgba(59,130,246,0.2);
}
#calendar-days .day.selected {
  background: #2563eb;
  color: white;
}
#calendar-days .day.today {
  background: rgba(59,130,246,0.3);
}
#calendar-days .day.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.slot-btn {
  background: transparent;
  border: 1px solid var(--input-border);
  border-radius: 0.75rem;
  padding: 0.5rem;
  color: var(--text);
  transition: all 0.2s;
  text-align: center;
}
.slot-btn:hover {
  background: #2563eb;
  color: white;
  border-color: #2563eb;
}
.slot-btn.selected {
  background: #2563eb;
  color: white;
}