/* ===================================
   CHARTE GRAPHIQUE - VOYAGE EN ASIE
   Couleurs chaleureuses et modernes
   =================================== */

:root {
    /* Palette de couleurs principale - Tons chauds et modernes */
    --primary-gradient: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 50%, #FFA07A 100%);
    --secondary-gradient: linear-gradient(135deg, #4ECDC4 0%, #44A08D 100%);
    --accent-gradient: linear-gradient(135deg, #F093FB 0%, #F5576C 100%);
    --warm-gradient: linear-gradient(135deg, #FA8BFF 0%, #2BD2FF 50%, #2BFF88 100%);
    --light-gradient: linear-gradient(90deg, #ffffff 0%, var(--bg-cream)100%);

    
    /* Couleurs solides */
    --primary-color: #FF6B6B;
    --primary-dark: #FF5252;
    --primary-light: #FF8E8E;
    
    --secondary-color: #4ECDC4;
    --secondary-dark: #3DBDB4;
    --secondary-light: #6ED7CF;
    
    --accent-color: #FFA07A;
    --accent-dark: #FF8E53;
    --accent-light: #FFB398;
    
    --warm-orange: #FF8E53;
    --warm-pink: #FF6B9D;
    --warm-yellow: #FFD93D;
    --cool-blue: #6BCF7F;
    --cool-teal: #4ECDC4;
    
    /* Couleurs neutres */
    --bg-light: #FFF8F3;
    --bg-white: #FFFFFF;
    --bg-cream: #FFF5EB;
    --text-dark: #2D3436;
    --text-medium: #636E72;
    --text-light: #B2BEC3;
    
    /* Ombres */
    --shadow-sm: 0 2px 8px rgba(255, 107, 107, 0.1);
    --shadow-md: 0 4px 16px rgba(255, 107, 107, 0.15);
    --shadow-lg: 0 8px 32px rgba(255, 107, 107, 0.2);
    --shadow-hover: 0 12px 40px rgba(255, 107, 107, 0.25);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50px;
}

/* ===================================
   RESET & BASE STYLES
   =================================== */

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

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===================================
   NAVBAR TRANSPARENTE AVEC EFFET GLASSMORPHISM
   =================================== */

.navbar-transparent {
    background: rgba(255, 255, 255, 0.1) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    transition: all var(--transition-normal);
}

.navbar-transparent.scrolled {
    background: rgba(255, 255, 255, 0.95) !important;
    box-shadow: var(--shadow-md);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all var(--transition-fast);
}

/* Quand le fond est foncé (page d'accueil avec hero), utiliser le gradient clair */
.navbar-brand.light-text {
    background: var(--light-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.nav-link {
    color: var(--text-dark) !important;
    font-weight: 500;
    position: relative;
    transition: all var(--transition-fast);
    padding: 0.5rem 1rem !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--primary-gradient);
    transition: width var(--transition-normal);
    border-radius: var(--radius-full);
}

.nav-link:hover::after {
    width: 80%;
}

.navbar-text {
    color: var(--text-medium) !important;
}

/* ===================================
   BOUTONS - SYSTÈME COMPLET
   =================================== */

.btn {
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

/* Bouton Primaire - Gradient chaud */
.btn-primary {
    background: var(--primary-gradient) !important;
    color: white !important;
    border: none !important;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.btn-primary:active {
    transform: translateY(-1px);
}

/* Bouton Secondaire - Gradient cool */
.btn-secondary {
    background: var(--secondary-gradient) !important;
    color: white !important;
    border: none !important;
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

/* Bouton Accent - Gradient rose */
.btn-accent {
    background: var(--accent-gradient) !important;
    color: white !important;
    border: none !important;
    box-shadow: var(--shadow-md);
}

.btn-accent:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

/* Bouton Outline */
.btn-outline-primary {
    background: transparent !important;
    color: var(--primary-color) !important;
    border: 2px solid var(--primary-color) !important;
    box-shadow: none;
}

.btn-outline-primary:hover {
    background: var(--primary-gradient) !important;
    color: white !important;
    border-color: transparent !important;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* Bouton Outline */
.btn-outline-primary-light {
    background: transparent !important;
    color: var(--bg-cream) !important;
    border: 2px solid var(--primary-color) !important;
    box-shadow: none;
}

.btn-outline-primary-light:hover {
    background: var(--primary-gradient) !important;
    border-color: transparent !important;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* Bouton Ghost */
.btn-ghost {
    background: rgba(255, 107, 107, 0.1) !important;
    color: var(--primary-color) !important;
    border: none !important;
}

.btn-ghost:hover {
    background: rgba(255, 107, 107, 0.2) !important;
    transform: translateY(-2px);
}

/* Tailles de boutons */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

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

/* ===================================
   CARDS - COMPOSANTS RÉUTILISABLES
   =================================== */

.card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: none;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

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

.card-gradient .card-title,
.card-gradient .card-text {
    color: white;
}

/* Card avec bordure gradient */
.card-border-gradient {
    position: relative;
    background: white;
    border: none;
}

.card-border-gradient::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    padding: 3px;
    background: var(--primary-gradient);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

/* ===================================
   HERO SECTION AVEC GRADIENT
   =================================== */

.hero-section {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--warm-gradient);
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

/* ===================================
   BADGES & TAGS
   =================================== */

.badge {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.875rem;
}

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

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

/* ===================================
   FORMULAIRES STYLISÉS
   =================================== */

.form-control {
    border: 2px solid #E8E8E8;
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    transition: all var(--transition-fast);
    background: white;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(255, 107, 107, 0.1);
    outline: none;
}

.form-label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

/* ===================================
   ALERTS PERSONNALISÉES
   =================================== */

.alert {
    border-radius: var(--radius-md);
    border: none;
    padding: 1rem 1.5rem;
}

.alert-success {
    background: linear-gradient(135deg, #6BCF7F 0%, #5ABE6E 100%);
    color: white;
}

.alert-danger {
    background: linear-gradient(135deg, #FF6B6B 0%, #FF5252 100%);
    color: white;
}

.alert-info {
    background: linear-gradient(135deg, #4ECDC4 0%, #44A08D 100%);
    color: white;
}

/* ===================================
   ANIMATIONS & EFFETS
   =================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* Effet de brillance sur les boutons */
.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

/* ===================================
   UTILITAIRES
   =================================== */

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

.bg-light-gradient {
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-cream) 100%);
}

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

/* ===================================
   STYLES POUR LA GESTION DES VOYAGES
   =================================== */

/* Tables */
.table {
    background: white;
}

.table thead th {
    border-bottom: 2px solid var(--primary-color);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    color: var(--text-dark);
}

.table tbody tr {
    transition: all var(--transition-fast);
}

.table tbody tr:hover {
    background-color: rgba(255, 107, 107, 0.05);
    transform: scale(1.01);
}

/* Cards */
.card-header {
    font-weight: 600;
    border-bottom: 2px solid rgba(255, 107, 107, 0.1);
}

/* Stat Cards */
.stat-card {
    border: none;
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

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

/* Budget Progress */
.budget-info {
    min-width: 120px;
}

.budget-info .progress {
    border-radius: var(--radius-full);
}

/* Badges */
.badge {
    font-weight: 600;
    padding: 0.4rem 0.8rem;
}

/* Panels latéraux */
.sticky-top {
    position: sticky;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
}

.empty-state h5 {
    color: var(--text-dark);
    margin-top: 1rem;
}

/* Trip Details Content */
.trip-detail-content {
    padding: 0.5rem 0;
}

.trip-detail-content h6 {
    font-weight: 700;
    color: var(--text-medium);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

/* Breadcrumb */
.breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 1rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: var(--text-medium);
}

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

.breadcrumb-item a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* DataTables Customization */
.dataTables_wrapper {
    padding: 1rem 0;
}

.dataTables_filter input,
.dataTables_length select {
    border: 2px solid #E8E8E8;
    border-radius: var(--radius-md);
    padding: 0.5rem 1rem;
    transition: all var(--transition-fast);
}

.dataTables_filter input:focus,
.dataTables_length select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

.dataTables_info {
    color: var(--text-medium);
    font-size: 0.875rem;
}

.page-item.active .page-link {
    background: var(--primary-gradient) !important;
    border-color: transparent !important;
}

.page-link {
    color: var(--primary-color) !important;
    border-radius: var(--radius-sm) !important;
    margin: 0 2px;
    transition: all var(--transition-fast);
}

.page-link:hover {
    background-color: rgba(255, 107, 107, 0.1);
    transform: translateY(-2px);
}

/* Form Styles Enhancement */
.form-select:focus,
.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(255, 107, 107, 0.15);
}

/* Button Groups */
.btn-group .btn {
    border-radius: var(--radius-sm) !important;
    margin: 0 2px;
}

/* Modal Customization */
.modal-header {
    background: var(--primary-gradient);
    color: white;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-header .btn-close {
    filter: brightness(0) invert(1);
}

.modal-content {
    border-radius: var(--radius-lg);
    border: none;
    box-shadow: var(--shadow-lg);
}

/* Stat Icons */
.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-sm);
}

/* Trip Cards on Hover */
.card.trip-card {
    transition: all var(--transition-normal);
    cursor: pointer;
}

.card.trip-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-hover);
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Success/Error States */
.state-success {
    color: var(--cool-blue);
}

.state-warning {
    color: var(--warm-yellow);
}

.state-danger {
    color: var(--primary-color);
}

/* Responsive Tables */
@media (max-width: 768px) {
    .table-responsive {
        border-radius: var(--radius-md);
    }
    
    .sticky-top {
        position: relative;
        top: 0;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .trips-header h1 {
        font-size: 1.75rem;
    }
    
    .stat-card h3 {
        font-size: 1.5rem;
    }
}