/* Design System Moderne */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --dark-gradient: linear-gradient(135deg, #434343 0%, #000000 100%);
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Classes utilitaires */
.animate-fade-in {
    animation: fadeIn 0.6s ease-out;
}

.animate-slide-in {
    animation: slideIn 0.5s ease-out;
}

.card-modern {
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    overflow: hidden;
}

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

.btn-modern {
    border-radius: 10px;
    padding: 12px 24px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-modern::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

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

.btn-modern:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

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

.gradient-secondary {
    background: var(--secondary-gradient);
}

.gradient-success {
    background: var(--success-gradient);
}

/* Navbar moderne */
.navbar-modern {
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.navbar-modern.scrolled {
    box-shadow: var(--shadow-md);
}

/* Cards avec effet glassmorphism */
.glass-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-lg);
}

/* Stats cards */
.stat-card {
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    transition: all 0.6s ease;
}

.stat-card:hover::before {
    top: -30%;
    right: -30%;
}

.stat-card:hover {
    transform: scale(1.05) rotate(1deg);
}

/* Table moderne */
.table-modern {
    border-collapse: separate;
    border-spacing: 0;
}

.table-modern thead th {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border: none;
    padding: 16px;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.table-modern tbody tr {
    transition: all 0.2s ease;
}

.table-modern tbody tr:hover {
    background: rgba(102, 126, 234, 0.05);
    transform: scale(1.01);
}

/* Form inputs modernes */
.form-control-modern {
    border-radius: 10px;
    border: 2px solid #e0e0e0;
    padding: 12px 16px;
    transition: all 0.3s ease;
}

.form-control-modern:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.15);
    transform: translateY(-2px);
}

/* Badges animés */
.badge-modern {
    padding: 6px 12px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.badge-modern:hover {
    transform: scale(1.1);
}

/* Loading spinner */
.spinner-modern {
    border: 3px solid rgba(102, 126, 234, 0.1);
    border-top-color: #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    overflow-y: auto;
}

body {
    overflow-x: hidden;
    overflow-y: auto;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

/* Fix dropdown z-index */
.dropdown {
    position: relative;
    z-index: 1000;
}

.dropdown-menu {
    z-index: 2000 !important;
    position: absolute !important;
}

.navbar,
.navbar-modern {
    position: relative;
    z-index: 1030;
}

.navbar-collapse {
    overflow: visible;
}

.navbar-nav .dropdown-menu {
    z-index: 2000 !important;
}

@media (max-width: 991.98px) {
    .navbar-nav .nav-item,
    .navbar-nav .dropdown {
        position: relative;
        z-index: 1;
    }

    .navbar-nav .dropdown.show {
        z-index: 5;
    }

    .navbar-nav .dropdown-menu {
        position: static !important;
        float: none;
        width: 100%;
        margin-top: 0.25rem;
        box-shadow: none;
        background: #ffffff;
        border: 1px solid rgba(0, 0, 0, 0.08);
        z-index: 6;
    }
}

/* Fix pour les selects dans les cards */
.card-modern {
    position: relative;
    z-index: 1;
}

.card-modern .form-select,
.card-modern .dropdown {
    position: relative;
    z-index: 10;
}

.card-modern .dropdown-menu {
    z-index: 1050 !important;
}