:root {
    --primary-color: #000000;
    --secondary-color: #fff;
    --accent-color: #0066cc;
    --card-bg: #fff;
    --card-text: #111;
    --navbar-bg: #000000ee;
    --footer-bg: #000000;
    --input-bg: #fff;
    --input-text: #111;
}

.hero-bg
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding-top: 56px;
    color: var(--primary-color);
    background-color: var(--secondary-color);
    transition: background 0.4s cubic-bezier(.4,0,.2,1), color 0.4s cubic-bezier(.4,0,.2,1);
}

.light-mode {
    --primary-color: #000000;
    --secondary-color: #fff;
    --accent-color: #0066cc;
    --card-bg: #0066cc;
    --card-text: white;
    --navbar-bg: #000000ee;
    --footer-bg: #000000;
    --input-bg: #fff;
    --input-text: #111;
}
.lead{
    font-weight: bold;
}

.lead1{
    font-weight: bold;
    font-size: 45px;
}
.dark-mode {
    --primary-color: #fff;
    --secondary-color: #181818;
    --accent-color: #4da6ff;
    --card-bg: #181818;
    --card-text: #fff;
    --navbar-bg: #000000f7;
    --footer-bg: #000000;
    --input-bg: #232323;
    --input-text: #fff;
    --table-bg: #232323;
    --table-border: #4da6ff;
    --alert-bg: #232323;
    --alert-text: #b3d9ff;
    --btn-hover: #4da6ff;
}

body, .bg-light {
    background-color: var(--secondary-color) !important;
    color: var(--primary-color);
}
.card, .card-header, .card-body, .card-footer {
    background: var(--card-bg) !important;
    color: var(--card-text) !important;
    border: 1.5px solid #0066cc33;
    transition: background 0.4s, color 0.4s, border-color 0.4s;
    box-shadow: 0 1px 5px black;
}
.dark-mode .card, .dark-mode .card-header, .dark-mode .card-body, .dark-mode .card-footer {
    background: #0066cc !important;
    color: #fff !important;
    border: 1.5px solid white !important;
    box-shadow: 0 2px 16px white;
}
.navbar, .navbar.bg-dark {
    background: var(--navbar-bg) !important;
}
footer.bg-dark {
    background: var(--footer-bg) !important;
}

.form-control, .form-select {
    background: var(--input-bg) !important;
    color: var(--input-text) !important;
}
.form-control::placeholder {
    color: #888 !important;
}

/* Accent text */
.text-gradient, .text-accent {
    color: var(--accent-color) !important;
    background: none !important;
    -webkit-background-clip: initial !important;
    background-clip: initial !important;
}

/* Accent background */
.bg-gradient, .bg-accent {
    background: var(--accent-color) !important;
    background-image: none !important;
    color: #fff !important;
}


/* Accent button */
.btn-gradient, .btn.btn-gradient {
    background: white;
    color: black!important;
    border: none;
    transition: background 0.3s, color 0.3s, box-shadow 0.3s;
}

.btn-gradient:hover, .btn.btn-gradient:hover {
    background: #000 !important;
    color: white !important;
    box-shadow: 0 5px 15px rgba(0,102,204,0.15);
}

/* Icon accent */
.icon-gradient i {
    color: var(--accent-color) !important;
    background: none !important;
    -webkit-background-clip: initial !important;
    background-clip: initial !important;
}

/* Hero section modernisée */
.hero-section {
    position: relative;
    width: 100vw;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    
    overflow: hidden;
    padding: 0;
    background: var(--accent-color) !important;
}
.hero-section .hero-bg {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    object-fit: cover;
    z-index: 1;
    opacity: 0.9;
}
.hero-section .hero-content {
    position: relative;
    z-index: 2;
    color: #fff;
    text-align: center;
    padding: 3rem 1rem;
}

/* Card hover effect */
.card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background: #0066cc;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,102,204,0.08);
}

/* Navbar styles améliorés */
.navbar {
    background: var(--navbar-bg) !important;
    box-shadow: 0 2px 16px rgba(0,102,204,0.10);
    backdrop-filter: blur(8px);
    border-bottom: 2px solid var(--accent-color);
    transition: background 0.3s, box-shadow 0.3s;
}
.navbar .nav-link {
    color: #fff !important;
    font-weight: bold;
    letter-spacing: 0.5px;
    transition: color 0.2s, border-bottom 0.2s;
    border-bottom: 2px solid transparent;
    padding-bottom: 2px;
}
.navbar .nav-link:hover, .navbar .nav-link.active {
    color: var(--accent-color) !important;
    border-bottom: 2px solid var(--accent-color);
    background: none;
}
.navbar-brand img {
    filter: drop-shadow(0 2px 8px rgba(0,102,204,0.10));
    background-color: white;
    border-radius: 10px;
}

/* Footer styles */
footer a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: #fff;
}

/* Form styles */
.form-control:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 0.25rem rgba(0,102,204,0.15);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-section {
        min-height: 40vh;
    }
    .hero-section .hero-content {
        padding: 2rem 0.5rem;
    }
}

.table {
    background: var(--table-bg) !important;
    color: var(--card-text) !important;
    border-color: var(--table-border) !important;
    transition: background 0.4s, color 0.4s;
}
.table th, .table td {
    border-color: var(--accent-color) !important;
}
.alert {
    background: var(--alert-bg) !important;
    color: var(--alert-text) !important;
    border: none;
    transition: background 0.4s, color 0.4s;
}

.text-muted, .card-text.text-muted, .fs-5, .section-subtitle {
    color: var(--card-text) !important;
    opacity: 0.85;
}

hr, .section-divider {
    border: none;
    border-top: 2px solid var(--accent-color);
    margin: 2.5rem 0;
    transition: border-color 0.3s;
}
.light-mode hr, .light-mode .section-divider {
    border-color: var(--accent-color);
}
.dark-mode hr, .dark-mode .section-divider {
    border-color: #fff;
}

.mouse-glow-particle {
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    width: var(--glow-size, 18px);
    height: var(--glow-size, 18px);
    border-radius: 50%;
    filter: blur(2.5px) brightness(1.5);
    opacity: 0.85;
    transition: opacity 0.7s cubic-bezier(.4,0,.2,1);
    will-change: opacity, transform;
    mix-blend-mode: lighten;
    box-shadow: 0 0 16px 2px currentColor;
}

.welcome-section {
    background: var(--card-bg);
    color: var(--card-text);
    border-radius: 1.5rem;
    box-shadow: 0 4px 32px rgba(0,102,204,0.07), 0 1.5px 8px rgba(0,0,0,0.06);
    border: 1.5px solid rgba(0,102,204,0.10);
    padding: 2.5rem 2rem 2rem 2rem;
    margin-top: -2.5rem;
    margin-bottom: 2.5rem;
    position: relative;
    z-index: 2;
    transition: background 0.4s, color 0.4s, box-shadow 0.4s;
}
.welcome-section .btn {
    font-weight: 500;
    letter-spacing: 0.5px;
}

.bg-light {
    background: #f3f3f3 !important;
}

.dark-mode .bg-light {
    background: #232323 !important;
}