body {
    font-family: 'Open Sans', sans-serif;
    background: linear-gradient(135deg, #f0f7ff, #e0f2f7);
    color: #333;
    margin: 0;
    padding: 0;
}

.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 0.5rem 1rem;
}

.navbar-brand h1 {
    font-family: 'Jost', sans-serif;
    font-weight: 700;
    color: #1e3a8a;
    transition: color 0.3s ease;
}

    .navbar-brand h1:hover {
        color: #3b82f6;
    }

.nav-link {
    font-weight: 600;
    color: #1e40af;
    transition: color 0.3s ease, transform 0.3s ease;
}

    .nav-link:hover, .nav-link.active {
        color: #3b82f6 !important;
        transform: translateY(-2px);
    }

.btn-primary {
    background: linear-gradient(45deg, #3b82f6, #60a5fa);
    border: none;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    transition: all 0.3s ease;
}

    .btn-primary:hover {
        background: linear-gradient(45deg, #1e40af, #3b82f6);
        transform: translateY(-2px);
        box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    }

.footer {
    background: #1e293b;
    color: #94a3b8;
    padding: 3rem 0;
}

    .footer h3 {
        color: #ffffff;
        font-family: 'Jost', sans-serif;
        font-weight: 600;
    }

    .footer a {
        color: #94a3b8;
        transition: color 0.3s ease;
    }

        .footer a:hover {
            color: #60a5fa;
            text-decoration: none;
        }


/* Style cho avatar và dropdown */
.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    cursor: pointer;
    transition: transform 0.3s ease;
}

    .user-avatar:hover {
        transform: scale(1.1);
    }

.dropdown-menu {
    min-width: 200px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    display: none;
}

.dropdown-item {
    font-weight: 600;
    color: #1e40af;
    transition: color 0.3s ease, background-color 0.3s ease;
}

    .dropdown-item:hover {
        color: #3b82f6;
        background-color: #f0f7ff;
    }

/* === ĐẢM BẢO TÊN NGƯỜI DÙNG LUÔN IN ĐẬM & ĐẸP TRÊN MỌI TRANG === */
.navbar .user-name,
.navbar .fw-bold,
.navbar b,
.navbar strong {
    font-family: 'Jost', sans-serif !important;
    font-weight: 700 !important;
    color: #1e3a8a !important;
    font-size: 1rem;
    transition: color 0.3s ease;
}

    .navbar .user-name:hover,
    .navbar .fw-bold:hover {
        color: #3b82f6 !important;
    }